public static void writePropagationContexts(MarshallerWriteContext context) throws IOException {
ObjectOutputStream stream = context.stream;
if (context.terminalTupleMap != null && context.terminalTupleMap.size() > 0) {
Entry<LeftTuple, Integer>[] entries =
context.terminalTupleMap.entrySet().toArray(new Entry[context.terminalTupleMap.size()]);
Arrays.sort(entries, TupleSorter.instance);
// Map<LeftTuple, Integer> tuples = context.terminalTupleMap;
if (entries.length != 0) {
Map<Long, PropagationContext> pcMap = new HashMap<Long, PropagationContext>();
for (Entry<LeftTuple, Integer> entry : entries) {
LeftTuple leftTuple = entry.getKey();
if (leftTuple.getObject() != null) {
PropagationContext pc = ((Activation) leftTuple.getObject()).getPropagationContext();
if (!pcMap.containsKey(pc.getPropagationNumber())) {
stream.writeShort(PersisterEnums.PROPAGATION_CONTEXT);
writePropagationContext(context, pc);
pcMap.put(pc.getPropagationNumber(), pc);
}
}
}
}
}
stream.writeShort(PersisterEnums.END);
}
/**
* @inheritDoc As the accumulate node will always generate a resulting tuple, we must always
* destroy it
*/
public void retractLeftTuple(
final LeftTuple leftTuple,
final PropagationContext context,
final InternalWorkingMemory workingMemory) {
final AccumulateMemory memory = (AccumulateMemory) workingMemory.getNodeMemory(this);
if (leftTuple.getMemory().isStagingMemory()) {
leftTuple.getMemory().remove(leftTuple);
} else {
((BetaMemory) memory.getBetaMemory()).getLeftTupleMemory().remove(leftTuple);
}
leftTuple.setMemory(null);
final AccumulateContext accctx = (AccumulateContext) leftTuple.getObject();
if (accctx.getAction() != null) {
// there is a scheduled activation, we must cancel it
context.removeInsertAction(accctx.getAction());
}
leftTuple.setObject(null);
removePreviousMatchesForLeftTuple(leftTuple, workingMemory, memory, accctx);
if (accctx.propagated) {
// if tuple was previously propagated, retract it and destroy result fact handle
this.sink.propagateRetractLeftTupleDestroyRightTuple(leftTuple, context, workingMemory);
} else {
// if not propagated, just destroy the result fact handle
// workingMemory.getFactHandleFactory().destroyFactHandle( accctx.result.getFactHandle() );
}
}
public void rowUpdated(
final Rule rule,
final LeftTuple resultLeftTuple,
final PropagationContext context,
final InternalWorkingMemory workingMemory) {
RightTuple rightTuple = (RightTuple) resultLeftTuple.getObject();
if (rightTuple.getMemory() != null) {
// Already sheduled as an insert
return;
}
rightTuple.setLeftTuple(null);
resultLeftTuple.setObject(null);
// We need to recopy everything back again, as we don't know what has or hasn't changed
QueryTerminalNode node = (QueryTerminalNode) resultLeftTuple.getLeftTupleSink();
Declaration[] decls = node.getDeclarations();
InternalFactHandle rootHandle = resultLeftTuple.get(0);
DroolsQuery query = (DroolsQuery) rootHandle.getObject();
Object[] objects = new Object[query.getElements().length];
Declaration decl;
for (int i = 0, length = this.variables.length; i < length; i++) {
decl = decls[this.variables[i]];
objects[this.variables[i]] =
decl.getValue(workingMemory, resultLeftTuple.get(decl).getObject());
}
QueryElementFactHandle handle = (QueryElementFactHandle) rightTuple.getFactHandle();
handle.setRecency(workingMemory.getFactHandleFactory().getAtomicRecency().incrementAndGet());
handle.setObject(objects);
if (query.isOpen()) {
rightTuple.setLeftTuple(resultLeftTuple);
resultLeftTuple.setObject(rightTuple);
}
// Don't need to recreate child links, as they will already be there form the first "add"
RightTupleList rightTuples = query.getResultUpdateRightTupleList();
if (rightTuples == null) {
rightTuples = new RightTupleList();
query.setResultUpdateRightTupleList(rightTuples);
QueryResultUpdateAction updateAction =
new QueryResultUpdateAction(context, this.factHandle, leftTuple, this.node);
context.getQueue2().addFirst(updateAction);
}
rightTuples.add(rightTuple);
}
/**
* @inheritDoc When a new object is asserted into an AccumulateNode, do this:
* <p>1. Select all matching tuples from left memory 2. For each matching tuple, call a modify
* tuple
*/
public void assertRightTuple(
final RightTuple rightTuple,
final PropagationContext context,
final InternalWorkingMemory workingMemory) {
final AccumulateMemory memory = (AccumulateMemory) workingMemory.getNodeMemory(this);
memory.betaMemory.getRightTupleMemory().add(rightTuple);
if (memory.betaMemory.getLeftTupleMemory() == null
|| memory.betaMemory.getLeftTupleMemory().size() == 0) {
// do nothing here, as we know there are no left tuples at this stage in sequential mode or
// for a query.
// unless it's an "Open Query" and thus that will have left memory, so continue as normal
return;
}
this.constraints.updateFromFactHandle(
memory.betaMemory.getContext(), workingMemory, rightTuple.getFactHandle());
LeftTupleMemory leftMemory = memory.betaMemory.getLeftTupleMemory();
FastIterator leftIt = getLeftIterator(leftMemory);
for (LeftTuple leftTuple = getFirstLeftTuple(rightTuple, leftMemory, context, leftIt);
leftTuple != null;
leftTuple = (LeftTuple) leftIt.next(leftTuple)) {
if (this.constraints.isAllowedCachedRight(memory.betaMemory.getContext(), leftTuple)) {
final AccumulateContext accctx = (AccumulateContext) leftTuple.getObject();
addMatch(leftTuple, rightTuple, null, null, workingMemory, memory, accctx, true);
if (accctx.getAction() == null) {
// schedule a test to evaluate the constraints, this is an optimisation for sub networks
// We set Source to LEFT, even though this is a right propagation, because it might end up
// doing multiple right propagations anyway
EvaluateResultConstraints action =
new EvaluateResultConstraints(
ActivitySource.LEFT,
leftTuple,
context,
workingMemory,
memory,
accctx,
true,
this);
accctx.setAction(action);
context.addInsertAction(action);
}
}
}
this.constraints.resetFactHandle(memory.betaMemory.getContext());
}
public Object next() {
Activation acc = null;
if (this.currentLeftTuple != null) {
acc = (Activation) currentLeftTuple.getObject();
this.currentLeftTuple = (LeftTuple) leftTupleIter.next();
while (currentLeftTuple == null && (node = (TerminalNode) nodeIter.next()) != null) {
if (!(node instanceof RuleTerminalNode)) {
continue;
}
leftTupleIter = LeftTupleIterator.iterator(wm, node);
this.currentLeftTuple = (LeftTuple) leftTupleIter.next();
}
}
return acc;
}
private static ProtobufMessages.NodeMemory writeQueryElementNodeMemory(
final int nodeId, final Memory memory, final InternalWorkingMemory wm) {
LeftTupleIterator it = LeftTupleIterator.iterator(wm, ((QueryElementNodeMemory) memory).node);
ProtobufMessages.NodeMemory.QueryElementNodeMemory.Builder _query =
ProtobufMessages.NodeMemory.QueryElementNodeMemory.newBuilder();
for (LeftTuple leftTuple = (LeftTuple) it.next();
leftTuple != null;
leftTuple = (LeftTuple) it.next()) {
InternalFactHandle handle = (InternalFactHandle) leftTuple.getObject();
FactHandle _handle =
ProtobufMessages.FactHandle.newBuilder()
.setId(handle.getId())
.setRecency(handle.getRecency())
.build();
ProtobufMessages.NodeMemory.QueryElementNodeMemory.QueryContext.Builder _context =
ProtobufMessages.NodeMemory.QueryElementNodeMemory.QueryContext.newBuilder()
.setTuple(PersisterHelper.createTuple(leftTuple))
.setHandle(_handle);
LeftTuple childLeftTuple = leftTuple.getFirstChild();
while (childLeftTuple != null) {
RightTuple rightParent = childLeftTuple.getRightParent();
_context.addResult(
ProtobufMessages.FactHandle.newBuilder()
.setId(rightParent.getFactHandle().getId())
.setRecency(rightParent.getFactHandle().getRecency())
.build());
while (childLeftTuple != null && childLeftTuple.getRightParent() == rightParent) {
// skip to the next child that has a different right parent
childLeftTuple = childLeftTuple.getLeftParentNext();
}
}
_query.addContext(_context.build());
}
return _query.getContextCount() > 0
? ProtobufMessages.NodeMemory.newBuilder()
.setNodeId(nodeId)
.setNodeType(ProtobufMessages.NodeMemory.NodeType.QUERY_ELEMENT)
.setQueryElement(_query.build())
.build()
: null;
}
public void updateSink(
final LeftTupleSink sink,
final PropagationContext context,
final InternalWorkingMemory workingMemory) {
final AccumulateMemory memory = (AccumulateMemory) workingMemory.getNodeMemory(this);
final Iterator tupleIter = memory.betaMemory.getLeftTupleMemory().iterator();
for (LeftTuple leftTuple = (LeftTuple) tupleIter.next();
leftTuple != null;
leftTuple = (LeftTuple) tupleIter.next()) {
AccumulateContext accctx = (AccumulateContext) leftTuple.getObject();
if (accctx.propagated) {
// temporarily break the linked list to avoid wrong interactions
LeftTuple[] matchings = splitList(leftTuple, accctx, true);
sink.assertLeftTuple(
sink.createLeftTuple(leftTuple, accctx.result, null, null, sink, true),
context,
workingMemory);
restoreList(leftTuple, matchings);
}
}
}
public static void writeActivations(MarshallerWriteContext context) throws IOException {
ObjectOutputStream stream = context.stream;
Entry<LeftTuple, Integer>[] entries =
context.terminalTupleMap.entrySet().toArray(new Entry[context.terminalTupleMap.size()]);
Arrays.sort(entries, TupleSorter.instance);
// Map<LeftTuple, Integer> tuples = context.terminalTupleMap;
if (entries.length != 0) {
for (Entry<LeftTuple, Integer> entry : entries) {
if (entry.getKey().getObject() != null) {
LeftTuple leftTuple = entry.getKey();
stream.writeShort(PersisterEnums.ACTIVATION);
writeActivation(
context,
leftTuple,
(AgendaItem) leftTuple.getObject(),
(RuleTerminalNode) leftTuple.getLeftTupleSink());
}
}
}
stream.writeShort(PersisterEnums.END);
}
@SuppressWarnings("unchecked")
private static ProtobufMessages.NodeMemory writeFromNodeMemory(
final int nodeId, final Memory memory) {
FromMemory fromMemory = (FromMemory) memory;
if (fromMemory.betaMemory.getLeftTupleMemory().size() > 0) {
ProtobufMessages.NodeMemory.FromNodeMemory.Builder _from =
ProtobufMessages.NodeMemory.FromNodeMemory.newBuilder();
final org.drools.core.util.Iterator tupleIter =
fromMemory.betaMemory.getLeftTupleMemory().iterator();
for (LeftTuple leftTuple = (LeftTuple) tupleIter.next();
leftTuple != null;
leftTuple = (LeftTuple) tupleIter.next()) {
Map<Object, RightTuple> matches = (Map<Object, RightTuple>) leftTuple.getObject();
ProtobufMessages.NodeMemory.FromNodeMemory.FromContext.Builder _context =
ProtobufMessages.NodeMemory.FromNodeMemory.FromContext.newBuilder()
.setTuple(PersisterHelper.createTuple(leftTuple));
for (RightTuple rightTuple : matches.values()) {
FactHandle _handle =
ProtobufMessages.FactHandle.newBuilder()
.setId(rightTuple.getFactHandle().getId())
.setRecency(rightTuple.getFactHandle().getRecency())
.build();
_context.addHandle(_handle);
}
_from.addContext(_context.build());
}
return ProtobufMessages.NodeMemory.newBuilder()
.setNodeId(nodeId)
.setNodeType(ProtobufMessages.NodeMemory.NodeType.FROM)
.setFrom(_from.build())
.build();
}
return null;
}
private static ProtobufMessages.NodeMemory writeAccumulateNodeMemory(
final int nodeId, final Memory memory) {
// for accumulate nodes, we need to store the ID of created (result) handles
AccumulateMemory accmem = (AccumulateMemory) memory;
if (accmem.betaMemory.getLeftTupleMemory().size() > 0) {
ProtobufMessages.NodeMemory.AccumulateNodeMemory.Builder _accumulate =
ProtobufMessages.NodeMemory.AccumulateNodeMemory.newBuilder();
final org.drools.core.util.Iterator tupleIter =
accmem.betaMemory.getLeftTupleMemory().iterator();
for (LeftTuple leftTuple = (LeftTuple) tupleIter.next();
leftTuple != null;
leftTuple = (LeftTuple) tupleIter.next()) {
AccumulateContext accctx = (AccumulateContext) leftTuple.getObject();
if (accctx.result != null) {
FactHandle _handle =
ProtobufMessages.FactHandle.newBuilder()
.setId(accctx.result.getFactHandle().getId())
.setRecency(accctx.result.getFactHandle().getRecency())
.build();
_accumulate.addContext(
ProtobufMessages.NodeMemory.AccumulateNodeMemory.AccumulateContext.newBuilder()
.setTuple(PersisterHelper.createTuple(leftTuple))
.setResultHandle(_handle)
.build());
}
}
return ProtobufMessages.NodeMemory.newBuilder()
.setNodeId(nodeId)
.setNodeType(ProtobufMessages.NodeMemory.NodeType.ACCUMULATE)
.setAccumulate(_accumulate.build())
.build();
}
return null;
}
public void rowRemoved(
final Rule rule,
final LeftTuple resultLeftTuple,
final PropagationContext context,
final InternalWorkingMemory workingMemory) {
RightTuple rightTuple = (RightTuple) resultLeftTuple.getObject();
rightTuple.setLeftTuple(null);
resultLeftTuple.setObject(null);
DroolsQuery query = (DroolsQuery) this.factHandle.getObject();
RightTupleList rightTuples = query.getResultRetractRightTupleList();
if (rightTuples == null) {
rightTuples = new RightTupleList();
query.setResultRetractRightTupleList(rightTuples);
QueryResultRetractAction retractAction =
new QueryResultRetractAction(context, this.factHandle, leftTuple, this.node);
context.getQueue2().addFirst(retractAction);
}
if (rightTuple.getMemory() != null) {
throw new RuntimeException();
}
rightTuples.add(rightTuple);
}
private void removePreviousMatchesForRightTuple(
final RightTuple rightTuple,
final PropagationContext context,
final InternalWorkingMemory workingMemory,
final AccumulateMemory memory,
final LeftTuple firstChild) {
for (LeftTuple match = firstChild; match != null; ) {
final LeftTuple tmp = match.getRightParentNext();
final LeftTuple parent = match.getLeftParent();
final AccumulateContext accctx = (AccumulateContext) parent.getObject();
removeMatch(rightTuple, match, workingMemory, memory, accctx, true);
if (accctx.getAction() == null) {
// schedule a test to evaluate the constraints, this is an optimisation for sub networks
// We set Source to LEFT, even though this is a right propagation, because it might end up
// doing multiple right propagations anyway
EvaluateResultConstraints action =
new EvaluateResultConstraints(
ActivitySource.LEFT, parent, context, workingMemory, memory, accctx, true, this);
accctx.setAction(action);
context.addInsertAction(action);
}
match = tmp;
}
}
public static void writeLeftTuple(
LeftTuple leftTuple, MarshallerWriteContext context, boolean recurse) throws IOException {
ObjectOutputStream stream = context.stream;
InternalRuleBase ruleBase = context.ruleBase;
InternalWorkingMemory wm = context.wm;
LeftTupleSink sink = leftTuple.getLeftTupleSink();
switch (sink.getType()) {
case NodeTypeEnums.JoinNode:
{
// context.out.println( "JoinNode" );
for (LeftTuple childLeftTuple = leftTuple.getFirstChild();
childLeftTuple != null;
childLeftTuple = (LeftTuple) childLeftTuple.getLeftParentNext()) {
stream.writeShort(PersisterEnums.RIGHT_TUPLE);
int childSinkId = childLeftTuple.getLeftTupleSink().getId();
stream.writeInt(childSinkId);
stream.writeInt(childLeftTuple.getRightParent().getFactHandle().getId());
// context.out.println( "RightTuple int:" + childLeftTuple.getLeftTupleSink().getId() +
// " int:" + childLeftTuple.getRightParent().getFactHandle().getId() );
writeLeftTuple(childLeftTuple, context, recurse);
}
stream.writeShort(PersisterEnums.END);
// context.out.println( "JoinNode --- END" );
break;
}
case NodeTypeEnums.QueryRiaFixerNode:
case NodeTypeEnums.EvalConditionNode:
{
// context.out.println( ".... EvalConditionNode" );
for (LeftTuple childLeftTuple = leftTuple.getFirstChild();
childLeftTuple != null;
childLeftTuple = (LeftTuple) childLeftTuple.getLeftParentNext()) {
stream.writeShort(PersisterEnums.LEFT_TUPLE);
stream.writeInt(childLeftTuple.getLeftTupleSink().getId());
writeLeftTuple(childLeftTuple, context, recurse);
}
stream.writeShort(PersisterEnums.END);
// context.out.println( "---- EvalConditionNode --- END" );
break;
}
case NodeTypeEnums.NotNode:
case NodeTypeEnums.ForallNotNode:
{
if (leftTuple.getBlocker() == null) {
// is not blocked so has children
stream.writeShort(PersisterEnums.LEFT_TUPLE_NOT_BLOCKED);
for (LeftTuple childLeftTuple = leftTuple.getFirstChild();
childLeftTuple != null;
childLeftTuple = (LeftTuple) childLeftTuple.getLeftParentNext()) {
stream.writeShort(PersisterEnums.LEFT_TUPLE);
stream.writeInt(childLeftTuple.getLeftTupleSink().getId());
writeLeftTuple(childLeftTuple, context, recurse);
}
stream.writeShort(PersisterEnums.END);
} else {
stream.writeShort(PersisterEnums.LEFT_TUPLE_BLOCKED);
stream.writeInt(leftTuple.getBlocker().getFactHandle().getId());
}
break;
}
case NodeTypeEnums.ExistsNode:
{
if (leftTuple.getBlocker() == null) {
// is blocked so has children
stream.writeShort(PersisterEnums.LEFT_TUPLE_NOT_BLOCKED);
} else {
stream.writeShort(PersisterEnums.LEFT_TUPLE_BLOCKED);
stream.writeInt(leftTuple.getBlocker().getFactHandle().getId());
for (LeftTuple childLeftTuple = leftTuple.getFirstChild();
childLeftTuple != null;
childLeftTuple = (LeftTuple) childLeftTuple.getLeftParentNext()) {
stream.writeShort(PersisterEnums.LEFT_TUPLE);
stream.writeInt(childLeftTuple.getLeftTupleSink().getId());
writeLeftTuple(childLeftTuple, context, recurse);
}
stream.writeShort(PersisterEnums.END);
}
break;
}
case NodeTypeEnums.AccumulateNode:
{
// context.out.println( ".... AccumulateNode" );
// accumulate nodes generate new facts on-demand and need special procedures when
// serializing to persistent storage
AccumulateMemory memory = (AccumulateMemory) context.wm.getNodeMemory((BetaNode) sink);
AccumulateContext accctx = (AccumulateContext) leftTuple.getObject();
// first we serialize the generated fact handle
writeFactHandle(
context,
stream,
context.objectMarshallingStrategyStore,
accctx.result.getFactHandle());
// then we serialize the associated accumulation context
stream.writeObject(accctx.context);
// then we serialize the boolean propagated flag
stream.writeBoolean(accctx.propagated);
// then we serialize all the propagated tuples
for (LeftTuple childLeftTuple = leftTuple.getFirstChild();
childLeftTuple != null;
childLeftTuple = (LeftTuple) childLeftTuple.getLeftParentNext()) {
if (leftTuple.getLeftTupleSink().getId() == childLeftTuple.getLeftTupleSink().getId()) {
// this is a matching record, so, associate the right tuples
// context.out.println( "RightTuple(match) int:" +
// childLeftTuple.getLeftTupleSink().getId() + " int:" +
// childLeftTuple.getRightParent().getFactHandle().getId() );
stream.writeShort(PersisterEnums.RIGHT_TUPLE);
stream.writeInt(childLeftTuple.getRightParent().getFactHandle().getId());
} else {
// this is a propagation record
// context.out.println( "RightTuple(propagation) int:" +
// childLeftTuple.getLeftTupleSink().getId() + " int:" +
// childLeftTuple.getRightParent().getFactHandle().getId() );
stream.writeShort(PersisterEnums.LEFT_TUPLE);
int sinkId = childLeftTuple.getLeftTupleSink().getId();
stream.writeInt(sinkId);
writeLeftTuple(childLeftTuple, context, recurse);
}
}
stream.writeShort(PersisterEnums.END);
// context.out.println( "---- AccumulateNode --- END" );
break;
}
case NodeTypeEnums.RightInputAdaterNode:
{
// context.out.println( ".... RightInputAdapterNode" );
// RIANs generate new fact handles on-demand to wrap tuples and need special procedures
// when serializing to persistent storage
ObjectHashMap memory = (ObjectHashMap) context.wm.getNodeMemory((NodeMemory) sink);
InternalFactHandle ifh = (InternalFactHandle) memory.get(leftTuple);
// first we serialize the generated fact handle ID
// context.out.println( "FactHandle id:"+ifh.getId() );
stream.writeInt(ifh.getId());
stream.writeLong(ifh.getRecency());
writeRightTuples(ifh, context);
stream.writeShort(PersisterEnums.END);
// context.out.println( "---- RightInputAdapterNode --- END" );
break;
}
case NodeTypeEnums.FromNode:
{
// context.out.println( ".... FromNode" );
// FNs generate new fact handles on-demand to wrap objects and need special procedures
// when serializing to persistent storage
FromMemory memory = (FromMemory) context.wm.getNodeMemory((NodeMemory) sink);
Map<Object, RightTuple> matches = (Map<Object, RightTuple>) leftTuple.getObject();
for (RightTuple rightTuples : matches.values()) {
// first we serialize the generated fact handle ID
stream.writeShort(PersisterEnums.FACT_HANDLE);
writeFactHandle(
context,
stream,
context.objectMarshallingStrategyStore,
rightTuples.getFactHandle());
writeRightTuples(rightTuples.getFactHandle(), context);
}
stream.writeShort(PersisterEnums.END);
for (LeftTuple childLeftTuple = leftTuple.getFirstChild();
childLeftTuple != null;
childLeftTuple = (LeftTuple) childLeftTuple.getLeftParentNext()) {
stream.writeShort(PersisterEnums.RIGHT_TUPLE);
stream.writeInt(childLeftTuple.getLeftTupleSink().getId());
stream.writeInt(childLeftTuple.getRightParent().getFactHandle().getId());
// context.out.println( "RightTuple int:" + childLeftTuple.getLeftTupleSink().getId() +
// " int:" + childLeftTuple.getRightParent().getFactHandle().getId() );
writeLeftTuple(childLeftTuple, context, recurse);
}
stream.writeShort(PersisterEnums.END);
// context.out.println( "---- FromNode --- END" );
break;
}
case NodeTypeEnums.UnificationNode:
{
// context.out.println( ".... UnificationNode" );
QueryElementNode node = (QueryElementNode) sink;
boolean isOpen = node.isOpenQuery();
context.writeBoolean(isOpen);
if (isOpen) {
InternalFactHandle factHandle = (InternalFactHandle) leftTuple.getObject();
DroolsQuery query = (DroolsQuery) factHandle.getObject();
// context.out.println( "factHandle:" + factHandle );
factHandle.setObject(null);
writeFactHandle(context, stream, context.objectMarshallingStrategyStore, 0, factHandle);
factHandle.setObject(query);
writeLeftTuples(context, new InternalFactHandle[] {factHandle});
} else {
for (LeftTuple childLeftTuple = leftTuple.getFirstChild();
childLeftTuple != null;
childLeftTuple = (LeftTuple) childLeftTuple.getLeftParentNext()) {
stream.writeShort(PersisterEnums.LEFT_TUPLE);
stream.writeInt(childLeftTuple.getLeftTupleSink().getId());
InternalFactHandle factHandle = childLeftTuple.getLastHandle();
writeFactHandle(
context, stream, context.objectMarshallingStrategyStore, 1, factHandle);
writeLeftTuple(childLeftTuple, context, recurse);
}
stream.writeShort(PersisterEnums.END);
}
// context.out.println( "---- EvalConditionNode --- END" );
break;
}
case NodeTypeEnums.RuleTerminalNode:
{
// context.out.println( "RuleTerminalNode" );
int pos = context.terminalTupleMap.size();
context.terminalTupleMap.put(leftTuple, pos);
break;
}
case NodeTypeEnums.QueryTerminalNode:
{
// context.out.println( ".... QueryTerminalNode" );
// LeftTuple entry = leftTuple;
//
// // find the DroolsQuery object
// while ( entry.getParent() != null ) {
// entry = entry.getParent();
// }
//
// // Now output all the child tuples in the caller network
// DroolsQuery query = (DroolsQuery) entry.getLastHandle().getObject();
// if ( query.getQueryResultCollector() instanceof
// UnificationNodeViewChangedEventListener ) {
// context.writeBoolean( true );
// UnificationNodeViewChangedEventListener collector =
// (UnificationNodeViewChangedEventListener) query.getQueryResultCollector();
// leftTuple = collector.getLeftTuple();
//
context.writeBoolean(true);
RightTuple rightTuple = (RightTuple) leftTuple.getObject();
// context.out.println( "rightTuple:" + rightTuple.getFactHandle() );
writeFactHandle(
context,
stream,
context.objectMarshallingStrategyStore,
1,
rightTuple.getFactHandle());
for (LeftTuple childLeftTuple = rightTuple.firstChild;
childLeftTuple != null;
childLeftTuple = (LeftTuple) childLeftTuple.getRightParentNext()) {
stream.writeShort(PersisterEnums.LEFT_TUPLE);
stream.writeInt(childLeftTuple.getLeftTupleSink().getId());
writeLeftTuple(childLeftTuple, context, recurse);
}
// for ( LeftTuple childLeftTuple = leftTuple.getFirstChild();
// childLeftTuple != null; childLeftTuple = (LeftTuple) childLeftTuple.getLeftParentNext()
// ) {
// stream.writeShort( PersisterEnums.LEFT_TUPLE );
// stream.writeInt( childLeftTuple.getLeftTupleSink().getId() );
// writeFactHandle( context,
// stream,
// context.objectMarshallingStrategyStore,
// 1,
// childLeftTuple.getLastHandle() );
// writeLeftTuple( childLeftTuple,
// context,
// recurse );
// }
// } else {
// context.writeBoolean( false );
// }
stream.writeShort(PersisterEnums.END);
// context.out.println( "---- QueryTerminalNode --- END" );
break;
}
}
}
public void modifyLeftTuple(
LeftTuple leftTuple, PropagationContext context, InternalWorkingMemory workingMemory) {
boolean executeAsOpenQuery = openQuery;
if (executeAsOpenQuery) {
// There is no point in doing an open query if the caller is a non-open query.
Object object = ((InternalFactHandle) leftTuple.get(0)).getObject();
if (object instanceof DroolsQuery && !((DroolsQuery) object).isOpen()) {
executeAsOpenQuery = false;
}
}
if (!executeAsOpenQuery) {
// Was never open so execute as a retract + assert
if (leftTuple.getFirstChild() != null) {
this.sink.propagateRetractLeftTuple(leftTuple, context, workingMemory);
}
assertLeftTuple(leftTuple, context, workingMemory);
return;
}
InternalFactHandle handle = (InternalFactHandle) leftTuple.getObject();
DroolsQuery queryObject = (DroolsQuery) handle.getObject();
if (queryObject.getAction() != null) {
// we already have an insert scheduled for this query, but have re-entered it
// do nothing
return;
}
Object[] argTemplate =
this.queryElement.getArgTemplate(); // an array of declr, variable and literals
Object[] args =
new Object[argTemplate.length]; // the actual args, to be created from the template
// first copy everything, so that we get the literals. We will rewrite the declarations and
// variables next
System.arraycopy(argTemplate, 0, args, 0, args.length);
int[] declIndexes = this.queryElement.getDeclIndexes();
for (int i = 0, length = declIndexes.length; i < length; i++) {
Declaration declr = (Declaration) argTemplate[declIndexes[i]];
Object tupleObject = leftTuple.get(declr).getObject();
Object o;
if (tupleObject instanceof DroolsQuery) {
// If the query passed in a Variable, we need to use it
ArrayElementReader arrayReader = (ArrayElementReader) declr.getExtractor();
if (((DroolsQuery) tupleObject).getVariables()[arrayReader.getIndex()] != null) {
o = Variable.v;
} else {
o = declr.getValue(workingMemory, tupleObject);
}
} else {
o = declr.getValue(workingMemory, tupleObject);
}
args[declIndexes[i]] = o;
}
int[] varIndexes = this.queryElement.getVariableIndexes();
for (int i = 0, length = varIndexes.length; i < length; i++) {
if (argTemplate[varIndexes[i]] == Variable.v) {
// Need to check against the arg template, as the varIndexes also includes re-declared
// declarations
args[varIndexes[i]] = Variable.v;
}
}
queryObject.setParameters(args);
((UnificationNodeViewChangedEventListener) queryObject.getQueryResultCollector())
.setVariables(varIndexes);
QueryUpdateAction action = new QueryUpdateAction(context, handle, leftTuple, this);
context.getQueue1().addFirst(action);
}
public void modifyRightTuple(
RightTuple rightTuple, PropagationContext context, InternalWorkingMemory workingMemory) {
final AccumulateMemory memory = (AccumulateMemory) workingMemory.getNodeMemory(this);
BetaMemory bm = memory.betaMemory;
// Add and remove to make sure we are in the right bucket and at the end
// this is needed to fix for indexing and deterministic iteration
bm.getRightTupleMemory().removeAdd(rightTuple);
if (bm.getLeftTupleMemory() == null || bm.getLeftTupleMemory().size() == 0) {
// do nothing here, as we know there are no left tuples at this stage in sequential mode.
return;
}
LeftTuple childLeftTuple = rightTuple.firstChild;
LeftTupleMemory leftMemory = bm.getLeftTupleMemory();
FastIterator leftIt = getLeftIterator(leftMemory);
LeftTuple leftTuple = getFirstLeftTuple(rightTuple, leftMemory, context, leftIt);
this.constraints.updateFromFactHandle(
bm.getContext(), workingMemory, rightTuple.getFactHandle());
// first check our index (for indexed nodes only) hasn't changed and we are returning the same
// bucket
// We assume a bucket change if leftTuple == null
if (childLeftTuple != null
&& leftMemory.isIndexed()
&& !leftIt.isFullIterator()
&& (leftTuple == null
|| (leftTuple.getMemory() != childLeftTuple.getLeftParent().getMemory()))) {
// our index has changed, so delete all the previous matches
removePreviousMatchesForRightTuple(
rightTuple, context, workingMemory, memory, childLeftTuple);
childLeftTuple = null; // null so the next check will attempt matches for new bucket
}
// if LeftTupleMemory is empty, there are no matches to modify
if (leftTuple != null) {
if (childLeftTuple == null) {
// either we are indexed and changed buckets or
// we had no children before, but there is a bucket to potentially match, so try as normal
// assert
for (; leftTuple != null; leftTuple = (LeftTuple) leftIt.next(leftTuple)) {
if (this.constraints.isAllowedCachedRight(bm.getContext(), leftTuple)) {
final AccumulateContext accctx = (AccumulateContext) leftTuple.getObject();
// add a new match
addMatch(leftTuple, rightTuple, null, null, workingMemory, memory, accctx, true);
if (accctx.getAction() == null) {
// schedule a test to evaluate the constraints, this is an optimisation for sub
// networks
// We set Source to LEFT, even though this is a right propagation, because it might
// end up
// doing multiple right propagations anyway
EvaluateResultConstraints action =
new EvaluateResultConstraints(
ActivitySource.LEFT,
leftTuple,
context,
workingMemory,
memory,
accctx,
true,
this);
accctx.setAction(action);
context.addInsertAction(action);
}
}
}
} else {
// in the same bucket, so iterate and compare
for (; leftTuple != null; leftTuple = (LeftTuple) leftIt.next(leftTuple)) {
if (this.constraints.isAllowedCachedRight(bm.getContext(), 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(rightTuple, childLeftTuple, workingMemory, memory, accctx, true);
childLeftTuple = temp;
}
// add a new match
addMatch(
leftTuple, rightTuple, null, childLeftTuple, workingMemory, memory, accctx, true);
if (temp != null) {
childLeftTuple = temp;
}
if (accctx.getAction() == null) {
// schedule a test to evaluate the constraints, this is an optimisation for sub
// networks
// We set Source to LEFT, even though this is a right propagation, because it might
// end up
// doing multiple right propagations anyway
EvaluateResultConstraints action =
new EvaluateResultConstraints(
ActivitySource.LEFT,
leftTuple,
context,
workingMemory,
memory,
accctx,
true,
this);
accctx.setAction(action);
context.addInsertAction(action);
}
} else if (childLeftTuple != null && childLeftTuple.getLeftParent() == leftTuple) {
LeftTuple temp = childLeftTuple.getRightParentNext();
final AccumulateContext accctx = (AccumulateContext) leftTuple.getObject();
// remove the match
removeMatch(rightTuple, childLeftTuple, workingMemory, memory, accctx, true);
if (accctx.getAction() == null) {
// schedule a test to evaluate the constraints, this is an optimisation for sub
// networks
// We set Source to LEFT, even though this is a right propagation, because it might
// end up
// doing multiple right propagations anyway
EvaluateResultConstraints action =
new EvaluateResultConstraints(
ActivitySource.LEFT,
leftTuple,
context,
workingMemory,
memory,
accctx,
true,
this);
accctx.setAction(action);
context.addInsertAction(action);
}
childLeftTuple = temp;
}
// else do nothing, was false before and false now.
}
}
}
this.constraints.resetFactHandle(bm.getContext());
}
public void modifyLeftTuple(
LeftTuple leftTuple, PropagationContext context, InternalWorkingMemory workingMemory) {
final AccumulateMemory memory = (AccumulateMemory) workingMemory.getNodeMemory(this);
final AccumulateContext accctx = (AccumulateContext) leftTuple.getObject();
BetaMemory bm = memory.betaMemory;
// Add and remove to make sure we are in the right bucket and at the end
// this is needed to fix for indexing and deterministic iteration
bm.getLeftTupleMemory().removeAdd(leftTuple);
this.constraints.updateFromTuple(bm.getContext(), workingMemory, leftTuple);
LeftTuple childLeftTuple = getFirstMatch(leftTuple, accctx, false);
RightTupleMemory rightMemory = bm.getRightTupleMemory();
FastIterator rightIt = getRightIterator(rightMemory);
RightTuple rightTuple = getFirstRightTuple(leftTuple, rightMemory, context, rightIt);
// first check our index (for indexed nodes only) hasn't changed and we are returning the same
// bucket
// if rightTuple is null, we assume there was a bucket change and that bucket is empty
if (childLeftTuple != null
&& rightMemory.isIndexed()
&& !rightIt.isFullIterator()
&& (rightTuple == null
|| (rightTuple.getMemory() != childLeftTuple.getRightParent().getMemory()))) {
// our index has changed, so delete all the previous matchings
removePreviousMatchesForLeftTuple(leftTuple, workingMemory, memory, accctx);
childLeftTuple = null; // null so the next check will attempt matches for new bucket
}
// we can't do anything if RightTupleMemory is empty
if (rightTuple != null) {
if (childLeftTuple == null) {
// either we are indexed and changed buckets or
// we had no children before, but there is a bucket to potentially match, so try as normal
// assert
for (; rightTuple != null; rightTuple = (RightTuple) rightIt.next(rightTuple)) {
final InternalFactHandle handle = rightTuple.getFactHandle();
if (this.constraints.isAllowedCachedLeft(bm.getContext(), handle)) {
// add a new match
addMatch(leftTuple, rightTuple, null, null, workingMemory, memory, accctx, true);
}
}
} else {
boolean isDirty = false;
// in the same bucket, so iterate and compare
for (; rightTuple != null; rightTuple = (RightTuple) rightIt.next(rightTuple)) {
final InternalFactHandle handle = rightTuple.getFactHandle();
if (this.constraints.isAllowedCachedLeft(bm.getContext(), handle)) {
if (childLeftTuple == null || childLeftTuple.getRightParent() != rightTuple) {
// add a new match
addMatch(
leftTuple, rightTuple, childLeftTuple, null, workingMemory, memory, accctx, true);
} else {
// we must re-add this to ensure deterministic iteration
LeftTuple temp = childLeftTuple.getLeftParentNext();
childLeftTuple.reAddRight();
childLeftTuple = temp;
}
} else if (childLeftTuple != null && childLeftTuple.getRightParent() == rightTuple) {
LeftTuple temp = childLeftTuple.getLeftParentNext();
// remove the match
removeMatch(rightTuple, childLeftTuple, workingMemory, memory, accctx, false);
childLeftTuple = temp;
// the next line means that when a match is removed from the current leftTuple
// and the accumulate does not support the reverse operation, then the whole
// result is dirty (since removeMatch above is not recalculating the total)
// and we need to do this later
isDirty = !accumulate.supportsReverse();
}
// else do nothing, was false before and false now.
}
if (isDirty) {
reaccumulateForLeftTuple(leftTuple, workingMemory, memory, accctx);
}
}
}
this.constraints.resetTuple(memory.betaMemory.getContext());
if (accctx.getAction() == null) {
evaluateResultConstraints(
ActivitySource.LEFT, leftTuple, context, workingMemory, memory, accctx, true);
} // else evaluation is already scheduled, so do nothing
}
