Examples with MultiProjectionProcessor org.apache.rya.streams.kafka.processors.projection.MultiProjectionProcessorSupplier.MultiProjectionProcessor used on opensource projects

Example 1 with MultiProjectionProcessor

use of org.apache.rya.streams.kafka.processors.projection.MultiProjectionProcessorSupplier.MultiProjectionProcessor in project incubator-rya by apache.

the class MultiProjectionProcessorTest method showProjectionFunctionIsCalled.

@Test
public void showProjectionFunctionIsCalled() throws Exception {
    // The SPARQL that will define the projection.
    final MultiProjection multiProjection = RdfTestUtil.getMultiProjection("CONSTRUCT {" + "_:b a <urn:movementObservation> ; " + "<urn:location> ?location ; " + "<urn:direction> ?direction ; " + "}" + "WHERE {" + "?thing <urn:corner> ?location ." + "?thing <urn:compass> ?direction." + "}");
    // Create a Binding Set that contains the result of the WHERE clause.
    final ValueFactory vf = new ValueFactoryImpl();
    final MapBindingSet inputBs = new MapBindingSet();
    inputBs.addBinding("location", vf.createURI("urn:corner1"));
    inputBs.addBinding("direction", vf.createURI("urn:NW"));
    final VisibilityBindingSet inputVisBs = new VisibilityBindingSet(inputBs, "a|b");
    // Make the expected results.
    final Set<VisibilityBindingSet> expected = new HashSet<>();
    final String blankNodeId = UUID.randomUUID().toString();
    final BNode blankNode = vf.createBNode(blankNodeId);
    MapBindingSet expectedBs = new MapBindingSet();
    expectedBs.addBinding("subject", blankNode);
    expectedBs.addBinding("predicate", RDF.TYPE);
    expectedBs.addBinding("object", vf.createURI("urn:movementObservation"));
    expected.add(new VisibilityBindingSet(expectedBs, "a|b"));
    expectedBs = new MapBindingSet();
    expectedBs.addBinding("subject", blankNode);
    expectedBs.addBinding("predicate", vf.createURI("urn:direction"));
    expectedBs.addBinding("object", vf.createURI("urn:NW"));
    expected.add(new VisibilityBindingSet(expectedBs, "a|b"));
    expectedBs = new MapBindingSet();
    expectedBs.addBinding("subject", blankNode);
    expectedBs.addBinding("predicate", vf.createURI("urn:location"));
    expectedBs.addBinding("object", vf.createURI("urn:corner1"));
    expected.add(new VisibilityBindingSet(expectedBs, "a|b"));
    // Mock the processor context that will be invoked.
    final ProcessorContext context = mock(ProcessorContext.class);
    // Run the test.
    final MultiProjectionProcessor processor = new MultiProjectionProcessor(MultiProjectionEvaluator.make(multiProjection, () -> blankNodeId), result -> ProcessorResult.make(new UnaryResult(result)));
    processor.init(context);
    processor.process("key", ProcessorResult.make(new UnaryResult(inputVisBs)));
    final ArgumentCaptor<ProcessorResult> results = ArgumentCaptor.forClass(ProcessorResult.class);
    verify(context, times(3)).forward(any(), results.capture());
    final Set<VisibilityBindingSet> resultBindingSets = results.getAllValues().stream().map(result -> {
        return (result.getType() == ResultType.UNARY) ? result.getUnary().getResult() : result.getBinary().getResult();
    }).collect(Collectors.toSet());
    assertEquals(expected, resultBindingSets);
}