Package org.drools.core.rule

Examples of org.drools.core.rule.Accumulate

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                                                                       resultBetaConstraints,
                                                                       true );

        CollectAccumulator accumulator = new CollectAccumulator( collect,
                                                                 existSubNetwort );
        Accumulate accumulate = new SingleAccumulate( sourcePattern,
                                                      sourcePattern.getRequiredDeclarations(),
                                                      accumulator );

        AccumulateNode accNode = context.getComponentFactory().getNodeFactoryService().buildAccumulateNode( context.getNextId(),
                                                                                                            context.getTupleSource(),
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                                                      readLocalsFromTuple );
            }

            MVELDialectRuntimeData data = (MVELDialectRuntimeData) context.getPkg().getDialectRuntimeRegistry().getDialectData( "mvel" );

            Accumulate accumulate = null;
            if (accumDescr.isMultiFunction()) {
                accumulate = new MultiAccumulate( source,
                                                  null,
                                                  accumulators );
                int index = 0;
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        accDescr.setActionCode( "total += $cheese.price;" );
        accDescr.setReverseCode( "total -= $cheese.price;" );
        accDescr.setResultCode( "new Integer(total)" );

        final MVELAccumulateBuilder builder = new MVELAccumulateBuilder();
        final Accumulate acc = (Accumulate) builder.build( context,
                                                           accDescr );

        ((MVELCompileable) acc.getAccumulators()[0]).compile( (MVELDialectRuntimeData) pkgBuilder.getPackageRegistry( pkg.getName() ).getDialectRuntimeRegistry().getDialectData( "mvel" ) );

        InternalKnowledgeBase kBase = (InternalKnowledgeBase) KnowledgeBaseFactory.newKnowledgeBase();
        StatefulKnowledgeSessionImpl ksession = (StatefulKnowledgeSessionImpl)kBase.newStatefulKnowledgeSession();

        MockLeftTupleSink sink = new MockLeftTupleSink();
        final Cheese cheddar1 = new Cheese( "cheddar",
                                            10 );
        final Cheese cheddar2 = new Cheese( "cheddar",
                                            8 );
        final InternalFactHandle f0 = (InternalFactHandle) ksession.insert( new InitialFactImpl() );
        final InternalFactHandle f1 = (InternalFactHandle) ksession.insert( cheddar1 );
        final InternalFactHandle f2 = (InternalFactHandle) ksession.insert( cheddar2 );
        final LeftTupleImpl tuple = new LeftTupleImpl( f0,
                                               sink,
                                               true );

        Object wmContext = acc.createWorkingMemoryContext();
        Object accContext = acc.createContext();
        acc.init( wmContext,
                  accContext,
                  tuple,
                  ksession );

        acc.accumulate( wmContext,
                        accContext,
                        tuple,
                        f1,
                        ksession );
        acc.accumulate( wmContext,
                        accContext,
                        tuple,
                        f2,
                        ksession );

        assertEquals( new Integer( 18 ),
                      acc.getResult( wmContext,
                                     accContext,
                                     tuple,
                                     ksession ) );

        acc.reverse( wmContext,
                     accContext,
                     tuple,
                     f1,
                     ksession );

        assertEquals( new Integer( 8 ),
                      acc.getResult( wmContext,
                                     accContext,
                                     tuple,
                                     ksession ) );
    }
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                                                                       resultBetaConstraints,
                                                                       true );

        CollectAccumulator accumulator = new CollectAccumulator( collect,
                                                                 existSubNetwort );
        Accumulate accumulate = new Accumulate( sourcePattern,
                                                sourcePattern.getRequiredDeclarations(),
                                                new Accumulator[] { accumulator },
                                                false );

        AccumulateNode accNode = context.getComponentFactory().getNodeFactoryService().buildAccumulateNode( context.getNextId(),
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     * @inheritDoc
     */
    public void build(final BuildContext context,
                      final BuildUtils utils,
                      final RuleConditionElement rce) {
        final Accumulate accumulate = (Accumulate) rce;
        boolean existSubNetwort = false;
        context.pushRuleComponent( accumulate );

        final List resultBetaConstraints = context.getBetaconstraints();
        final List resultAlphaConstraints = context.getAlphaConstraints();

        RuleConditionElement source = accumulate.getSource();
        if( source instanceof GroupElement ) {
            GroupElement ge = (GroupElement) source;
            if( ge.isAnd() && ge.getChildren().size() == 1 ) {
                source = (RuleConditionElement) ge.getChildren().get( 0 );
            }
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        this.accumulator = new MockAccumulator();

        final ObjectType srcObjType = new ClassObjectType(String.class);
        final Pattern sourcePattern = new Pattern(0,
                                                  srcObjType);
        this.accumulate = new Accumulate(sourcePattern,
                                         new Declaration[0],
                                         new Accumulator[]{this.accumulator},
                                         false);

        this.node = new AccumulateNode(15,
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            Accumulator accumulator = new MVELAccumulatorFunctionExecutor( compilationUnit,
                                                                           accFunction );
            ((MVELCompileable) accumulator).compile( data );

            Accumulate accumulate = new Accumulate( sourcePattern,
                                                    new Declaration[]{}, // required declaration
                                                    new Accumulator[]{accumulator},
                                                    false );
            AccumulateNode accNode = new AccumulateNode( buildContext.getNextId(),
                                                         leftTupleSource,
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        if (srcLeftTuples.getInsertFirst() != null) {
            doLeftInserts(accNode, sink, am, wm, srcLeftTuples, tempLeftTuples);
        }

        Accumulate accumulate = accNode.getAccumulate();
        // we do not need collect retracts. RightTuple retracts end up as updates for lefttuples.
        // LeftTuple retracts are already on the trgLeftTuples
        for (LeftTuple leftTuple = tempLeftTuples.getInsertFirst(); leftTuple != null; ) {
            LeftTuple next = leftTuple.getStagedNext();
            evaluateResultConstraints(accNode, sink, accumulate, leftTuple, leftTuple.getPropagationContext(),
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                              AccumulateMemory am,
                              InternalWorkingMemory wm,
                              LeftTupleSets srcLeftTuples,
                              LeftTupleSets trgLeftTuples) {

        Accumulate accumulate = accNode.getAccumulate();
        BetaMemory bm = am.getBetaMemory();
        LeftTupleMemory ltm = bm.getLeftTupleMemory();
        RightTupleMemory rtm = bm.getRightTupleMemory();
        ContextEntry[] contextEntry = bm.getContext();
        BetaConstraints constraints = accNode.getRawConstraints();


        for (LeftTuple leftTuple = srcLeftTuples.getInsertFirst(); leftTuple != null; ) {
            LeftTuple next = leftTuple.getStagedNext();

            boolean useLeftMemory = RuleNetworkEvaluator.useLeftMemory(accNode, leftTuple);

            if (useLeftMemory) {
                ltm.add(leftTuple);
            }

            PropagationContext context = leftTuple.getPropagationContext();

            AccumulateContext accresult = new AccumulateContext();


            leftTuple.setObject(accresult);

            accresult.context = accumulate.createContext();

            accumulate.init(am.workingMemoryContext,
                            accresult.context,
                            leftTuple,
                            wm);

            constraints.updateFromTuple(contextEntry,
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                               LeftTupleSink sink,
                               AccumulateMemory am,
                               InternalWorkingMemory wm,
                               RightTupleSets srcRightTuples,
                               LeftTupleSets trgLeftTuples) {
        Accumulate accumulate = accNode.getAccumulate();

        BetaMemory bm = am.getBetaMemory();
        LeftTupleMemory ltm = bm.getLeftTupleMemory();
        RightTupleMemory rtm = bm.getRightTupleMemory();
        ContextEntry[] contextEntry = bm.getContext();
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Related Classes of org.drools.core.rule.Accumulate

  • org.drools.compiler.rule.builder.dialect.java.JavaAccumulateBuilder
  • org.drools.compiler.rule.builder.dialect.java.JavaAccumulateBuilderTest
  • org.drools.compiler.rule.builder.dialect.mvel.MVELAccumulateBuilder
  • org.drools.compiler.rule.builder.dialect.mvel.MVELAccumulateBuilderTest
  • org.drools.core.phreak.PhreakAccumulateNode
  • org.drools.core.phreak.RuleNetworkEvaluator$PhreakAccumulateNode
  • org.drools.core.reteoo.AccumulateNodeTest
  • org.drools.core.reteoo.builder.AccumulateBuilder
  • org.drools.core.reteoo.builder.CollectBuilder
  • org.drools.core.reteoo.test.dsl.AccumulateNodeStep
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