public void doRightDeletes(
NotNode notNode,
LeftTupleSink sink,
BetaMemory bm,
InternalWorkingMemory wm,
RightTupleSets srcRightTuples,
LeftTupleSets trgLeftTuples) {
LeftTupleMemory ltm = bm.getLeftTupleMemory();
RightTupleMemory rtm = bm.getRightTupleMemory();
ContextEntry[] contextEntry = bm.getContext();
BetaConstraints constraints = notNode.getRawConstraints();
for (RightTuple rightTuple = srcRightTuples.getDeleteFirst(); rightTuple != null; ) {
RightTuple next = rightTuple.getStagedNext();
FastIterator it = notNode.getRightIterator(rtm);
// assign now, so we can remove from memory before doing any possible propagations
boolean useComparisonIndex = rtm.getIndexType().isComparison();
RightTuple rootBlocker = useComparisonIndex ? null : (RightTuple) it.next(rightTuple);
if (rightTuple.getMemory() != null) {
// it may have been staged and never actually added
rtm.remove(rightTuple);
}
if (rightTuple.getBlocked() != null) {
for (LeftTuple leftTuple = rightTuple.getBlocked(); leftTuple != null; ) {
LeftTuple temp = leftTuple.getBlockedNext();
leftTuple.clearBlocker();
if (leftTuple.getStagedType() == LeftTuple.UPDATE) {
// ignore, as it will get processed via left iteration. Children cannot be processed
// twice
leftTuple = temp;
continue;
}
constraints.updateFromTuple(contextEntry, wm, leftTuple);
if (useComparisonIndex) {
rootBlocker = rtm.getFirst(leftTuple, null, it);
}
// we know that older tuples have been checked so continue next
for (RightTuple newBlocker = rootBlocker;
newBlocker != null;
newBlocker = (RightTuple) it.next(newBlocker)) {
if (constraints.isAllowedCachedLeft(contextEntry, newBlocker.getFactHandle())) {
leftTuple.setBlocker(newBlocker);
newBlocker.addBlocked(leftTuple);
break;
}
}
if (leftTuple.getBlocker() == null) {
// was previous blocked and not in memory, so add
ltm.add(leftTuple);
trgLeftTuples.addInsert(
sink.createLeftTuple(leftTuple, sink, rightTuple.getPropagationContext(), true));
}
leftTuple = temp;
}
}
rightTuple.nullBlocked();
rightTuple.clearStaged();
rightTuple = next;
}
constraints.resetTuple(contextEntry);
}
public void doRightInserts(
NotNode notNode,
BetaMemory bm,
InternalWorkingMemory wm,
RightTupleSets srcRightTuples,
LeftTupleSets trgLeftTuples,
LeftTupleSets stagedLeftTuples) {
LeftTupleMemory ltm = bm.getLeftTupleMemory();
RightTupleMemory rtm = bm.getRightTupleMemory();
ContextEntry[] contextEntry = bm.getContext();
BetaConstraints constraints = notNode.getRawConstraints();
// this must be processed here, rather than initial insert, as we need to link the blocker
unlinkNotNodeOnRightInsert(notNode, bm, wm);
for (RightTuple rightTuple = srcRightTuples.getInsertFirst(); rightTuple != null; ) {
RightTuple next = rightTuple.getStagedNext();
rtm.add(rightTuple);
if (ltm == null || ltm.size() == 0) {
// do nothing here, as no left memory
rightTuple.clearStaged();
rightTuple = next;
continue;
}
FastIterator it = notNode.getLeftIterator(ltm);
PropagationContext context = rightTuple.getPropagationContext();
constraints.updateFromFactHandle(contextEntry, wm, rightTuple.getFactHandle());
for (LeftTuple leftTuple = notNode.getFirstLeftTuple(rightTuple, ltm, context, it);
leftTuple != null; ) {
// preserve next now, in case we remove this leftTuple
LeftTuple temp = (LeftTuple) it.next(leftTuple);
if (leftTuple.getStagedType() == LeftTuple.UPDATE) {
// ignore, as it will get processed via left iteration. Children cannot be processed twice
leftTuple = temp;
continue;
}
// we know that only unblocked LeftTuples are still in the memory
if (constraints.isAllowedCachedRight(contextEntry, leftTuple)) {
leftTuple.setBlocker(rightTuple);
rightTuple.addBlocked(leftTuple);
// this is now blocked so remove from memory
ltm.remove(leftTuple);
// subclasses like ForallNotNode might override this propagation
// ** @TODO (mdp) need to not break forall
LeftTuple childLeftTuple = leftTuple.getFirstChild();
if (childLeftTuple != null) { // NotNode only has one child
childLeftTuple.setPropagationContext(rightTuple.getPropagationContext());
RuleNetworkEvaluator.deleteLeftChild(childLeftTuple, trgLeftTuples, stagedLeftTuples);
}
}
leftTuple = temp;
}
rightTuple.clearStaged();
rightTuple = next;
}
constraints.resetFactHandle(contextEntry);
}
public void doRightUpdates(
NotNode notNode,
LeftTupleSink sink,
BetaMemory bm,
InternalWorkingMemory wm,
RightTupleSets srcRightTuples,
LeftTupleSets trgLeftTuples,
LeftTupleSets stagedLeftTuples) {
LeftTupleMemory ltm = bm.getLeftTupleMemory();
RightTupleMemory rtm = bm.getRightTupleMemory();
ContextEntry[] contextEntry = bm.getContext();
BetaConstraints constraints = notNode.getRawConstraints();
boolean iterateFromStart =
notNode.isIndexedUnificationJoin() || rtm.getIndexType().isComparison();
for (RightTuple rightTuple = srcRightTuples.getUpdateFirst(); rightTuple != null; ) {
RightTuple next = rightTuple.getStagedNext();
PropagationContext context = rightTuple.getPropagationContext();
constraints.updateFromFactHandle(contextEntry, wm, rightTuple.getFactHandle());
FastIterator leftIt = notNode.getLeftIterator(ltm);
LeftTuple firstLeftTuple = notNode.getFirstLeftTuple(rightTuple, ltm, context, leftIt);
LeftTuple firstBlocked = rightTuple.getTempBlocked();
// first process non-blocked tuples, as we know only those ones are in the left memory.
for (LeftTuple leftTuple = firstLeftTuple; leftTuple != null; ) {
// preserve next now, in case we remove this leftTuple
LeftTuple temp = (LeftTuple) leftIt.next(leftTuple);
if (leftTuple.getStagedType() == LeftTuple.UPDATE) {
// ignore, as it will get processed via left iteration. Children cannot be processed twice
leftTuple = temp;
continue;
}
// we know that only unblocked LeftTuples are still in the memory
if (constraints.isAllowedCachedRight(contextEntry, leftTuple)) {
leftTuple.setBlocker(rightTuple);
rightTuple.addBlocked(leftTuple);
// this is now blocked so remove from memory
ltm.remove(leftTuple);
LeftTuple childLeftTuple = leftTuple.getFirstChild();
if (childLeftTuple != null) {
childLeftTuple.setPropagationContext(rightTuple.getPropagationContext());
RuleNetworkEvaluator.deleteRightChild(childLeftTuple, trgLeftTuples, stagedLeftTuples);
}
}
leftTuple = temp;
}
if (firstBlocked != null) {
RightTuple rootBlocker = rightTuple.getTempNextRightTuple();
if (rootBlocker == null) {
iterateFromStart = true;
}
FastIterator rightIt = notNode.getRightIterator(rtm);
// iterate all the existing previous blocked LeftTuples
for (LeftTuple leftTuple = firstBlocked; leftTuple != null; ) {
LeftTuple temp = leftTuple.getBlockedNext();
leftTuple.clearBlocker();
if (leftTuple.getStagedType() == LeftTuple.UPDATE) {
// ignore, as it will get processed via left iteration. Children cannot be processed
// twice
// but need to add it back into list first
leftTuple.setBlocker(rightTuple);
rightTuple.addBlocked(leftTuple);
leftTuple = temp;
continue;
}
constraints.updateFromTuple(contextEntry, wm, leftTuple);
if (iterateFromStart) {
rootBlocker = notNode.getFirstRightTuple(leftTuple, rtm, null, rightIt);
}
// we know that older tuples have been checked so continue next
for (RightTuple newBlocker = rootBlocker;
newBlocker != null;
newBlocker = (RightTuple) rightIt.next(newBlocker)) {
// cannot select a RightTuple queued in the delete list
// There may be UPDATE RightTuples too, but that's ok. They've already been re-added to
// the correct bucket, safe to be reprocessed.
if (leftTuple.getStagedType() != LeftTuple.DELETE
&& newBlocker.getStagedType() != LeftTuple.DELETE
&& constraints.isAllowedCachedLeft(contextEntry, newBlocker.getFactHandle())) {
leftTuple.setBlocker(newBlocker);
newBlocker.addBlocked(leftTuple);
break;
}
}
if (leftTuple.getBlocker() == null) {
// was previous blocked and not in memory, so add
ltm.add(leftTuple);
// subclasses like ForallNotNode might override this propagation
trgLeftTuples.addInsert(
sink.createLeftTuple(leftTuple, sink, rightTuple.getPropagationContext(), true));
}
leftTuple = temp;
}
}
rightTuple.clearStaged();
rightTuple = next;
}
constraints.resetFactHandle(contextEntry);
constraints.resetTuple(contextEntry);
}
public void eval2(
LeftInputAdapterNode liaNode,
PathMemory rmem,
NetworkNode node,
Memory nodeMem,
SegmentMemory[] smems,
int smemIndex,
LeftTupleSets trgTuples,
InternalWorkingMemory wm,
LinkedList<StackEntry> stack,
Set<String> visitedRules,
boolean processRian,
RuleExecutor executor) {
LeftTupleSets srcTuples;
SegmentMemory smem = smems[smemIndex];
while (true) {
srcTuples = trgTuples; // previous target, is now the source
if (log.isTraceEnabled()) {
int offset = getOffset(node);
log.trace(
"{} {} {} {}", indent(offset), ++cycle, node.toString(), srcTuples.toStringSizes());
}
if (NodeTypeEnums.isTerminalNode(node)) {
TerminalNode rtn = (TerminalNode) node;
if (node.getType() == NodeTypeEnums.QueryTerminalNode) {
pQtNode.doNode((QueryTerminalNode) rtn, wm, srcTuples, stack);
} else {
pRtNode.doNode(rtn, wm, srcTuples, executor);
}
return;
} else if (NodeTypeEnums.RightInputAdaterNode == node.getType()) {
doRiaNode2(wm, srcTuples, (RightInputAdapterNode) node, stack);
return;
}
LeftTupleSets stagedLeftTuples;
if (node == smem.getTipNode() && smem.getFirst() != null) {
// we are about to process the segment tip, allow it to merge insert/update/delete clashes
// Can happen if the next segments have not yet been initialized
stagedLeftTuples = smem.getFirst().getStagedLeftTuples();
} else {
stagedLeftTuples = null;
}
LeftTupleSinkNode sink = ((LeftTupleSource) node).getSinkPropagator().getFirstLeftTupleSink();
trgTuples = new LeftTupleSets();
if (NodeTypeEnums.isBetaNode(node)) {
BetaNode betaNode = (BetaNode) node;
BetaMemory bm = null;
AccumulateMemory am = null;
if (NodeTypeEnums.AccumulateNode == node.getType()) {
am = (AccumulateMemory) nodeMem;
bm = am.getBetaMemory();
} else {
bm = (BetaMemory) nodeMem;
}
if (processRian && betaNode.isRightInputIsRiaNode()) {
// if the subnetwork is nested in this segment, it will create srcTuples containing
// peer LeftTuples, suitable for the node in the main path.
doRiaNode(
wm,
liaNode,
rmem,
srcTuples,
betaNode,
sink,
smems,
smemIndex,
nodeMem,
bm,
stack,
visitedRules,
executor);
return; // return here is doRiaNode queues the evaluation on the stack, which is necessary
// to handled nested query nodes
}
if (!bm.getDequeu().isEmpty()) {
// If there are no staged RightTuples, then process the Dequeue, popping entries, until
// another insert/expiration clash
RightTupleSets rightTuples = bm.getStagedRightTuples();
if (rightTuples.isEmpty()) {
// nothing staged, so now process the Dequeu
Deque<RightTuple> que = bm.getDequeu();
while (!que.isEmpty()) {
RightTuple rightTuple = que.peekFirst();
if (rightTuple.getPropagationContext().getType() == PropagationContext.EXPIRATION
&&
// Cannot pop an expired fact, if the insert/update has not yet been evaluated.
rightTuple.getStagedType() != LeftTuple.NONE) {
break;
}
switch (rightTuple.getPropagationContext().getType()) {
case PropagationContext.INSERTION:
case PropagationContext.RULE_ADDITION:
rightTuples.addInsert(rightTuple);
break;
case PropagationContext.MODIFICATION:
rightTuples.addUpdate(rightTuple);
break;
case PropagationContext.DELETION:
case PropagationContext.EXPIRATION:
case PropagationContext.RULE_REMOVAL:
rightTuples.addDelete(rightTuple);
break;
}
que.removeFirst();
}
}
if (!bm.getDequeu().isEmpty()) {
// The DeQue is not empty, add StackEntry for reprocessing.
StackEntry stackEntry =
new StackEntry(
liaNode,
node,
sink,
rmem,
nodeMem,
smems,
smemIndex,
trgTuples,
visitedRules,
false);
stack.add(stackEntry);
}
}
switch (node.getType()) {
case NodeTypeEnums.JoinNode:
{
pJoinNode.doNode(
(JoinNode) node, sink, bm, wm, srcTuples, trgTuples, stagedLeftTuples);
break;
}
case NodeTypeEnums.NotNode:
{
pNotNode.doNode((NotNode) node, sink, bm, wm, srcTuples, trgTuples, stagedLeftTuples);
break;
}
case NodeTypeEnums.ExistsNode:
{
pExistsNode.doNode(
(ExistsNode) node, sink, bm, wm, srcTuples, trgTuples, stagedLeftTuples);
break;
}
case NodeTypeEnums.AccumulateNode:
{
pAccNode.doNode(
(AccumulateNode) node, sink, am, wm, srcTuples, trgTuples, stagedLeftTuples);
break;
}
}
} else {
switch (node.getType()) {
case NodeTypeEnums.EvalConditionNode:
{
pEvalNode.doNode(
(EvalConditionNode) node,
(EvalMemory) nodeMem,
sink,
wm,
srcTuples,
trgTuples,
stagedLeftTuples);
break;
}
case NodeTypeEnums.FromNode:
{
pFromNode.doNode(
(FromNode) node,
(FromMemory) nodeMem,
sink,
wm,
srcTuples,
trgTuples,
stagedLeftTuples);
break;
}
case NodeTypeEnums.QueryElementNode:
{
QueryElementNodeMemory qmem = (QueryElementNodeMemory) nodeMem;
if (srcTuples.isEmpty() && qmem.getResultLeftTuples().isEmpty()) {
// no point in evaluating query element, and setting up stack, if there is nothing
// to process
break;
}
QueryElementNode qnode = (QueryElementNode) node;
if (visitedRules == Collections.<String>emptySet()) {
visitedRules = new HashSet<String>();
}
visitedRules.add(qnode.getQueryElement().getQueryName());
// result tuples can happen when reactivity occurs inside of the query, prior to
// evaluation
// we will need special behaviour to add the results again, when this query result
// resumes
trgTuples.addAll(qmem.getResultLeftTuples());
if (!srcTuples.isEmpty()) {
// only process the Query Node if there are src tuples
StackEntry stackEntry =
new StackEntry(
liaNode,
node,
sink,
rmem,
nodeMem,
smems,
smemIndex,
trgTuples,
visitedRules,
true);
stack.add(stackEntry);
pQueryNode.doNode(
qnode, (QueryElementNodeMemory) nodeMem, stackEntry, sink, wm, srcTuples);
SegmentMemory qsmem = ((QueryElementNodeMemory) nodeMem).getQuerySegmentMemory();
List<PathMemory> qrmems = qsmem.getPathMemories();
// Build the evaluation information for each 'or' branch
// Exception fo the last, place each entry on the stack, the last one evaluate now.
for (int i = qrmems.size() - 1; i >= 0; i--) {
PathMemory qrmem = qrmems.get(i);
rmem = qrmem;
smems = qrmem.getSegmentMemories();
smemIndex = 0;
smem = smems[smemIndex]; // 0
liaNode = (LeftInputAdapterNode) smem.getRootNode();
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
node = liaNode.getSinkPropagator().getFirstLeftTupleSink();
nodeMem =
smem.getNodeMemories().getFirst().getNext(); // skip the liaNode memory
}
trgTuples = smem.getStagedLeftTuples();
if (i != 0 && !trgTuples.isEmpty()) {
// All entries except the last should be placed on the stack for evaluation
// later.
stackEntry =
new StackEntry(
liaNode,
node,
null,
rmem,
nodeMem,
smems,
smemIndex,
trgTuples,
visitedRules,
false);
if (log.isTraceEnabled()) {
int offset = getOffset(stackEntry.getNode());
log.trace(
"{} ORQueue branch={} {} {}",
indent(offset),
i,
stackEntry.getNode().toString(),
trgTuples.toStringSizes());
}
stack.add(stackEntry);
}
}
processRian = true; // make sure it's reset, so ria nodes are processed
continue;
}
break;
}
case NodeTypeEnums.ConditionalBranchNode:
{
pBranchNode.doNode(
(ConditionalBranchNode) node,
(ConditionalBranchMemory) nodeMem,
sink,
wm,
srcTuples,
trgTuples,
stagedLeftTuples,
executor);
break;
}
}
}
if (node != smem.getTipNode()) {
// get next node and node memory in the segment
node = sink;
nodeMem = nodeMem.getNext();
} else {
// Reached end of segment, start on new segment.
SegmentPropagator.propagate(smem, trgTuples, wm);
smem = smems[++smemIndex];
trgTuples = smem.getStagedLeftTuples();
if (log.isTraceEnabled()) {
log.trace("Segment {}", smemIndex);
}
node = (LeftTupleSink) smem.getRootNode();
nodeMem = smem.getNodeMemories().getFirst();
}
processRian = true; // make sure it's reset, so ria nodes are processed
}
}