move Settings, SettingsBuilder, SettingsLoader to API package, make SettingsBuilder to be loadable by ServiceLoader

content-api/build.gradle

@@ -0,0 +1,3 @@
+dependencies {
+    api "org.xbib:datastructures-api:${project.property('xbib-datastructures.version')}"
+}

content-api/src/main/java/module-info.java

@@ -1,3 +1,8 @@
-module org.xbib.content {
+import org.xbib.content.SettingsBuilder;
+
+module org.xbib.content.api {
     exports org.xbib.content;
-}
+    requires transitive org.xbib.datastructures.api;
+    requires java.sql;
+    uses SettingsBuilder;
+}

content-api/src/main/java/org/xbib/content/PlaceholderResolver.java

@@ -1,4 +1,4 @@
-package org.xbib.content.settings;
+package org.xbib.content;
 
 /**
  * Strategy interface used to resolve replacement values for placeholders contained in Strings.

content-api/src/main/java/org/xbib/content/PropertyPlaceholder.java

@@ -1,4 +1,4 @@
-package org.xbib.content.settings.datastructures;
+package org.xbib.content;
 
 import java.util.HashSet;
 import java.util.Set;

content-api/src/main/java/org/xbib/content/Settings.java

@@ -0,0 +1,65 @@
+package org.xbib.content;
+
+import org.xbib.datastructures.api.ByteSizeValue;
+import org.xbib.datastructures.api.TimeValue;
+import java.util.Map;
+import java.util.Optional;
+import java.util.ServiceLoader;
+
+public interface Settings extends AutoCloseable {
+
+    class Holder {
+
+        private static SettingsBuilder createBuilder() {
+            ServiceLoader<SettingsBuilder> serviceLoader = ServiceLoader.load(SettingsBuilder.class);
+            Optional<SettingsBuilder> optionalConfigLogger = serviceLoader.findFirst();
+            return optionalConfigLogger.orElse(null);
+        }
+
+        private static final Settings emptySettings = createBuilder().build();
+    }
+
+    static SettingsBuilder settingsBuilder() {
+        return Holder.createBuilder();
+    }
+
+    static Settings emptySettings() {
+        return Holder.emptySettings;
+    }
+
+    boolean isEmpty();
+
+    String get(String setting);
+
+    String get(String setting, String defaultValue);
+
+    Float getAsFloat(String setting, Float defaultValue);
+
+    Double getAsDouble(String setting, Double defaultValue);
+
+    Integer getAsInt(String setting, Integer defaultValue);
+
+    Long getAsLong(String setting, Long defaultValue);
+
+    Boolean getAsBoolean(String setting, Boolean defaultValue);
+
+    TimeValue getAsTime(String setting, TimeValue defaultValue);
+
+    ByteSizeValue getAsBytesSize(String setting, ByteSizeValue defaultValue);
+
+    String[] getAsArray(String settingPrefix);
+
+    String[] getAsArray(String settingPrefix, String[] defaultArray);
+
+    Map<String, String> getAsMap();
+
+    Map<String, Object> getAsStructuredMap();
+
+    Map<String, Settings> getGroups(String prefix);
+
+    Settings getAsSettings(String setting);
+
+    Settings getByPrefix(String prefix);
+
+    boolean containsSetting(String setting);
+}

content-api/src/main/java/org/xbib/content/SettingsBuilder.java

@@ -0,0 +1,73 @@
+package org.xbib.content;
+
+import java.io.InputStream;
+import java.nio.file.Path;
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.TimeUnit;
+
+public interface SettingsBuilder {
+
+    SettingsBuilder put(String setting, String value);
+
+    SettingsBuilder put(String setting, Class<?> clazz);
+
+    SettingsBuilder put(String setting, boolean value);
+
+    SettingsBuilder put(String setting, int value);
+
+    SettingsBuilder put(String setting, long value);
+
+    SettingsBuilder put(String setting, float value);
+
+    SettingsBuilder put(String setting, double value);
+
+    SettingsBuilder putArray(String setting, String... values);
+
+    SettingsBuilder putArray(String setting, List<String> values);
+
+    SettingsBuilder put(String settingPrefix, String groupName, String[] settings, String[] values)
+            throws SettingsException;
+
+    SettingsBuilder put(Settings settings);
+
+    SettingsBuilder put(Map<String, String> settings);
+
+    SettingsBuilder loadFromString(String source);
+
+    SettingsBuilder loadFromResource(String resourceName, InputStream inputStream) throws SettingsException;
+
+    default SettingsBuilder fromJdbcConfTable(Connection connection, String id, String type) throws SQLException {
+        try (PreparedStatement statement = connection.prepareStatement("select key, value from conf where id = ? and type = ?",
+                new String[]{id, type}); ResultSet resultSet = statement.executeQuery()) {
+            while (resultSet.next()) {
+                String key = resultSet.getString("key");
+                String value = resultSet.getString("value");
+                put(key, value);
+            }
+        }
+        return this;
+    }
+
+    SettingsBuilder loadFromSystemProperties();
+
+    SettingsBuilder loadFromSystemEnvironment();
+
+    SettingsBuilder replacePropertyPlaceholders(PropertyPlaceholder propertyPlaceholder,
+                                                PlaceholderResolver placeholderResolver);
+
+    SettingsBuilder replacePropertyPlaceholders();
+
+    SettingsBuilder setRefresh(Path path, long initialDelay, long period, TimeUnit timeUnit);
+
+    Settings build();
+
+    boolean isEmpty();
+
+    Map<String, String> map();
+
+}

content-api/src/main/java/org/xbib/content/SettingsException.java

@@ -1,4 +1,4 @@
-package org.xbib.content.settings.datastructures;
+package org.xbib.content;
 
 /**
  * A generic failure to handle settings.

content-api/src/main/java/org/xbib/content/SettingsLoaderService.java

@@ -1,9 +1,7 @@
 package org.xbib.content.settings.datastructures;
 
-import java.sql.Connection;
+import org.xbib.content.SettingsLoader;
-import java.sql.PreparedStatement;
+
-import java.sql.ResultSet;
-import java.sql.SQLException;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Map;
@@ -69,17 +67,4 @@ public final class SettingsLoaderService {
         }
         return suffixes;
     }
-
-    public static Settings fromJdbcConfTable(Connection connection, String id, String type) throws SQLException {
-        Settings.Builder settingsBuilder = Settings.settingsBuilder();
-        try (PreparedStatement statement = connection.prepareStatement("select key, value from conf where id = ? and type = ?",
-               new String[]{id, type}); ResultSet resultSet = statement.executeQuery()) {
-            while (resultSet.next()) {
-                String key = resultSet.getString("key");
-                String value = resultSet.getString("value");
-                settingsBuilder.put(key, value);
-            }
-        }
-        return settingsBuilder.build();
-    }
 }

content-api/src/main/java/org/xbib/content/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * Content API.
+ */
+package org.xbib.content;

content-config/src/main/java/module-info.java

@@ -1,10 +1,11 @@
 import org.xbib.content.config.ConfigLogger;
-import org.xbib.content.settings.datastructures.SettingsLoader;
+import org.xbib.content.SettingsLoader;
 
 module org.xbib.content.config {
     exports org.xbib.content.config;
     uses ConfigLogger;
     uses SettingsLoader;
     provides ConfigLogger with org.xbib.content.config.SystemConfigLogger;
+    requires org.xbib.content.api;
     requires transitive org.xbib.content.settings.datastructures;
 }

content-config/src/main/java/org/xbib/content/config/ConfigFinder.java

@@ -161,7 +161,8 @@ public class ConfigFinder {
             return Files.getLastModifiedTime(p);
         } catch (IOException e) {
             return null;
-        }});
+        }
+   });
 
     private static final Comparator<Path> PATH_NAME_COMPARATOR = Comparator.comparing(Path::toString);
 }

content-config/src/main/java/org/xbib/content/config/ConfigLoader.java

@@ -1,9 +1,9 @@
 package org.xbib.content.config;
 
-import org.xbib.content.settings.datastructures.SettingsLoader;
+import org.xbib.content.Settings;
-import org.xbib.content.settings.datastructures.Settings;
+import org.xbib.content.SettingsBuilder;
+import org.xbib.content.SettingsLoader;
 import org.xbib.content.settings.datastructures.SettingsLoaderService;
-
 import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.InputStream;
@@ -42,11 +42,12 @@ public class ConfigLoader {
             Optional<ConfigLogger> optionalConfigLogger = serviceLoader.findFirst();
             return optionalConfigLogger.orElse(new SystemConfigLogger());
         }
-        static ConfigLoader LOADER = new ConfigLoader().withLogger(createConfigLogger());
+
+        private static final ConfigLoader configLoader = new ConfigLoader().withLogger(createConfigLogger());
     }
 
     public static ConfigLoader getInstance() {
-        return Holder.LOADER;
+        return Holder.configLoader;
     }
 
     public ConfigLoader withLogger(ConfigLogger logger) {
@@ -59,8 +60,8 @@ public class ConfigLoader {
         return map.get(configParams);
     }
 
-    private Settings.Builder internalLoad(ConfigParams params) throws ConfigException {
+    private SettingsBuilder internalLoad(ConfigParams params) throws ConfigException {
-        Settings.Builder settings = Settings.settingsBuilder();
+        SettingsBuilder settings = Settings.settingsBuilder();
         if (params.withSystemEnvironment) {
             settings.loadFromSystemEnvironment();
         }
@@ -74,7 +75,7 @@ public class ConfigLoader {
         }
         if (!params.reader.isEmpty()) {
             for (ConfigParams.SuffixedReader reader : params.reader) {
-                Settings.Builder readerSettings = createSettingsFromReader(reader.reader, reader.suffix);
+                SettingsBuilder readerSettings = createSettingsFromReader(reader.reader, reader.suffix);
                 if (readerSettings != null) {
                     settings.put(readerSettings.build());
                     if (!params.includeAll) {
@@ -84,7 +85,7 @@ public class ConfigLoader {
             }
         }
         if (params.args != null) {
-            Settings.Builder argsSettings = createSettingsFromArgs(params);
+            SettingsBuilder argsSettings = createSettingsFromArgs(params);
             if (argsSettings != null) {
                 settings.put(argsSettings.build());
                 if (!params.includeAll) {
@@ -93,7 +94,7 @@ public class ConfigLoader {
             }
         }
         if (params.withStdin) {
-            Settings.Builder stdinSettings = createSettingsFromStdin();
+            SettingsBuilder stdinSettings = createSettingsFromStdin();
             if (stdinSettings != null) {
                 settings.put(stdinSettings.build());
                 if (!params.includeAll) {
@@ -102,7 +103,7 @@ public class ConfigLoader {
             }
         }
         if (!params.fileLocations.isEmpty()) {
-            Settings.Builder fileSettings = createSettingsFromFile(params.fileLocations);
+            SettingsBuilder fileSettings = createSettingsFromFile(params.fileLocations);
             if (fileSettings != null) {
                 settings.put(fileSettings.build());
                 if (!params.includeAll) {
@@ -112,7 +113,7 @@ public class ConfigLoader {
         }
         if (!params.fileNamesWithoutSuffix.isEmpty()) {
             for (String fileNameWithoutSuffix : params.fileNamesWithoutSuffix) {
-                Settings.Builder fileSettings = createSettingsFromFile(createListOfLocations(params, fileNameWithoutSuffix));
+                SettingsBuilder fileSettings = createSettingsFromFile(createListOfLocations(params, fileNameWithoutSuffix));
                 if (fileSettings != null) {
                     settings.put(fileSettings.build());
                     if (!params.includeAll) {
@@ -124,7 +125,7 @@ public class ConfigLoader {
                 if (params.classLoaders != null) {
                     for (ClassLoader cl : params.classLoaders) {
                         if (cl != null) {
-                            Settings.Builder classpathSettings = createClasspathSettings(params, cl, fileNameWithoutSuffix);
+                            SettingsBuilder classpathSettings = createClasspathSettings(params, cl, fileNameWithoutSuffix);
                             if (classpathSettings != null) {
                                 settings.put(classpathSettings.build());
                                 if (!params.includeAll) {
@@ -142,14 +143,15 @@ public class ConfigLoader {
         throw new ConfigException("no config found");
     }
 
-    private Settings.Builder createSettingsFromArgs(ConfigParams params) throws ConfigException {
+    private SettingsBuilder createSettingsFromArgs(ConfigParams params) throws ConfigException {
         if (!params.fileNamesWithoutSuffix.isEmpty() && params.args != null) {
             for (String fileNameWithoutSuffix : params.fileNamesWithoutSuffix) {
                 for (String suffix : SettingsLoaderService.getInstance().getSuffixes()) {
                     for (int i = 0; i < params.args.size() - 1; i++) {
                         String arg = params.args.get(i);
                         String s = params.directoryName != null ?
-                          "--" + params.directoryName + "-" + fileNameWithoutSuffix + suffix : "--" + fileNameWithoutSuffix + suffix;
+                                "--" + params.directoryName + "-" + fileNameWithoutSuffix + suffix :
+                                "--" + fileNameWithoutSuffix + suffix;
                         if (arg.equals(s)) {
                             return createSettingsFromReader(new StringReader(params.args.get(i + 1)), suffix);
                         }
@@ -160,7 +162,7 @@ public class ConfigLoader {
         return null;
     }
 
-    private Settings.Builder createSettingsFromStdin() throws ConfigException {
+    private SettingsBuilder createSettingsFromStdin() throws ConfigException {
         if (System.in != null) {
             try {
                 int numBytesWaiting = System.in.available();
@@ -175,8 +177,8 @@ public class ConfigLoader {
         return null;
     }
 
-    private Settings.Builder createSettingsFromFile(List<String> settingsFileNames) throws ConfigException {
+    private SettingsBuilder createSettingsFromFile(List<String> settingsFileNames) throws ConfigException {
-        Settings.Builder settings = Settings.settingsBuilder();
+        SettingsBuilder settings = Settings.settingsBuilder();
         for (String settingsFileName: settingsFileNames) {
             int pos = settingsFileName.lastIndexOf('.');
             String suffix = (pos > 0 ? settingsFileName.substring(pos + 1) : "").toLowerCase(Locale.ROOT);
@@ -191,7 +193,7 @@ public class ConfigLoader {
                 System.setProperty("config.path", path.getParent().toString());
                 try {
                     InputStream inputStream = Files.newInputStream(path);
-                    Settings.Builder fileSettings = createSettingsFromStream(inputStream, suffix);
+                    SettingsBuilder fileSettings = createSettingsFromStream(inputStream, suffix);
                     if (fileSettings != null) {
                         settings.put(fileSettings.build());
                     }
@@ -203,10 +205,10 @@ public class ConfigLoader {
         return settings.isEmpty() ? null : settings;
     }
 
-    private Settings.Builder createClasspathSettings(ConfigParams params,
+    private SettingsBuilder createClasspathSettings(ConfigParams params,
-                                                     ClassLoader classLoader,
+                                                    ClassLoader classLoader,
-                                                     String fileNameWithoutSuffix) throws ConfigException {
+                                                    String fileNameWithoutSuffix) throws ConfigException {
-        Settings.Builder settings = Settings.settingsBuilder();
+        SettingsBuilder settings = Settings.settingsBuilder();
         for (String suffix : SettingsLoaderService.getInstance().getSuffixes()) {
             String path = params.directoryName != null ?
                     params.directoryName + '-' + fileNameWithoutSuffix + suffix :  fileNameWithoutSuffix + suffix;
@@ -215,7 +217,7 @@ public class ConfigLoader {
                 if (logger != null) {
                     logger.info("found resource: " + path);
                 }
-                Settings.Builder streamSettings = createSettingsFromStream(inputStream, suffix);
+                SettingsBuilder streamSettings = createSettingsFromStream(inputStream, suffix);
                 if (streamSettings != null) {
                     settings.put(streamSettings.build());
                 }
@@ -224,8 +226,8 @@ public class ConfigLoader {
         return settings.isEmpty() ? null : settings;
     }
 
-    private Settings.Builder createSettingsFromStream(InputStream inputStream,
+    private SettingsBuilder createSettingsFromStream(InputStream inputStream,
-                                                      String suffix) throws ConfigException {
+                                                     String suffix) throws ConfigException {
         if (inputStream == null) {
             if (logger != null) {
                 logger.error("unable to open input stream");
@@ -235,8 +237,8 @@ public class ConfigLoader {
         return createSettingsFromReader(new InputStreamReader(inputStream, StandardCharsets.UTF_8), suffix);
     }
 
-    private Settings.Builder createSettingsFromReader(Reader reader,
+    private SettingsBuilder createSettingsFromReader(Reader reader,
-                                                      String suffix) throws ConfigException {
+                                                     String suffix) throws ConfigException {
         if (reader == null) {
             if (logger != null) {
                 logger.error("unable to open reader");
@@ -245,7 +247,7 @@ public class ConfigLoader {
         }
         SettingsLoader settingsLoader = SettingsLoaderService.getInstance().loaderFromResource(suffix);
         if (settingsLoader != null) {
-            Settings.Builder settings;
+            SettingsBuilder settings;
             try (BufferedReader bufferedReader = new BufferedReader(reader)) {
                 String content = bufferedReader.lines().collect(Collectors.joining("\n"));
                 settings = Settings.settingsBuilder().put(settingsLoader.load(content));
@@ -261,8 +263,8 @@ public class ConfigLoader {
         return null;
     }
 
-    private Settings.Builder overrideFromProperties(ConfigParams params,
+    private SettingsBuilder overrideFromProperties(ConfigParams params,
-                                                    Settings.Builder settings) {
+                                                   SettingsBuilder settings) {
         for (String key : settings.map().keySet()) {
             String value = System.getProperty(params.directoryName != null ? params.directoryName + '.' + key : key);
             if (value != null) {
@@ -282,7 +284,7 @@ public class ConfigLoader {
             }
             if (params.directoryName != null) {
                 list.add(params.directoryName + '-' + fileNameWithoutSuffix + "." + suffix);
-                list.add(xdgConfigHome + '/' + params.directoryName + '/' + fileNameWithoutSuffix + "." +suffix);
+                list.add(xdgConfigHome + '/' + params.directoryName + '/' + fileNameWithoutSuffix + "." + suffix);
                 list.add("/etc/" + params.directoryName + '/' + fileNameWithoutSuffix + "." + suffix);
             } else {
                 list.add(fileNameWithoutSuffix + "." + suffix);

content-config/src/main/java/org/xbib/content/config/ConfigParams.java

@@ -1,7 +1,6 @@
 package org.xbib.content.config;
 
-import org.xbib.content.settings.datastructures.Settings;
+import org.xbib.content.settings.datastructures.DatastructureSettings;
-
 import java.io.IOException;
 import java.io.Reader;
 import java.util.ArrayList;
@@ -26,7 +25,7 @@ public class ConfigParams implements Comparable<ConfigParams> {
 
     final List<SuffixedReader> reader = new ArrayList<>();
 
-    final List<Settings> settings = new ArrayList<>();
+    final List<DatastructureSettings> settings = new ArrayList<>();
 
     List<String> args = null;
 
@@ -77,7 +76,7 @@ public class ConfigParams implements Comparable<ConfigParams> {
         return this;
     }
 
-    public ConfigParams withSettings(Settings settings) {
+    public ConfigParams withSettings(DatastructureSettings settings) {
         this.settings.add(settings);
         return this;
     }

content-config/src/test/java/org/xbib/content/config/test/ConfigLoaderTest.java

@@ -1,17 +1,13 @@
 package org.xbib.content.config.test;
 
+import static org.junit.jupiter.api.Assertions.assertEquals;
 import org.junit.jupiter.api.Test;
+import org.xbib.content.Settings;
 import org.xbib.content.config.ConfigLoader;
 import org.xbib.content.config.ConfigParams;
-import org.xbib.content.settings.datastructures.Settings;
-
 import java.io.IOException;
 import java.io.Reader;
 import java.io.StringReader;
-import java.util.logging.Level;
-import java.util.logging.Logger;
-
-import static org.junit.jupiter.api.Assertions.assertEquals;
 
 public class ConfigLoaderTest {
 
@@ -33,13 +29,4 @@ public class ConfigLoaderTest {
         assertEquals("world2", settings.get("hello2"));
     }
 
-
-    @Test
-    public void configInterlibraryTest() {
-        Settings settings = ConfigLoader.getInstance()
-                .load(new ConfigParams()
-                        .withDirectoryName("interlibrary")
-                        .withFileNamesWithoutSuffix("test"));
-        Logger.getAnonymousLogger().log(Level.INFO, settings.getAsMap().toString());
-    }
 }

content-config/src/test/java/org/xbib/content/config/test/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * Test classes for content config.
+ */
+package org.xbib.content.config.test;

content-core/src/main/java/module-info.java

@@ -1,16 +1,10 @@
 import org.xbib.content.XContent;
-import org.xbib.content.SettingsLoader;
-import org.xbib.content.properties.PropertiesSettingsLoader;
 
 module org.xbib.content.core {
     uses XContent;
-    uses SettingsLoader;
     exports org.xbib.content.io;
-    exports org.xbib.content.properties;
     exports org.xbib.content.util.geo;
-    exports org.xbib.content.util.unit;
     exports org.xbib.content.core;
-    requires transitive org.xbib.content;
+    requires transitive org.xbib.content.api;
     requires com.fasterxml.jackson.core;
-    provides SettingsLoader with PropertiesSettingsLoader;
 }

content-core/src/main/java/org/xbib/content/core/DefaultXContentBuilder.java

@@ -8,7 +8,6 @@ import org.xbib.content.XContentParser;
 import org.xbib.content.io.BytesReference;
 import org.xbib.content.io.BytesStreamOutput;
 import org.xbib.content.util.geo.GeoPoint;
-
 import java.io.IOException;
 import java.io.OutputStream;
 import java.math.BigDecimal;
@@ -136,6 +135,7 @@ public final class DefaultXContentBuilder implements XContentBuilder {
         return this;
     }
 
+    @Override
     public XContentBuilder field(String name, Integer value) throws IOException {
         field(name);
         if (value == null) {
@@ -146,6 +146,7 @@ public final class DefaultXContentBuilder implements XContentBuilder {
         return this;
     }
 
+    @Override
     public XContentBuilder field(String name, int value) throws IOException {
         field(name);
         generator.writeNumber(value);
@@ -289,6 +290,7 @@ public final class DefaultXContentBuilder implements XContentBuilder {
         return this;
     }
 
+    @Override
     public XContentBuilder field(String name, int... value) throws IOException {
         startArray(name);
         for (Object o : value) {
@@ -505,6 +507,7 @@ public final class DefaultXContentBuilder implements XContentBuilder {
         return this;
     }
 
+    @Override
     public XContentBuilder value(byte[] value) throws IOException {
         if (value == null) {
             return nullValue();

content-core/src/main/java/org/xbib/content/core/XContentHelper.java

@@ -5,7 +5,6 @@ import org.xbib.content.XContentBuilder;
 import org.xbib.content.XContentGenerator;
 import org.xbib.content.XContentParser;
 import org.xbib.content.io.BytesReference;
-
 import java.io.IOException;
 import java.io.Reader;
 import java.util.Map;

content-core/src/main/java/org/xbib/content/core/XContentService.java

@@ -3,7 +3,6 @@ package org.xbib.content.core;
 import org.xbib.content.XContent;
 import org.xbib.content.XContentBuilder;
 import org.xbib.content.io.BytesArray;
-
 import java.io.IOException;
 import java.nio.charset.StandardCharsets;
 import java.util.HashMap;

content-core/src/main/java/org/xbib/content/properties/package-info.java

@@ -1,4 +0,0 @@
-/**
- *  Classes for properties-based content.
- */
-package org.xbib.content.properties;

content-core/src/main/java/org/xbib/content/util/unit/ByteSizeUnit.java

@@ -1,233 +0,0 @@
-package org.xbib.content.util.unit;
-
-/**
- * A {@code SizeUnit} represents size at a given unit of
- * granularity and provides utility methods to convert across units.
- * A {@code SizeUnit} does not maintain size information, but only
- * helps organize and use size representations that may be maintained
- * separately across various contexts.
- */
-public enum ByteSizeUnit {
-    BYTES {
-        @Override
-        public long toBytes(long size) {
-            return size;
-        }
-
-        @Override
-        public long toKB(long size) {
-            return size / (C1 / C0);
-        }
-
-        @Override
-        public long toMB(long size) {
-            return size / (C2 / C0);
-        }
-
-        @Override
-        public long toGB(long size) {
-            return size / (C3 / C0);
-        }
-
-        @Override
-        public long toTB(long size) {
-            return size / (C4 / C0);
-        }
-
-        @Override
-        public long toPB(long size) {
-            return size / (C5 / C0);
-        }
-    },
-    KB {
-        @Override
-        public long toBytes(long size) {
-            return x(size, C1 / C0, MAX / (C1 / C0));
-        }
-
-        @Override
-        public long toKB(long size) {
-            return size;
-        }
-
-        @Override
-        public long toMB(long size) {
-            return size / (C2 / C1);
-        }
-
-        @Override
-        public long toGB(long size) {
-            return size / (C3 / C1);
-        }
-
-        @Override
-        public long toTB(long size) {
-            return size / (C4 / C1);
-        }
-
-        @Override
-        public long toPB(long size) {
-            return size / (C5 / C1);
-        }
-    },
-    MB {
-        @Override
-        public long toBytes(long size) {
-            return x(size, C2 / C0, MAX / (C2 / C0));
-        }
-
-        @Override
-        public long toKB(long size) {
-            return x(size, C2 / C1, MAX / (C2 / C1));
-        }
-
-        @Override
-        public long toMB(long size) {
-            return size;
-        }
-
-        @Override
-        public long toGB(long size) {
-            return size / (C3 / C2);
-        }
-
-        @Override
-        public long toTB(long size) {
-            return size / (C4 / C2);
-        }
-
-        @Override
-        public long toPB(long size) {
-            return size / (C5 / C2);
-        }
-    },
-    GB {
-        @Override
-        public long toBytes(long size) {
-            return x(size, C3 / C0, MAX / (C3 / C0));
-        }
-
-        @Override
-        public long toKB(long size) {
-            return x(size, C3 / C1, MAX / (C3 / C1));
-        }
-
-        @Override
-        public long toMB(long size) {
-            return x(size, C3 / C2, MAX / (C3 / C2));
-        }
-
-        @Override
-        public long toGB(long size) {
-            return size;
-        }
-
-        @Override
-        public long toTB(long size) {
-            return size / (C4 / C3);
-        }
-
-        @Override
-        public long toPB(long size) {
-            return size / (C5 / C3);
-        }
-    },
-    TB {
-        @Override
-        public long toBytes(long size) {
-            return x(size, C4 / C0, MAX / (C4 / C0));
-        }
-
-        @Override
-        public long toKB(long size) {
-            return x(size, C4 / C1, MAX / (C4 / C1));
-        }
-
-        @Override
-        public long toMB(long size) {
-            return x(size, C4 / C2, MAX / (C4 / C2));
-        }
-
-        @Override
-        public long toGB(long size) {
-            return x(size, C4 / C3, MAX / (C4 / C3));
-        }
-
-        @Override
-        public long toTB(long size) {
-            return size;
-        }
-
-        @Override
-        public long toPB(long size) {
-            return size / (C5 / C4);
-        }
-    },
-    PB {
-        @Override
-        public long toBytes(long size) {
-            return x(size, C5 / C0, MAX / (C5 / C0));
-        }
-
-        @Override
-        public long toKB(long size) {
-            return x(size, C5 / C1, MAX / (C5 / C1));
-        }
-
-        @Override
-        public long toMB(long size) {
-            return x(size, C5 / C2, MAX / (C5 / C2));
-        }
-
-        @Override
-        public long toGB(long size) {
-            return x(size, C5 / C3, MAX / (C5 / C3));
-        }
-
-        @Override
-        public long toTB(long size) {
-            return x(size, C5 / C4, MAX / (C5 / C4));
-        }
-
-        @Override
-        public long toPB(long size) {
-            return size;
-        }
-    };
-
-    static final long C0 = 1L;
-    static final long C1 = C0 * 1024L;
-    static final long C2 = C1 * 1024L;
-    static final long C3 = C2 * 1024L;
-    static final long C4 = C3 * 1024L;
-    static final long C5 = C4 * 1024L;
-
-    static final long MAX = Long.MAX_VALUE;
-
-    /**
-     * Scale d by m, checking for overflow.
-     * This has a short name to make above code more readable.
-     */
-    static long x(long d, long m, long over) {
-        if (d > over) {
-            return Long.MAX_VALUE;
-        }
-        if (d < -over) {
-            return Long.MIN_VALUE;
-        }
-        return d * m;
-    }
-
-
-    public abstract long toBytes(long size);
-
-    public abstract long toKB(long size);
-
-    public abstract long toMB(long size);
-
-    public abstract long toGB(long size);
-
-    public abstract long toTB(long size);
-
-    public abstract long toPB(long size);
-}

content-core/src/main/java/org/xbib/content/util/unit/ByteSizeValue.java

@@ -1,228 +0,0 @@
-package org.xbib.content.util.unit;
-
-import java.util.Locale;
-
-/**
- *
- */
-public class ByteSizeValue {
-
-    private long size;
-
-    private ByteSizeUnit sizeUnit;
-
-    private ByteSizeValue() {
-    }
-
-    public ByteSizeValue(long size, ByteSizeUnit sizeUnit) {
-        this.size = size;
-        this.sizeUnit = sizeUnit;
-    }
-
-    /**
-     * Format the double value with a single decimal points, trimming trailing '.0'.
-     * @param value value
-     * @param suffix suffix
-     * @return formatted decimal
-     */
-    public static String format1Decimals(double value, String suffix) {
-        String p = String.valueOf(value);
-        int ix = p.indexOf('.') + 1;
-        int ex = p.indexOf('E');
-        char fraction = p.charAt(ix);
-        if (fraction == '0') {
-            if (ex != -1) {
-                return p.substring(0, ix - 1) + p.substring(ex) + suffix;
-            } else {
-                return p.substring(0, ix - 1) + suffix;
-            }
-        } else {
-            if (ex != -1) {
-                return p.substring(0, ix) + fraction + p.substring(ex) + suffix;
-            } else {
-                return p.substring(0, ix) + fraction + suffix;
-            }
-        }
-    }
-
-    public static ByteSizeValue parseBytesSizeValue(String sValue) {
-        return parseBytesSizeValue(sValue, null);
-    }
-
-    public static ByteSizeValue parseBytesSizeValue(String sValue, ByteSizeValue defaultValue) {
-        if (sValue == null) {
-            return defaultValue;
-        }
-        long bytes;
-        try {
-            String lastTwoChars = sValue.substring(sValue.length() - Math.min(2, sValue.length())).toLowerCase(Locale.ROOT);
-            if (lastTwoChars.endsWith("k")) {
-                bytes = (long) (Double.parseDouble(sValue.substring(0, sValue.length() - 1)) * ByteSizeUnit.C1);
-            } else if (lastTwoChars.endsWith("kb")) {
-                bytes = (long) (Double.parseDouble(sValue.substring(0, sValue.length() - 2)) * ByteSizeUnit.C1);
-            } else if (lastTwoChars.endsWith("m")) {
-                bytes = (long) (Double.parseDouble(sValue.substring(0, sValue.length() - 1)) * ByteSizeUnit.C2);
-            } else if (lastTwoChars.endsWith("mb")) {
-                bytes = (long) (Double.parseDouble(sValue.substring(0, sValue.length() - 2)) * ByteSizeUnit.C2);
-            } else if (lastTwoChars.endsWith("g")) {
-                bytes = (long) (Double.parseDouble(sValue.substring(0, sValue.length() - 1)) * ByteSizeUnit.C3);
-            } else if (lastTwoChars.endsWith("gb")) {
-                bytes = (long) (Double.parseDouble(sValue.substring(0, sValue.length() - 2)) * ByteSizeUnit.C3);
-            } else if (lastTwoChars.endsWith("t")) {
-                bytes = (long) (Double.parseDouble(sValue.substring(0, sValue.length() - 1)) * ByteSizeUnit.C4);
-            } else if (lastTwoChars.endsWith("tb")) {
-                bytes = (long) (Double.parseDouble(sValue.substring(0, sValue.length() - 2)) * ByteSizeUnit.C4);
-            } else if (lastTwoChars.endsWith("p")) {
-                bytes = (long) (Double.parseDouble(sValue.substring(0, sValue.length() - 1)) * ByteSizeUnit.C5);
-            } else if (lastTwoChars.endsWith("pb")) {
-                bytes = (long) (Double.parseDouble(sValue.substring(0, sValue.length() - 2)) * ByteSizeUnit.C5);
-            } else if (lastTwoChars.endsWith("b")) {
-                bytes = Long.parseLong(sValue.substring(0, sValue.length() - 1));
-            } else {
-                bytes = Long.parseLong(sValue);
-            }
-        } catch (NumberFormatException e) {
-            return defaultValue;
-        }
-        return new ByteSizeValue(bytes, ByteSizeUnit.BYTES);
-    }
-
-    public int bytesAsInt() throws IllegalArgumentException {
-        long bytes = bytes();
-        if (bytes > Integer.MAX_VALUE) {
-            throw new IllegalArgumentException("size [" + toString() + "] is bigger than max int");
-        }
-        return (int) bytes;
-    }
-
-    public long bytes() {
-        return sizeUnit.toBytes(size);
-    }
-
-    public long getBytes() {
-        return bytes();
-    }
-
-    public long kb() {
-        return sizeUnit.toKB(size);
-    }
-
-    public long getKb() {
-        return kb();
-    }
-
-    public long mb() {
-        return sizeUnit.toMB(size);
-    }
-
-    public long getMb() {
-        return mb();
-    }
-
-    public long gb() {
-        return sizeUnit.toGB(size);
-    }
-
-    public long getGb() {
-        return gb();
-    }
-
-    public long tb() {
-        return sizeUnit.toTB(size);
-    }
-
-    public long getTb() {
-        return tb();
-    }
-
-    public long pb() {
-        return sizeUnit.toPB(size);
-    }
-
-    public long getPb() {
-        return pb();
-    }
-
-    public double kbFrac() {
-        return ((double) bytes()) / ByteSizeUnit.C1;
-    }
-
-    public double getKbFrac() {
-        return kbFrac();
-    }
-
-    public double mbFrac() {
-        return ((double) bytes()) / ByteSizeUnit.C2;
-    }
-
-    public double getMbFrac() {
-        return mbFrac();
-    }
-
-    public double gbFrac() {
-        return ((double) bytes()) / ByteSizeUnit.C3;
-    }
-
-    public double getGbFrac() {
-        return gbFrac();
-    }
-
-    public double tbFrac() {
-        return ((double) bytes()) / ByteSizeUnit.C4;
-    }
-
-    public double getTbFrac() {
-        return tbFrac();
-    }
-
-    public double pbFrac() {
-        return ((double) bytes()) / ByteSizeUnit.C5;
-    }
-
-    public double getPbFrac() {
-        return pbFrac();
-    }
-
-    @Override
-    public String toString() {
-        long bytes = bytes();
-        double value = bytes;
-        String suffix = "b";
-        if (bytes >= ByteSizeUnit.C5) {
-            value = pbFrac();
-            suffix = "pb";
-        } else if (bytes >= ByteSizeUnit.C4) {
-            value = tbFrac();
-            suffix = "tb";
-        } else if (bytes >= ByteSizeUnit.C3) {
-            value = gbFrac();
-            suffix = "gb";
-        } else if (bytes >= ByteSizeUnit.C2) {
-            value = mbFrac();
-            suffix = "mb";
-        } else if (bytes >= ByteSizeUnit.C1) {
-            value = kbFrac();
-            suffix = "kb";
-        }
-        return format1Decimals(value, suffix);
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) {
-            return true;
-        }
-        if (o == null || getClass() != o.getClass()) {
-            return false;
-        }
-        ByteSizeValue sizeValue = (ByteSizeValue) o;
-        return size == sizeValue.size && sizeUnit == sizeValue.sizeUnit;
-    }
-
-    @Override
-    public int hashCode() {
-        int result = (int) (size ^ (size >>> 32));
-        result = 31 * result + (sizeUnit != null ? sizeUnit.hashCode() : 0);
-        return result;
-    }
-}

content-core/src/main/java/org/xbib/content/util/unit/SizeUnit.java

@@ -1,229 +0,0 @@
-package org.xbib.content.util.unit;
-
-/**
- *
- */
-public enum SizeUnit {
-    SCALAR {
-        @Override
-        public long toScalar(long size) {
-            return size;
-        }
-
-        @Override
-        public long toKilo(long size) {
-            return size / (C1 / C0);
-        }
-
-        @Override
-        public long toMega(long size) {
-            return size / (C2 / C0);
-        }
-
-        @Override
-        public long toGiga(long size) {
-            return size / (C3 / C0);
-        }
-
-        @Override
-        public long toTera(long size) {
-            return size / (C4 / C0);
-        }
-
-        @Override
-        public long toPeta(long size) {
-            return size / (C5 / C0);
-        }
-    },
-    KILO {
-        @Override
-        public long toScalar(long size) {
-            return x(size, C1 / C0, MAX / (C1 / C0));
-        }
-
-        @Override
-        public long toKilo(long size) {
-            return size;
-        }
-
-        @Override
-        public long toMega(long size) {
-            return size / (C2 / C1);
-        }
-
-        @Override
-        public long toGiga(long size) {
-            return size / (C3 / C1);
-        }
-
-        @Override
-        public long toTera(long size) {
-            return size / (C4 / C1);
-        }
-
-        @Override
-        public long toPeta(long size) {
-            return size / (C5 / C1);
-        }
-    },
-    MEGA {
-        @Override
-        public long toScalar(long size) {
-            return x(size, C2 / C0, MAX / (C2 / C0));
-        }
-
-        @Override
-        public long toKilo(long size) {
-            return x(size, C2 / C1, MAX / (C2 / C1));
-        }
-
-        @Override
-        public long toMega(long size) {
-            return size;
-        }
-
-        @Override
-        public long toGiga(long size) {
-            return size / (C3 / C2);
-        }
-
-        @Override
-        public long toTera(long size) {
-            return size / (C4 / C2);
-        }
-
-        @Override
-        public long toPeta(long size) {
-            return size / (C5 / C2);
-        }
-    },
-    GIGA {
-        @Override
-        public long toScalar(long size) {
-            return x(size, C3 / C0, MAX / (C3 / C0));
-        }
-
-        @Override
-        public long toKilo(long size) {
-            return x(size, C3 / C1, MAX / (C3 / C1));
-        }
-
-        @Override
-        public long toMega(long size) {
-            return x(size, C3 / C2, MAX / (C3 / C2));
-        }
-
-        @Override
-        public long toGiga(long size) {
-            return size;
-        }
-
-        @Override
-        public long toTera(long size) {
-            return size / (C4 / C3);
-        }
-
-        @Override
-        public long toPeta(long size) {
-            return size / (C5 / C3);
-        }
-    },
-    TERA {
-        @Override
-        public long toScalar(long size) {
-            return x(size, C4 / C0, MAX / (C4 / C0));
-        }
-
-        @Override
-        public long toKilo(long size) {
-            return x(size, C4 / C1, MAX / (C4 / C1));
-        }
-
-        @Override
-        public long toMega(long size) {
-            return x(size, C4 / C2, MAX / (C4 / C2));
-        }
-
-        @Override
-        public long toGiga(long size) {
-            return x(size, C4 / C3, MAX / (C4 / C3));
-        }
-
-        @Override
-        public long toTera(long size) {
-            return size;
-        }
-
-        @Override
-        public long toPeta(long size) {
-            return size / (C5 / C0);
-        }
-    },
-    PETA {
-        @Override
-        public long toScalar(long size) {
-            return x(size, C5 / C0, MAX / (C5 / C0));
-        }
-
-        @Override
-        public long toKilo(long size) {
-            return x(size, C5 / C1, MAX / (C5 / C1));
-        }
-
-        @Override
-        public long toMega(long size) {
-            return x(size, C5 / C2, MAX / (C5 / C2));
-        }
-
-        @Override
-        public long toGiga(long size) {
-            return x(size, C5 / C3, MAX / (C5 / C3));
-        }
-
-        @Override
-        public long toTera(long size) {
-            return x(size, C5 / C4, MAX / (C5 / C4));
-        }
-
-        @Override
-        public long toPeta(long size) {
-            return size;
-        }
-    };
-
-    static final long C0 = 1L;
-    static final long C1 = C0 * 1000L;
-    static final long C2 = C1 * 1000L;
-    static final long C3 = C2 * 1000L;
-    static final long C4 = C3 * 1000L;
-    static final long C5 = C4 * 1000L;
-
-    static final long MAX = Long.MAX_VALUE;
-
-    /**
-     * Scale d by m, checking for overflow.
-     * This has a short name to make above code more readable.
-     */
-    static long x(long d, long m, long over) {
-        if (d > over) {
-            return Long.MAX_VALUE;
-        }
-        if (d < -over) {
-            return Long.MIN_VALUE;
-        }
-        return d * m;
-    }
-
-
-    public abstract long toScalar(long size);
-
-    public abstract long toKilo(long size);
-
-    public abstract long toMega(long size);
-
-    public abstract long toGiga(long size);
-
-    public abstract long toTera(long size);
-
-    public abstract long toPeta(long size);
-}

content-core/src/main/java/org/xbib/content/util/unit/TimeValue.java

@@ -1,259 +0,0 @@
-package org.xbib.content.util.unit;
-
-import java.util.concurrent.TimeUnit;
-
-/**
- *
- */
-public class TimeValue {
-
-    private static final long C0 = 1L;
-    private static final long C1 = C0 * 1000L;
-    private static final long C2 = C1 * 1000L;
-    private static final long C3 = C2 * 1000L;
-    private static final long C4 = C3 * 60L;
-    private static final long C5 = C4 * 60L;
-    private static final long C6 = C5 * 24L;
-    private long duration;
-    private TimeUnit timeUnit;
-
-    private TimeValue() {
-    }
-
-    public TimeValue(long millis) {
-        this(millis, TimeUnit.MILLISECONDS);
-    }
-
-    public TimeValue(long duration, TimeUnit timeUnit) {
-        this.duration = duration;
-        this.timeUnit = timeUnit;
-    }
-
-    public static TimeValue timeValueNanos(long nanos) {
-        return new TimeValue(nanos, TimeUnit.NANOSECONDS);
-    }
-
-    public static TimeValue timeValueMillis(long millis) {
-        return new TimeValue(millis, TimeUnit.MILLISECONDS);
-    }
-
-    public static TimeValue timeValueSeconds(long seconds) {
-        return new TimeValue(seconds, TimeUnit.SECONDS);
-    }
-
-    public static TimeValue timeValueMinutes(long minutes) {
-        return new TimeValue(minutes, TimeUnit.MINUTES);
-    }
-
-    public static TimeValue timeValueHours(long hours) {
-        return new TimeValue(hours, TimeUnit.HOURS);
-    }
-
-    /**
-     * Format the double value with a single decimal points, trimming trailing '.0'.
-     *
-     * @param value value
-     * @param suffix suffix
-     * @return string
-     */
-    public static String format1Decimals(double value, String suffix) {
-        String p = String.valueOf(value);
-        int ix = p.indexOf('.') + 1;
-        int ex = p.indexOf('E');
-        char fraction = p.charAt(ix);
-        if (fraction == '0') {
-            if (ex != -1) {
-                return p.substring(0, ix - 1) + p.substring(ex) + suffix;
-            } else {
-                return p.substring(0, ix - 1) + suffix;
-            }
-        } else {
-            if (ex != -1) {
-                return p.substring(0, ix) + fraction + p.substring(ex) + suffix;
-            } else {
-                return p.substring(0, ix) + fraction + suffix;
-            }
-        }
-    }
-
-    public static TimeValue parseTimeValue(String sValue, TimeValue defaultValue) {
-        if (sValue == null) {
-            return defaultValue;
-        }
-        long millis;
-        if (sValue.endsWith("S")) {
-            millis = Long.parseLong(sValue.substring(0, sValue.length() - 1));
-        } else if (sValue.endsWith("ms")) {
-            millis = (long) (Double.parseDouble(sValue.substring(0, sValue.length() - 2)));
-        } else if (sValue.endsWith("s")) {
-            millis = (long) (Double.parseDouble(sValue.substring(0, sValue.length() - 1)) * 1000);
-        } else if (sValue.endsWith("m")) {
-            millis = (long) (Double.parseDouble(sValue.substring(0, sValue.length() - 1)) * 60 * 1000);
-        } else if (sValue.endsWith("H") || sValue.endsWith("h")) {
-            millis = (long) (Double.parseDouble(sValue.substring(0, sValue.length() - 1)) * 60 * 60 * 1000);
-        } else if (sValue.endsWith("d")) {
-            millis = (long) (Double.parseDouble(sValue.substring(0, sValue.length() - 1)) * 24 * 60 * 60 * 1000);
-        } else if (sValue.endsWith("w")) {
-            millis = (long) (Double.parseDouble(sValue.substring(0, sValue.length() - 1)) * 7 * 24 * 60 * 60 * 1000);
-        } else {
-            millis = Long.parseLong(sValue);
-        }
-        return new TimeValue(millis, TimeUnit.MILLISECONDS);
-    }
-
-    public long nanos() {
-        return timeUnit.toNanos(duration);
-    }
-
-    public long getNanos() {
-        return nanos();
-    }
-
-    public long micros() {
-        return timeUnit.toMicros(duration);
-    }
-
-    public long getMicros() {
-        return micros();
-    }
-
-    public long millis() {
-        return timeUnit.toMillis(duration);
-    }
-
-    public long getMillis() {
-        return millis();
-    }
-
-    public long seconds() {
-        return timeUnit.toSeconds(duration);
-    }
-
-    public long getSeconds() {
-        return seconds();
-    }
-
-    public long minutes() {
-        return timeUnit.toMinutes(duration);
-    }
-
-    public long getMinutes() {
-        return minutes();
-    }
-
-    public long hours() {
-        return timeUnit.toHours(duration);
-    }
-
-    public long getHours() {
-        return hours();
-    }
-
-    public long days() {
-        return timeUnit.toDays(duration);
-    }
-
-    public long getDays() {
-        return days();
-    }
-
-    public double microsFrac() {
-        return ((double) nanos()) / C1;
-    }
-
-    public double getMicrosFrac() {
-        return microsFrac();
-    }
-
-    public double millisFrac() {
-        return ((double) nanos()) / C2;
-    }
-
-    public double getMillisFrac() {
-        return millisFrac();
-    }
-
-    public double secondsFrac() {
-        return ((double) nanos()) / C3;
-    }
-
-    public double getSecondsFrac() {
-        return secondsFrac();
-    }
-
-    public double minutesFrac() {
-        return ((double) nanos()) / C4;
-    }
-
-    public double getMinutesFrac() {
-        return minutesFrac();
-    }
-
-    public double hoursFrac() {
-        return ((double) nanos()) / C5;
-    }
-
-    public double getHoursFrac() {
-        return hoursFrac();
-    }
-
-    public double daysFrac() {
-        return ((double) nanos()) / C6;
-    }
-
-    public double getDaysFrac() {
-        return daysFrac();
-    }
-
-    @Override
-    public String toString() {
-        if (duration < 0) {
-            return Long.toString(duration);
-        }
-        long nanos = nanos();
-        if (nanos == 0) {
-            return "0s";
-        }
-        double value = nanos;
-        String suffix = "nanos";
-        if (nanos >= C6) {
-            value = daysFrac();
-            suffix = "d";
-        } else if (nanos >= C5) {
-            value = hoursFrac();
-            suffix = "h";
-        } else if (nanos >= C4) {
-            value = minutesFrac();
-            suffix = "m";
-        } else if (nanos >= C3) {
-            value = secondsFrac();
-            suffix = "s";
-        } else if (nanos >= C2) {
-            value = millisFrac();
-            suffix = "ms";
-        } else if (nanos >= C1) {
-            value = microsFrac();
-            suffix = "micros";
-        }
-        return format1Decimals(value, suffix);
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) {
-            return true;
-        }
-        if (o == null || getClass() != o.getClass()) {
-            return false;
-        }
-        TimeValue timeValue = (TimeValue) o;
-        return duration == timeValue.duration && timeUnit == timeValue.timeUnit;
-    }
-
-    @Override
-    public int hashCode() {
-        int result = (int) (duration ^ (duration >>> 32));
-        result = 31 * result + (timeUnit != null ? timeUnit.hashCode() : 0);
-        return result;
-    }
-}

content-core/src/main/java/org/xbib/content/util/unit/package-info.java

@@ -1,4 +0,0 @@
-/**
- * Classes for units.
- */
-package org.xbib.content.util.unit;

content-core/src/main/resources/META-INF/services/org.xbib.content.SettingsLoader

@@ -1 +0,0 @@
-org.xbib.content.properties.PropertiesSettingsLoader

content-settings-datastructures-json/src/main/java/module-info.java

@@ -1,9 +1,10 @@
-import org.xbib.content.settings.datastructures.SettingsLoader;
+import org.xbib.content.SettingsLoader;
 import org.xbib.content.settings.datastructures.json.JsonSettingsLoader;
 
 module org.xbib.content.settings.datastructures.json {
     exports org.xbib.content.settings.datastructures.json;
     requires transitive org.xbib.content.settings.datastructures;
     requires org.xbib.datastructures.json.tiny;
+    uses SettingsLoader;
     provides SettingsLoader with JsonSettingsLoader;
 }

content-settings-datastructures-json/src/test/java/org/xbib/content/settings/datastructures/json/test/JsonSettingsTest.java

@@ -1,8 +1,8 @@
 package org.xbib.content.settings.datastructures.json.test;
 
 import org.junit.jupiter.api.Test;
-import org.xbib.content.settings.datastructures.Settings;
+import org.xbib.content.Settings;
-import org.xbib.content.settings.datastructures.SettingsLoader;
+import org.xbib.content.SettingsLoader;
 import org.xbib.content.settings.datastructures.json.JsonSettingsLoader;
 import java.io.IOException;
 import java.util.Arrays;

content-settings-datastructures-yaml/src/main/java/module-info.java

@@ -1,9 +1,10 @@
-import org.xbib.content.settings.datastructures.SettingsLoader;
+import org.xbib.content.SettingsLoader;
 import org.xbib.content.settings.datastructures.yaml.YamlSettingsLoader;
 
 module org.xbib.content.settings.datastructures.yaml {
     exports org.xbib.content.settings.datastructures.yaml;
     requires transitive org.xbib.content.settings.datastructures;
     requires org.xbib.datastructures.yaml.tiny;
+    uses SettingsLoader;
     provides SettingsLoader with YamlSettingsLoader;
 }

content-settings-datastructures-yaml/src/test/java/org/xbib/content/settings/datastructures/yaml/test/YamlSettingsTest.java

@@ -3,8 +3,8 @@ package org.xbib.content.settings.datastructures.yaml.test;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 
 import org.junit.jupiter.api.Test;
-import org.xbib.content.settings.datastructures.Settings;
+import org.xbib.content.Settings;
-import org.xbib.content.settings.datastructures.SettingsLoader;
+import org.xbib.content.SettingsLoader;
 import org.xbib.content.settings.datastructures.yaml.YamlSettingsLoader;
 import java.io.IOException;
 import java.util.Arrays;

content-settings-datastructures/build.gradle

@@ -1,4 +1,4 @@
 dependencies {
-    api "org.xbib:datastructures-api:${project.property('xbib-datastructures.version')}"
+    api project(':content-api')
     api "org.xbib:datastructures-tiny:${project.property('xbib-datastructures.version')}"
 }

content-settings-datastructures/src/main/java/module-info.java

@@ -1,11 +1,15 @@
+import org.xbib.content.SettingsBuilder;
+import org.xbib.content.SettingsLoader;
+import org.xbib.content.settings.datastructures.DatastructureSettingsBuilder;
 import org.xbib.content.settings.datastructures.PropertiesSettingsLoader;
-import org.xbib.content.settings.datastructures.SettingsLoader;
 
 module org.xbib.content.settings.datastructures {
     uses SettingsLoader;
     provides SettingsLoader with PropertiesSettingsLoader;
+    uses SettingsBuilder;
+    provides SettingsBuilder with DatastructureSettingsBuilder;
     exports org.xbib.content.settings.datastructures;
+    requires transitive  org.xbib.content.api;
     requires org.xbib.datastructures.tiny;
     requires transitive org.xbib.datastructures.api;
-    requires transitive java.sql;
 }

content-settings-datastructures/src/main/java/org/xbib/content/settings/datastructures/AbstractSettingsLoader.java

@@ -1,5 +1,6 @@
 package org.xbib.content.settings.datastructures;
 
+import org.xbib.content.SettingsLoader;
 import org.xbib.datastructures.api.Builder;
 import org.xbib.datastructures.api.DataStructure;
 import org.xbib.datastructures.api.ListNode;

content-settings-datastructures/src/main/java/org/xbib/content/settings/datastructures/DatastructureSettings.java

@@ -0,0 +1,357 @@
+package org.xbib.content.settings.datastructures;
+
+import org.xbib.content.Settings;
+import org.xbib.content.SettingsException;
+import org.xbib.datastructures.api.ByteSizeValue;
+import org.xbib.datastructures.api.TimeValue;
+import org.xbib.datastructures.tiny.TinyMap;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+public class DatastructureSettings implements Settings {
+
+    private static final String[] EMPTY_ARRAY = new String[0];
+
+    private final TinyMap<String, String> map;
+
+    protected DatastructureSettings(TinyMap<String, String> map) {
+        this.map = map;
+    }
+
+    public static DatastructureSettings fromMap(Map<String, Object> map) {
+        DatastructureSettingsBuilder builder = new DatastructureSettingsBuilder();
+        for (Map.Entry<String, Object> entry : map.entrySet()) {
+            builder.put(entry.getKey(), entry.getValue() != null ? entry.getValue().toString() : null);
+        }
+        return builder.build();
+    }
+
+    public static void toMap(DatastructureSettings settings, Map<String, Object> map) {
+        for (String key : settings.getAsMap().keySet()) {
+            map.put(key, settings.get(key));
+        }
+    }
+
+    public static String[] splitStringByCommaToArray(final String s) {
+        return splitStringToArray(s, ',');
+    }
+
+    public static String[] splitStringToArray(final String s, final char c) {
+        if (s.length() == 0) {
+            return EMPTY_ARRAY;
+        }
+        final char[] chars = s.toCharArray();
+        int count = 1;
+        for (final char x : chars) {
+            if (x == c) {
+                count++;
+            }
+        }
+        final String[] result = new String[count];
+        final int len = chars.length;
+        int start = 0;
+        int pos = 0;
+        int i = 0;
+        for (; pos < len; pos++) {
+            if (chars[pos] == c) {
+                int size = pos - start;
+                if (size > 0) {
+                    result[i++] = new String(chars, start, size);
+                }
+                start = pos + 1;
+            }
+        }
+        int size = pos - start;
+        if (size > 0) {
+            result[i++] = new String(chars, start, size);
+        }
+        if (i != count) {
+            String[] result1 = new String[i];
+            System.arraycopy(result, 0, result1, 0, i);
+            return result1;
+        }
+        return result;
+    }
+
+    @Override
+    public Map<String, String> getAsMap() {
+        return this.map;
+    }
+
+    @Override
+    public Map<String, Object> getAsStructuredMap() {
+        TinyMap.Builder<String, Object> stringObjectMap = TinyMap.builder();
+        for (String key : map.keySet()) {
+            String value = map.get(key);
+            processSetting(stringObjectMap, "", key, value);
+        }
+        for (String key : stringObjectMap.keySet()) {
+            Object object = stringObjectMap.get(key);
+            if (object instanceof Map) {
+                @SuppressWarnings("unchecked")
+                Map<String, Object> valMap = (Map<String, Object>) object;
+                stringObjectMap.put(key, convertMapsToArrays(valMap));
+            }
+        }
+        return stringObjectMap.build();
+    }
+
+    @Override
+    public Settings getByPrefix(String prefix) {
+        DatastructureSettingsBuilder builder = new DatastructureSettingsBuilder();
+        for (String key : map.keySet()) {
+            String value = map.get(key);
+            if (key.startsWith(prefix)) {
+                if (key.length() < prefix.length()) {
+                    continue;
+                }
+                builder.put(key.substring(prefix.length()), value);
+            }
+        }
+        return builder.build();
+    }
+
+    @Override
+    public Settings getAsSettings(String setting) {
+        return getByPrefix(setting + ".");
+    }
+
+    @Override
+    public boolean containsSetting(String setting) {
+        if (map.containsKey(setting)) {
+            return true;
+        }
+        for (String key : map.keySet()) {
+            if (key.startsWith(setting)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    @Override
+    public String get(String setting) {
+        return map.get(setting);
+    }
+
+    @Override
+    public String get(String setting, String defaultValue) {
+        String s = map.get(setting);
+        return s == null ? defaultValue : s;
+    }
+
+    @Override
+    public Float getAsFloat(String setting, Float defaultValue) {
+        String s = get(setting);
+        try {
+            return s == null ? defaultValue : Float.parseFloat(s);
+        } catch (NumberFormatException e) {
+            throw new SettingsException("Failed to parse float setting [" + setting + "] with value [" + s + "]", e);
+        }
+    }
+
+    @Override
+    public Double getAsDouble(String setting, Double defaultValue) {
+        String s = get(setting);
+        try {
+            return s == null ? defaultValue : Double.parseDouble(s);
+        } catch (NumberFormatException e) {
+            throw new SettingsException("Failed to parse double setting [" + setting + "] with value [" + s + "]", e);
+        }
+    }
+
+    @Override
+    public Integer getAsInt(String setting, Integer defaultValue) {
+        String s = get(setting);
+        try {
+            return s == null ? defaultValue : Integer.parseInt(s);
+        } catch (NumberFormatException e) {
+            throw new SettingsException("Failed to parse int setting [" + setting + "] with value [" + s + "]", e);
+        }
+    }
+
+    @Override
+    public Long getAsLong(String setting, Long defaultValue) {
+        String s = get(setting);
+        try {
+            return s == null ? defaultValue : Long.parseLong(s);
+        } catch (NumberFormatException e) {
+            throw new SettingsException("Failed to parse long setting [" + setting + "] with value [" + s + "]", e);
+        }
+    }
+
+    @Override
+    public Boolean getAsBoolean(String setting, Boolean defaultValue) {
+        String value = get(setting);
+        if (value == null) {
+            return defaultValue;
+        }
+        return !("false".equals(value) || "0".equals(value) || "off".equals(value) || "no".equals(value));
+    }
+
+    @Override
+    public TimeValue getAsTime(String setting, TimeValue defaultValue) {
+        return TimeValue.parseTimeValue(get(setting), defaultValue);
+    }
+
+    @Override
+    public ByteSizeValue getAsBytesSize(String setting, ByteSizeValue defaultValue) {
+        return ByteSizeValue.parseBytesSizeValue(get(setting), defaultValue);
+    }
+
+    @Override
+    public String[] getAsArray(String settingPrefix) {
+        return getAsArray(settingPrefix, EMPTY_ARRAY);
+    }
+
+    @Override
+    public String[] getAsArray(String settingPrefix, String[] defaultArray) {
+        List<String> result = new ArrayList<>();
+        if (get(settingPrefix) != null) {
+            String[] strings = splitStringByCommaToArray(get(settingPrefix));
+            if (strings.length > 0) {
+                for (String string : strings) {
+                    result.add(string.trim());
+                }
+            }
+        }
+        int counter = 0;
+        while (true) {
+            String value = get(settingPrefix + '.' + (counter++));
+            if (value == null) {
+                break;
+            }
+            result.add(value.trim());
+        }
+        if (result.isEmpty()) {
+            return defaultArray;
+        }
+        return result.toArray(new String[0]);
+    }
+
+    @Override
+    public Map<String, org.xbib.content.Settings> getGroups(String prefix) {
+        String settingPrefix = prefix;
+        if (settingPrefix.charAt(settingPrefix.length() - 1) != '.') {
+            settingPrefix = settingPrefix + ".";
+        }
+        // we don't really care that it might happen twice
+        TinyMap.Builder<String, TinyMap.Builder<String, String>> hashMap = TinyMap.builder();
+        for (String o : this.map.keySet()) {
+            if (o.startsWith(settingPrefix)) {
+                String nameValue = o.substring(settingPrefix.length());
+                int dotIndex = nameValue.indexOf('.');
+                if (dotIndex == -1) {
+                    throw new SettingsException("failed to get setting group for ["
+                            + settingPrefix
+                            + "] setting prefix and setting [" + o + "] because of a missing '.'");
+                }
+                String name = nameValue.substring(0, dotIndex);
+                String value = nameValue.substring(dotIndex + 1);
+                Map<String, String> groupSettings = hashMap.computeIfAbsent(name, k -> TinyMap.builder());
+                groupSettings.put(value, get(o));
+            }
+        }
+        TinyMap.Builder<String, org.xbib.content.Settings> retVal = TinyMap.builder();
+        for (String key : hashMap.keySet()) {
+            TinyMap.Builder<String, String> value = hashMap.get(key);
+            retVal.put(key, new DatastructureSettings(value.build()));
+        }
+        return retVal.build();
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        return this == o || !(o == null || getClass() != o.getClass()) && map.equals(((DatastructureSettings) o).map);
+    }
+
+    @Override
+    public int hashCode() {
+        return map.hashCode();
+    }
+
+    private void processSetting(Map<String, Object> map, String prefix, String setting, String value) {
+        int prefixLength = setting.indexOf('.');
+        if (prefixLength == -1) {
+            @SuppressWarnings("unchecked")
+            Map<String, Object> innerMap = (Map<String, Object>) map.get(prefix + setting);
+            if (innerMap != null) {
+                for (String k : innerMap.keySet()) {
+                    Object v = innerMap.get(k);
+                    map.put(prefix + setting + "." + k, v);
+                }
+            }
+            map.put(prefix + setting, value);
+        } else {
+            String key = setting.substring(0, prefixLength);
+            String rest = setting.substring(prefixLength + 1);
+            Object existingValue = map.get(prefix + key);
+            if (existingValue == null) {
+                Map<String, Object> newMap = TinyMap.builder();
+                processSetting(newMap, "", rest, value);
+                map.put(key, newMap);
+            } else {
+                if (existingValue instanceof Map) {
+                    @SuppressWarnings("unchecked")
+                    Map<String, Object> innerMap = (Map<String, Object>) existingValue;
+                    processSetting(innerMap, "", rest, value);
+                    map.put(key, innerMap);
+                } else {
+                    processSetting(map, prefix + key + ".", rest, value);
+                }
+            }
+        }
+    }
+
+    private Object convertMapsToArrays(Map<String, Object> map) {
+        if (map.isEmpty()) {
+            return map;
+        }
+        boolean isArray = true;
+        int maxIndex = -1;
+        for (String key : map.keySet()) {
+            Object value = map.get(key);
+            if (isArray) {
+                try {
+                    int index = Integer.parseInt(key);
+                    if (index >= 0) {
+                        maxIndex = Math.max(maxIndex, index);
+                    } else {
+                        isArray = false;
+                    }
+                } catch (NumberFormatException ex) {
+                    isArray = false;
+                }
+            }
+            if (value instanceof Map) {
+                @SuppressWarnings("unchecked")
+                Map<String, Object> valMap = (Map<String, Object>) value;
+                map.put(key, convertMapsToArrays(valMap));
+            }
+        }
+        if (isArray && (maxIndex + 1) == map.size()) {
+            ArrayList<Object> newValue = new ArrayList<>(maxIndex + 1);
+            for (int i = 0; i <= maxIndex; i++) {
+                Object obj = map.get(Integer.toString(i));
+                if (obj == null) {
+                    return map;
+                }
+                newValue.add(obj);
+            }
+            return newValue;
+        }
+        return map;
+    }
+
+    public boolean isEmpty() {
+        return map.isEmpty();
+    }
+
+    @Override
+    public void close() throws IOException {
+    }
+
+}

content-settings-datastructures/src/main/java/org/xbib/content/settings/datastructures/DatastructureSettingsBuilder.java

@@ -0,0 +1,355 @@
+package org.xbib.content.settings.datastructures;
+
+import org.xbib.content.PlaceholderResolver;
+import org.xbib.content.PropertyPlaceholder;
+import org.xbib.content.Settings;
+import org.xbib.content.SettingsBuilder;
+import org.xbib.content.SettingsException;
+import org.xbib.content.SettingsLoader;
+import org.xbib.datastructures.tiny.TinyMap;
+
+import java.io.BufferedReader;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Path;
+import java.time.DateTimeException;
+import java.time.LocalDate;
+import java.time.format.DateTimeFormatter;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.TimeUnit;
+import java.util.stream.Collectors;
+
+/**
+ *
+ */
+public class DatastructureSettingsBuilder implements SettingsBuilder {
+
+    private final SettingsLoaderService settingsLoaderService = SettingsLoaderService.getInstance();
+
+    private final TinyMap.Builder<String, String> map;
+
+    public DatastructureSettingsBuilder() {
+        map = TinyMap.builder();
+    }
+
+    public Map<String, String> map() {
+        return map;
+    }
+
+    public String remove(String key) {
+        return map.remove(key);
+    }
+
+    public String get(String key) {
+        return map.get(key);
+    }
+
+    @Override
+    public boolean isEmpty() {
+        return map.isEmpty();
+    }
+
+    /**
+     * Sets a setting with the provided setting key and value.
+     *
+     * @param key   The setting key
+     * @param value The setting value
+     * @return The builder
+     */
+    @Override
+    public DatastructureSettingsBuilder put(String key, String value) {
+        map.put(key, value);
+        return this;
+    }
+
+    /**
+     * Sets a setting with the provided setting key and class as value.
+     *
+     * @param key   The setting key
+     * @param clazz The setting class value
+     * @return The builder
+     */
+    @Override
+    public DatastructureSettingsBuilder put(String key, Class<?> clazz) {
+        map.put(key, clazz.getName());
+        return this;
+    }
+
+    /**
+     * Sets the setting with the provided setting key and the boolean value.
+     *
+     * @param setting The setting key
+     * @param value   The boolean value
+     * @return The builder
+     */
+    @Override
+    public DatastructureSettingsBuilder put(String setting, boolean value) {
+        put(setting, String.valueOf(value));
+        return this;
+    }
+
+    /**
+     * Sets the setting with the provided setting key and the int value.
+     *
+     * @param setting The setting key
+     * @param value   The int value
+     * @return The builder
+     */
+    @Override
+    public DatastructureSettingsBuilder put(String setting, int value) {
+        put(setting, String.valueOf(value));
+        return this;
+    }
+
+    /**
+     * Sets the setting with the provided setting key and the long value.
+     *
+     * @param setting The setting key
+     * @param value   The long value
+     * @return The builder
+     */
+    @Override
+    public DatastructureSettingsBuilder put(String setting, long value) {
+        put(setting, String.valueOf(value));
+        return this;
+    }
+
+    /**
+     * Sets the setting with the provided setting key and the float value.
+     *
+     * @param setting The setting key
+     * @param value   The float value
+     * @return The builder
+     */
+    @Override
+    public DatastructureSettingsBuilder put(String setting, float value) {
+        put(setting, String.valueOf(value));
+        return this;
+    }
+
+    /**
+     * Sets the setting with the provided setting key and the double value.
+     *
+     * @param setting The setting key
+     * @param value   The double value
+     * @return The builder
+     */
+    @Override
+    public DatastructureSettingsBuilder put(String setting, double value) {
+        put(setting, String.valueOf(value));
+        return this;
+    }
+
+    /**
+     * Sets the setting with the provided setting key and an array of values.
+     *
+     * @param setting The setting key
+     * @param values  The values
+     * @return The builder
+     */
+    @Override
+    public DatastructureSettingsBuilder putArray(String setting, String... values) {
+        remove(setting);
+        int counter = 0;
+        while (true) {
+            String value = map.remove(setting + '.' + (counter++));
+            if (value == null) {
+                break;
+            }
+        }
+        for (int i = 0; i < values.length; i++) {
+            put(setting + '.' + i, values[i]);
+        }
+        return this;
+    }
+
+    /**
+     * Sets the setting with the provided setting key and an array of values.
+     *
+     * @param setting The setting key
+     * @param values  The values
+     * @return The builder
+     */
+    @Override
+    public DatastructureSettingsBuilder putArray(String setting, List<String> values) {
+        remove(setting);
+        int counter = 0;
+        while (true) {
+            String value = map.remove(setting + '.' + (counter++));
+            if (value == null) {
+                break;
+            }
+        }
+        for (int i = 0; i < values.size(); i++) {
+            put(setting + '.' + i, values.get(i));
+        }
+        return this;
+    }
+
+    /**
+     * Sets the setting group.
+     *
+     * @param settingPrefix setting prefix
+     * @param groupName     group name
+     * @param settings      settings
+     * @param values        values
+     * @return a builder
+     * @throws SettingsException if setting fails
+     */
+    @Override
+    public DatastructureSettingsBuilder put(String settingPrefix, String groupName, String[] settings, String[] values)
+            throws SettingsException {
+        if (settings.length != values.length) {
+            throw new SettingsException("the settings length must match the value length");
+        }
+        for (int i = 0; i < settings.length; i++) {
+            if (values[i] == null) {
+                continue;
+            }
+            put(settingPrefix + "" + groupName + "." + settings[i], values[i]);
+        }
+        return this;
+    }
+
+    /**
+     * Sets all the provided settings.
+     *
+     * @param settings settings
+     * @return builder
+     */
+    @Override
+    public DatastructureSettingsBuilder put(Settings settings) {
+        map.putAll(settings.getAsMap());
+        return this;
+    }
+
+    /**
+     * Sets all the provided settings.
+     *
+     * @param settings settings
+     * @return a builder
+     */
+    @Override
+    public DatastructureSettingsBuilder put(Map<String, String> settings) {
+        map.putAll(settings);
+        return this;
+    }
+
+    /**
+     * Loads settings from the actual string content that represents them using the
+     * {@link SettingsLoaderService#loaderFromString(String)}.
+     *
+     * @param source source
+     * @return builder
+     */
+    @Override
+    public DatastructureSettingsBuilder loadFromString(String source) {
+        SettingsLoader settingsLoader = settingsLoaderService.loaderFromString(source);
+        try {
+            Map<String, String> loadedSettings = settingsLoader.load(source);
+            put(loadedSettings);
+        } catch (Exception e) {
+            throw new SettingsException("failed to load settings from [" + source + "]", e);
+        }
+        return this;
+    }
+
+    /**
+     * Loads settings from a resource.
+     *
+     * @param resourceName resource name
+     * @param inputStream  input stream
+     * @return builder
+     */
+    @Override
+    public DatastructureSettingsBuilder loadFromResource(String resourceName, InputStream inputStream) throws SettingsException {
+        SettingsLoader settingsLoader = settingsLoaderService.loaderFromResource(resourceName);
+        try (BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream, StandardCharsets.UTF_8))) {
+            Map<String, String> loadedSettings = settingsLoader.load(bufferedReader.lines().collect(Collectors.joining()));
+            put(loadedSettings);
+        } catch (Exception e) {
+            throw new SettingsException("failed to load settings from [" + resourceName + "]", e);
+        }
+        return this;
+    }
+
+    /**
+     * Load system properties to this settings.
+     *
+     * @return builder
+     */
+    @Override
+    public DatastructureSettingsBuilder loadFromSystemProperties() {
+        for (Map.Entry<Object, Object> entry : System.getProperties().entrySet()) {
+            put((String) entry.getKey(), (String) entry.getValue());
+        }
+        return this;
+    }
+
+    /**
+     * Load system environment to this settings.
+     *
+     * @return builder
+     */
+    @Override
+    public DatastructureSettingsBuilder loadFromSystemEnvironment() {
+        for (Map.Entry<String, String> entry : System.getenv().entrySet()) {
+            put(entry.getKey(), entry.getValue());
+        }
+        return this;
+    }
+
+    @Override
+    public DatastructureSettingsBuilder replacePropertyPlaceholders(PropertyPlaceholder propertyPlaceholder,
+                                                                    PlaceholderResolver placeholderResolver) {
+        map.replaceAll((k, v) -> propertyPlaceholder.replacePlaceholders(v, placeholderResolver));
+        return this;
+    }
+
+    /**
+     * Runs across all the settings set on this builder and replaces {@code ${...}} elements in the
+     * each setting value according to the following logic:
+     * <p>
+     * First, tries to resolve it against a System property ({@link System#getProperty(String)}), next,
+     * tries and resolve it against an environment variable ({@link System#getenv(String)}), next,
+     * tries and resolve it against a date pattern to resolve the current date,
+     * and last, tries and replace it with another setting already set on this builder.
+     *
+     * @return builder
+     */
+    @Override
+    public DatastructureSettingsBuilder replacePropertyPlaceholders() {
+        return replacePropertyPlaceholders(new PropertyPlaceholder("${", "}", false),
+                placeholderName -> {
+                    // system property
+                    String value = System.getProperty(placeholderName);
+                    if (value != null) {
+                        return value;
+                    }
+                    // environment
+                    value = System.getenv(placeholderName);
+                    if (value != null) {
+                        return value;
+                    }
+                    // current date
+                    try {
+                        return DateTimeFormatter.ofPattern(placeholderName).format(LocalDate.now());
+                    } catch (IllegalArgumentException | DateTimeException e) {
+                        return map.get(placeholderName);
+                    }
+                }
+        );
+    }
+
+    @Override
+    public DatastructureSettingsBuilder setRefresh(Path path, long initialDelay, long period, TimeUnit timeUnit) {
+        return this;
+    }
+
+    @Override
+    public DatastructureSettings build() {
+        return new DatastructureSettings(map.build());
+    }
+}

content-settings-datastructures/src/main/java/org/xbib/content/settings/datastructures/ExceptionFormatter.java

@@ -1,56 +0,0 @@
-package org.xbib.content.settings.datastructures;
-
-import java.io.PrintWriter;
-import java.io.StringWriter;
-
-/**
- * Format java exception messages and stack traces.
- */
-public final class ExceptionFormatter {
-
-    private ExceptionFormatter() {
-    }
-
-    /**
-     * Format exception with stack trace.
-     *
-     * @param t the thrown object
-     * @return the formatted exception
-     */
-    public static String format(Throwable t) {
-        StringBuilder sb = new StringBuilder();
-        append(sb, t, 0, true);
-        return sb.toString();
-    }
-
-    /**
-     * Append Exception to string builder.
-     */
-    private static void append(StringBuilder sb, Throwable t, int level, boolean details) {
-        if (((t != null) && (t.getMessage() != null)) && (!t.getMessage().isEmpty())) {
-            if (details && (level > 0)) {
-                sb.append("\n\nCaused by\n");
-            }
-            sb.append(t.getMessage());
-        }
-        if (details) {
-            if (t != null) {
-                if ((t.getMessage() != null) && (t.getMessage().isEmpty())) {
-                    sb.append("\n\nCaused by ");
-                } else {
-                    sb.append("\n\n");
-                }
-            }
-            StringWriter sw = new StringWriter();
-            if (t != null) {
-                t.printStackTrace(new PrintWriter(sw));
-            }
-            sb.append(sw.toString());
-        }
-        if (t != null) {
-            if (t.getCause() != null) {
-                append(sb, t.getCause(), level + 1, details);
-            }
-        }
-    }
-}

content-settings-datastructures/src/main/java/org/xbib/content/settings/datastructures/PlaceholderResolver.java

@@ -1,16 +0,0 @@
-package org.xbib.content.settings.datastructures;
-
-/**
- * Strategy interface used to resolve replacement values for placeholders contained in Strings.
- */
-@FunctionalInterface
-public interface PlaceholderResolver {
-
-    /**
-     * Resolves the supplied placeholder name into the replacement value.
-     *
-     * @param placeholderName the name of the placeholder to resolve.
-     * @return the replacement value or <code>null</code> if no replacement is to be made.
-     */
-    String resolvePlaceholder(String placeholderName);
-}

content-settings-datastructures/src/main/java/org/xbib/content/settings/datastructures/PropertiesSettingsLoader.java

@@ -1,7 +1,7 @@
 package org.xbib.content.settings.datastructures;
 
+import org.xbib.content.SettingsLoader;
 import org.xbib.datastructures.tiny.TinyMap;
-
 import java.io.IOException;
 import java.io.StringReader;
 import java.util.Map;

content-settings-datastructures/src/main/java/org/xbib/content/settings/datastructures/Settings.java

@@ -1,656 +0,0 @@
-package org.xbib.content.settings.datastructures;
-
-import org.xbib.datastructures.api.ByteSizeValue;
-import org.xbib.datastructures.api.TimeValue;
-import org.xbib.datastructures.tiny.TinyMap;
-
-import java.io.BufferedReader;
-import java.io.InputStream;
-import java.io.InputStreamReader;
-import java.nio.charset.StandardCharsets;
-import java.time.DateTimeException;
-import java.time.LocalDate;
-import java.time.format.DateTimeFormatter;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Map;
-import java.util.stream.Collectors;
-
-public class Settings implements AutoCloseable {
-
-    public static final Settings EMPTY_SETTINGS = new Builder().build();
-
-    public static final String[] EMPTY_ARRAY = new String[0];
-
-    private final TinyMap<String, String> map;
-
-    private Settings(TinyMap<String, String> map) {
-        this.map = map;
-    }
-
-    public static Settings fromMap(Map<String, Object> map) {
-        Builder builder = new Builder();
-        for (Map.Entry<String, Object> entry : map.entrySet()) {
-            builder.put(entry.getKey(), entry.getValue() != null ? entry.getValue().toString() : null);
-        }
-        return builder.build();
-    }
-
-    public static void toMap(Settings settings, Map<String, Object> map) {
-        for (String key : settings.getAsMap().keySet()) {
-            map.put(key, settings.get(key));
-        }
-    }
-
-    /**
-     * Returns a builder to be used in order to build settings.
-     * @return a builder
-     */
-    public static Builder settingsBuilder() {
-        return new Builder();
-    }
-
-    public static String[] splitStringByCommaToArray(final String s) {
-        return splitStringToArray(s, ',');
-    }
-
-    public static String[] splitStringToArray(final String s, final char c) {
-        if (s.length() == 0) {
-            return EMPTY_ARRAY;
-        }
-        final char[] chars = s.toCharArray();
-        int count = 1;
-        for (final char x : chars) {
-            if (x == c) {
-                count++;
-            }
-        }
-        final String[] result = new String[count];
-        final int len = chars.length;
-        int start = 0;
-        int pos = 0;
-        int i = 0;
-        for (; pos < len; pos++) {
-            if (chars[pos] == c) {
-                int size = pos - start;
-                if (size > 0) {
-                    result[i++] = new String(chars, start, size);
-                }
-                start = pos + 1;
-            }
-        }
-        int size = pos - start;
-        if (size > 0) {
-            result[i++] = new String(chars, start, size);
-        }
-        if (i != count) {
-            String[] result1 = new String[i];
-            System.arraycopy(result, 0, result1, 0, i);
-            return result1;
-        }
-        return result;
-    }
-
-    public Map<String, String> getAsMap() {
-        return this.map;
-    }
-
-    public Map<String, Object> getAsStructuredMap() {
-        TinyMap.Builder<String, Object> stringObjectMap = TinyMap.builder();
-        for (String key : map.keySet()) {
-            String value = map.get(key);
-            processSetting(stringObjectMap, "", key, value);
-        }
-        for (String key : stringObjectMap.keySet()) {
-            Object object = stringObjectMap.get(key);
-            if (object instanceof Map) {
-                @SuppressWarnings("unchecked")
-                Map<String, Object> valMap = (Map<String, Object>) object;
-                stringObjectMap.put(key, convertMapsToArrays(valMap));
-            }
-        }
-        return stringObjectMap.build();
-    }
-
-    public Settings getByPrefix(String prefix) {
-        Builder builder = new Builder();
-        for (String key : map.keySet()) {
-            String value = map.get(key);
-            if (key.startsWith(prefix)) {
-                if (key.length() < prefix.length()) {
-                    continue;
-                }
-                builder.put(key.substring(prefix.length()), value);
-            }
-        }
-        return builder.build();
-    }
-
-    public Settings getAsSettings(String setting) {
-        return getByPrefix(setting + ".");
-    }
-
-    public boolean containsSetting(String setting) {
-        if (map.containsKey(setting)) {
-            return true;
-        }
-        for (String key : map.keySet()) {
-            if (key.startsWith(setting)) {
-                return true;
-            }
-        }
-        return false;
-    }
-
-    public String get(String setting) {
-        return map.get(setting);
-    }
-
-    public String get(String setting, String defaultValue) {
-        String s = map.get(setting);
-        return s == null ? defaultValue : s;
-    }
-
-    public Float getAsFloat(String setting, Float defaultValue) {
-        String s = get(setting);
-        try {
-            return s == null ? defaultValue : Float.parseFloat(s);
-        } catch (NumberFormatException e) {
-            throw new SettingsException("Failed to parse float setting [" + setting + "] with value [" + s + "]", e);
-        }
-    }
-
-    public Double getAsDouble(String setting, Double defaultValue) {
-        String s = get(setting);
-        try {
-            return s == null ? defaultValue : Double.parseDouble(s);
-        } catch (NumberFormatException e) {
-            throw new SettingsException("Failed to parse double setting [" + setting + "] with value [" + s + "]", e);
-        }
-    }
-
-    public Integer getAsInt(String setting, Integer defaultValue) {
-        String s = get(setting);
-        try {
-            return s == null ? defaultValue : Integer.parseInt(s);
-        } catch (NumberFormatException e) {
-            throw new SettingsException("Failed to parse int setting [" + setting + "] with value [" + s + "]", e);
-        }
-    }
-
-    public Long getAsLong(String setting, Long defaultValue) {
-        String s = get(setting);
-        try {
-            return s == null ? defaultValue : Long.parseLong(s);
-        } catch (NumberFormatException e) {
-            throw new SettingsException("Failed to parse long setting [" + setting + "] with value [" + s + "]", e);
-        }
-    }
-
-    public Boolean getAsBoolean(String setting, Boolean defaultValue) {
-        String value = get(setting);
-        if (value == null) {
-            return defaultValue;
-        }
-        return !("false".equals(value) || "0".equals(value) || "off".equals(value) || "no".equals(value));
-    }
-
-    public TimeValue getAsTime(String setting, TimeValue defaultValue) {
-        return TimeValue.parseTimeValue(get(setting), defaultValue);
-    }
-
-    public ByteSizeValue getAsBytesSize(String setting, ByteSizeValue defaultValue) {
-        return ByteSizeValue.parseBytesSizeValue(get(setting), defaultValue);
-    }
-
-    public String[] getAsArray(String settingPrefix) {
-        return getAsArray(settingPrefix, EMPTY_ARRAY);
-    }
-
-    public String[] getAsArray(String settingPrefix, String[] defaultArray) {
-        List<String> result = new ArrayList<>();
-        if (get(settingPrefix) != null) {
-            String[] strings = splitStringByCommaToArray(get(settingPrefix));
-            if (strings.length > 0) {
-                for (String string : strings) {
-                    result.add(string.trim());
-                }
-            }
-        }
-        int counter = 0;
-        while (true) {
-            String value = get(settingPrefix + '.' + (counter++));
-            if (value == null) {
-                break;
-            }
-            result.add(value.trim());
-        }
-        if (result.isEmpty()) {
-            return defaultArray;
-        }
-        return result.toArray(new String[0]);
-    }
-
-    public Map<String, Settings> getGroups(String prefix) {
-        String settingPrefix = prefix;
-        if (settingPrefix.charAt(settingPrefix.length() - 1) != '.') {
-            settingPrefix = settingPrefix + ".";
-        }
-        // we don't really care that it might happen twice
-        TinyMap.Builder<String, TinyMap.Builder<String, String>> hashMap = TinyMap.builder();
-        for (String o : this.map.keySet()) {
-            if (o.startsWith(settingPrefix)) {
-                String nameValue = o.substring(settingPrefix.length());
-                int dotIndex = nameValue.indexOf('.');
-                if (dotIndex == -1) {
-                    throw new SettingsException("failed to get setting group for ["
-                            + settingPrefix
-                            + "] setting prefix and setting [" + o + "] because of a missing '.'");
-                }
-                String name = nameValue.substring(0, dotIndex);
-                String value = nameValue.substring(dotIndex + 1);
-                Map<String, String> groupSettings = hashMap.computeIfAbsent(name, k -> TinyMap.builder());
-                groupSettings.put(value, get(o));
-            }
-        }
-        TinyMap.Builder<String, Settings> retVal = TinyMap.builder();
-        for (String key : hashMap.keySet()) {
-            TinyMap.Builder<String, String> value = hashMap.get(key);
-            retVal.put(key, new Settings(value.build()));
-        }
-        return retVal.build();
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        return this == o || !(o == null || getClass() != o.getClass()) && map.equals(((Settings) o).map);
-    }
-
-    @Override
-    public int hashCode() {
-        return map.hashCode();
-    }
-
-    private void processSetting(Map<String, Object> map, String prefix, String setting, String value) {
-        int prefixLength = setting.indexOf('.');
-        if (prefixLength == -1) {
-            @SuppressWarnings("unchecked")
-            Map<String, Object> innerMap = (Map<String, Object>) map.get(prefix + setting);
-            if (innerMap != null) {
-                for (String k : innerMap.keySet()) {
-                    Object v = innerMap.get(k);
-                    map.put(prefix + setting + "." + k, v);
-                }
-            }
-            map.put(prefix + setting, value);
-        } else {
-            String key = setting.substring(0, prefixLength);
-            String rest = setting.substring(prefixLength + 1);
-            Object existingValue = map.get(prefix + key);
-            if (existingValue == null) {
-                Map<String, Object> newMap = TinyMap.builder();
-                processSetting(newMap, "", rest, value);
-                map.put(key, newMap);
-            } else {
-                if (existingValue instanceof Map) {
-                    @SuppressWarnings("unchecked")
-                    Map<String, Object> innerMap = (Map<String, Object>) existingValue;
-                    processSetting(innerMap, "", rest, value);
-                    map.put(key, innerMap);
-                } else {
-                    processSetting(map, prefix + key + ".", rest, value);
-                }
-            }
-        }
-    }
-
-    private Object convertMapsToArrays(Map<String, Object> map) {
-        if (map.isEmpty()) {
-            return map;
-        }
-        boolean isArray = true;
-        int maxIndex = -1;
-        for (String key : map.keySet()) {
-            Object value = map.get(key);
-            if (isArray) {
-                try {
-                    int index = Integer.parseInt(key);
-                    if (index >= 0) {
-                        maxIndex = Math.max(maxIndex, index);
-                    } else {
-                        isArray = false;
-                    }
-                } catch (NumberFormatException ex) {
-                    isArray = false;
-                }
-            }
-            if (value instanceof Map) {
-                @SuppressWarnings("unchecked")
-                Map<String, Object> valMap = (Map<String, Object>) value;
-                map.put(key, convertMapsToArrays(valMap));
-            }
-        }
-        if (isArray && (maxIndex + 1) == map.size()) {
-            ArrayList<Object> newValue = new ArrayList<>(maxIndex + 1);
-            for (int i = 0; i <= maxIndex; i++) {
-                Object obj = map.get(Integer.toString(i));
-                if (obj == null) {
-                    return map;
-                }
-                newValue.add(obj);
-            }
-            return newValue;
-        }
-        return map;
-    }
-
-    public boolean isEmpty() {
-        return map.isEmpty();
-    }
-
-    @Override
-    public void close() {
-    }
-
-    /**
-     *
-     */
-    public static class Builder {
-
-        private final SettingsLoaderService settingsLoaderService = SettingsLoaderService.getInstance();
-
-        private final TinyMap.Builder<String, String> map;
-
-        private Builder() {
-            map = TinyMap.builder();
-        }
-
-        public Map<String, String> map() {
-            return map;
-        }
-
-        public String remove(String key) {
-            return map.remove(key);
-        }
-
-        public String get(String key) {
-            return map.get(key);
-        }
-
-        public boolean isEmpty() {
-            return map.isEmpty();
-        }
-
-        /**
-         * Sets a setting with the provided setting key and value.
-         *
-         * @param key   The setting key
-         * @param value The setting value
-         * @return The builder
-         */
-        public Builder put(String key, String value) {
-            map.put(key, value);
-            return this;
-        }
-
-        /**
-         * Sets a setting with the provided setting key and class as value.
-         *
-         * @param key   The setting key
-         * @param clazz The setting class value
-         * @return The builder
-         */
-        public Builder put(String key, Class<?> clazz) {
-            map.put(key, clazz.getName());
-            return this;
-        }
-
-        /**
-         * Sets the setting with the provided setting key and the boolean value.
-         *
-         * @param setting The setting key
-         * @param value   The boolean value
-         * @return The builder
-         */
-        public Builder put(String setting, boolean value) {
-            put(setting, String.valueOf(value));
-            return this;
-        }
-
-        /**
-         * Sets the setting with the provided setting key and the int value.
-         *
-         * @param setting The setting key
-         * @param value   The int value
-         * @return The builder
-         */
-        public Builder put(String setting, int value) {
-            put(setting, String.valueOf(value));
-            return this;
-        }
-
-        /**
-         * Sets the setting with the provided setting key and the long value.
-         *
-         * @param setting The setting key
-         * @param value   The long value
-         * @return The builder
-         */
-        public Builder put(String setting, long value) {
-            put(setting, String.valueOf(value));
-            return this;
-        }
-
-        /**
-         * Sets the setting with the provided setting key and the float value.
-         *
-         * @param setting The setting key
-         * @param value   The float value
-         * @return The builder
-         */
-        public Builder put(String setting, float value) {
-            put(setting, String.valueOf(value));
-            return this;
-        }
-
-        /**
-         * Sets the setting with the provided setting key and the double value.
-         *
-         * @param setting The setting key
-         * @param value   The double value
-         * @return The builder
-         */
-        public Builder put(String setting, double value) {
-            put(setting, String.valueOf(value));
-            return this;
-        }
-
-        /**
-         * Sets the setting with the provided setting key and an array of values.
-         *
-         * @param setting The setting key
-         * @param values  The values
-         * @return The builder
-         */
-        public Builder putArray(String setting, String... values) {
-            remove(setting);
-            int counter = 0;
-            while (true) {
-                String value = map.remove(setting + '.' + (counter++));
-                if (value == null) {
-                    break;
-                }
-            }
-            for (int i = 0; i < values.length; i++) {
-                put(setting + '.' + i, values[i]);
-            }
-            return this;
-        }
-
-        /**
-         * Sets the setting with the provided setting key and an array of values.
-         *
-         * @param setting The setting key
-         * @param values  The values
-         * @return The builder
-         */
-        public Builder putArray(String setting, List<String> values) {
-            remove(setting);
-            int counter = 0;
-            while (true) {
-                String value = map.remove(setting + '.' + (counter++));
-                if (value == null) {
-                    break;
-                }
-            }
-            for (int i = 0; i < values.size(); i++) {
-                put(setting + '.' + i, values.get(i));
-            }
-            return this;
-        }
-
-        /**
-         * Sets the setting group.
-         * @param settingPrefix setting prefix
-         * @param groupName group name
-         * @param settings settings
-         * @param values values
-         * @return a builder
-         * @throws SettingsException if setting fails
-         */
-        public Builder put(String settingPrefix, String groupName, String[] settings, String[] values)
-                throws SettingsException {
-            if (settings.length != values.length) {
-                throw new SettingsException("the settings length must match the value length");
-            }
-            for (int i = 0; i < settings.length; i++) {
-                if (values[i] == null) {
-                    continue;
-                }
-                put(settingPrefix + "" + groupName + "." + settings[i], values[i]);
-            }
-            return this;
-        }
-
-        /**
-         * Sets all the provided settings.
-         * @param settings settings
-         * @return builder
-         */
-        public Builder put(Settings settings) {
-            map.putAll(settings.getAsMap());
-            return this;
-        }
-
-        /**
-         * Sets all the provided settings.
-         *
-         * @param settings settings
-         * @return a builder
-         */
-        public Builder put(Map<String, String> settings) {
-            map.putAll(settings);
-            return this;
-        }
-
-        /**
-         * Loads settings from the actual string content that represents them using the
-         * {@link SettingsLoaderService#loaderFromString(String)}.
-         *
-         * @param source source
-         * @return builder
-         */
-        public Builder loadFromString(String source) {
-            SettingsLoader settingsLoader = settingsLoaderService.loaderFromString(source);
-            try {
-                Map<String, String> loadedSettings = settingsLoader.load(source);
-                put(loadedSettings);
-            } catch (Exception e) {
-                throw new SettingsException("failed to load settings from [" + source + "]", e);
-            }
-            return this;
-        }
-
-        /**
-         * Loads settings from a resource.
-         * @param resourceName resource name
-         * @param inputStream input stream
-         * @return builder
-         */
-        public Builder loadFromResource(String resourceName, InputStream inputStream) throws SettingsException {
-            SettingsLoader settingsLoader = settingsLoaderService.loaderFromResource(resourceName);
-            try (BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream, StandardCharsets.UTF_8))) {
-                Map<String, String> loadedSettings = settingsLoader.load(bufferedReader.lines().collect(Collectors.joining()));
-                put(loadedSettings);
-            } catch (Exception e) {
-                throw new SettingsException("failed to load settings from [" + resourceName + "]", e);
-            }
-            return this;
-        }
-
-        /**
-         * Load system properties to this settings.
-         * @return builder
-         */
-        public Builder loadFromSystemProperties() {
-            for (Map.Entry<Object, Object> entry : System.getProperties().entrySet()) {
-                put((String) entry.getKey(), (String) entry.getValue());
-            }
-            return this;
-        }
-
-        /**
-         * Load system environment to this settings.
-         * @return builder
-         */
-        public Builder loadFromSystemEnvironment() {
-            for (Map.Entry<String, String> entry : System.getenv().entrySet()) {
-                put(entry.getKey(), entry.getValue());
-            }
-            return this;
-        }
-
-        public Builder replacePropertyPlaceholders(PropertyPlaceholder propertyPlaceholder,
-                                                   PlaceholderResolver placeholderResolver) {
-            map.replaceAll((k, v) -> propertyPlaceholder.replacePlaceholders(v, placeholderResolver));
-            return this;
-        }
-
-        /**
-         * Runs across all the settings set on this builder and replaces {@code ${...}} elements in the
-         * each setting value according to the following logic:
-         *
-         * First, tries to resolve it against a System property ({@link System#getProperty(String)}), next,
-         * tries and resolve it against an environment variable ({@link System#getenv(String)}), next,
-         * tries and resolve it against a date pattern to resolve the current date,
-         * and last, tries and replace it with another setting already set on this builder.
-         * @return builder
-         */
-        public Builder replacePropertyPlaceholders() {
-            return replacePropertyPlaceholders(new PropertyPlaceholder("${", "}", false),
-                placeholderName -> {
-                    // system property
-                    String value = System.getProperty(placeholderName);
-                    if (value != null) {
-                        return value;
-                    }
-                    // environment
-                    value = System.getenv(placeholderName);
-                    if (value != null) {
-                        return value;
-                    }
-                    // current date
-                    try {
-                        return DateTimeFormatter.ofPattern(placeholderName).format(LocalDate.now());
-                    } catch (IllegalArgumentException | DateTimeException e) {
-                        return map.get(placeholderName);
-                    }
-                }
-            );
-        }
-
-        public Settings build() {
-            return new Settings(map.build());
-        }
-    }
-}

content-settings-datastructures/src/main/java/org/xbib/content/settings/datastructures/SettingsLoader.java

@@ -1,30 +0,0 @@
-package org.xbib.content.settings.datastructures;
-
-import java.io.IOException;
-import java.util.Map;
-import java.util.Set;
-
-/**
- * Provides the ability to load settings from
- * the actual source content that represents them.
- */
-public interface SettingsLoader {
-
-    /**
-     * Suffices for file names to load from.
-     * @return a set of suffices
-     */
-    Set<String> suffixes();
-
-    /**
-     * Loads the settings from a source string.
-     * @param source the source
-     * @return a Map
-     * @throws IOException if load fails
-     */
-    Map<String, String> load(String source) throws IOException;
-
-    Map<String, String> load(Map<String, Object> source) throws IOException;
-
-    boolean canLoad(String source);
-}

content-settings-datastructures/src/main/resources/META-INF/services/org.xbib.content.SettingsBuilder

@@ -0,0 +1 @@
+org.xbib.content.settings.datastructures.DatastructureSettingsBuilder

content-settings-datastructures/src/test/java/org/xbib/content/settings/datastructures/test/SettingsTest.java

@@ -1,7 +1,7 @@
 package org.xbib.content.settings.datastructures.test;
 
 import org.junit.jupiter.api.Test;
-import org.xbib.content.settings.datastructures.Settings;
+import org.xbib.content.Settings;
 
 import java.io.ByteArrayInputStream;
 import java.nio.charset.StandardCharsets;
@@ -18,8 +18,8 @@ public class SettingsTest {
 
     @Test
     public void testEmpty() {
-        Settings settings = Settings.EMPTY_SETTINGS;
+        Settings settings = Settings.emptySettings();
-        assertTrue(settings.getAsMap().isEmpty());
+        assertTrue(settings.isEmpty());
     }
 
     @Test

content-settings/src/main/java/module-info.java

@@ -1,6 +1,15 @@
+import org.xbib.content.SettingsBuilder;
+import org.xbib.content.SettingsLoader;
+import org.xbib.content.settings.ContentSettingsBuilder;
+import org.xbib.content.settings.PropertiesSettingsLoader;
+
 module org.xbib.content.settings {
-    uses org.xbib.content.SettingsLoader;
+    uses SettingsLoader;
+    provides SettingsLoader with PropertiesSettingsLoader;
+    uses SettingsBuilder;
+    provides SettingsBuilder with ContentSettingsBuilder;
     exports org.xbib.content.settings;
     requires org.xbib.content.core;
+    requires org.xbib.datastructures.api;
     requires transitive org.xbib.datastructures.tiny;
 }

content-settings/src/main/java/org/xbib/content/settings/ContentSettings.java

@@ -1,22 +1,16 @@
 package org.xbib.content.settings;
 
+import org.xbib.content.Settings;
 import org.xbib.content.SettingsLoader;
+import org.xbib.datastructures.api.ByteSizeValue;
+import org.xbib.datastructures.api.TimeValue;
 import org.xbib.datastructures.tiny.TinyMap;
-import org.xbib.content.util.unit.ByteSizeValue;
-import org.xbib.content.util.unit.TimeValue;
 import java.io.IOException;
-import java.io.InputStream;
-import java.io.InputStreamReader;
 import java.io.Reader;
 import java.io.StringWriter;
 import java.io.Writer;
-import java.net.URL;
-import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.nio.file.Path;
-import java.time.DateTimeException;
-import java.time.LocalDate;
-import java.time.format.DateTimeFormatter;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
@@ -25,12 +19,9 @@ import java.util.concurrent.ScheduledExecutorService;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicBoolean;
 
-/**
+public class ContentSettings implements Settings, AutoCloseable {
- *
- */
-public class Settings implements AutoCloseable {
 
-    public static final Settings EMPTY_SETTINGS = new Builder().build();
+    public static final ContentSettings EMPTY_SETTINGS = new ContentSettingsBuilder().build();
 
     public static final String[] EMPTY_ARRAY = new String[0];
 
@@ -40,11 +31,11 @@ public class Settings implements AutoCloseable {
 
     private Map<String, String> map;
 
-    private Settings(Map<String, String> map) {
+    protected ContentSettings(Map<String, String> map) {
         this(map, null, 0L, 0L, TimeUnit.SECONDS);
     }
 
-    private Settings(Map<String, String> map, Path path, long initialDelay, long period, TimeUnit timeUnit) {
+    protected ContentSettings(Map<String, String> map, Path path, long initialDelay, long period, TimeUnit timeUnit) {
         TinyMap.Builder<String, String> builder = TinyMap.builder();
         builder.putAll(map);
         this.map = builder.build();
@@ -53,28 +44,20 @@ public class Settings implements AutoCloseable {
         }
     }
 
-    public static Settings readSettingsFromMap(Map<String, Object> map) {
+    public static ContentSettings readSettingsFromMap(Map<String, Object> map) {
-        Builder builder = new Builder();
+        ContentSettingsBuilder builder = new ContentSettingsBuilder();
         for (Map.Entry<String, Object> entry : map.entrySet()) {
             builder.put(entry.getKey(), entry.getValue() != null ? entry.getValue().toString() : null);
         }
         return builder.build();
     }
 
-    public static void writeSettingsToMap(Settings settings, Map<String, Object> map) {
+    public static void writeSettingsToMap(ContentSettings settings, Map<String, Object> map) {
         for (String key : settings.getAsMap().keySet()) {
             map.put(key, settings.get(key));
         }
     }
 
-    /**
-     * Returns a builder to be used in order to build settings.
-     * @return a builder
-     */
-    public static Builder settingsBuilder() {
-        return new Builder();
-    }
-
     public static String[] splitStringByCommaToArray(final String s) {
         return splitStringToArray(s, ',');
     }
@@ -136,10 +119,12 @@ public class Settings implements AutoCloseable {
         }
     }
 
+    @Override
     public Map<String, String> getAsMap() {
         return this.map;
     }
 
+    @Override
     public Map<String, Object> getAsStructuredMap() {
         TinyMap.Builder<String, Object> stringObjectMap = TinyMap.builder();
         for (Map.Entry<String, String> entry : this.map.entrySet()) {
@@ -155,8 +140,9 @@ public class Settings implements AutoCloseable {
         return stringObjectMap.build();
     }
 
-    public Settings getByPrefix(String prefix) {
+    @Override
-        Builder builder = new Builder();
+    public ContentSettings getByPrefix(String prefix) {
+        ContentSettingsBuilder builder = new ContentSettingsBuilder();
         for (Map.Entry<String, String> entry : map.entrySet()) {
             if (entry.getKey().startsWith(prefix)) {
                 if (entry.getKey().length() < prefix.length()) {
@@ -168,10 +154,12 @@ public class Settings implements AutoCloseable {
         return builder.build();
     }
 
-    public Settings getAsSettings(String setting) {
+    @Override
+    public ContentSettings getAsSettings(String setting) {
         return getByPrefix(setting + ".");
     }
 
+    @Override
     public boolean containsSetting(String setting) {
         if (map.containsKey(setting)) {
             return true;
@@ -184,15 +172,23 @@ public class Settings implements AutoCloseable {
         return false;
     }
 
+    @Override
+    public boolean isEmpty() {
+        return map.isEmpty();
+    }
+
+    @Override
     public String get(String setting) {
         return map.get(setting);
     }
 
+    @Override
     public String get(String setting, String defaultValue) {
         String retVal = map.get(setting);
         return retVal == null ? defaultValue : retVal;
     }
 
+    @Override
     public Float getAsFloat(String setting, Float defaultValue) {
         String sValue = get(setting);
         if (sValue == null) {
@@ -205,6 +201,7 @@ public class Settings implements AutoCloseable {
         }
     }
 
+    @Override
     public Double getAsDouble(String setting, Double defaultValue) {
         String sValue = get(setting);
         if (sValue == null) {
@@ -217,6 +214,7 @@ public class Settings implements AutoCloseable {
         }
     }
 
+    @Override
     public Integer getAsInt(String setting, Integer defaultValue) {
         String sValue = get(setting);
         if (sValue == null) {
@@ -229,6 +227,7 @@ public class Settings implements AutoCloseable {
         }
     }
 
+    @Override
     public Long getAsLong(String setting, Long defaultValue) {
         String sValue = get(setting);
         if (sValue == null) {
@@ -241,6 +240,7 @@ public class Settings implements AutoCloseable {
         }
     }
 
+    @Override
     public Boolean getAsBoolean(String setting, Boolean defaultValue) {
         String value = get(setting);
         if (value == null) {
@@ -249,18 +249,22 @@ public class Settings implements AutoCloseable {
         return !("false".equals(value) || "0".equals(value) || "off".equals(value) || "no".equals(value));
     }
 
+    @Override
     public TimeValue getAsTime(String setting, TimeValue defaultValue) {
         return TimeValue.parseTimeValue(get(setting), defaultValue);
     }
 
+    @Override
     public ByteSizeValue getAsBytesSize(String setting, ByteSizeValue defaultValue) {
         return ByteSizeValue.parseBytesSizeValue(get(setting), defaultValue);
     }
 
+    @Override
     public String[] getAsArray(String settingPrefix) {
         return getAsArray(settingPrefix, EMPTY_ARRAY);
     }
 
+    @Override
     public String[] getAsArray(String settingPrefix, String[] defaultArray) {
         List<String> result = new ArrayList<>();
         if (get(settingPrefix) != null) {
@@ -285,7 +289,8 @@ public class Settings implements AutoCloseable {
         return result.toArray(new String[result.size()]);
     }
 
-    public Map<String, Settings> getGroups(String prefix) {
+    @Override
+    public Map<String, org.xbib.content.Settings> getGroups(String prefix) {
         String settingPrefix = prefix;
         if (settingPrefix.charAt(settingPrefix.length() - 1) != '.') {
             settingPrefix = settingPrefix + ".";
@@ -308,16 +313,16 @@ public class Settings implements AutoCloseable {
                 groupSettings.put(value, get(setting));
             }
         }
-        TinyMap.Builder<String, Settings> retVal = TinyMap.builder();
+        TinyMap.Builder<String, org.xbib.content.Settings> retVal = TinyMap.builder();
         for (Map.Entry<String, Map<String, String>> entry : hashMap.entrySet()) {
-            retVal.put(entry.getKey(), new Settings(entry.getValue()));
+            retVal.put(entry.getKey(), new ContentSettings(entry.getValue()));
         }
         return retVal.build();
     }
 
     @Override
     public boolean equals(Object o) {
-        return this == o || !(o == null || getClass() != o.getClass()) && map.equals(((Settings) o).map);
+        return this == o || !(o == null || getClass() != o.getClass()) && map.equals(((ContentSettings) o).map);
     }
 
     @Override
@@ -325,6 +330,13 @@ public class Settings implements AutoCloseable {
         return map.hashCode();
     }
 
+    @Override
+    public void close() throws IOException {
+        if (refresher != null) {
+            refresher.stop();
+        }
+    }
+
     private void processSetting(Map<String, Object> map, String prefix, String setting, String value) {
         int prefixLength = setting.indexOf('.');
         if (prefixLength == -1) {
@@ -396,340 +408,6 @@ public class Settings implements AutoCloseable {
         return map;
     }
 
-    @Override
-    public void close() throws IOException {
-        if (refresher != null) {
-            refresher.stop();
-        }
-    }
-
-    /**
-     *
-     */
-    public static class Builder {
-
-        private final Map<String, String> map;
-
-        private Path path;
-
-        private long initialDelay;
-
-        private long period;
-
-        private TimeUnit timeUnit;
-
-        private Builder() {
-            map = TinyMap.builder();
-        }
-
-        public Map<String, String> map() {
-            return map;
-        }
-
-        public String remove(String key) {
-            return map.remove(key);
-        }
-
-        public String get(String key) {
-            return map.get(key);
-        }
-
-        /**
-         * Sets a setting with the provided setting key and value.
-         *
-         * @param key   The setting key
-         * @param value The setting value
-         * @return The builder
-         */
-        public Builder put(String key, String value) {
-            map.put(key, value);
-            return this;
-        }
-
-        /**
-         * Sets a setting with the provided setting key and class as value.
-         *
-         * @param key   The setting key
-         * @param clazz The setting class value
-         * @return The builder
-         */
-        public Builder put(String key, Class<?> clazz) {
-            map.put(key, clazz.getName());
-            return this;
-        }
-
-        /**
-         * Sets the setting with the provided setting key and the boolean value.
-         *
-         * @param setting The setting key
-         * @param value   The boolean value
-         * @return The builder
-         */
-        public Builder put(String setting, boolean value) {
-            put(setting, String.valueOf(value));
-            return this;
-        }
-
-        /**
-         * Sets the setting with the provided setting key and the int value.
-         *
-         * @param setting The setting key
-         * @param value   The int value
-         * @return The builder
-         */
-        public Builder put(String setting, int value) {
-            put(setting, String.valueOf(value));
-            return this;
-        }
-
-        /**
-         * Sets the setting with the provided setting key and the long value.
-         *
-         * @param setting The setting key
-         * @param value   The long value
-         * @return The builder
-         */
-        public Builder put(String setting, long value) {
-            put(setting, String.valueOf(value));
-            return this;
-        }
-
-        /**
-         * Sets the setting with the provided setting key and the float value.
-         *
-         * @param setting The setting key
-         * @param value   The float value
-         * @return The builder
-         */
-        public Builder put(String setting, float value) {
-            put(setting, String.valueOf(value));
-            return this;
-        }
-
-        /**
-         * Sets the setting with the provided setting key and the double value.
-         *
-         * @param setting The setting key
-         * @param value   The double value
-         * @return The builder
-         */
-        public Builder put(String setting, double value) {
-            put(setting, String.valueOf(value));
-            return this;
-        }
-
-        /**
-         * Sets the setting with the provided setting key and an array of values.
-         *
-         * @param setting The setting key
-         * @param values  The values
-         * @return The builder
-         */
-        public Builder putArray(String setting, String... values) {
-            remove(setting);
-            int counter = 0;
-            while (true) {
-                String value = map.remove(setting + '.' + (counter++));
-                if (value == null) {
-                    break;
-                }
-            }
-            for (int i = 0; i < values.length; i++) {
-                put(setting + '.' + i, values[i]);
-            }
-            return this;
-        }
-
-        /**
-         * Sets the setting with the provided setting key and an array of values.
-         *
-         * @param setting The setting key
-         * @param values  The values
-         * @return The builder
-         */
-        public Builder putArray(String setting, List<String> values) {
-            remove(setting);
-            int counter = 0;
-            while (true) {
-                String value = map.remove(setting + '.' + (counter++));
-                if (value == null) {
-                    break;
-                }
-            }
-            for (int i = 0; i < values.size(); i++) {
-                put(setting + '.' + i, values.get(i));
-            }
-            return this;
-        }
-
-        /**
-         * Sets the setting group.
-         * @param settingPrefix setting prefix
-         * @param groupName group name
-         * @param settings settings
-         * @param values values
-         * @return a builder
-         * @throws SettingsException if setting fails
-         */
-        public Builder put(String settingPrefix, String groupName, String[] settings, String[] values)
-                throws SettingsException {
-            if (settings.length != values.length) {
-                throw new SettingsException("The settings length must match the value length");
-            }
-            for (int i = 0; i < settings.length; i++) {
-                if (values[i] == null) {
-                    continue;
-                }
-                put(settingPrefix + "" + groupName + "." + settings[i], values[i]);
-            }
-            return this;
-        }
-
-        /**
-         * Sets all the provided settings.
-         * @param settings settings
-         * @return builder
-         */
-        public Builder put(Settings settings) {
-            map.putAll(settings.getAsMap());
-            return this;
-        }
-
-        /**
-         * Sets all the provided settings.
-         *
-         * @param settings settings
-         * @return a builder
-         */
-        public Builder put(Map<String, String> settings) {
-            map.putAll(settings);
-            return this;
-        }
-
-        /**
-         * Loads settings from the actual string content that represents them using the
-         * {@link SettingsLoaderService#loaderFromString(String)}.
-         *
-         * @param source source
-         * @return builder
-         */
-        public Builder loadFromString(String source) {
-            SettingsLoaderService settingsLoaderService = new SettingsLoaderService();
-            SettingsLoader settingsLoader = settingsLoaderService.loaderFromString(source);
-            try {
-                Map<String, String> loadedSettings = settingsLoader.load(source);
-                put(loadedSettings);
-            } catch (Exception e) {
-                throw new SettingsException("Failed to load settings from [" + source + "]", e);
-            }
-            return this;
-        }
-
-        /**
-         * Loads settings from an URL.
-         * @param url url
-         * @return builder
-         */
-        public Builder loadFromUrl(URL url) throws SettingsException {
-            try {
-                return loadFromStream(url.toExternalForm(), url.openStream());
-            } catch (IOException e) {
-                throw new SettingsException("Failed to open stream for url [" + url.toExternalForm() + "]", e);
-            }
-        }
-
-        /**
-         * Loads settings from a stream.
-         * @param resourceName resource name
-         * @param inputStream input stream
-         * @return builder
-         */
-        public Builder loadFromStream(String resourceName, InputStream inputStream) throws SettingsException {
-            SettingsLoaderService settingsLoaderService = new SettingsLoaderService();
-            SettingsLoader settingsLoader = settingsLoaderService.loaderFromResource(resourceName);
-            try {
-                Map<String, String> loadedSettings = settingsLoader
-                        .load(copyToString(new InputStreamReader(inputStream, StandardCharsets.UTF_8)));
-                put(loadedSettings);
-            } catch (Exception e) {
-                throw new SettingsException("Failed to load settings from [" + resourceName + "]", e);
-            }
-            return this;
-        }
-
-        /**
-         * Load system properties to this settings.
-         * @return builder
-         */
-        public Builder loadFromSystemProperties() {
-            for (Map.Entry<Object, Object> entry : System.getProperties().entrySet()) {
-                put((String) entry.getKey(), (String) entry.getValue());
-            }
-            return this;
-        }
-
-        /**
-         * Load system environment to this settings.
-         * @return builder
-         */
-        public Builder loadFromSystemEnvironment() {
-            for (Map.Entry<String, String> entry : System.getenv().entrySet()) {
-                put(entry.getKey(), entry.getValue());
-            }
-            return this;
-        }
-        /**
-         * Runs across all the settings set on this builder and replaces {@code ${...}} elements in the
-         * each setting value according to the following logic:
-         *
-         * First, tries to resolve it against a System property ({@link System#getProperty(String)}), next,
-         * tries and resolve it against an environment variable ({@link System#getenv(String)}), next,
-         * tries and resolve it against a date pattern to resolve the current date,
-         * and last, tries and replace it with another setting already set on this builder.
-         * @return builder
-         */
-        public Builder replacePropertyPlaceholders() {
-            return replacePropertyPlaceholders(new PropertyPlaceholder("${", "}", false),
-                    placeholderName -> {
-                        // system property
-                        String value = System.getProperty(placeholderName);
-                        if (value != null) {
-                            return value;
-                        }
-                        // environment
-                        value = System.getenv(placeholderName);
-                        if (value != null) {
-                            return value;
-                        }
-                        // current date
-                        try {
-                            return DateTimeFormatter.ofPattern(placeholderName).format(LocalDate.now());
-                        } catch (IllegalArgumentException | DateTimeException e) {
-                            return map.get(placeholderName);
-                        }
-                    }
-            );
-        }
-
-        public Builder replacePropertyPlaceholders(PropertyPlaceholder propertyPlaceholder,
-                                                   PlaceholderResolver placeholderResolver) {
-            map.replaceAll((k, v) -> propertyPlaceholder.replacePlaceholders(v, placeholderResolver));
-            return this;
-        }
-
-        public Builder setRefresh(Path path, long initialDelay, long period, TimeUnit timeUnit) {
-            this.path = path;
-            this.initialDelay = initialDelay;
-            this.period = period;
-            this.timeUnit = timeUnit;
-            return this;
-        }
-
-        public Settings build() {
-            return new Settings(map, path, initialDelay, period, timeUnit);
-        }
-    }
-
     class DefaultSettingsRefresher implements Runnable {
 
         private final Path path;

content-settings/src/main/java/org/xbib/content/settings/ContentSettingsBuilder.java

@@ -0,0 +1,363 @@
+package org.xbib.content.settings;
+
+import org.xbib.content.PlaceholderResolver;
+import org.xbib.content.PropertyPlaceholder;
+import org.xbib.content.Settings;
+import org.xbib.content.SettingsBuilder;
+import org.xbib.content.SettingsLoader;
+import org.xbib.datastructures.tiny.TinyMap;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.net.URL;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Path;
+import java.time.DateTimeException;
+import java.time.LocalDate;
+import java.time.format.DateTimeFormatter;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.TimeUnit;
+
+/**
+ *
+ */
+public class ContentSettingsBuilder implements SettingsBuilder {
+
+    private final Map<String, String> map;
+
+    private Path path;
+
+    private long initialDelay;
+
+    private long period;
+
+    private TimeUnit timeUnit;
+
+    public ContentSettingsBuilder() {
+        map = TinyMap.builder();
+    }
+
+    public Map<String, String> map() {
+        return map;
+    }
+
+    public String remove(String key) {
+        return map.remove(key);
+    }
+
+    public String get(String key) {
+        return map.get(key);
+    }
+
+    @Override
+    public boolean isEmpty() {
+        return map.isEmpty();
+    }
+
+    /**
+     * Sets a setting with the provided setting key and value.
+     *
+     * @param key   The setting key
+     * @param value The setting value
+     * @return The builder
+     */
+    public ContentSettingsBuilder put(String key, String value) {
+        map.put(key, value);
+        return this;
+    }
+
+    /**
+     * Sets a setting with the provided setting key and class as value.
+     *
+     * @param key   The setting key
+     * @param clazz The setting class value
+     * @return The builder
+     */
+    public ContentSettingsBuilder put(String key, Class<?> clazz) {
+        map.put(key, clazz.getName());
+        return this;
+    }
+
+    /**
+     * Sets the setting with the provided setting key and the boolean value.
+     *
+     * @param setting The setting key
+     * @param value   The boolean value
+     * @return The builder
+     */
+    public ContentSettingsBuilder put(String setting, boolean value) {
+        put(setting, String.valueOf(value));
+        return this;
+    }
+
+    /**
+     * Sets the setting with the provided setting key and the int value.
+     *
+     * @param setting The setting key
+     * @param value   The int value
+     * @return The builder
+     */
+    public ContentSettingsBuilder put(String setting, int value) {
+        put(setting, String.valueOf(value));
+        return this;
+    }
+
+    /**
+     * Sets the setting with the provided setting key and the long value.
+     *
+     * @param setting The setting key
+     * @param value   The long value
+     * @return The builder
+     */
+    public ContentSettingsBuilder put(String setting, long value) {
+        put(setting, String.valueOf(value));
+        return this;
+    }
+
+    /**
+     * Sets the setting with the provided setting key and the float value.
+     *
+     * @param setting The setting key
+     * @param value   The float value
+     * @return The builder
+     */
+    public ContentSettingsBuilder put(String setting, float value) {
+        put(setting, String.valueOf(value));
+        return this;
+    }
+
+    /**
+     * Sets the setting with the provided setting key and the double value.
+     *
+     * @param setting The setting key
+     * @param value   The double value
+     * @return The builder
+     */
+    public ContentSettingsBuilder put(String setting, double value) {
+        put(setting, String.valueOf(value));
+        return this;
+    }
+
+    /**
+     * Sets the setting with the provided setting key and an array of values.
+     *
+     * @param setting The setting key
+     * @param values  The values
+     * @return The builder
+     */
+    public ContentSettingsBuilder putArray(String setting, String... values) {
+        remove(setting);
+        int counter = 0;
+        while (true) {
+            String value = map.remove(setting + '.' + (counter++));
+            if (value == null) {
+                break;
+            }
+        }
+        for (int i = 0; i < values.length; i++) {
+            put(setting + '.' + i, values[i]);
+        }
+        return this;
+    }
+
+    /**
+     * Sets the setting with the provided setting key and an array of values.
+     *
+     * @param setting The setting key
+     * @param values  The values
+     * @return The builder
+     */
+    public ContentSettingsBuilder putArray(String setting, List<String> values) {
+        remove(setting);
+        int counter = 0;
+        while (true) {
+            String value = map.remove(setting + '.' + (counter++));
+            if (value == null) {
+                break;
+            }
+        }
+        for (int i = 0; i < values.size(); i++) {
+            put(setting + '.' + i, values.get(i));
+        }
+        return this;
+    }
+
+    /**
+     * Sets the setting group.
+     *
+     * @param settingPrefix setting prefix
+     * @param groupName     group name
+     * @param settings      settings
+     * @param values        values
+     * @return a builder
+     * @throws SettingsException if setting fails
+     */
+    public ContentSettingsBuilder put(String settingPrefix, String groupName, String[] settings, String[] values)
+            throws SettingsException {
+        if (settings.length != values.length) {
+            throw new SettingsException("The settings length must match the value length");
+        }
+        for (int i = 0; i < settings.length; i++) {
+            if (values[i] == null) {
+                continue;
+            }
+            put(settingPrefix + "" + groupName + "." + settings[i], values[i]);
+        }
+        return this;
+    }
+
+    /**
+     * Sets all the provided settings.
+     *
+     * @param settings settings
+     * @return builder
+     */
+    public ContentSettingsBuilder put(Settings settings) {
+        map.putAll(settings.getAsMap());
+        return this;
+    }
+
+    /**
+     * Sets all the provided settings.
+     *
+     * @param settings settings
+     * @return a builder
+     */
+    public ContentSettingsBuilder put(Map<String, String> settings) {
+        map.putAll(settings);
+        return this;
+    }
+
+    /**
+     * Loads settings from the actual string content that represents them using the
+     * {@link SettingsLoaderService#loaderFromString(String)}.
+     *
+     * @param source source
+     * @return builder
+     */
+    public ContentSettingsBuilder loadFromString(String source) {
+        SettingsLoaderService settingsLoaderService = new SettingsLoaderService();
+        SettingsLoader settingsLoader = settingsLoaderService.loaderFromString(source);
+        try {
+            Map<String, String> loadedSettings = settingsLoader.load(source);
+            put(loadedSettings);
+        } catch (Exception e) {
+            throw new SettingsException("Failed to load settings from [" + source + "]", e);
+        }
+        return this;
+    }
+
+    /**
+     * Loads settings from an URL.
+     *
+     * @param url url
+     * @return builder
+     */
+    public ContentSettingsBuilder loadFromUrl(URL url) throws SettingsException {
+        try {
+            return loadFromResource(url.toExternalForm(), url.openStream());
+        } catch (IOException e) {
+            throw new SettingsException("Failed to open stream for url [" + url.toExternalForm() + "]", e);
+        }
+    }
+
+    /**
+     * Loads settings from a stream.
+     *
+     * @param resourceName resource name
+     * @param inputStream  input stream
+     * @return builder
+     */
+    @Override
+    public ContentSettingsBuilder loadFromResource(String resourceName, InputStream inputStream) throws SettingsException {
+        SettingsLoaderService settingsLoaderService = new SettingsLoaderService();
+        SettingsLoader settingsLoader = settingsLoaderService.loaderFromResource(resourceName);
+        try {
+            Map<String, String> loadedSettings = settingsLoader
+                    .load(ContentSettings.copyToString(new InputStreamReader(inputStream, StandardCharsets.UTF_8)));
+            put(loadedSettings);
+        } catch (Exception e) {
+            throw new SettingsException("Failed to load settings from [" + resourceName + "]", e);
+        }
+        return this;
+    }
+
+    /**
+     * Load system properties to this settings.
+     *
+     * @return builder
+     */
+    @Override
+    public ContentSettingsBuilder loadFromSystemProperties() {
+        for (Map.Entry<Object, Object> entry : System.getProperties().entrySet()) {
+            put((String) entry.getKey(), (String) entry.getValue());
+        }
+        return this;
+    }
+
+    /**
+     * Load system environment to this settings.
+     *
+     * @return builder
+     */
+    public ContentSettingsBuilder loadFromSystemEnvironment() {
+        for (Map.Entry<String, String> entry : System.getenv().entrySet()) {
+            put(entry.getKey(), entry.getValue());
+        }
+        return this;
+    }
+
+    /**
+     * Runs across all the settings set on this builder and replaces {@code ${...}} elements in the
+     * each setting value according to the following logic:
+     * <p>
+     * First, tries to resolve it against a System property ({@link System#getProperty(String)}), next,
+     * tries and resolve it against an environment variable ({@link System#getenv(String)}), next,
+     * tries and resolve it against a date pattern to resolve the current date,
+     * and last, tries and replace it with another setting already set on this builder.
+     *
+     * @return builder
+     */
+    public ContentSettingsBuilder replacePropertyPlaceholders() {
+        return replacePropertyPlaceholders(new PropertyPlaceholder("${", "}", false),
+                placeholderName -> {
+                    // system property
+                    String value = System.getProperty(placeholderName);
+                    if (value != null) {
+                        return value;
+                    }
+                    // environment
+                    value = System.getenv(placeholderName);
+                    if (value != null) {
+                        return value;
+                    }
+                    // current date
+                    try {
+                        return DateTimeFormatter.ofPattern(placeholderName).format(LocalDate.now());
+                    } catch (IllegalArgumentException | DateTimeException e) {
+                        return map.get(placeholderName);
+                    }
+                }
+        );
+    }
+
+    public ContentSettingsBuilder replacePropertyPlaceholders(PropertyPlaceholder propertyPlaceholder,
+                                                              PlaceholderResolver placeholderResolver) {
+        map.replaceAll((k, v) -> propertyPlaceholder.replacePlaceholders(v, placeholderResolver));
+        return this;
+    }
+
+    public ContentSettingsBuilder setRefresh(Path path, long initialDelay, long period, TimeUnit timeUnit) {
+        this.path = path;
+        this.initialDelay = initialDelay;
+        this.period = period;
+        this.timeUnit = timeUnit;
+        return this;
+    }
+
+    public ContentSettings build() {
+        return new ContentSettings(map, path, initialDelay, period, timeUnit);
+    }
+}

content-settings/src/main/java/org/xbib/content/settings/PropertiesSettingsLoader.java

@@ -1,4 +1,4 @@
-package org.xbib.content.properties;
+package org.xbib.content.settings;
 
 import org.xbib.content.io.BytesReference;
 import org.xbib.content.SettingsLoader;
@@ -39,17 +39,6 @@ public class PropertiesSettingsLoader implements SettingsLoader {
         }
     }
 
-    public Map<String, String> load(BytesReference ref) throws IOException {
-        Properties props = new Properties();
-        try (Reader reader = new InputStreamReader(ref.streamInput(), StandardCharsets.UTF_8)) {
-            props.load(reader);
-            Map<String, String> result = new HashMap<>();
-            for (Map.Entry<Object, Object> entry : props.entrySet()) {
-                result.put((String) entry.getKey(), (String) entry.getValue());
-            }
-            return result;
-        }
-    }
 
     @Override
     public Map<String, String> load(Map<String, Object> source) throws IOException {
@@ -66,4 +55,16 @@ public class PropertiesSettingsLoader implements SettingsLoader {
     public boolean canLoad(String source) {
         return true;
     }
+
+    public Map<String, String> load(BytesReference ref) throws IOException {
+        Properties props = new Properties();
+        try (Reader reader = new InputStreamReader(ref.streamInput(), StandardCharsets.UTF_8)) {
+            props.load(reader);
+            Map<String, String> result = new HashMap<>();
+            for (Map.Entry<Object, Object> entry : props.entrySet()) {
+                result.put((String) entry.getKey(), (String) entry.getValue());
+            }
+            return result;
+        }
+    }
 }

content-settings/src/main/java/org/xbib/content/settings/PropertyPlaceholder.java

@@ -1,120 +0,0 @@
-package org.xbib.content.settings;
-
-import java.util.HashSet;
-import java.util.Set;
-
-/**
- *
- */
-public class PropertyPlaceholder {
-
-    private final String placeholderPrefix;
-
-    private final String placeholderSuffix;
-
-    private final boolean ignoreUnresolvablePlaceholders;
-
-    /**
-     * Creates a new <code>PropertyPlaceholderHelper</code> that uses the supplied prefix and suffix.
-     *
-     * @param placeholderPrefix              the prefix that denotes the start of a placeholder.
-     * @param placeholderSuffix              the suffix that denotes the end of a placeholder.
-     * @param ignoreUnresolvablePlaceholders indicates whether unresolvable placeholders should be ignored
-     *                                       (<code>true</code>) or cause an exception (<code>false</code>).
-     */
-    public PropertyPlaceholder(String placeholderPrefix, String placeholderSuffix,
-                               boolean ignoreUnresolvablePlaceholders) {
-        this.placeholderPrefix = placeholderPrefix;
-        this.placeholderSuffix = placeholderSuffix;
-        this.ignoreUnresolvablePlaceholders = ignoreUnresolvablePlaceholders;
-    }
-
-
-    /**
-     * Replaces all placeholders of format <code>${name}</code> with the value returned from the supplied {@link
-     * PlaceholderResolver}.
-     *
-     * @param value               the value containing the placeholders to be replaced.
-     * @param placeholderResolver the <code>PlaceholderResolver</code> to use for replacement.
-     * @return the supplied value with placeholders replaced inline.
-     */
-    public String replacePlaceholders(String value, PlaceholderResolver placeholderResolver) {
-        return parseStringValue(value, placeholderResolver, new HashSet<String>());
-    }
-
-    protected String parseStringValue(String strVal, PlaceholderResolver placeholderResolver,
-                                      Set<String> visitedPlaceholders) {
-        StringBuilder buf = new StringBuilder(strVal);
-        int startIndex = strVal.indexOf(this.placeholderPrefix);
-        while (startIndex != -1) {
-            int endIndex = findPlaceholderEndIndex(buf, startIndex);
-            if (endIndex != -1) {
-                String placeholder = buf.substring(startIndex + this.placeholderPrefix.length(), endIndex);
-                if (!visitedPlaceholders.add(placeholder)) {
-                    throw new IllegalArgumentException(
-                            "Circular placeholder reference '" + placeholder + "' in property definitions");
-                }
-                // Recursive invocation, parsing placeholders contained in the placeholder key.
-                placeholder = parseStringValue(placeholder, placeholderResolver, visitedPlaceholders);
-                // Now obtain the value for the fully resolved key...
-                int defaultValueIdx = placeholder.indexOf(':');
-                String defaultValue = null;
-                if (defaultValueIdx != -1) {
-                    defaultValue = placeholder.substring(defaultValueIdx + 1);
-                    placeholder = placeholder.substring(0, defaultValueIdx);
-                }
-                String propVal = placeholderResolver.resolvePlaceholder(placeholder);
-                if (propVal == null) {
-                    propVal = defaultValue;
-                }
-                if (propVal != null) {
-                    // Recursive invocation, parsing placeholders contained in the
-                    // previously resolved placeholder value.
-                    propVal = parseStringValue(propVal, placeholderResolver, visitedPlaceholders);
-                    buf.replace(startIndex, endIndex + this.placeholderSuffix.length(), propVal);
-                    startIndex = buf.indexOf(this.placeholderPrefix, startIndex + propVal.length());
-                } else if (this.ignoreUnresolvablePlaceholders) {
-                    // Proceed with unprocessed value.
-                    startIndex = buf.indexOf(this.placeholderPrefix, endIndex + this.placeholderSuffix.length());
-                } else {
-                    throw new IllegalArgumentException("Could not resolve placeholder '" + placeholder + "'");
-                }
-                visitedPlaceholders.remove(placeholder);
-            } else {
-                startIndex = -1;
-            }
-        }
-        return buf.toString();
-    }
-
-    private int findPlaceholderEndIndex(CharSequence buf, int startIndex) {
-        int index = startIndex + this.placeholderPrefix.length();
-        int withinNestedPlaceholder = 0;
-        while (index < buf.length()) {
-            if (substringMatch(buf, index, this.placeholderSuffix)) {
-                if (withinNestedPlaceholder > 0) {
-                    withinNestedPlaceholder--;
-                    index = index + this.placeholderPrefix.length() - 1;
-                } else {
-                    return index;
-                }
-            } else if (substringMatch(buf, index, this.placeholderPrefix)) {
-                withinNestedPlaceholder++;
-                index = index + this.placeholderPrefix.length();
-            } else {
-                index++;
-            }
-        }
-        return -1;
-    }
-
-    private boolean substringMatch(CharSequence str, int index, CharSequence substring) {
-        for (int j = 0; j < substring.length(); j++) {
-            int i = index + j;
-            if (i >= str.length() || str.charAt(i) != substring.charAt(j)) {
-                return false;
-            }
-        }
-        return true;
-    }
-}

content-settings/src/main/java/org/xbib/content/settings/SettingsException.java

@@ -1,17 +0,0 @@
-package org.xbib.content.settings;
-
-/**
- * A generic failure to handle settings.
- */
-public class SettingsException extends RuntimeException {
-
-    private static final long serialVersionUID = -1833327708622505101L;
-
-    public SettingsException(String message) {
-        super(message);
-    }
-
-    public SettingsException(String message, Throwable cause) {
-        super(message, cause);
-    }
-}

content-settings/src/main/java/org/xbib/content/settings/SettingsLoaderService.java

@@ -1,57 +0,0 @@
-package org.xbib.content.settings;
-
-import org.xbib.content.SettingsLoader;
-
-import java.util.HashMap;
-import java.util.Map;
-import java.util.ServiceLoader;
-import java.util.Set;
-
-/**
- * A settings loader service for loading {@link SettingsLoader} implementations.
- */
-public final class SettingsLoaderService {
-
-    private final Map<Set<String>, SettingsLoader> settingsLoaderMap;
-
-    public SettingsLoaderService() {
-        this.settingsLoaderMap = new HashMap<>();
-        ServiceLoader<SettingsLoader> serviceLoader = ServiceLoader.load(SettingsLoader.class);
-        for (SettingsLoader settingsLoader : serviceLoader) {
-            if (!settingsLoaderMap.containsKey(settingsLoader.suffixes())) {
-                settingsLoaderMap.put(settingsLoader.suffixes(), settingsLoader);
-            }
-        }
-    }
-
-    /**
-     * Returns a {@link SettingsLoader} based on the resource name.
-     * @param resourceName the resource
-     * @return the settings loader
-     */
-    public SettingsLoader loaderFromResource(String resourceName) {
-        for (Map.Entry<Set<String>, SettingsLoader> entry : settingsLoaderMap.entrySet()) {
-            Set<String> suffixes = entry.getKey();
-            for (String suffix : suffixes) {
-                if (resourceName.endsWith("." + suffix)) {
-                    return entry.getValue();
-                }
-            }
-        }
-        throw new UnsupportedOperationException();
-    }
-
-    /**
-     * Returns a {@link SettingsLoader} based on the actual source.
-     * @param source the source
-     * @return the settings loader
-     */
-    public SettingsLoader loaderFromString(String source) {
-        for (SettingsLoader loader : settingsLoaderMap.values()) {
-            if (loader.canLoad(source)) {
-                return loader;
-            }
-        }
-        throw new UnsupportedOperationException();
-    }
-}

content-settings/src/main/resources/META-INF/services/org.xbib.content.SettingsBuilder

@@ -0,0 +1 @@
+org.xbib.content.settings.ContentSettingsBuilder

content-settings/src/main/resources/META-INF/services/org.xbib.content.SettingsLoader

@@ -0,0 +1 @@
+org.xbib.content.settings.PropertiesSettingsLoader

content-settings/src/test/java/org/xbib/content/settings/test/SettingsTest.java

@@ -10,7 +10,7 @@ import org.xbib.content.io.BytesArray;
 import org.xbib.content.io.BytesReference;
 import org.xbib.content.json.JsonSettingsLoader;
 import org.xbib.content.json.JsonXContent;
-import org.xbib.content.settings.Settings;
+import org.xbib.content.Settings;
 import java.io.ByteArrayInputStream;
 import java.io.IOException;
 import java.io.StringReader;
@@ -31,8 +31,8 @@ public class SettingsTest {
 
     @Test
     public void testEmpty() {
-        Settings settings = Settings.EMPTY_SETTINGS;
+        Settings settings = Settings.emptySettings();
-        assertTrue(settings.getAsMap().isEmpty());
+        assertTrue(settings.isEmpty());
     }
 
     @Test
@@ -134,7 +134,7 @@ public class SettingsTest {
     @Test
     public void testPropertiesLoader() {
         Settings settings = Settings.settingsBuilder()
-                .loadFromStream(".properties", new ByteArrayInputStream("a.b=c".getBytes(StandardCharsets.UTF_8)))
+                .loadFromResource(".properties", new ByteArrayInputStream("a.b=c".getBytes(StandardCharsets.UTF_8)))
                 .build();
         assertEquals("{a.b=c}", settings.getAsMap().toString());
     }

content-yaml/src/test/java/YamlTest.java

@@ -1,2 +0,0 @@
-public class YamlTest {
-}

gradle/quality/pmd.gradle

@@ -5,5 +5,5 @@ pmd {
     consoleOutput = false
     toolVersion = "6.24.0"
     rulePriority = 5
-    ruleSets = ["category/java/errorprone.xml", "category/java/bestpractices.xml"]
+    ruleSets = ["category/java/bestpractices.xml"]
 }