org.apache.jena.sparql.engine.binding.BindingFactory#binding

Source File: QueryIterTripleStarPatternTest.java From RDFstarTools with Apache License 2.0

6 votes

@Test
public void matchSubjectInSubjectTriple()
{
	// << ?V1 ex:p ex:o >> ex:m1 ex:x1
	final Triple tp1 = new Triple( $V1(), $p(), $o() );
	final Node nTP1 = new Node_TripleStarPattern( tp1 );
	final Triple tp2 = new Triple( nTP1, $m1(), $x1() );

	final Binding inputBinding = BindingFactory.binding();
	final ExecutionContext execCxt = createTestExecCxt();
	final QueryIterator input = QueryIterSingleton.create(inputBinding, execCxt);

	final QueryIterator it = QueryIterTripleStarPattern.create( input, tp2, execCxt );
	assertTrue( it.hasNext() );

	final Binding outputBinding = it.nextBinding();
	assertEquals( 1, outputBinding.size() );
	assertEquals( $V1(), outputBinding.vars().next() );

	assertEquals( $s(), outputBinding.get($V1()) );

	assertFalse( it.hasNext() ); 
	it.close();
}

Source File: QueryIterTripleStarPatternTest.java From RDFstarTools with Apache License 2.0

6 votes

@Test
public void matchSubjectInSubjectTripleWithGivenObjectInMetaTriple()
{
	// << ?V1 ex:p ex:o >> ex:m1 ?V2
	final Triple tp1 = new Triple( $V1(), $p(), $o() );
	final Node nTP1 = new Node_TripleStarPattern( tp1 );
	final Triple tp2 = new Triple( nTP1, $m1(), $V2() );

	// ?V2 --> ex:x1
	final Binding inputBinding = BindingFactory.binding( $V2(), $x1() );
	final ExecutionContext execCxt = createTestExecCxt();
	final QueryIterator input = QueryIterSingleton.create(inputBinding, execCxt);

	final QueryIterator it = QueryIterTripleStarPattern.create( input, tp2, execCxt );
	assertTrue( it.hasNext() );

	final Binding outputBinding = it.nextBinding();
	assertEquals( 2, outputBinding.size() );

	assertEquals( $s(), outputBinding.get($V1()) );
	assertEquals( $x1(), outputBinding.get($V2()) );

	assertFalse( it.hasNext() ); 
	it.close();
}

Source File: QueryIterTripleStarPatternTest.java From RDFstarTools with Apache License 2.0

6 votes

@Test
public void matchNothingWithGivenObjectInObjectTriple()
{
	// ?V1 ?V2 << ex:s ex:p ?V3 >>
	final Triple tp1 = new Triple( $s(), $p(), $V3() );
	final Node nTP1 = new Node_TripleStarPattern( tp1 );
	final Triple tp2 = new Triple( $V1(), $V2(), nTP1 );

	// ?V3 --> ex:x1
	final Binding inputBinding = BindingFactory.binding( $V3(), $x1() );
	final ExecutionContext execCxt = createTestExecCxt();
	final QueryIterator input = QueryIterSingleton.create(inputBinding, execCxt);

	final QueryIterator it = QueryIterTripleStarPattern.create( input, tp2, execCxt );
	assertFalse( it.hasNext() ); 
	it.close();
}

Source File: QueryIterTripleStarPatternTest.java From RDFstarTools with Apache License 2.0

6 votes

@Test
public void matchObjectRequiresRedundancyAugmentation()
{
	// ex:s ex:p ?V3
	final Triple tp = new Triple( $s(), $p(), $V3() );

	final Binding inputBinding = BindingFactory.binding();
	final ExecutionContext execCxt = createTestExecCxt();
	final QueryIterator input = QueryIterSingleton.create(inputBinding, execCxt);

	final QueryIterator it = QueryIterTripleStarPattern.create( input, tp, execCxt );
	assertTrue( it.hasNext() );

	final Binding outputBinding = it.nextBinding();
	assertEquals( 1, outputBinding.size() );

	assertEquals( $o(), outputBinding.get($V3()) );

	assertFalse( it.hasNext() ); 
	it.close();
}

Source File: QueryIterTripleStarPatternTest.java From RDFstarTools with Apache License 2.0

6 votes

@Test
public void matchSubjectWithGivenObjectRequiresRedundancyAugmentation()
{
	// ?V1 ex:p ?V3
	final Triple tp = new Triple( $V1(), $p(), $V3() );

	// ?V3 --> ex:x1
	final Binding inputBinding = BindingFactory.binding( $V3(), $o() );
	final ExecutionContext execCxt = createTestExecCxt();
	final QueryIterator input = QueryIterSingleton.create(inputBinding, execCxt);

	final QueryIterator it = QueryIterTripleStarPattern.create( input, tp, execCxt );
	assertTrue( it.hasNext() );

	final Binding outputBinding = it.nextBinding();
	assertEquals( 2, outputBinding.size() );

	assertEquals( $s(), outputBinding.get($V1()) );
	assertEquals( $o(), outputBinding.get($V3()) );

	assertFalse( it.hasNext() ); 
	it.close();
}

Source File: BindPlan.java From sparql-generate with Apache License 2.0

6 votes

@Override
protected final Binding exec(Binding binding, Context context) {
    LOG.debug("Start " + this);
    context.set(ARQConstants.sysCurrentTime, NodeFactoryExtra.nowAsDateTime());
    final FunctionEnv env = new FunctionEnvBase(context);
    try {
        final NodeValue n = expr.eval(binding, env);
        if (LOG.isTraceEnabled()) {
            LOG.trace("New binding " + var + " = " + LogUtils.compress(n.asNode()));
        }
        return BindingFactory.binding(binding, var, n.asNode());
    } catch(ExprEvalException ex) {
        LOG.trace("No evaluation for " + this + " " + ex.getMessage());
        return binding;
    }
}

Source File: ResultSetWritersSPARQLStarTest.java From RDFstarTools with Apache License 2.0

5 votes

@Test
public void registrationOK() {
	final ResultSetWriterFactory f = ResultSetWriterRegistry.getFactory(SPARQLResultSetText); 
	assertTrue( f instanceof ResultSetWritersSPARQLStar.MyFactory );

	final Node u = NodeFactory.createURI("http://example.com/i");
	final Node n = new Node_Triple(new Triple(u, u, u));
	final Binding b = BindingFactory.binding(Var.alloc("t"), n);
	final ResultSet rs = new TestResultSet(b);
	final ByteArrayOutputStream out = new ByteArrayOutputStream(); 
	f.create(SPARQLResultSetText).write(out, rs, null);
}

Source File: QueryIterTripleStarPatternTest.java From RDFstarTools with Apache License 2.0

5 votes

@Test
public void matchWholeSubjectTriple()
{
	// ?V1 ex:m1 ex:x1
	final Triple tp = new Triple( $V1(), $m1(), $x1() );

	final ExecutionContext execCxt = createTestExecCxt();
	final Binding inputBinding = BindingFactory.binding();
	final QueryIterator input = QueryIterSingleton.create(inputBinding, execCxt);

	final QueryIterator it = QueryIterTripleStarPattern.create( input, tp, execCxt );
	assertTrue( it.hasNext() );

	final Binding outputBinding = it.nextBinding();
	assertEquals( 1, outputBinding.size() );
	assertEquals( $V1(), outputBinding.vars().next() );

	final Node outputValue = outputBinding.get( $V1() );  
	assertTrue( outputValue instanceof Node_Triple );

	final Triple outputTriple = ( (Node_Triple) outputValue ).get();
	assertEquals( $s(), outputTriple.getSubject() );
	assertEquals( $p(), outputTriple.getPredicate() );
	assertEquals( $o(), outputTriple.getObject() );

	assertFalse( it.hasNext() ); 
	it.close();
}

Source File: QueryIterTripleStarPatternTest.java From RDFstarTools with Apache License 2.0

5 votes

@Test
public void matchWholeObjectTriple()
{
	// ex:x1 ex:m1 ?V1
	final Triple tp = new Triple( $x1(), $m1(), $V1() );

	final ExecutionContext execCxt = createTestExecCxt();
	final Binding inputBinding = BindingFactory.binding();
	final QueryIterator input = QueryIterSingleton.create(inputBinding, execCxt);

	final QueryIterator it = QueryIterTripleStarPattern.create( input, tp, execCxt );
	assertTrue( it.hasNext() );

	final Binding outputBinding = it.nextBinding();
	assertEquals( 1, outputBinding.size() );
	assertEquals( $V1(), outputBinding.vars().next() );

	final Node outputValue = outputBinding.get( $V1() );  
	assertTrue( outputValue instanceof Node_Triple );

	final Triple outputTriple = ( (Node_Triple) outputValue ).get();
	assertEquals( $s(), outputTriple.getSubject() );
	assertEquals( $p(), outputTriple.getPredicate() );
	assertEquals( $o(), outputTriple.getObject() );

	assertFalse( it.hasNext() ); 
	it.close();
}

Source File: QueryIterTripleStarPatternTest.java From RDFstarTools with Apache License 2.0

5 votes

@Test
public void matchMetaTriplesBasedOnWholeSubjectTriple()
{
	//  << ex:s ex:p ex:o >> ?V1 ?V2
	final Triple tp1 = new Triple( $s(), $p(), $o() );
	final Node nTP1 = new Node_TripleStarPattern( tp1 );
	final Triple tp2 = new Triple( nTP1, $V1(), $V2() );

	final Binding inputBinding = BindingFactory.binding();
	final ExecutionContext execCxt = createTestExecCxt();
	final QueryIterator input = QueryIterSingleton.create(inputBinding, execCxt);

	final QueryIterator it = QueryIterTripleStarPattern.create( input, tp2, execCxt );
	assertTrue( it.hasNext() );

	Binding outputBinding = null;

	outputBinding = it.nextBinding();
	assertEquals( 2, outputBinding.size() );

	assertEquals( $m1(), outputBinding.get($V1()) );
	assertEquals( $x2(), outputBinding.get($V2()) );

	outputBinding = it.nextBinding();
	assertEquals( 2, outputBinding.size() );

	assertEquals( $m1(), outputBinding.get($V1()) );
	assertEquals( $x1(), outputBinding.get($V2()) );

	assertFalse( it.hasNext() ); 
	it.close();
}

Source File: QueryIterTripleStarPatternTest.java From RDFstarTools with Apache License 2.0

5 votes

@Test
public void matchSubjectInSubjectTripleAndObjectInMetaTriple()
{
	// << ?V1 ex:p ex:o >> ex:m1 ?V2
	final Triple tp1 = new Triple( $V1(), $p(), $o() );
	final Node nTP1 = new Node_TripleStarPattern( tp1 );
	final Triple tp2 = new Triple( nTP1, $m1(), $V2() );

	final Binding inputBinding = BindingFactory.binding();
	final ExecutionContext execCxt = createTestExecCxt();
	final QueryIterator input = QueryIterSingleton.create(inputBinding, execCxt);

	final QueryIterator it = QueryIterTripleStarPattern.create( input, tp2, execCxt );
	assertTrue( it.hasNext() );

	Binding outputBinding = it.nextBinding();
	assertEquals( 2, outputBinding.size() );

	assertEquals( $s(), outputBinding.get($V1()) );
	assertEquals( $x2(), outputBinding.get($V2()) );

	outputBinding = it.nextBinding();
	assertEquals( 2, outputBinding.size() );

	assertEquals( $s(), outputBinding.get($V1()) );
	assertEquals( $x1(), outputBinding.get($V2()) );

	assertFalse( it.hasNext() ); 
	it.close();
}

Source File: QueryIterTripleStarPatternTest.java From RDFstarTools with Apache License 2.0

5 votes

@Test
public void matchSubjectInMetaTripleWithGivenObjectInObjectTriple()
{
	// ?V1 ?V2 << ex:s ex:p ?V3 >>
	final Triple tp1 = new Triple( $s(), $p(), $V3() );
	final Node nTP1 = new Node_TripleStarPattern( tp1 );
	final Triple tp2 = new Triple( $V1(), $V2(), nTP1 );

	// ?V3 --> ex:o
	final Binding inputBinding = BindingFactory.binding( $V3(), $o() );
	final ExecutionContext execCxt = createTestExecCxt();
	final QueryIterator input = QueryIterSingleton.create(inputBinding, execCxt);

	final QueryIterator it = QueryIterTripleStarPattern.create( input, tp2, execCxt );
	assertTrue( it.hasNext() );

	Binding outputBinding = it.nextBinding();
	assertEquals( 3, outputBinding.size() );

	assertEquals( $x2(), outputBinding.get($V1()) );
	assertEquals( $m2(), outputBinding.get($V2()) );
	assertEquals( $o(), outputBinding.get($V3()) );

	outputBinding = it.nextBinding();
	assertEquals( 3, outputBinding.size() );

	assertEquals( $x1(), outputBinding.get($V1()) );
	assertEquals( $m1(), outputBinding.get($V2()) );
	assertEquals( $o(), outputBinding.get($V3()) );

	assertFalse( it.hasNext() ); 
	it.close();
}

Source File: QueryIterTripleStarPatternTest.java From RDFstarTools with Apache License 2.0

5 votes

@Test
public void matchSubjectInMetaTripleWithGivenSubjectInObjectTriple()
{
	// ?V1 ?V2 << ?V3 ex:p ex:o >>
	final Triple tp1 = new Triple( $s(), $p(), $V3() );
	final Node nTP1 = new Node_TripleStarPattern( tp1 );
	final Triple tp2 = new Triple( $V1(), $V2(), nTP1 );

	// ?V2 --> ex:m1, ?V3 --> ex:s
	final Binding inputBindingX = BindingFactory.binding( $V2(), $m1() );
	final Binding inputBinding = BindingFactory.binding( inputBindingX, $V3(), $o() );
	final ExecutionContext execCxt = createTestExecCxt();
	final QueryIterator input = QueryIterSingleton.create(inputBinding, execCxt);

	final QueryIterator it = QueryIterTripleStarPattern.create( input, tp2, execCxt );
	assertTrue( it.hasNext() );

	final Binding outputBinding = it.nextBinding();
	assertEquals( 3, outputBinding.size() );

	assertEquals( $x1(), outputBinding.get($V1()) );
	assertEquals( $m1(), outputBinding.get($V2()) );
	assertEquals( $o(), outputBinding.get($V3()) );

	assertFalse( it.hasNext() ); 
	it.close();
}

Source File: SourcePlan.java From sparql-generate with Apache License 2.0

5 votes

final protected Binding exec(
        final Binding binding,
        final Context context) {

    LOG.debug("Start " + this);
    Objects.nonNull(binding);
    // generate the source URI.
    final String sourceUri = getActualSource(binding);
    final String acceptHeader = getAcceptHeader(binding);
    LOG.trace("... resolved to SOURCE <" + sourceUri + "> ACCEPT " + acceptHeader + " AS " + var);
    final LookUpRequest request = new LookUpRequest(sourceUri, acceptHeader);
    final SPARQLExtStreamManager sm = (SPARQLExtStreamManager) context.get(SysRIOT.sysStreamManager);
    Objects.requireNonNull(sm);
    final TypedInputStream stream = sm.open(request);
    if (stream == null) {
        LOG.info("Exec SOURCE <" + sourceUri + "> ACCEPT " + acceptHeader + " AS " + var + " returned nothing.");
        return BindingFactory.binding(binding);
    }
    try (InputStream in = stream.getInputStream()) {
        final String literal = IOUtils.toString(in, "UTF-8");
        final RDFDatatype dt;
        if (stream.getMediaType() != null && stream.getMediaType().getContentType() != null) {
            dt = tm.getSafeTypeByName("http://www.iana.org/assignments/media-types/" + stream.getMediaType().getContentType());
        } else {
            dt = tm.getSafeTypeByName("http://www.w3.org/2001/XMLSchema#string");
        }
        final Node n = NodeFactory.createLiteral(literal, dt);
        LOG.debug("Exec " + this + " returned. "
                + "Enable TRACE level for more.");
        if (LOG.isTraceEnabled()) {
            LOG.trace("Exec " + this + " returned\n" + LogUtils.compress(n));
        }
        return BindingFactory.binding(binding, var, n);
    } catch (IOException | DatatypeFormatException ex) {
        LOG.warn("Exception while looking up " + sourceUri + ":", ex);
        return BindingFactory.binding(binding);
    }
}

Java Code Examples for org.apache.jena.sparql.engine.binding.BindingFactory#binding()