/**
* Fire the next scheduled <code>Agenda</code> item, skipping items that are not allowed by the
* agenda filter.
*
* @return true if an activation was fired. false if no more activations to fire
* @throws org.drools.core.spi.ConsequenceException If an error occurs while firing an agenda
* item.
*/
public int fireNextItem(final AgendaFilter filter, int fireCount, int fireLimit)
throws ConsequenceException {
boolean tryagain;
int localFireCount = 0;
try {
do {
evaluateEagerList();
this.workingMemory.prepareToFireActivation();
tryagain = false;
final InternalAgendaGroup group = (InternalAgendaGroup) getNextFocus();
// if there is a group with focus
if (group != null) {
final AgendaItem item = (AgendaItem) group.remove();
// if there is an item to fire from that group
if (item != null) {
// if that item is allowed to fire
if (filter == null || filter.accept(item)) {
// fire it
fireActivation(item);
localFireCount++;
} else {
// otherwise cancel it and try the next
// necessary to perfom queued actions like signal to a next node in a ruleflow/jbpm
// process
this.workingMemory.executeQueuedActions();
final EventSupport eventsupport = (EventSupport) this.workingMemory;
eventsupport
.getAgendaEventSupport()
.fireActivationCancelled(item, this.workingMemory, MatchCancelledCause.FILTER);
tryagain = true;
}
}
if ((AgendaItem) group.peek() == null
|| !((AgendaItem) group.peek()).getTerminalNode().isFireDirect()) {
// make sure the "fireDirect" meta rules have all impacted first, before unstaging.
unstageActivations();
}
}
} while (tryagain);
} finally {
this.workingMemory.activationFired();
}
return localFireCount;
}
private boolean cancelAndContinue(
InternalWorkingMemory wm,
RuleTerminalNode rtn,
RuleImpl rule,
LeftTuple leftTuple,
PropagationContext pctx,
AgendaFilter filter) {
// NB. stopped setting the LT.object to Boolean.TRUE, that Reteoo did.
if (!rule.isEffective(leftTuple, rtn, wm)) {
return true;
}
if (rule.getCalendars() != null) {
long timestamp = wm.getSessionClock().getCurrentTime();
for (String cal : rule.getCalendars()) {
if (!wm.getCalendars().get(cal).isTimeIncluded(timestamp)) {
return true;
}
}
}
return filter != null && !filter.accept((Activation) leftTuple);
}