Examples of org.openrdf.model.Graph.match()

org.openrdf.model.Graph.match()
Gets the statements with the specified subject, predicate, object and (optionally) context. The subject, predicate and object parameters can be null to indicate wildcards. The contexts parameter is a wildcard and accepts zero or more values. If no contexts are specified, statements will match disregarding their context. If one or more contexts are specified, statements with a context matching one of these will match. Note: to match statements without an associated context, specify the value null and explicitly cast it to type Resource.
Examples: graph.match(s1, null, null) matches all statements that have subject s1,
graph.match(null, null, null, c1) matches all statements that have context c1,
graph.match(null, null, null, (Resource)null) matches all statements that have no associated context,
graph.match(null, null, null, c1, c2, c3) matches all statements that have context c1, c2 or c3. @param subj The subject of the statements to match, null to match statements with any subject. @param pred The predicate of the statements to match, null to match statements with any predicate. @param obj The object of the statements to match, null to match statements with any object. @param contexts The contexts of the statements to match. If no contexts are specified, statements will match disregarding their context. If one or more contexts are specified, statements with a context matching one of these will match. @return The statements that match the specified pattern.

                    value = value.substring( value.lastIndexOf( ':' ) + 1, value.length() );
                    String name = field.getName();
                    input.addField( name, value );
                } else if( statement.getObject() instanceof BNode )
                {
                    Iterator<Statement> seq = graph.match( (Resource) statement.getObject(), new URIImpl( "http://www.w3.org/1999/02/22-rdf-syntax-ns#li" ), null, (Resource) null );
                    while( seq.hasNext() )
                    {
                        Statement seqStatement = seq.next();
                        String value = seqStatement.getObject().stringValue();
                        value = value.substring( value.lastIndexOf( ':' ) + 1, value.length() );

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      }


      final Resource aTmpRes = EmpireUtil.asResource(aTmpSupportsRdfId);
      Set<URI> aProps = new HashSet<URI>();
      
      Iterator<Statement> sIter = aGraph.match(aTmpRes, null, null);


      while (sIter.hasNext()) {
        Statement aStmt = sIter.next();
        aProps.add(aStmt.getPredicate());
      }

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        finally {
          setAccessible(aAccess, aOldAccess);
        }
      }
      
      sIter = aGraph.match(aTmpRes, null, null);
      Graph aInstanceTriples = Graphs.newGraph();


      while (sIter.hasNext()) {
        Statement aStmt = sIter.next();

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    em.merge(aObj);


    Graph aGraph = Graphs.newGraph(aSource.getStatements(null, null, null));


    assertEquals(3, aGraph.size());
    assertEquals(1, Lists.newArrayList(aGraph.match(null, ValueFactoryImpl.getInstance().createURI("urn:label"), null)).size());


    em.remove(aObj);


    ParentEntity pe = InstanceGenerator.generateInstanceClass(ParentEntity.class).newInstance();
    pe.setEntity(aObj);

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    em.persist(pe);


    aGraph = Graphs.newGraph(aSource.getStatements(null, null, null));


    assertEquals(5, aGraph.size());
    assertEquals(1, Lists.newArrayList(aGraph.match(null, ValueFactoryImpl.getInstance().createURI("urn:label"), null)).size());


    aObj.setLabel("foobarbaz");


    em.merge(pe);

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    em.merge(pe);


    aGraph = Graphs.newGraph(aSource.getStatements(null, null, null));


    assertEquals(5, aGraph.size());
    assertEquals(1, Lists.newArrayList(aGraph.match(null, ValueFactoryImpl.getInstance().createURI("urn:label"), null)).size());
  }




  /**
   * Tests the same basic thing as {@link #testDuplicate()} except we do refreshes after persists which should auto-update the information in the EmpireGenerated

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    em.merge(aObj);


    Graph aGraph = Graphs.newGraph(aSource.getStatements(null, null, null));


    assertEquals(3, aGraph.size());
    assertEquals(1, Lists.newArrayList(aGraph.match(null, ValueFactoryImpl.getInstance().createURI("urn:label"), null)).size());


    em.remove(aObj);


    ParentEntity pe = InstanceGenerator.generateInstanceClass(ParentEntity.class).newInstance();
    pe.setEntity(aObj);

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    em.refresh(pe);


    aGraph = Graphs.newGraph(aSource.getStatements(null, null, null));


    assertEquals(5, aGraph.size());
    assertEquals(1, Lists.newArrayList(aGraph.match(null, ValueFactoryImpl.getInstance().createURI("urn:label"), null)).size());


    aObj.setLabel("foobarbaz");


    em.merge(pe);

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    em.merge(pe);


    aGraph = Graphs.newGraph(aSource.getStatements(null, null, null));


    assertEquals(5, aGraph.size());
    assertEquals(1, Lists.newArrayList(aGraph.match(null, ValueFactoryImpl.getInstance().createURI("urn:label"), null)).size());
  }


  /**
   * Test for basic proxying using Javassist
   * @throws Exception test error

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