Package org.drools.core.reteoo.AccumulateNode

Examples of org.drools.core.reteoo.AccumulateNode.AccumulateContext

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                        AccumulateMemory am = (AccumulateMemory) memory;
                        bm = am.getBetaMemory();
                        FastIterator it = bm.getLeftTupleMemory().fullFastIterator();
                        LeftTuple lt = ((BetaNode) node).getFirstLeftTuple(bm.getLeftTupleMemory(), it);
                        for (; lt != null; lt = (LeftTuple) it.next(lt)) {
                            AccumulateContext accctx = (AccumulateContext) lt.getObject();
                            collectFromPeers(accctx.getResultLeftTuple(), agendaItems, nodeSet, wm);
                        }
                    } else if ( NodeTypeEnums.ExistsNode == node.getType() ) {
                        bm = (BetaMemory) wm.getNodeMemory((MemoryFactory) node);
                        FastIterator it = bm.getRightTupleMemory().fullFastIterator(); // done off the RightTupleMemory, as exists only have unblocked tuples on the left side
                        RightTuple rt = ((BetaNode) node).getFirstRightTuple(bm.getRightTupleMemory(), it);
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    }

    private static void collectFromPeers(LeftTuple peer, List<AgendaItem> agendaItems, Set<RuleTerminalNode> nodeSet, InternalWorkingMemory wm) {
        while (peer != null) {
            if ( peer.getLeftTupleSink().getType() == NodeTypeEnums.AccumulateNode ) {
                AccumulateContext accctx = (AccumulateContext) peer.getObject();
                collectFromLeftInput(accctx.getResultLeftTuple(), agendaItems, nodeSet, wm);
            } else if ( peer.getFirstChild() != null ) {
                for (LeftTuple childLt = peer.getFirstChild(); childLt != null; childLt = childLt.getLeftParentNext()) {
                    collectFromLeftInput(childLt, agendaItems, nodeSet, wm);
                }
            } else if ( peer.getLeftTupleSink().getType() == NodeTypeEnums.RuleTerminalNode ) {
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                ltm.add(leftTuple);
            }

            PropagationContext context = leftTuple.getPropagationContext();

            AccumulateContext accresult = new AccumulateContext();


            leftTuple.setObject(accresult);

            accresult.context = accumulate.createContext();
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            FastIterator leftIt = accNode.getLeftIterator(ltm);

            for (LeftTuple leftTuple = accNode.getFirstLeftTuple(rightTuple, ltm, context, leftIt); leftTuple != null; leftTuple = (LeftTuple) leftIt.next(leftTuple)) {
                if (constraints.isAllowedCachedRight(contextEntry,
                                                     leftTuple)) {
                    final AccumulateContext accctx = (AccumulateContext) leftTuple.getObject();
                    addMatch(accNode,
                             accumulate,
                             leftTuple,
                             rightTuple,
                             null,
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        ContextEntry[] contextEntry = bm.getContext();
        BetaConstraints constraints = accNode.getRawConstraints();

        for (LeftTuple leftTuple = srcLeftTuples.getUpdateFirst(); leftTuple != null; ) {
            LeftTuple next = leftTuple.getStagedNext();
            final AccumulateContext accctx = (AccumulateContext) leftTuple.getObject();

            PropagationContext context = leftTuple.getPropagationContext();

            constraints.updateFromTuple(contextEntry,
                                        wm,
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                if (constraints.isAllowedCachedRight(bm.getContext(),
                                                     leftTuple)) {
                    if (leftTuple.getStagedType() == LeftTuple.NONE) {
                        trgLeftTuples.addUpdate(leftTuple);
                    }
                    final AccumulateContext accctx = (AccumulateContext) leftTuple.getObject();
                    // add a new match
                    addMatch(accNode,
                             accumulate,
                             leftTuple,
                             rightTuple,
                             null,
                             null,
                             wm,
                             am,
                             accctx,
                             true);
                }
            }
        } else {
            // in the same bucket, so iterate and compare
            for (; leftTuple != null; leftTuple = (LeftTuple) leftIt.next(leftTuple)) {
                if (constraints.isAllowedCachedRight(bm.getContext(),
                                                     leftTuple)) {
                    if (leftTuple.getStagedType() == LeftTuple.NONE) {
                        trgLeftTuples.addUpdate(leftTuple);
                    }
                    final AccumulateContext accctx = (AccumulateContext) leftTuple.getObject();
                    LeftTuple temp = null;
                    if (childLeftTuple != null && childLeftTuple.getLeftParent() == leftTuple) {
                        temp = childLeftTuple.getRightParentNext();
                        // we must re-add this to ensure deterministic iteration
                        childLeftTuple.reAddLeft();
                        removeMatch(accNode,
                                    accumulate,
                                    rightTuple,
                                    childLeftTuple,
                                    wm,
                                    am,
                                    accctx,
                                    true);
                        childLeftTuple = temp;
                    }
                    // add a new match
                    addMatch(accNode,
                             accumulate,
                             leftTuple,
                             rightTuple,
                             null,
                             childLeftTuple,
                             wm,
                             am,
                             accctx,
                             true);
                    if (temp != null) {
                        childLeftTuple = temp;
                    }
                } else if (childLeftTuple != null && childLeftTuple.getLeftParent() == leftTuple) {
                    if (leftTuple.getStagedType() == LeftTuple.NONE) {
                        trgLeftTuples.addUpdate(leftTuple);
                    }

                    LeftTuple temp = childLeftTuple.getRightParentNext();
                    final AccumulateContext accctx = (AccumulateContext) leftTuple.getObject();
                    // remove the match
                    removeMatch(accNode,
                                accumulate,
                                rightTuple,
                                childLeftTuple,
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            if (leftTuple.getMemory() != null) {
                // it may have been staged and never actually added
                ltm.remove(leftTuple);


                final AccumulateContext accctx = (AccumulateContext) leftTuple.getObject();
                leftTuple.setObject(null);

                removePreviousMatchesForLeftTuple(accNode,
                                                  accumulate,
                                                  leftTuple,
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                    while (match != null) {
                        LeftTuple nextLeft = match.getRightParentNext();

                        LeftTuple leftTuple = match.getLeftParent();
                        final AccumulateContext accctx = (AccumulateContext) leftTuple.getObject();
                        removeMatch(accNode, accumulate, rightTuple, match, wm, am, accctx, true);

                        if (leftTuple.getStagedType() == LeftTuple.NONE) {
                            trgLeftTuples.addUpdate(leftTuple);
                        }
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                                                          final LeftTupleSets trgLeftTuples) {
        for (LeftTuple match = firstChild; match != null; ) {
            final LeftTuple next = match.getRightParentNext();

            final LeftTuple leftTuple = match.getLeftParent();
            final AccumulateContext accctx = (AccumulateContext) leftTuple.getObject();
            removeMatch(accNode,
                        accumulate,
                        rightTuple,
                        match,
                        workingMemory,
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            case NodeTypeEnums.AccumulateNode: {
                // accumulate nodes generate new facts on-demand and need special procedures when de-serializing from persistent storage
                AccumulateMemory memory = (AccumulateMemory) context.wm.getNodeMemory( (BetaNode) sink );
                memory.betaMemory.getLeftTupleMemory().add( parentLeftTuple );

                AccumulateContext accctx = new AccumulateContext();
                parentLeftTuple.setObject( accctx );

                // first we de-serialize the generated fact handle
                InternalFactHandle handle = readFactHandle( context );
                accctx.result = new RightTuple( handle,
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Related Classes of org.drools.core.reteoo.AccumulateNode.AccumulateContext

  • org.drools.core.common.LeftTupleIterator
  • org.drools.core.common.PhreakActivationIterator
  • org.drools.core.marshalling.impl.InputMarshaller
  • org.drools.core.marshalling.impl.OutputMarshaller
  • org.drools.core.marshalling.impl.ProtobufOutputMarshaller
  • org.drools.core.phreak.AddRemoveRule
  • org.drools.core.phreak.PhreakAccumulateNode
  • org.drools.core.phreak.RuleNetworkEvaluator$PhreakAccumulateNode
  • org.drools.core.reteoo.ReteooWorkingMemory$EvaluateResultConstraints
  • org.drools.core.util.debug.AccumulateNodeVisitor
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