/**
* 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);
}
/**
* Propagate the <code>FactHandleimpl</code> through the <code>Rete</code> network. All <code>
* FactHandleImpl</code> should be remembered in the node memory, so that later runtime rule
* attachmnents can have the matched facts propagated to them.
*
* @param factHandle The fact handle.
* @param object The object to assert.
* @param workingMemory The working memory session.
*/
public void assertObject(
final InternalFactHandle factHandle,
final PropagationContext context,
final InternalWorkingMemory workingMemory) {
if (context.getType() == PropagationContext.MODIFICATION
&& this.skipOnModify
&& context.getDormantActivations() == 0) {
// we do this after the shadowproxy update, just so that its up to date for the future
return;
}
if (this.objectMemoryEnabled) {
final ObjectHashSet memory = (ObjectHashSet) workingMemory.getNodeMemory(this);
memory.add(factHandle, false);
}
this.sink.propagateAssertObject(factHandle, context, workingMemory);
if (this.expirationOffset >= 0) {
// schedule expiration
WorkingMemoryReteExpireAction expire = new WorkingMemoryReteExpireAction(factHandle, this);
TimerService clock = workingMemory.getTimerService();
long nextTimestamp = clock.getCurrentTime() + this.expirationOffset;
JobContext jobctx = new ExpireJobContext(expire, workingMemory);
JobHandle handle = clock.scheduleJob(job, jobctx, new PointInTimeTrigger(nextTimestamp));
jobctx.setJobHandle(handle);
}
}
public void updateSink(
final ObjectSink sink,
final PropagationContext context,
final InternalWorkingMemory workingMemory) {
final ObjectHashSet memory = (ObjectHashSet) workingMemory.getNodeMemory(this);
Iterator it = memory.iterator();
for (ObjectEntry entry = (ObjectEntry) it.next();
entry != null;
entry = (ObjectEntry) it.next()) {
sink.assertObject((InternalFactHandle) entry.getValue(), context, workingMemory);
}
}
