/**
* Retract the <code>FactHandleimpl</code> from the <code>Rete</code> network. Also remove the
* <code>FactHandleImpl</code> from the node memory.
*
* @param rightTuple The fact handle.
* @param object The object to assert.
* @param workingMemory The working memory session.
*/
public void retractObject(
final InternalFactHandle factHandle,
final PropagationContext context,
final InternalWorkingMemory workingMemory) {
if (context.getType() == PropagationContext.MODIFICATION
&& this.skipOnModify
&& context.getDormantActivations() == 0) {
return;
}
if (this.objectMemoryEnabled) {
final ObjectHashSet memory = (ObjectHashSet) workingMemory.getNodeMemory(this);
memory.remove(factHandle);
}
for (RightTuple rightTuple = factHandle.getRightTuple();
rightTuple != null;
rightTuple = (RightTuple) rightTuple.getHandleNext()) {
rightTuple.getRightTupleSink().retractRightTuple(rightTuple, context, workingMemory);
}
factHandle.setRightTuple(null);
for (LeftTuple leftTuple = factHandle.getLeftTuple();
leftTuple != null;
leftTuple = (LeftTuple) leftTuple.getLeftParentNext()) {
leftTuple.getLeftTupleSink().retractLeftTuple(leftTuple, context, workingMemory);
}
factHandle.setLeftTuple(null);
}
public static void writeLeftTuples(
MarshallerWriteContext context, InternalFactHandle[] factHandles) throws IOException {
ObjectOutputStream stream = context.stream;
InternalWorkingMemory wm = context.wm;
// Write out LeftTuples
// context.out.println( "LeftTuples Start" );
for (InternalFactHandle handle : factHandles) {
// InternalFactHandle handle = (InternalFactHandle) it.next();
for (LeftTuple leftTuple = handle.getFirstLeftTuple();
leftTuple != null;
leftTuple = (LeftTuple) leftTuple.getLeftParentNext()) {
stream.writeShort(PersisterEnums.LEFT_TUPLE);
int sinkId = leftTuple.getLeftTupleSink().getId();
stream.writeInt(sinkId);
stream.writeInt(handle.getId());
// context.out.println( "LeftTuple sinkId:" + leftTuple.getLeftTupleSink().getId() + "
// handleId:" + handle.getId() );
writeLeftTuple(leftTuple, context, true);
}
}
stream.writeShort(PersisterEnums.END);
// context.out.println( "LeftTuples End" );
}
/**
* OTN needs to override remove to avoid releasing the node ID, since OTN are never removed from
* the rulebase in the current implementation
*/
protected void doRemove(
final RuleRemovalContext context,
final ReteooBuilder builder,
final BaseNode node,
final InternalWorkingMemory[] workingMemories) {
if (context.getCleanupAdapter() != null) {
for (InternalWorkingMemory workingMemory : workingMemories) {
CleanupAdapter adapter = context.getCleanupAdapter();
final ObjectHashSet memory = (ObjectHashSet) workingMemory.getNodeMemory(this);
Iterator it = memory.iterator();
for (ObjectEntry entry = (ObjectEntry) it.next();
entry != null;
entry = (ObjectEntry) it.next()) {
InternalFactHandle handle = (InternalFactHandle) entry.getValue();
for (LeftTuple leftTuple = handle.getFirstLeftTuple();
leftTuple != null;
leftTuple = leftTuple.getLeftParentNext()) {
adapter.cleanUp(leftTuple, workingMemory);
}
}
}
context.setCleanupAdapter(null);
}
if (!node.isInUse()) {
removeObjectSink((ObjectSink) node);
}
}
public void propagateModifyChildLeftTuple(
LeftTuple leftTuple,
PropagationContext context,
InternalWorkingMemory workingMemory,
boolean tupleMemoryEnabled) {
for (LeftTuple childLeftTuple = leftTuple.getFirstChild();
childLeftTuple != null;
childLeftTuple = (LeftTuple) childLeftTuple.getLeftParentNext()) {
childLeftTuple.getLeftTupleSink().modifyLeftTuple(childLeftTuple, context, workingMemory);
}
}
public void propagateRetractLeftTuple(
final LeftTuple leftTuple,
final PropagationContext context,
final InternalWorkingMemory workingMemory) {
LeftTuple child = leftTuple.getFirstChild();
while (child != null) {
LeftTuple temp = child.getLeftParentNext();
doPropagateRetractLeftTuple(context, workingMemory, child, child.getLeftTupleSink());
child.unlinkFromRightParent();
child.unlinkFromLeftParent();
child = temp;
}
}
public void propagateRetractLeftTupleDestroyRightTuple(
final LeftTuple leftTuple,
final PropagationContext context,
final InternalWorkingMemory workingMemory) {
LeftTuple child = leftTuple.getFirstChild();
InternalFactHandle rightParent = child.getRightParent().getFactHandle();
while (child != null) {
LeftTuple temp = child.getLeftParentNext();
doPropagateRetractLeftTuple(context, workingMemory, child, child.getLeftTupleSink());
child.unlinkFromRightParent();
child.unlinkFromLeftParent();
child = temp;
}
workingMemory.getFactHandleFactory().destroyFactHandle(rightParent);
}
/**
* Skips the propagated tuple handles and return the first handle in the list that correspond to a
* match
*
* @param leftTuple
* @param accctx
* @return
*/
private LeftTuple getFirstMatch(
final LeftTuple leftTuple, final AccumulateContext accctx, final boolean isUpdatingSink) {
// unlink all right matches
LeftTuple child = leftTuple.getFirstChild();
if (accctx.propagated) {
// To do that, we need to skip the first N children that are in fact
// the propagated tuples
int target = isUpdatingSink ? this.sink.size() - 1 : this.sink.size();
for (int i = 0; i < target; i++) {
child = child.getLeftParentNext();
}
}
return child;
}
private void removePreviousMatchesForLeftTuple(
final LeftTuple leftTuple,
final InternalWorkingMemory workingMemory,
final AccumulateMemory memory,
final AccumulateContext accctx) {
// so we just split the list keeping the head
LeftTuple[] matchings = splitList(leftTuple, accctx, false);
for (LeftTuple match = matchings[0]; match != null; match = match.getLeftParentNext()) {
// can't unlink from the left parent as it was already unlinked during the splitList call
// above
match.unlinkFromRightParent();
}
// since there are no more matches, the following call will just re-initialize the accumulation
this.accumulate.init(memory.workingMemoryContext, accctx.context, leftTuple, workingMemory);
}
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 static void writeInitialFactHandleLeftTuples(MarshallerWriteContext context)
throws IOException {
ObjectOutputStream stream = context.stream;
// context.out.println( "InitialFact LeftTuples Start" );
InternalFactHandle handle = context.wm.getInitialFactHandle();
for (LeftTuple leftTuple = handle.getFirstLeftTuple();
leftTuple != null;
leftTuple = (LeftTuple) leftTuple.getLeftParentNext()) {
stream.writeShort(PersisterEnums.LEFT_TUPLE);
stream.writeInt(leftTuple.getLeftTupleSink().getId());
// context.out.println( "LeftTuple sinkId:" + leftTuple.getLeftTupleSink().getId() );
writeLeftTuple(leftTuple, context, true);
}
stream.writeShort(PersisterEnums.END);
// context.out.println( "InitialFact LeftTuples End" );
}
public LeftTuple propagateRetractChildLeftTuple(
LeftTuple childLeftTuple,
RightTuple parentRightTuple,
PropagationContext context,
InternalWorkingMemory workingMemory) {
// iterate to find all child tuples for the shared node
while (childLeftTuple != null && childLeftTuple.getRightParent() == parentRightTuple) {
// this will iterate for each child node when the
// the current node is shared
LeftTuple temp = childLeftTuple.getLeftParentNext();
doPropagateRetractLeftTuple(
context, workingMemory, childLeftTuple, childLeftTuple.getLeftTupleSink());
childLeftTuple.unlinkFromRightParent();
childLeftTuple.unlinkFromLeftParent();
childLeftTuple = temp;
}
return childLeftTuple;
}
public LeftTuple propagateModifyChildLeftTuple(
LeftTuple childLeftTuple,
RightTuple parentRightTuple,
PropagationContext context,
InternalWorkingMemory workingMemory,
boolean tupleMemoryEnabled) {
// iterate to find all child tuples for the shared node
while (childLeftTuple != null && childLeftTuple.getRightParent() == parentRightTuple) {
// this will iterate for each child node when the
// the current node is shared
// preserve the current LeftTuple, as we need to iterate to the next before re-adding
LeftTuple temp = childLeftTuple;
childLeftTuple.getLeftTupleSink().modifyLeftTuple(childLeftTuple, context, workingMemory);
childLeftTuple = childLeftTuple.getLeftParentNext();
temp.reAddRight();
}
return childLeftTuple;
}
private void reaccumulateForLeftTuple(
final LeftTuple leftTuple,
final InternalWorkingMemory workingMemory,
final AccumulateMemory memory,
final AccumulateContext accctx) {
this.accumulate.init(memory.workingMemoryContext, accctx.context, leftTuple, workingMemory);
for (LeftTuple childMatch = getFirstMatch(leftTuple, accctx, false);
childMatch != null;
childMatch = childMatch.getLeftParentNext()) {
InternalFactHandle childHandle = childMatch.getRightParent().getFactHandle();
LeftTuple tuple = leftTuple;
if (this.unwrapRightObject) {
tuple = (LeftTuple) childHandle.getObject();
childHandle = tuple.getLastHandle();
}
this.accumulate.accumulate(
memory.workingMemoryContext, accctx.context, tuple, childHandle, workingMemory);
}
}
/** Retracts the corresponding tuple by retrieving and retracting the fact created for it */
public void retractLeftTuple(
final LeftTuple tuple,
final PropagationContext context,
final InternalWorkingMemory workingMemory) {
final ObjectHashMap memory = (ObjectHashMap) workingMemory.getNodeMemory(this);
// retrieve handle from memory
final InternalFactHandle factHandle = (InternalFactHandle) memory.remove(tuple);
for (RightTuple rightTuple = factHandle.getFirstRightTuple();
rightTuple != null;
rightTuple = (RightTuple) rightTuple.getHandleNext()) {
rightTuple.getRightTupleSink().retractRightTuple(rightTuple, context, workingMemory);
}
factHandle.clearRightTuples();
for (LeftTuple leftTuple = factHandle.getLastLeftTuple();
leftTuple != null;
leftTuple = (LeftTuple) leftTuple.getLeftParentNext()) {
leftTuple.getLeftTupleSink().retractLeftTuple(leftTuple, context, workingMemory);
}
factHandle.clearLeftTuples();
}
/**
* Retract the <code>FactHandleimpl</code> from the <code>Rete</code> network. Also remove the
* <code>FactHandleImpl</code> from the node memory.
*
* @param rightTuple The fact handle.
* @param object The object to assert.
* @param workingMemory The working memory session.
*/
public void retractObject(
final InternalFactHandle factHandle,
final PropagationContext context,
final InternalWorkingMemory workingMemory) {
if (objectMemoryEnabled && !(queryNode && !((DroolsQuery) factHandle.getObject()).isOpen())) {
final ObjectHashSet memory = (ObjectHashSet) workingMemory.getNodeMemory(this);
memory.remove(factHandle);
}
for (RightTuple rightTuple = factHandle.getFirstRightTuple();
rightTuple != null;
rightTuple = (RightTuple) rightTuple.getHandleNext()) {
rightTuple.getRightTupleSink().retractRightTuple(rightTuple, context, workingMemory);
}
factHandle.clearRightTuples();
for (LeftTuple leftTuple = factHandle.getFirstLeftTuple();
leftTuple != null;
leftTuple = (LeftTuple) leftTuple.getLeftParentNext()) {
leftTuple.getLeftTupleSink().retractLeftTuple(leftTuple, context, workingMemory);
}
factHandle.clearLeftTuples();
}
public void updateSink(
final LeftTupleSink sink,
final PropagationContext context,
final InternalWorkingMemory workingMemory) {
LeftTupleIterator it = LeftTupleIterator.iterator(workingMemory, this);
for (LeftTuple leftTuple = (LeftTuple) it.next();
leftTuple != null;
leftTuple = (LeftTuple) it.next()) {
LeftTuple childLeftTuple = leftTuple.getFirstChild();
while (childLeftTuple != null) {
RightTuple rightParent = childLeftTuple.getRightParent();
sink.assertLeftTuple(
sink.createLeftTuple(leftTuple, rightParent, childLeftTuple, null, sink, true),
context,
workingMemory);
while (childLeftTuple != null && childLeftTuple.getRightParent() == rightParent) {
// skip to the next child that has a different right parent
childLeftTuple = childLeftTuple.getLeftParentNext();
}
}
}
}
@Test
public void testDynamicAddRule() {
// DROOLS-17
String str =
"import org.drools.integrationtests.MiscTest2.A\n"
+ "rule r1 when\n"
+ " $a : A( f1 == 1 )\n"
+ "then\n"
+ "end\n"
+ "\n"
+ "rule r2 when\n"
+ " $a : A( f2 == 1 )\n"
+ "then\n"
+ "end\n"
+ "\n"
+ "rule r3 when\n"
+ " $a : A( f3 == 1 )"
+ "then\n"
+ "end";
String str2 =
"import org.drools.integrationtests.MiscTest2.A\n"
+ "rule r4 when\n"
+ " $a : A( f2 == 1, f4 == 1 )"
+ "then\n"
+ "end";
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add(ResourceFactory.newByteArrayResource(str.getBytes()), ResourceType.DRL);
if (kbuilder.hasErrors()) {
fail(kbuilder.getErrors().toString());
}
KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();
FactHandle fh = ksession.insert(new A(1, 1, 1, 1));
ksession.fireAllRules();
kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add(ResourceFactory.newByteArrayResource(str2.getBytes()), ResourceType.DRL);
if (kbuilder.hasErrors()) {
fail(kbuilder.getErrors().toString());
}
kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
ksession.fireAllRules();
// this second insert forces the regeneration of the otnIds
ksession.insert(new A(2, 2, 2, 2));
LeftTuple leftTuple = ((DefaultFactHandle) fh).getFirstLeftTuple();
ObjectTypeNode.Id letTupleOtnId = leftTuple.getLeftTupleSink().getLeftInputOtnId();
leftTuple = leftTuple.getLeftParentNext();
while (leftTuple != null) {
assertTrue(letTupleOtnId.before(leftTuple.getLeftTupleSink().getLeftInputOtnId()));
letTupleOtnId = leftTuple.getLeftTupleSink().getLeftInputOtnId();
leftTuple = leftTuple.getLeftParentNext();
}
}
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) {
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
}