Examples of org.drools.core.reteoo.LeftInputAdapterNode

org.drools.core.reteoo.LeftInputAdapterNode
All asserting Facts must propagated into the right ObjectSink side of a BetaNode, if this is the first Pattern then there are no BetaNodes to propagate to. LeftInputAdapter is used to adapt an ObjectSink propagation into a TupleSource which propagates a ReteTuple suitable fot the right ReteTuple side of a BetaNode.

    public void evaluateNetwork(PathMemory pmem, LinkedList<StackEntry> outerStack, RuleExecutor executor, InternalWorkingMemory wm) {
        SegmentMemory[] smems = pmem.getSegmentMemories();


        int smemIndex = 0;
        SegmentMemory smem = smems[smemIndex]; // 0
        LeftInputAdapterNode liaNode = (LeftInputAdapterNode) smem.getRootNode();


        Set<String> visitedRules;
        if (pmem.getNetworkNode().getType() == NodeTypeEnums.QueryTerminalNode) {
            visitedRules = new HashSet<String>();
        } else {
            visitedRules = Collections.emptySet();
        }


        LinkedList<StackEntry> stack = new LinkedList<StackEntry>();


        NetworkNode node;
        Memory nodeMem;
        long bit = 1;
        if (liaNode == smem.getTipNode()) {
            // segment only has liaNode in it
            // nothing is staged in the liaNode, so skip to next segment
            smem = smems[++smemIndex]; // 1
            node = smem.getRootNode();
            nodeMem = smem.getNodeMemories().getFirst();
        } else {
            // lia is in shared segment, so point to next node
            bit = 2;
            node = liaNode.getSinkPropagator().getFirstLeftTupleSink();
            nodeMem = smem.getNodeMemories().getFirst().getNext(); // skip the liaNode memory
        }


        LeftTupleSets srcTuples = smem.getStagedLeftTuples().takeAll(); // need to takeAll, as this is taken alpha network
        if (log.isTraceEnabled()) {

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        }


        @Override
        public void evauateAndFireRule() {
            SegmentMemory[] smems = pmem.getSegmentMemories();
            LeftInputAdapterNode lian = ( LeftInputAdapterNode ) smems[0].getRootNode();


            SegmentMemory sm = tm.getSegmentMemory();
            int smemIndex = 0;
            for (SegmentMemory smem : smems) {
                if (smem == sm) {

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        queryNodeMem.setQuerySegmentMemory(querySmem);
        queryNodeMem.setSegmentMemory(smem);
    }


    public static SegmentMemory getQuerySegmentMemory(InternalWorkingMemory wm, LeftTupleSource segmentRoot, QueryElementNode queryNode) {
        LeftInputAdapterNode liaNode = getQueryLiaNode(queryNode.getQueryElement().getQueryName(), getQueryOtn(segmentRoot));
        LiaNodeMemory liam = (LiaNodeMemory) wm.getNodeMemory((MemoryFactory) liaNode);
        SegmentMemory querySmem = liam.getSegmentMemory();
        if (querySmem == null) {
            querySmem = createSegmentMemory(liaNode, wm);
        }

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    public static ObjectTypeNode getQueryOtn(LeftTupleSource lts) {
        while (!(lts instanceof LeftInputAdapterNode)) {
            lts = lts.getLeftTupleSource();
        }


        LeftInputAdapterNode liaNode = (LeftInputAdapterNode) lts;
        ObjectSource os = liaNode.getObjectSource();
        while (!(os instanceof EntryPointNode)) {
            os = os.getParentObjectSource();
        }


        return ((EntryPointNode) os).getQueryNode();

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         if (removeTuples) {
            processLeftTuples(splitStartNode, sink, sm, wm, false);
         }


         RuleNetworkEvaluator rne = new RuleNetworkEvaluator();
         LeftInputAdapterNode lian = ( LeftInputAdapterNode ) smems[0].getRootNode();
         LinkedList<StackEntry> stack = new LinkedList<StackEntry>();
         LinkedList<StackEntry> outerStack = new LinkedList<StackEntry>();
         Set<String> visitedRules = new HashSet<String>();

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    private static void insertLiaFacts(LeftTupleSource startNode, InternalWorkingMemory wm) {
        // rule added with no sharing
        PropagationContextFactory pctxFactory =((InternalRuleBase)wm.getRuleBase()).getConfiguration().getComponentFactory().getPropagationContextFactory();
        final PropagationContext pctx = pctxFactory.createPropagationContext(wm.getNextPropagationIdCounter(), PropagationContext.RULE_ADDITION, null, null, null);
        LeftInputAdapterNode lian = (LeftInputAdapterNode) startNode;
        RightTupleSinkAdapter liaAdapter = new RightTupleSinkAdapter(lian);
        lian.getObjectSource().updateSink(liaAdapter, pctx, wm);
    }

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        }
        insertFacts( ( LeftTupleSink ) subLts, wm);
    }


    private static void deleteLiaFacts(LeftTupleSource startNode, InternalWorkingMemory wm) {
        LeftInputAdapterNode lian = ( LeftInputAdapterNode ) startNode;
        ObjectSource os = lian.getObjectSource();
        while (os.getType() != NodeTypeEnums.ObjectTypeNode) {
            os = os.getParentObjectSource();
        }
        ObjectTypeNode otn = (ObjectTypeNode) os;
        final ObjectTypeNodeMemory omem = (ObjectTypeNodeMemory) wm.getNodeMemory(otn);

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            node = node.getLeftTupleSource();
        }


        // No beta or from nodes, so must retrieve LeftTuples from the LiaNode.
        // This is done by scanning all the LeftTuples referenced from the FactHandles in the ObjectTypeNode
        LeftInputAdapterNode lian = (LeftInputAdapterNode) node;
        Memory memory = wm.getNodeMemory((MemoryFactory) node);
        if (memory.getSegmentMemory() == null) {
            // segment has never been initialized, which means the rule has never been linked.
            return;
        }


        ObjectSource os = lian.getObjectSource();
        while (os.getType() != NodeTypeEnums.ObjectTypeNode) {
            os = os.getParentObjectSource();
        }
        ObjectTypeNode otn = (ObjectTypeNode) os;
        final ObjectTypeNodeMemory omem = (ObjectTypeNodeMemory) wm.getNodeMemory(otn);
        Iterator it = omem.getObjectHashSet().iterator();
        LeftTupleSink firstLiaSink = lian.getSinkPropagator().getFirstLeftTupleSink();


        for (ObjectEntry entry = (ObjectEntry) it.next(); entry != null; entry = (ObjectEntry) it.next()) {
            InternalFactHandle fh = (InternalFactHandle) entry.getValue();
            if (fh.getFirstLeftTuple() != null ) {
                for (LeftTuple childLt = fh.getFirstLeftTuple(); childLt != null; childLt = childLt.getLeftParentNext()) {

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        QueryTerminalNode tnode = ( QueryTerminalNode )  tnodes[0];
        LeftTupleSource lts = tnode.getLeftTupleSource();
        while ( lts.getType() != NodeTypeEnums.LeftInputAdapterNode ) {
            lts = lts.getLeftTupleSource();
        }
        LeftInputAdapterNode lian = ( LeftInputAdapterNode ) lts;
        LiaNodeMemory lmem = (LiaNodeMemory) getNodeMemory( (MemoryFactory) lts);
        SegmentMemory lsmem = lmem.getSegmentMemory();
        if ( lsmem == null ) {
            lsmem = SegmentUtilities.createSegmentMemory(lts, this);
        }

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            this.lock.lock();


            final PropagationContext pCtx = pctxFactory.createPropagationContext(getNextPropagationIdCounter(), PropagationContext.INSERTION,
                                                                                 null, null, factHandle, getEntryPoint());


            LeftInputAdapterNode lian = ( LeftInputAdapterNode ) factHandle.getFirstLeftTuple().getLeftTupleSink().getLeftTupleSource();
            LiaNodeMemory lmem = (LiaNodeMemory) getNodeMemory( (MemoryFactory) lian);
            SegmentMemory lsmem = lmem.getSegmentMemory();


            LeftTuple childLeftTuple = factHandle.getFirstLeftTuple(); // there is only one, all other LTs are peers
            LeftInputAdapterNode.doDeleteObject( childLeftTuple, childLeftTuple.getPropagationContext(),  lsmem, this, lian, false, lmem );

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