the DataSource classes have to return their API-specific request parser now

Author: Olaf Hartig

src/org/linkeddatafragments/datasource/DataSource.java

@@ -1,10 +1,5 @@
 package org.linkeddatafragments.datasource;
 
-import org.linkeddatafragments.fragments.IFragmentRequestParser;
-import org.linkeddatafragments.fragments.LinkedDataFragmentRequest;
-import org.linkeddatafragments.fragments.tpf.TPFRequestParser;
-import org.linkeddatafragments.fragments.tpf.TriplePatternFragmentRequest;
-
 /**
  *
  * @author mielvandersande
@@ -29,19 +24,6 @@ public String getTitle() {
         return this.title;
     };
 
-    /**
-     * This implementation assumes that requests are
-     * {@link TriplePatternFragmentRequest}s.
-     *
-     * Data sources for other types of {@link LinkedDataFragmentRequest}s must
-     * override this method accordingly.
-     */
-    @Override
-    public IFragmentRequestParser getRequestParser()
-    {
-        return new TPFRequestParser();
-    }
-
     @Override
     public void close() {}
 }

src/org/linkeddatafragments/datasource/hdt/HdtDataSource.java

@@ -4,6 +4,8 @@
 
 import org.linkeddatafragments.datasource.DataSource;
 import org.linkeddatafragments.datasource.IFragmentRequestProcessor;
+import org.linkeddatafragments.fragments.IFragmentRequestParser;
+import org.linkeddatafragments.fragments.tpf.TPFRequestParserForJenaBackends;
 
 /**
  * An HDT data source of Basic Linked Data Fragments.
@@ -28,6 +30,12 @@ public HdtDataSource(String title, String description, String hdtFile) throws IO
         requestProcessor = new HdtBasedRequestProcessorForTPFs( hdtFile );
     }
 
+    @Override
+    public IFragmentRequestParser getRequestParser()
+    {
+        return TPFRequestParserForJenaBackends.getInstance();
+    }
+
     @Override
     public IFragmentRequestProcessor getRequestProcessor()
     {

src/org/linkeddatafragments/datasource/index/IndexDataSource.java

@@ -5,6 +5,8 @@
 import org.linkeddatafragments.datasource.DataSource;
 import org.linkeddatafragments.datasource.IDataSource;
 import org.linkeddatafragments.datasource.IFragmentRequestProcessor;
+import org.linkeddatafragments.fragments.IFragmentRequestParser;
+import org.linkeddatafragments.fragments.tpf.TPFRequestParserForJenaBackends;
 
 /**
  * An Index data source provides an overview of all available datasets.
@@ -21,6 +23,12 @@ public IndexDataSource(String baseUrl, HashMap<String, IDataSource> datasources)
         requestProcessor = new IndexRequestProcessorForTPFs( baseUrl, datasources );
     }
 
+    @Override
+    public IFragmentRequestParser getRequestParser()
+    {
+        return TPFRequestParserForJenaBackends.getInstance();
+    }
+
     @Override
     public IFragmentRequestProcessor getRequestProcessor()
     {

src/org/linkeddatafragments/datasource/tdb/JenaTDBDataSource.java

@@ -4,6 +4,8 @@
 
 import org.linkeddatafragments.datasource.DataSource;
 import org.linkeddatafragments.datasource.IFragmentRequestProcessor;
+import org.linkeddatafragments.fragments.IFragmentRequestParser;
+import org.linkeddatafragments.fragments.tpf.TPFRequestParserForJenaBackends;
 
 /**
  * Experimental Jena TDB-backed data source of Basic Linked Data Fragments.
@@ -15,6 +17,12 @@ public class JenaTDBDataSource extends DataSource {
 
     protected final JenaTDBBasedRequestProcessorForTPFs requestProcessor;
 
+    @Override
+    public IFragmentRequestParser getRequestParser()
+    {
+        return TPFRequestParserForJenaBackends.getInstance();
+    }
+
     @Override
     public IFragmentRequestProcessor getRequestProcessor()
     {