update to Java 17, fix field list for MarcContentHandler

build.gradle

@@ -5,7 +5,7 @@ plugins {
 }
 
 wrapper {
-    gradleVersion = "${rootProject.property('gradle.wrapper.version')}"
+    gradleVersion = libs.versions.gradle.get()
     distributionType = Wrapper.DistributionType.ALL
 }
 
@@ -27,17 +27,17 @@ ext {
 apply plugin: 'java-library'
 
 dependencies {
-    testImplementation "org.xbib:bibliographic-character-sets:${project.property('xbib-bibliographic-character-sets.version')}"
-    testImplementation "org.xbib:content-json:${project.property('xbib-content.version')}"
-    testImplementation "xalan:xalan:${project.property('xalan.version')}"
-    testImplementation "org.xmlunit:xmlunit-matchers:${project.property('xmlunit-matchers.version')}"
-    testImplementation("com.github.stefanbirkner:system-rules:${project.property('system-rules.version')}") {
+    testImplementation libs.charactersets
+    testImplementation libs.json
+    testImplementation libs.xalan
+    testImplementation libs.xmlunit
+    testImplementation (libs.system.rules) {
         exclude module: 'junit'
     }
-    testImplementation("org.mockito:mockito-core:${project.property('mockito.version')}") {
+    testImplementation(libs.mockito) {
         exclude group: 'org.hamcrest'
     }
-    testImplementation "org.marc4j:marc4j:${project.property('marc4j.version')}"
+    testImplementation libs.marc4j
 }
 
 apply from: rootProject.file('gradle/ide/idea.gradle')

gradle/test/junit5.gradle

@@ -1,12 +1,9 @@
 
-def junitVersion = project.hasProperty('junit.version')?project.property('junit.version'):'5.8.2'
-def hamcrestVersion = project.hasProperty('hamcrest.version')?project.property('hamcrest.version'):'2.2'
-
 dependencies {
-    testImplementation "org.junit.jupiter:junit-jupiter-api:${junitVersion}"
-    testImplementation "org.junit.jupiter:junit-jupiter-params:${junitVersion}"
-    testImplementation "org.hamcrest:hamcrest-library:${hamcrestVersion}"
-    testRuntimeOnly "org.junit.jupiter:junit-jupiter-engine:${junitVersion}"
+    testImplementation libs.junit.jupiter.api
+    testImplementation libs.junit.jupiter.params
+    testImplementation libs.hamcrest
+    testRuntimeOnly libs.junit.jupiter.engine
 }
 
 test {
@@ -24,17 +21,6 @@ test {
                     "${result.skippedTestCount} skipped"
         }
     }
-    jvmArgs '-Xmx2048m',
-            '--add-exports=java.base/jdk.internal.misc=ALL-UNNAMED',
-            '--add-exports=java.base/jdk.internal.ref=ALL-UNNAMED',
-            '--add-exports=java.base/sun.nio.ch=ALL-UNNAMED',
-            '--add-exports=jdk.unsupported/sun.misc=ALL-UNNAMED',
-            '--add-exports=jdk.compiler/com.sun.tools.javac.file=ALL-UNNAMED',
-            '--add-opens=jdk.compiler/com.sun.tools.javac=ALL-UNNAMED',
-            '--add-opens=java.base/java.lang=ALL-UNNAMED',
-            '--add-opens=java.base/java.lang.reflect=ALL-UNNAMED',
-            '--add-opens=java.base/java.io=ALL-UNNAMED',
-            '--add-opens=java.base/java.nio=ALL-UNNAMED',
-            '--add-opens=java.base/java.util=ALL-UNNAMED'
+    jvmArgs '-Xmx2048m'
     systemProperty 'java.util.logging.config.file', 'src/test/resources/logging.properties'
 }

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.3.2-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.5.1-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

gradlew

@@ -205,6 +205,12 @@ set -- \
         org.gradle.wrapper.GradleWrapperMain \
         "$@"
 
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
 # Use "xargs" to parse quoted args.
 #
 # With -n1 it outputs one arg per line, with the quotes and backslashes removed.

gradlew.bat

@@ -14,7 +14,7 @@
 @rem limitations under the License.
 @rem
 
-@if "%DEBUG%" == "" @echo off
+@if "%DEBUG%"=="" @echo off
 @rem ##########################################################################
 @rem
 @rem  Gradle startup script for Windows
@@ -25,7 +25,7 @@
 if "%OS%"=="Windows_NT" setlocal
 
 set DIRNAME=%~dp0
-if "%DIRNAME%" == "" set DIRNAME=.
+if "%DIRNAME%"=="" set DIRNAME=.
 set APP_BASE_NAME=%~n0
 set APP_HOME=%DIRNAME%
 
@@ -40,7 +40,7 @@ if defined JAVA_HOME goto findJavaFromJavaHome
 
 set JAVA_EXE=java.exe
 %JAVA_EXE% -version >NUL 2>&1
-if "%ERRORLEVEL%" == "0" goto execute
+if %ERRORLEVEL% equ 0 goto execute
 
 echo.
 echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
@@ -75,13 +75,15 @@ set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
 
 :end
 @rem End local scope for the variables with windows NT shell
-if "%ERRORLEVEL%"=="0" goto mainEnd
+if %ERRORLEVEL% equ 0 goto mainEnd
 
 :fail
 rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
 rem the _cmd.exe /c_ return code!
-if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
-exit /b 1
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
 
 :mainEnd
 if "%OS%"=="Windows_NT" endlocal

settings.gradle

@@ -0,0 +1,20 @@
+dependencyResolutionManagement {
+    versionCatalogs {
+        libs {
+            version('gradle', '7.5.1')
+            version('groovy', '3.0.10')
+            version('junit', '5.9.1')
+            library('junit-jupiter-api', 'org.junit.jupiter', 'junit-jupiter-api').versionRef('junit')
+            library('junit-jupiter-params', 'org.junit.jupiter', 'junit-jupiter-params').versionRef('junit')
+            library('junit-jupiter-engine', 'org.junit.jupiter', 'junit-jupiter-engine').versionRef('junit')
+            library('hamcrest', 'org.hamcrest', 'hamcrest-library').version('2.2')
+            library('charactersets', 'org.xbib', 'bibliographic-character-sets').version('2.0.0')
+            library('json', 'org.xbib', 'content-json').version('4.0.0')
+            library('xalan', 'xalan', 'xalan').version('2.7.2')
+            library('xmlunit', 'org.xmlunit', 'xmlunit-matchers').version('2.8.4')
+            library('system-rules', 'com.github.stefanbirkner', 'system-rules').version('1.19.0')
+            library('mockito', 'org.mockito', 'mockito-core').version('3.3.3')
+            library('marc4j', 'org.marc4j', 'marc4j').version('2.9.2')
+        }
+    }
+}

src/main/java/org/xbib/marc/MarcFieldAdapter.java

@@ -20,6 +20,10 @@ package org.xbib.marc;
  * A MARC listener with empty methods. Useful for extending.
  */
 public class MarcFieldAdapter implements MarcListener {
+
+    public MarcFieldAdapter() {
+    }
+
     @Override
     public void beginCollection() {
         // empty by design

src/main/java/org/xbib/marc/dialects/pica/PicaXMLContentHandler.java

@@ -16,14 +16,13 @@
  */
 package org.xbib.marc.dialects.pica;
 
+import java.util.HashSet;
 import org.xbib.marc.MarcField;
 import org.xbib.marc.label.RecordLabel;
 import org.xbib.marc.xml.MarcContentHandler;
 import org.xml.sax.Attributes;
 import org.xml.sax.SAXException;
 
-import java.util.Arrays;
-import java.util.HashSet;
 import java.util.Set;
 
 /**
@@ -32,8 +31,12 @@ import java.util.Set;
  */
 public class PicaXMLContentHandler extends MarcContentHandler implements PicaConstants {
 
-    private Set<String> validNamespaces =
-            new HashSet<>(Arrays.asList(PICAXML_NAMESPACE, SRW_PICAXML_NAMESPACE));
+    private final Set<String> validNamespaces;
+
+    public PicaXMLContentHandler() {
+        this.validNamespaces = new HashSet<>();
+        this.validNamespaces.addAll(Set.of(PICAXML_NAMESPACE, SRW_PICAXML_NAMESPACE));
+    }
 
     @Override
     protected String getDefaultFormat() {

src/main/java/org/xbib/marc/json/JsonDefaultHandler.java

@@ -16,13 +16,13 @@
  */
 package org.xbib.marc.json;
 
-/**
- *
- */
 public class JsonDefaultHandler implements JsonHandler<JsonArray, JsonObject> {
 
     protected JsonValue value;
 
+    public JsonDefaultHandler() {
+    }
+
     public JsonValue getValue() {
         return value;
     }

src/main/java/org/xbib/marc/json/JsonValue.java

@@ -51,6 +51,9 @@ import java.io.StringWriter;
  */
 public abstract class JsonValue {
 
+    public JsonValue() {
+    }
+
     /**
      * Detects whether this value represents a JSON object. If this is the case, this value is an
      * instance of {@link JsonObject}.

src/main/java/org/xbib/marc/tools/MarcTool.java

@@ -39,13 +39,23 @@ public class MarcTool {
 
     private static final Logger logger = Logger.getLogger(MarcTool.class.getName());
 
-    private String mode = null;
-    private String input = null;
-    private String output = null;
-    private String charset = "UTF-8";
-    private String schema = null;
-    private String stylesheet = null;
-    private String result = null;
+    private String mode;
+
+    private String input;
+
+    private String output;
+
+    private String charset;
+
+    private String schema;
+
+    private String stylesheet;
+
+    private String result;
+
+    public MarcTool() {
+        this.charset = "UTF-8";
+    }
 
     public static void main(String[] args) {
         MarcTool marcTool = new MarcTool();

src/main/java/org/xbib/marc/transformer/field/MarcFieldTransformers.java

@@ -21,11 +21,11 @@ import org.xbib.marc.MarcField;
 import java.util.LinkedList;
 import java.util.List;
 
-/**
- */
+@SuppressWarnings("serial")
 public class MarcFieldTransformers extends LinkedList<MarcFieldTransformer> {
 
-    private static final long serialVersionUID = 2704484673464559115L;
+    public MarcFieldTransformers() {
+    }
 
     public List<MarcField> transform(List<MarcField> marcFields) {
         LinkedList<MarcField> list = new LinkedList<>();

src/main/java/org/xbib/marc/transformer/value/MarcValueTransformers.java

@@ -21,15 +21,18 @@ import org.xbib.marc.MarcField;
 import java.util.HashMap;
 import java.util.Map;
 
-/**
- */
 public class MarcValueTransformers {
 
     private static final String DEFAULT = "_default";
 
-    private final Map<String, MarcValueTransformer> marcValueTransformerMap = new HashMap<>();
+    private final Map<String, MarcValueTransformer> marcValueTransformerMap;
 
-    private final Map<String, String> subfieldMap = new HashMap<>();
+    private final Map<String, String> subfieldMap;
+
+    public MarcValueTransformers() {
+        marcValueTransformerMap = new HashMap<>();
+        subfieldMap = new HashMap<>();
+    }
 
     public MarcValueTransformers setMarcValueTransformer(MarcValueTransformer transformer) {
         this.marcValueTransformerMap.put(DEFAULT, transformer);

src/main/java/org/xbib/marc/transformer/value/Xml10MarcValueCleaner.java

@@ -16,9 +16,11 @@
  */
 package org.xbib.marc.transformer.value;
 
-/**
- */
 public class Xml10MarcValueCleaner implements MarcValueTransformer {
+
+    public Xml10MarcValueCleaner() {
+    }
+
     @Override
     public String transform(String string) {
         StringBuilder sb = new StringBuilder();

src/main/java/org/xbib/marc/xml/MarcContentHandler.java

@@ -16,6 +16,7 @@
  */
 package org.xbib.marc.xml;
 
+import java.util.HashSet;
 import org.xbib.marc.MarcField;
 import org.xbib.marc.MarcListener;
 import org.xbib.marc.MarcRecord;
@@ -35,10 +36,8 @@ import org.xml.sax.SAXException;
 import org.xml.sax.SAXParseException;
 
 import java.io.IOException;
-import java.util.Arrays;
 import java.util.Deque;
 import java.util.HashMap;
-import java.util.HashSet;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Map;
@@ -57,13 +56,13 @@ public class MarcContentHandler
 
     private static final Logger logger = Logger.getLogger(MarcContentHandler.class.getName());
 
-    protected final AtomicInteger recordCounter = new AtomicInteger();
+    protected final AtomicInteger recordCounter;
 
-    protected Deque<MarcField.Builder> stack = new LinkedList<>();
+    protected Deque<MarcField.Builder> stack;
 
-    protected Map<String, MarcListener> listeners = new HashMap<>();
+    protected Map<String, MarcListener> listeners;
 
-    protected StringBuilder content = new StringBuilder();
+    protected StringBuilder content;
 
     protected MarcListener marcListener;
 
@@ -77,16 +76,25 @@ public class MarcContentHandler
 
     protected MarcValueTransformers marcValueTransformers;
 
-    protected boolean trim = false;
+    protected boolean trim;
 
     private MarcFieldTransformers marcFieldTransformers;
 
-    private boolean isCollection = false;
+    private boolean isCollection;
 
-    private final List<MarcField> marcFieldList = new LinkedList<>();
+    private List<MarcField> marcFieldList;
 
-    private final Set<String> validNamespaces =
-            new HashSet<>(Arrays.asList(MARCXCHANGE_V1_NS_URI, MARCXCHANGE_V2_NS_URI, MARC21_SCHEMA_URI));
+    private final Set<String> validNamespaces;
+
+    public MarcContentHandler() {
+        this.recordCounter = new AtomicInteger();
+        this.stack = new LinkedList<>();
+        this.listeners = new HashMap<>();
+        this.content = new StringBuilder();
+        this.marcFieldList = new LinkedList<>();
+        this.validNamespaces = new HashSet<>();
+        this.validNamespaces.addAll(Set.of(MARCXCHANGE_V1_NS_URI, MARCXCHANGE_V2_NS_URI, MARC21_SCHEMA_URI));
+    }
 
     protected String getDefaultFormat() {
         return MARC21_FORMAT;
@@ -249,7 +257,7 @@ public class MarcContentHandler
             if (marcFieldTransformers != null) {
                 marcFieldTransformers.reset();
             }
-            marcFieldList.clear();
+            marcFieldList = new LinkedList<>();
         }
     }
 

src/main/java/org/xbib/marc/xml/MarcXchangeEventConsumer.java

@@ -16,16 +16,15 @@
  */
 package org.xbib.marc.xml;
 
+import java.util.HashSet;
 import org.xbib.marc.MarcField;
 import org.xbib.marc.MarcListener;
 import org.xbib.marc.MarcXchangeConstants;
 import org.xbib.marc.label.RecordLabel;
 import org.xbib.marc.transformer.value.MarcValueTransformers;
 
-import java.util.Arrays;
 import java.util.Deque;
 import java.util.HashMap;
-import java.util.HashSet;
 import java.util.Iterator;
 import java.util.LinkedList;
 import java.util.Map;
@@ -45,22 +44,31 @@ import javax.xml.stream.util.XMLEventConsumer;
  */
 public class MarcXchangeEventConsumer implements XMLEventConsumer, MarcXchangeConstants, MarcListener {
 
-    private Deque<MarcField.Builder> stack = new LinkedList<>();
+    private final Deque<MarcField.Builder> stack;
 
-    private Map<String, MarcListener> listeners = new HashMap<>();
+    private final Map<String, MarcListener> listeners;
 
     private MarcValueTransformers marcValueTransformers;
 
     private MarcListener listener;
 
-    private StringBuilder content = new StringBuilder();
+    private final StringBuilder content;
 
-    private String format = MARC21_FORMAT;
+    private String format;
 
-    private String type = BIBLIOGRAPHIC_TYPE;
+    private String type;
 
-    private Set<String> validNamespaces =
-            new HashSet<>(Arrays.asList(MARCXCHANGE_V1_NS_URI, MARCXCHANGE_V2_NS_URI, MARC21_SCHEMA_URI));
+    private final Set<String> validNamespaces;
+
+    public MarcXchangeEventConsumer() {
+        this.stack = new LinkedList<>();
+        this.listeners = new HashMap<>();
+        this.content = new StringBuilder();
+        this.format = MARC21_FORMAT;
+        this.type = BIBLIOGRAPHIC_TYPE;
+        this.validNamespaces = new HashSet<>();
+        this.validNamespaces.addAll(Set.of(MARCXCHANGE_V1_NS_URI, MARCXCHANGE_V2_NS_URI, MARC21_SCHEMA_URI));
+    }
 
     public MarcXchangeEventConsumer setMarcListener(String type, MarcListener listener) {
         this.listeners.put(type, listener);

src/test/java/org/xbib/marc/tools/ExpectedSystemExit.java

@@ -25,7 +25,7 @@ import static org.junit.jupiter.api.Assertions.fail;
 
 /**
  * This class is original inspired from project {@code system-rules},
- * rewrite it to JUnit5. It is a JUnit Jupiter extension that allows
+ * rewritten to JUnit5. It is a JUnit Jupiter extension that allows
  * in-test specification of expected {@code System.exit(...)} calls.
  */
 @Target({TYPE, METHOD})