add null context for removing index from search clause

cql-common/src/main/java/org/xbib/cql/Index.java

@@ -16,11 +16,14 @@ public class Index extends AbstractNode {
     }
 
     public Index(String name) {
+        this.context = "";
         this.name = name;
-        int pos = name.indexOf('.');
-        if (pos > 0) {
-            this.context = name.substring(0, pos);
-            this.name = name.substring(pos + 1);
+        if (name != null) {
+            int pos = name.indexOf('.');
+            if (pos > 0) {
+                this.context = name.substring(0, pos);
+                this.name = name.substring(pos + 1);
+            }
         }
     }
 
@@ -54,7 +57,6 @@ public class Index extends AbstractNode {
 
     @Override
     public String toString() {
-        return context != null ? context + "." + name : name;
+        return context != null && !context.isEmpty() ? context + "." + name : name;
     }
-
 }

cql-common/src/main/java/org/xbib/cql/SearchClause.java

@@ -53,10 +53,10 @@ public class SearchClause extends AbstractNode {
     public String toString() {
         return query != null && query.toString().length() > 0 ? "(" + query + ")"
                 : query != null ? ""
+                : index != null && index.getContext() == null && index.getName() == null && term != null ? term.toString()
                 : index != null && !CQLQueryModel.isVisible(index.getContext()) ? ""
                 : index != null ? index + " " + relation + " " + term
                 : term != null ? term.toString()
                 : "";
     }
-
 }

cql-common/src/main/java/org/xbib/cql/model/CQLQueryModel.java

@@ -165,15 +165,16 @@ public final class CQLQueryModel {
     }
 
     /**
-     * Get query  of a given context.
+     * Get query of a given context.
      *
      * @param context the context
      * @return true if visible, false if not
      */
     public static boolean isVisible(String context) {
-        return !isFacetContext(context)
-                && !isFilterContext(context)
-                && !isOptionContext(context);
+        return context != null &&
+                !isFacetContext(context) &&
+                !isFilterContext(context) &&
+                !isOptionContext(context);
     }
 
     /**

cql-common/src/test/java/org/xbib/cql/QueryTest.java

@@ -6,6 +6,8 @@ import java.io.IOException;
 import java.io.InputStreamReader;
 import java.io.LineNumberReader;
 import java.nio.charset.StandardCharsets;
+import java.util.logging.Level;
+import java.util.logging.Logger;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 
@@ -14,6 +16,8 @@ import static org.junit.jupiter.api.Assertions.assertEquals;
  */
 class QueryTest {
 
+    private static final Logger logger = Logger.getLogger(QueryTest.class.getName());
+
     @Test
     void testValidQueries() throws IOException {
         test("queries.txt");
@@ -37,14 +41,15 @@ class QueryTest {
                     }
                     ok++;
                 } catch (Exception e) {
+                    logger.log(Level.WARNING, e.getMessage());
                     errors++;
                 }
                 count++;
             }
         }
         lr.close();
-        assertEquals(errors, 0);
-        assertEquals(ok, count);
+        assertEquals(0, errors);
+        assertEquals(count, ok);
     }
 
     private void validate(String line) throws Exception {

cql-elasticsearch/src/main/java/org/xbib/cql/elasticsearch/ElasticsearchQueryGenerator.java

@@ -393,7 +393,7 @@ public class ElasticsearchQueryGenerator implements Visitor {
     @Override
     public void visit(Index node) {
         String context = node.getContext();
-        String name = context != null ? context + "." + node.getName() : node.getName();
+        String name = context != null && !context.isEmpty() ? context + "." + node.getName() : node.getName();
         Name esname = new Name(name, model.getVisibility(context));
         esname.setType(model.getElasticsearchType(name));
         stack.push(esname);

gradle.properties

@@ -1,6 +1,6 @@
 group = org.xbib
 name = cql
-version = 3.1.0
+version = 3.1.1
 
 gradle.wrapper.version = 6.6.1
 xbib-content.version = 3.0.0