Quad-support for RDFParserBuildler

This changes intoGraph() to target(?)

where ? can be a Graph, Dataset or Consumer<Quad>

similarly parse() returns a Future<ParseResult> rather than
Future<Graph> - as there might not be any Graph


Project: http://git-wip-us.apache.org/repos/asf/incubator-commonsrdf/repo
Commit: 
http://git-wip-us.apache.org/repos/asf/incubator-commonsrdf/commit/defdbd91
Tree: http://git-wip-us.apache.org/repos/asf/incubator-commonsrdf/tree/defdbd91
Diff: http://git-wip-us.apache.org/repos/asf/incubator-commonsrdf/diff/defdbd91

Branch: refs/heads/jsonld-java
Commit: defdbd9160561ae93e8558a8f2c6cc27507b22bb
Parents: bb90a6e
Author: Stian Soiland-Reyes <st...@apache.org>
Authored: Wed Apr 13 16:50:31 2016 +0100
Committer: Stian Soiland-Reyes <st...@apache.org>
Committed: Wed Apr 13 16:50:31 2016 +0100

----------------------------------------------------------------------
 .../commons/rdf/api/RDFParserBuilder.java       | 174 ++++++++++++++-----
 .../rdf/simple/AbstractRDFParserBuilder.java    |  61 ++++---
 .../simple/AbstractRDFParserBuilderTest.java    |  40 +++--
 .../rdf/simple/DummyRDFParserBuilder.java       |  34 ++--
 4 files changed, 209 insertions(+), 100 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/incubator-commonsrdf/blob/defdbd91/api/src/main/java/org/apache/commons/rdf/api/RDFParserBuilder.java
----------------------------------------------------------------------
diff --git a/api/src/main/java/org/apache/commons/rdf/api/RDFParserBuilder.java 
b/api/src/main/java/org/apache/commons/rdf/api/RDFParserBuilder.java
index 1425263..0494502 100644
--- a/api/src/main/java/org/apache/commons/rdf/api/RDFParserBuilder.java
+++ b/api/src/main/java/org/apache/commons/rdf/api/RDFParserBuilder.java
@@ -22,58 +22,71 @@ import java.io.InputStream;
 import java.nio.charset.StandardCharsets;
 import java.nio.file.Path;
 import java.util.concurrent.Future;
+import java.util.function.Consumer;
 
 /**
- * Builder for parsing an RDF source into a Graph.
+ * Builder for parsing an RDF source into a target (e.g. a Graph/Dataset).
  * <p>
  * This interface follows the
  * <a href="https://en.wikipedia.org/wiki/Builder_pattern";>Builder pattern</a>,
  * allowing to set parser settings like {@link #contentType(RDFSyntax)} and
  * {@link #base(IRI)}. A caller MUST call one of the <code>source</code> 
methods
  * (e.g. {@link #source(IRI)}, {@link #source(Path)},
- * {@link #source(InputStream)}) before calling {@link #parse()} on the 
returned
+ * {@link #source(InputStream)}), and MUST call one of the <code>target</code>
+ * methods (e.g. {@link #target(Consumer)}, {@link #target(Dataset)},
+ * {@link #target(Graph)}) before calling {@link #parse()} on the returned
  * RDFParserBuilder - however methods can be called in any order.
  * <p>
- * The call to {@link #parse()} returns a {@link Future}, allowing 
asynchronous parse
- * operations. This can be combined with {@link #intoGraph(Graph)}
- * allowing access to the graph before parsing has completed,
- * however callers are still recommended to to check 
- * {@link Future#get()} for any exceptions thrown during parsing.
+ * The call to {@link #parse()} returns a {@link Future}, allowing asynchronous
+ * parse operations. Callers are recommended to check {@link Future#get()} to
+ * ensure parsing completed successfully, or catch exceptions thrown during
+ * parsing.
  * <p>
  * Setting a method that has already been set will override any existing value
  * in the returned builder - irregardless of the parameter type (e.g.
  * {@link #source(IRI)} will override a previous {@link #source(Path)}. 
Settings
- * can be unset by passing <code>null</code> - this may require casting, e.g.
- * <code>contentType( (RDFSyntax) null )</code> to undo a previous call to
- * {@link #contentType(RDFSyntax)}.
+ * can be unset by passing <code>null</code> - note that this may 
+ * require casting, e.g. <code>contentType( (RDFSyntax) null )</code> 
+ * to undo a previous call to {@link #contentType(RDFSyntax)}.
  * <p>
  * It is undefined if a RDFParserBuilder is mutable or thread-safe, so callers
  * should always use the returned modified RDFParserBuilder from the builder
- * methods. The builder may return itself, or a cloned builder with the 
modified
- * settings applied. Implementations are however encouraged to be 
- * immutable and thread-safe and document this, 
- * as an example starting point, see 
+ * methods. The builder may return itself after modification, 
+ * or a cloned builder with the modified settings applied. 
+ * Implementations are however encouraged to be immutable,
+ * thread-safe and document this. As an example starting point, see
  * {@link org.apache.commons.rdf.simple.AbstractRDFParserBuilder}.
  * <p>
  * Example usage:
  * </p>
  * 
  * <pre>
- *   // Retrieve populated graph from the Future
- *   Graph g1 = 
ExampleRDFParserBuilder.source("http://example.com/graph.rdf";).parse().get(30, 
TimeUnit.Seconds);
- *   // Or parsing into an existing Graph:
- *   
ExampleRDFParserBuilder.source(Paths.get("/tmp/graph.ttl").contentType(RDFSyntax.TURTLE).intoGraph(g1).parse();
+ *   Graph g1 = rDFTermFactory.createGraph();
+ *   new ExampleRDFParserBuilder()
+ *     .source(Paths.get("/tmp/graph.ttl"))
+ *     .contentType(RDFSyntax.TURTLE)
+ *     .target(g1)
+ *     .parse().get(30, TimeUnit.Seconds);
  * </pre>
- * 
  *
  */
 public interface RDFParserBuilder {
 
+       /** 
+        * The result of {@link RDFParserBuilder#parse()} indicating
+        * parsing completed.
+        * <p>
+        * This is a marker interface that may be subclassed to include
+        * parser details, e.g. warning messages or triple counts.
+        */
+       public interface ParseResult {          
+       }
+
        /**
         * Specify which {@link RDFTermFactory} to use for generating
         * {@link RDFTerm}s.
         * <p>
-        * This option may be used together with {@link #intoGraph(Graph)} to
+        * This option may be used together with {@link #target(Graph)} to
         * override the implementation's default factory and graph.
         * <p>
         * <strong>Warning:</strong> Using the same {@link RDFTermFactory} for 
@@ -82,7 +95,7 @@ public interface RDFParserBuilder {
         * use the {@link RDFTermFactory#createBlankNode(String)} method
         * from the parsed blank node labels.
         * 
-        * @see #intoGraph(Graph)
+        * @see #target(Graph)
         * @param rdfTermFactory
         *            {@link RDFTermFactory} to use for generating RDFTerms.
         * @return An {@link RDFParserBuilder} that will use the specified
@@ -144,30 +157,97 @@ public interface RDFParserBuilder {
        RDFParserBuilder contentType(String contentType) throws 
IllegalArgumentException;
 
        /**
-        * Specify which {@link Graph} to add triples to.
-        * <p>
-        * The default (if this option has not been set) is that each call to
-        * {@link #parse()} return a new {@link Graph}, which is created using
-        * {@link RDFTermFactory#createGraph()} if
-        * {@link #rdfTermFactory(RDFTermFactory)} has been set.
-        * <p>
-        * It is undefined if any triples are added to the specified
-        * {@link Graph} if the {@link Future#get()} returned from 
-        * {@link #parse()} throws any exceptions. (However 
-        * implementations are free to prevent this using transaction 
-        * mechanisms or similar).  However, if {@link Future#get()}
-        * does not indicatean exception, the 
-        * parser implementation SHOULD have inserted all parsed triples 
-        * to the specified graph.
+        * Specify a {@link Graph} to add parsed triples to.
+        * <p>
+        * If the source supports datasets (e.g. the {@link 
#contentType(RDFSyntax)}
+        * set has {@link RDFSyntax#supportsDataset} is true)), then only quads 
in
+        * the <em>default graph</em> will be added to the Graph as {@link 
Triple}s.
+        * <p>
+        * It is undefined if any triples are added to the specified {@link 
Graph}
+        * if {@link #parse()} throws any exceptions. (However implementations 
are
+        * free to prevent this using transaction mechanisms or similar). If
+        * {@link Future#get()} does not indicate an exception, the parser
+        * implementation SHOULD have inserted all parsed triples to the 
specified
+        * graph.
+        * <p>
+        * Calling this method will override any earlier targets set with
+        * {@link #target(Graph)}, {@link #target(Consumer)} or
+        * {@link #target(Dataset)}.
+        * <p>
+        * The default implementation of this method calls {@link 
#target(Consumer)}
+        * with a {@link Consumer} that does {@link Graph#add(Triple)} with
+        * {@link Quad#asTriple()} if the quad is in the default graph.
         * 
         * @param graph
-        *            The {@link Graph} to add triples into.
+        *            The {@link Graph} to add triples to.
         * @return An {@link RDFParserBuilder} that will insert triples into the
         *         specified graph.
         */
-       RDFParserBuilder intoGraph(Graph graph);
+       default RDFParserBuilder target(Graph graph) {          
+               return target(q -> { 
+                       if (! q.getGraphName().isPresent()) { 
+                               graph.add(q.asTriple());
+                       }
+               });
+       }
 
        /**
+        * Specify a {@link Dataset} to add parsed quads to.
+        * <p>
+        * It is undefined if any quads are added to the specified
+        * {@link Dataset} if {@link #parse()} throws any exceptions. 
+        * (However implementations are free to prevent this using transaction 
+        * mechanisms or similar).  On the other hand, if {@link #parse()}
+        * does not indicate an exception, the 
+        * implementation SHOULD have inserted all parsed quads 
+        * to the specified dataset.
+        * <p>
+        * Calling this method will override any earlier targets set with 
+        * {@link #target(Graph)}, {@link #target(Consumer)} or {@link 
#target(Dataset)}.
+        * <p>
+        * The default implementation of this method calls {@link 
#target(Consumer)}
+        * with a {@link Consumer} that does {@link Dataset#add(Quad)}.
+        * 
+        * @param dataset
+        *            The {@link Dataset} to add quads to.
+        * @return An {@link RDFParserBuilder} that will insert triples into the
+        *         specified dataset.
+        */
+       default RDFParserBuilder target(Dataset dataset) {
+               return target(dataset::add);
+       }
+
+       /**
+        * Specify a consumer for parsed quads.
+        * <p>
+        * It is undefined if any quads are consumed if {@link #parse()} throws 
any
+        * exceptions. On the other hand, if {@link #parse()} does not indicate 
an
+        * exception, the implementation SHOULD have produced all parsed quads 
to
+        * the specified consumer.
+        * <p>
+        * Calling this method will override any earlier targets set with
+        * {@link #target(Graph)}, {@link #target(Consumer)} or
+        * {@link #target(Dataset)}.
+        * <p>
+        * The consumer is not assumed to be thread safe - only one
+        * {@link Consumer#accept(Object)} is delivered at a time for a given
+        * {@link RDFParserBuilder#parse()} call.
+        * <p>
+        * This method is typically called with a functional consumer, for 
example:
+        * <pre>
+        * List<Quad> quads = new ArrayList<Quad>;
+        * parserBuilder.target(quads::add).parse();
+        * </pre>
+        * 
+        * @param consumer
+        *            A {@link Consumer} of {@link Quad}s
+        * @return An {@link RDFParserBuilder} that will call the consumer for 
into
+        *         the specified dataset.
+        * @return
+        */
+       RDFParserBuilder target(Consumer<Quad> consumer);
+       
+       /**
         * Specify a base IRI to use for parsing any relative IRI references.
         * <p>
         * Setting this option will override any protocol-specific base IRI 
(e.g.
@@ -345,6 +425,11 @@ public interface RDFParserBuilder {
         * method) MUST have been called before calling this method, otherwise 
an
         * {@link IllegalStateException} will be thrown.
         * <p>
+        * A target method (e.g. {@link #target(Consumer)}, {@link 
#target(Dataset)}
+        * , {@link #target(Graph)} or an equivalent subclass method) MUST have 
been
+        * called before calling this method, otherwise an
+        * {@link IllegalStateException} will be thrown.
+        * <p>
         * It is undefined if this method is thread-safe, however the
         * {@link RDFParserBuilder} may be reused (e.g. setting a different 
source)
         * as soon as the {@link Future} has been returned from this method.
@@ -357,12 +442,15 @@ public interface RDFParserBuilder {
         * synchronous implementation MAY be blocking on the 
<code>parse()</code>
         * call and return a Future that is already {@link Future#isDone()}.
         * <p>
-        * If {@link #intoGraph(Graph)} has been specified, this SHOULD be the 
same
-        * {@link Graph} instance returned from {@link Future#get()} once 
parsing has
-        * completed successfully.
+        * The returned {@link Future} contains a {@link ParseResult}. 
+        * Implementations may subclass this interface to provide any 
+        * parser details, e.g. list of warnings. <code>null</code> is a
+        * possible return value if no details are available, but 
+        * parsing succeeded.
         * <p>
         * If an exception occurs during parsing, (e.g. {@link IOException} or
-        * {@link java.text.ParseException}), it should be indicated as the
+        * {@link 
org.apache.commons.rdf.simple.AbstractRDFParserBuilder.RDFParseException}), 
+        * it should be indicated as the
         * {@link java.util.concurrent.ExecutionException#getCause()} in the
         * {@link java.util.concurrent.ExecutionException} thrown on
         * {@link Future#get()}.
@@ -380,5 +468,5 @@ public interface RDFParserBuilder {
         *             If the builder is in an invalid state, e.g. a
         *             <code>source</code> has not been set.
         */
-       Future<Graph> parse() throws IOException, IllegalStateException;
+       Future<? extends ParseResult> parse() throws IOException, 
IllegalStateException;
 }

http://git-wip-us.apache.org/repos/asf/incubator-commonsrdf/blob/defdbd91/simple/src/main/java/org/apache/commons/rdf/simple/AbstractRDFParserBuilder.java
----------------------------------------------------------------------
diff --git 
a/simple/src/main/java/org/apache/commons/rdf/simple/AbstractRDFParserBuilder.java
 
b/simple/src/main/java/org/apache/commons/rdf/simple/AbstractRDFParserBuilder.java
index ab37eef..9544928 100644
--- 
a/simple/src/main/java/org/apache/commons/rdf/simple/AbstractRDFParserBuilder.java
+++ 
b/simple/src/main/java/org/apache/commons/rdf/simple/AbstractRDFParserBuilder.java
@@ -26,9 +26,10 @@ import java.util.Optional;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 import java.util.concurrent.Future;
+import java.util.function.Consumer;
 
-import org.apache.commons.rdf.api.Graph;
 import org.apache.commons.rdf.api.IRI;
+import org.apache.commons.rdf.api.Quad;
 import org.apache.commons.rdf.api.RDFParserBuilder;
 import org.apache.commons.rdf.api.RDFSyntax;
 import org.apache.commons.rdf.api.RDFTermFactory;
@@ -111,15 +112,14 @@ public abstract class AbstractRDFParserBuilder implements 
RDFParserBuilder, Clon
        }
 
        /**
-        * Get the set {@link Graph} to insert into, if any.
+        * Get the target to consume parsed Quads.
         * <p>
         * From the call to {@link #parseSynchronusly()}, this
-        * method is always {@link Optional#isPresent()}
-        * with a new {@link Graph} instance, and 
-        * will be the value returned from {@link #parse()}.
+        * method is always {@link Optional#isPresent()}.
+        * 
         */     
-       public Optional<Graph> getIntoGraph() {
-               return intoGraph;
+       public Consumer<Quad> getTarget() {
+               return target;
        }
 
        /**
@@ -167,11 +167,11 @@ public abstract class AbstractRDFParserBuilder implements 
RDFParserBuilder, Clon
        private Optional<RDFTermFactory> rdfTermFactory = Optional.empty();
        private Optional<RDFSyntax> contentTypeSyntax = Optional.empty();
        private Optional<String> contentType = Optional.empty();
-       private Optional<Graph> intoGraph = Optional.empty();
        private Optional<IRI> base = Optional.empty();
        private Optional<InputStream> sourceInputStream = Optional.empty();
        private Optional<Path> sourceFile = Optional.empty();
        private Optional<IRI> sourceIri = Optional.empty();
+       private Consumer<Quad> target;
 
        @Override
        public AbstractRDFParserBuilder clone() {
@@ -206,13 +206,6 @@ public abstract class AbstractRDFParserBuilder implements 
RDFParserBuilder, Clon
        }
 
        @Override
-       public RDFParserBuilder intoGraph(Graph graph) {
-               AbstractRDFParserBuilder c = clone();
-               c.intoGraph = Optional.ofNullable(graph);
-               return c;
-       }
-
-       @Override
        public RDFParserBuilder base(IRI base) {
                AbstractRDFParserBuilder c = clone();
                c.base = Optional.ofNullable(base);
@@ -361,8 +354,10 @@ public abstract class AbstractRDFParserBuilder implements 
RDFParserBuilder, Clon
         */
        protected AbstractRDFParserBuilder prepareForParsing() throws 
IOException, IllegalStateException {
                checkSource();
-               checkBaseRequired();
+               checkBaseRequired();            
                checkContentType();
+               checkTarget();
+
                // We'll make a clone of our current state which will be passed 
to
                // parseSynchronously()
                AbstractRDFParserBuilder c = clone();
@@ -371,10 +366,6 @@ public abstract class AbstractRDFParserBuilder implements 
RDFParserBuilder, Clon
                if (!c.rdfTermFactory.isPresent()) {
                        c.rdfTermFactory = Optional.of(createRDFTermFactory());
                }
-               // No graph? We'll create one.
-               if (!c.intoGraph.isPresent()) {
-                       c.intoGraph = 
c.rdfTermFactory.map(RDFTermFactory::createGraph);
-               }
                // sourceFile, but no base? Let's follow any symlinks and use
                // the file:/// URI
                if (c.sourceFile.isPresent() && !c.base.isPresent()) {
@@ -386,6 +377,19 @@ public abstract class AbstractRDFParserBuilder implements 
RDFParserBuilder, Clon
        }
        
        /**
+        * Subclasses can override this method to check the target is 
+        * valid.
+        * <p>
+        * The default implementation throws an IllegalStateException if the 
+        * target has not been set.
+        */
+       protected void checkTarget() {
+               if (target == null) {
+                       throw new IllegalStateException("target has not been 
set");
+               }
+       }
+
+       /**
         * Subclasses can override this method to check compatibility with the
         * contentType setting.
         * 
@@ -441,13 +445,11 @@ public abstract class AbstractRDFParserBuilder implements 
RDFParserBuilder, Clon
         * <p>
         * This is called by {@link #parse()} to set 
         * {@link #rdfTermFactory(RDFTermFactory)} if it is
-        * {@link Optional#empty()}, and therefore used also for 
-        * creating a new {@link Graph} if 
-        * {@link #getIntoGraph()} is {@link Optional#empty()}.
+        * {@link Optional#empty()}.
         * <p>
         * As parsed blank nodes might be made with 
         * {@link RDFTermFactory#createBlankNode(String)}, 
-        * each call to this method should return 
+        * each call to this method SHOULD return 
         * a new RDFTermFactory instance.
         * 
         * @return A new {@link RDFTermFactory}
@@ -457,12 +459,19 @@ public abstract class AbstractRDFParserBuilder implements 
RDFParserBuilder, Clon
        }
 
        @Override
-       public Future<Graph> parse() throws IOException, IllegalStateException {
+       public Future<ParseResult> parse() throws IOException, 
IllegalStateException {
                final AbstractRDFParserBuilder c = prepareForParsing();
                return threadpool.submit(() -> {
                        c.parseSynchronusly();
-                       return c.intoGraph.get();
+                       return null;
                });
        }
 
+       @Override
+       public RDFParserBuilder target(Consumer<Quad> consumer) {
+               AbstractRDFParserBuilder c = clone();
+               c.target = consumer;
+               return c;
+       }
+
 }

http://git-wip-us.apache.org/repos/asf/incubator-commonsrdf/blob/defdbd91/simple/src/test/java/org/apache/commons/rdf/simple/AbstractRDFParserBuilderTest.java
----------------------------------------------------------------------
diff --git 
a/simple/src/test/java/org/apache/commons/rdf/simple/AbstractRDFParserBuilderTest.java
 
b/simple/src/test/java/org/apache/commons/rdf/simple/AbstractRDFParserBuilderTest.java
index d23e1c8..439bacb 100644
--- 
a/simple/src/test/java/org/apache/commons/rdf/simple/AbstractRDFParserBuilderTest.java
+++ 
b/simple/src/test/java/org/apache/commons/rdf/simple/AbstractRDFParserBuilderTest.java
@@ -17,7 +17,10 @@
  */
 package org.apache.commons.rdf.simple;
 
-import static org.junit.Assert.*;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
 
 import java.io.ByteArrayInputStream;
 import java.io.IOException;
@@ -102,9 +105,10 @@ public class AbstractRDFParserBuilderTest {
        }
        
        @Test
-       public void parseFile() throws Exception {
-               RDFParserBuilder parser = dummyParser.source(testNt);
-               Graph g = parser.parse().get(5, TimeUnit.SECONDS);
+       public void parseFile() throws Exception {      
+               Graph g = factory.createGraph();
+               RDFParserBuilder parser = dummyParser.source(testNt).target(g);
+               parser.parse().get(5, TimeUnit.SECONDS);
                checkGraph(g);
                // FIXME: this could potentially break if the equivalent of 
/tmp includes
                // international characters
@@ -148,8 +152,12 @@ public class AbstractRDFParserBuilderTest {
        
        @Test
        public void parseFileContentType() throws Exception {
-               RDFParserBuilder parser = 
dummyParser.source(testNt).contentType(RDFSyntax.NTRIPLES);
-               Graph g = parser.parse().get(5, TimeUnit.SECONDS);
+               Graph g = factory.createGraph();
+               RDFParserBuilder parser = dummyParser
+                               .source(testNt)
+                               .contentType(RDFSyntax.NTRIPLES)
+                               .target(g);
+               parser.parse().get(5, TimeUnit.SECONDS);
                checkGraph(g);
                // FIXME: this could potentially break if the equivalent of 
/tmp includes
                // international characters
@@ -183,8 +191,9 @@ public class AbstractRDFParserBuilderTest {
        public void parseInputStreamWithBase() throws Exception {
                InputStream inputStream = new ByteArrayInputStream(new byte[0]);
                IRI base = 
dummyParser.createRDFTermFactory().createIRI("http://www.example.org/test.rdf";);
-               RDFParserBuilder parser = 
dummyParser.source(inputStream).base(base);           
-               Graph g = parser.parse().get(5, TimeUnit.SECONDS);
+               Graph g = factory.createGraph();
+               RDFParserBuilder parser = 
dummyParser.source(inputStream).base(base).target(g);         
+               parser.parse().get(5, TimeUnit.SECONDS);
                checkGraph(g);
                assertEquals("<http://www.example.org/test.rdf>", 
firstPredicate(g, "base"));
                // in our particular debug output, 
@@ -197,8 +206,9 @@ public class AbstractRDFParserBuilderTest {
        @Test
        public void parseInputStreamWithNQuads() throws Exception {
                InputStream inputStream = new ByteArrayInputStream(new byte[0]);
-               RDFParserBuilder parser = 
dummyParser.source(inputStream).contentType(RDFSyntax.NQUADS);                
-               Graph g = parser.parse().get(5, TimeUnit.SECONDS);
+               Graph g = factory.createGraph();
+               RDFParserBuilder parser = 
dummyParser.source(inputStream).contentType(RDFSyntax.NQUADS).target(g);        
      
+               parser.parse().get(5, TimeUnit.SECONDS);
                checkGraph(g);
                assertNull(firstPredicate(g, "base"));
                // in our particular debug output, 
@@ -211,8 +221,9 @@ public class AbstractRDFParserBuilderTest {
        @Test
        public void parseIRI() throws Exception {
                IRI iri = 
dummyParser.createRDFTermFactory().createIRI("http://www.example.net/test.ttl";);
-               RDFParserBuilder parser = dummyParser.source(iri);              
-               Graph g = parser.parse().get(5, TimeUnit.SECONDS);
+               Graph g = factory.createGraph();
+               RDFParserBuilder parser = dummyParser.source(iri).target(g);    
        
+               parser.parse().get(5, TimeUnit.SECONDS);
                checkGraph(g);
                assertEquals("<http://www.example.net/test.ttl>", 
firstPredicate(g, "source"));
                // No base - assuming the above IRI is always 
@@ -228,8 +239,9 @@ public class AbstractRDFParserBuilderTest {
        @Test
        public void parseIRIBaseContentType() throws Exception {
                IRI iri = 
dummyParser.createRDFTermFactory().createIRI("http://www.example.net/test.ttl";);
-               RDFParserBuilder parser = 
dummyParser.source(iri).base(iri).contentType(RDFSyntax.TURTLE);
-               Graph g = parser.parse().get(5, TimeUnit.SECONDS);
+               Graph g = factory.createGraph();
+               RDFParserBuilder parser = 
dummyParser.source(iri).base(iri).contentType(RDFSyntax.TURTLE).target(g);
+               parser.parse().get(5, TimeUnit.SECONDS);
                checkGraph(g);
                assertEquals("<http://www.example.net/test.ttl>", 
firstPredicate(g, "source"));
                assertEquals("<http://www.example.net/test.ttl>", 
firstPredicate(g, "base"));

http://git-wip-us.apache.org/repos/asf/incubator-commonsrdf/blob/defdbd91/simple/src/test/java/org/apache/commons/rdf/simple/DummyRDFParserBuilder.java
----------------------------------------------------------------------
diff --git 
a/simple/src/test/java/org/apache/commons/rdf/simple/DummyRDFParserBuilder.java 
b/simple/src/test/java/org/apache/commons/rdf/simple/DummyRDFParserBuilder.java
index cc62f0c..0cb7093 100644
--- 
a/simple/src/test/java/org/apache/commons/rdf/simple/DummyRDFParserBuilder.java
+++ 
b/simple/src/test/java/org/apache/commons/rdf/simple/DummyRDFParserBuilder.java
@@ -18,11 +18,11 @@
 package org.apache.commons.rdf.simple;
 
 import java.io.IOException;
-import java.text.ParseException;
 import java.util.UUID;
+import java.util.function.Consumer;
 
-import org.apache.commons.rdf.api.Graph;
 import org.apache.commons.rdf.api.IRI;
+import org.apache.commons.rdf.api.Quad;
 import org.apache.commons.rdf.api.RDFParserBuilder;
 import org.apache.commons.rdf.api.RDFTermFactory;
 
@@ -49,47 +49,47 @@ public class DummyRDFParserBuilder extends 
AbstractRDFParserBuilder {
        protected void parseSynchronusly() throws IOException, 
IllegalStateException, RDFParseException {               
                // From parseSynchronusly both of these are always present
                RDFTermFactory factory = getRdfTermFactory().get();
-               Graph graph = getIntoGraph().get();
+               Consumer<Quad> t = getTarget();
                                
                // well - each parsing is unique. This should hopefully
                // catch any accidental double parsing
                IRI parsing = factory.createIRI("urn:uuid:" + 
UUID.randomUUID());
-               graph.add(parsing, 
factory.createIRI("http://example.com/greeting";), 
-                               factory.createLiteral("Hello world"));
+               t.accept(factory.createQuad(null, parsing, 
factory.createIRI("http://example.com/greeting";), 
+                               factory.createLiteral("Hello world")));
                
                // Now we'll expose the finalized AbstractRDFParserBuilder 
settings
                // so they can be inspected by the junit test
 
                if (getSourceIri().isPresent()) {
-                       graph.add(parsing, 
+                       t.accept(factory.createQuad(null, parsing, 
                                        
factory.createIRI("http://example.com/source";),
-                                       getSourceIri().get());                  
+                                       getSourceIri().get()));                 
                }               
                if (getSourceFile().isPresent()) {
-                       graph.add(parsing, 
+                       t.accept(factory.createQuad(null, parsing, 
                                        
factory.createIRI("http://example.com/source";),
-                                       
factory.createIRI(getSourceFile().get().toUri().toString()));
+                                       
factory.createIRI(getSourceFile().get().toUri().toString())));
                }
                if (getSourceInputStream().isPresent()) { 
-                       graph.add(parsing, 
+                       t.accept(factory.createQuad(null, parsing, 
                                        
factory.createIRI("http://example.com/source";),
-                                       factory.createBlankNode());
+                                       factory.createBlankNode()));
                }
 
                if (getBase().isPresent()) { 
-                       graph.add(parsing, 
+                       t.accept(factory.createQuad(null, parsing, 
                                        
factory.createIRI("http://example.com/base";),
-                                       getBase().get());
+                                       getBase().get()));
                }
                if (getContentType().isPresent()) {
-                       graph.add(parsing, 
+                       t.accept(factory.createQuad(null, parsing, 
                                        
factory.createIRI("http://example.com/contentType";),
-                                       
factory.createLiteral(getContentType().get()));
+                                       
factory.createLiteral(getContentType().get())));
                }
                if (getContentTypeSyntax().isPresent()) {
-                       graph.add(parsing, 
+                       t.accept(factory.createQuad(null, parsing, 
                                        
factory.createIRI("http://example.com/contentTypeSyntax";),
-                                       
factory.createLiteral(getContentTypeSyntax().get().name()));
+                                       
factory.createLiteral(getContentTypeSyntax().get().name())));
                }               
        }
 

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