Examples with PropagationContextFactory org.drools.core.common.PropagationContextFactory used on opensource projects

Example 1 with PropagationContextFactory

use of org.drools.core.common.PropagationContextFactory in project drools by kiegroup.

the class ProtobufInputMarshaller method assertHandleIntoOTN.

private static void assertHandleIntoOTN(MarshallerReaderContext context, InternalWorkingMemory wm, InternalFactHandle handle, List<PropagationContext> pctxs) {
    Object object = handle.getObject();
    WorkingMemoryEntryPoint ep = handle.getEntryPoint();
    ObjectTypeConf typeConf = ep.getObjectTypeConfigurationRegistry().getObjectTypeConf(ep.getEntryPoint(), object);
    PropagationContextFactory pctxFactory = wm.getKnowledgeBase().getConfiguration().getComponentFactory().getPropagationContextFactory();
    PropagationContext propagationContext = pctxFactory.createPropagationContext(wm.getNextPropagationIdCounter(), PropagationContext.Type.INSERTION, null, null, handle, ep.getEntryPoint(), context);
    // keeping this list for a later cleanup is necessary because of the lazy propagations that might occur
    pctxs.add(propagationContext);
    ep.getEntryPointNode().assertObject(handle, propagationContext, typeConf, wm);
    wm.flushPropagations();
}

Example 2 with PropagationContextFactory

use of org.drools.core.common.PropagationContextFactory in project drools by kiegroup.

the class MVELConsequenceBuilderTest method testSimpleExpression.

@Test
public void testSimpleExpression() throws Exception {
    PackageDescr pkgDescr = new PackageDescr("pkg1");
    KnowledgeBuilderImpl pkgBuilder = new KnowledgeBuilderImpl();
    pkgBuilder.addPackage(pkgDescr);
    InternalKnowledgePackage pkg = pkgBuilder.getPackageRegistry("pkg1").getPackage();
    final RuleDescr ruleDescr = new RuleDescr("rule 1");
    ruleDescr.setNamespace("pkg1");
    ruleDescr.setConsequence("modify (cheese) {price = 5 };\nretract (cheese)");
    DialectCompiletimeRegistry dialectRegistry = pkgBuilder.getPackageRegistry(pkg.getName()).getDialectCompiletimeRegistry();
    MVELDialect mvelDialect = (MVELDialect) dialectRegistry.getDialect("mvel");
    final RuleBuildContext context = new RuleBuildContext(pkgBuilder, ruleDescr, dialectRegistry, pkg, mvelDialect);
    final InstrumentedDeclarationScopeResolver declarationResolver = new InstrumentedDeclarationScopeResolver();
    final ObjectType cheeseObjeectType = new ClassObjectType(Cheese.class);
    final Pattern pattern = new Pattern(0, cheeseObjeectType, "cheese");
    final GroupElement subrule = new GroupElement(GroupElement.AND);
    subrule.addChild(pattern);
    final Map<String, Declaration> map = new HashMap<String, Declaration>();
    map.put("cheese", pattern.getDeclaration());
    declarationResolver.setDeclarations(map);
    context.setDeclarationResolver(declarationResolver);
    final MVELConsequenceBuilder builder = new MVELConsequenceBuilder();
    builder.build(context, RuleImpl.DEFAULT_CONSEQUENCE_NAME);
    InternalKnowledgeBase kBase = KnowledgeBaseFactory.newKnowledgeBase();
    PropagationContextFactory pctxFactory = kBase.getConfiguration().getComponentFactory().getPropagationContextFactory();
    kBase.addPackage(pkg);
    StatefulKnowledgeSessionImpl ksession = (StatefulKnowledgeSessionImpl) kBase.newKieSession();
    final Cheese cheddar = new Cheese("cheddar", 10);
    final InternalFactHandle f0 = (InternalFactHandle) ksession.insert(cheddar);
    final LeftTupleImpl tuple = new LeftTupleImpl(f0, null, true);
    f0.removeLeftTuple(tuple);
    final AgendaItem item = new AgendaItemImpl(0, tuple, 10, pctxFactory.createPropagationContext(1, PropagationContext.Type.DELETION, null, tuple != null ? (TerminalNode) tuple.getTupleSink() : null, null), new RuleTerminalNode(0, new CompositeObjectSinkAdapterTest.MockBetaNode(), context.getRule(), subrule, 0, new BuildContext(kBase)), null);
    final DefaultKnowledgeHelper kbHelper = new DefaultKnowledgeHelper(ksession);
    kbHelper.setActivation(item);
    ((MVELConsequence) context.getRule().getConsequence()).compile((MVELDialectRuntimeData) pkgBuilder.getPackageRegistry(pkg.getName()).getDialectRuntimeRegistry().getDialectData("mvel"));
    context.getRule().getConsequence().evaluate(kbHelper, ksession);
    assertEquals(5, cheddar.getPrice());
}

Example 3 with PropagationContextFactory

use of org.drools.core.common.PropagationContextFactory in project drools by kiegroup.

the class AlphaNodeTest method testReturnValueConstraintAssertObject.

/*
     *  This just test AlphaNode With a different Constraint type.
     */
@Test
public void testReturnValueConstraintAssertObject() throws Exception {
    InternalKnowledgeBase kBase = (InternalKnowledgeBase) KnowledgeBaseFactory.newKnowledgeBase();
    BuildContext buildContext = new BuildContext(kBase);
    buildContext.setRule(new RuleImpl("test"));
    StatefulKnowledgeSessionImpl ksession = (StatefulKnowledgeSessionImpl) kBase.newKieSession();
    final RuleImpl rule = new RuleImpl("test-rule");
    PropagationContextFactory pctxFactory = kBase.getConfiguration().getComponentFactory().getPropagationContextFactory();
    final PropagationContext context = pctxFactory.createPropagationContext(0, PropagationContext.Type.INSERTION, null, null, null);
    final MockObjectSource source = new MockObjectSource(buildContext.getNextId());
    final InternalReadAccessor extractor = store.getReader(Cheese.class, "type");
    final FieldValue field = FieldFactory.getInstance().getFieldValue("cheddar");
    final MvelConstraint constraint = new MvelConstraintTestUtil("type == \"cheddar\"", field, extractor);
    final AlphaNode alphaNode = new AlphaNode(buildContext.getNextId(), constraint, source, buildContext);
    final MockObjectSink sink = new MockObjectSink();
    alphaNode.addObjectSink(sink);
    final Cheese cheddar = new Cheese("cheddar", 5);
    final DefaultFactHandle f0 = (DefaultFactHandle) ksession.insert(cheddar);
    assertLength(0, sink.getAsserted());
    // object should assert as it passes text
    alphaNode.assertObject(f0, context, ksession);
    assertLength(1, sink.getAsserted());
    final Object[] list = (Object[]) sink.getAsserted().get(0);
    assertSame(cheddar, ksession.getObject((DefaultFactHandle) list[0]));
    final Cheese stilton = new Cheese("stilton", 6);
    f0.setObject(stilton);
    sink.getAsserted().clear();
    // object should not assert as it does not pass text
    alphaNode.assertObject(f0, context, ksession);
    assertLength(0, sink.getAsserted());
}

Example 4 with PropagationContextFactory

use of org.drools.core.common.PropagationContextFactory in project drools by kiegroup.

the class AlphaNodeTest method testUpdateSinkWithoutMemory.

@Test
public void testUpdateSinkWithoutMemory() {
    // An AlphaNode should try and repropagate from its source
    InternalKnowledgeBase kBase = (InternalKnowledgeBase) KnowledgeBaseFactory.newKnowledgeBase();
    BuildContext buildContext = new BuildContext(kBase);
    buildContext.setRule(new RuleImpl("test"));
    StatefulKnowledgeSessionImpl ksession = (StatefulKnowledgeSessionImpl) kBase.newKieSession();
    final RuleImpl rule = new RuleImpl("test-rule");
    PropagationContextFactory pctxFactory = kBase.getConfiguration().getComponentFactory().getPropagationContextFactory();
    final PropagationContext context = pctxFactory.createPropagationContext(0, PropagationContext.Type.INSERTION, null, null, null);
    final MockObjectSource source = new MockObjectSource(buildContext.getNextId());
    final InternalReadAccessor extractor = store.getReader(Cheese.class, "type");
    final FieldValue field = FieldFactory.getInstance().getFieldValue("cheddar");
    final MvelConstraint constraint = new MvelConstraintTestUtil("type == \"cheddar\"", field, extractor);
    final AlphaNode alphaNode = new AlphaNode(buildContext.getNextId(), constraint, source, // no memory
    buildContext);
    alphaNode.attach(buildContext);
    final MockObjectSink sink1 = new MockObjectSink();
    alphaNode.addObjectSink(sink1);
    // Assert a single fact which should be in the AlphaNode memory and also
    // propagated to the
    // the tuple sink
    final Cheese cheese = new Cheese("cheddar", 0);
    final DefaultFactHandle handle1 = new DefaultFactHandle(1, cheese);
    // adding handle to the mock source
    source.addFact(handle1);
    alphaNode.assertObject(handle1, context, ksession);
    // Create a fact that should not be propagated, since the alpha node restriction will filter it out
    final Cheese stilton = new Cheese("stilton", 10);
    final DefaultFactHandle handle2 = new DefaultFactHandle(2, stilton);
    // adding handle to the mock source
    source.addFact(handle2);
    alphaNode.assertObject(handle2, context, ksession);
    assertLength(1, sink1.getAsserted());
    // Attach a new tuple sink
    final MockObjectSink sink2 = new MockObjectSink();
    // Tell the alphanode to update the new node. Make sure the first sink1
    // is not updated
    // likewise the source should not do anything
    alphaNode.updateSink(sink2, context, ksession);
    assertLength(1, sink1.getAsserted());
    assertLength(1, sink2.getAsserted());
    assertEquals(1, source.getUdated());
}

Example 5 with PropagationContextFactory

use of org.drools.core.common.PropagationContextFactory in project drools by kiegroup.

the class NodeSegmentUnlinkingTest method setUp.

public void setUp(int... type) {
    KieBaseConfiguration kconf = KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
    kBase = (InternalKnowledgeBase) KnowledgeBaseFactory.newKnowledgeBase(kconf);
    buildContext = new BuildContext(kBase);
    PropagationContextFactory pctxFactory = kBase.getConfiguration().getComponentFactory().getPropagationContextFactory();
    context = pctxFactory.createPropagationContext(0, PropagationContext.Type.INSERTION, null, null, null);
    MockTupleSource mockTupleSource = new MockTupleSource(9);
    rule1 = new RuleImpl("rule1");
    rule2 = new RuleImpl("rule2");
    rule3 = new RuleImpl("rule3");
    ObjectTypeNode otn = new ObjectTypeNode(3, null, new ClassObjectType(String.class), buildContext);
    liaNode = new LeftInputAdapterNode(4, otn, buildContext);
    // 3, 4, 5, 6 are in same shared segment
    n1 = createBetaNode(10, type[0], liaNode);
    n2 = createBetaNode(11, type[1], n1);
    RuleTerminalNode rtn1 = new RuleTerminalNode(18, n2, rule1, rule1.getLhs(), 0, buildContext);
    rtn1.attach(buildContext);
    n3 = createBetaNode(12, type[2], n1);
    n4 = createBetaNode(13, type[3], n3);
    n5 = createBetaNode(14, type[4], n4);
    n6 = createBetaNode(15, type[5], n5);
    RuleTerminalNode rtn2 = new RuleTerminalNode(19, n6, rule2, rule2.getLhs(), 0, buildContext);
    rtn2.attach(buildContext);
    n7 = createBetaNode(16, type[6], n6);
    n8 = createBetaNode(17, type[7], n7);
    RuleTerminalNode rtn3 = new RuleTerminalNode(20, n8, rule3, rule3.getLhs(), 0, buildContext);
    rtn3.attach(buildContext);
    // n1 -> n2 -> r1
    // \
    // n3 -> n4 -> n5 -> n6 -> r2
    // \
    // n7 -> n8 -> r3
    n1.addAssociation(rule1);
    n1.addAssociation(rule2);
    n1.addAssociation(rule3);
    n2.addAssociation(rule1);
    n2.addAssociation(rule2);
    n2.addAssociation(rule3);
    n3.addAssociation(rule2);
    n3.addAssociation(rule3);
    n4.addAssociation(rule2);
    n4.addAssociation(rule3);
    n5.addAssociation(rule2);
    n5.addAssociation(rule3);
    n6.addAssociation(rule2);
    n6.addAssociation(rule3);
    n7.addAssociation(rule3);
    n8.addAssociation(rule3);
}