public static bool EventsAreEqualsAllowNull(
EventBean first,
EventBean second)
{
if (first == null) {
return second == null;
}
return second != null && first.Equals(second);
}
public bool HandleFilterFault(EventBean theEvent, long version)
{
/*
* Handle filter faults such as
* - a) App thread determines event E1 applies to CTX + CP1
* b) Timer thread destroys CP1
* c) App thread processes E1 for CTX allocating CP2, processing E1 for CP2
* d) App thread processes E1 for CP1, filter-faulting and ending up dropping the event for CP1 because of this handler
*
* - a) App thread determines event E1 applies to CTX + CP1
* b) App thread processes E1 for CTX, no action
* c) Timer thread destroys CP1
* d) App thread processes E1 for CP1, filter-faulting and ending up processing E1 into CTX because of this handler
*/
AgentInstanceContext aiCreate = _contextControllerInitTerm.Factory.FactoryContext.AgentInstanceContextCreate;
using (aiCreate.EpStatementAgentInstanceHandle.StatementAgentInstanceLock.AcquireWriteLock())
{
Object key = _contextControllerInitTerm.GetDistinctKey(theEvent);
EventBean trigger = _contextControllerInitTerm.DistinctContexts.Get(key);
// see if we find that context partition
if (trigger != null)
{
// true for we have already handled this event
// false for filter fault
return(trigger.Equals(theEvent));
}
// not found: evaluate against context
StatementAgentInstanceUtil.EvaluateEventForStatement(
_contextControllerInitTerm.Factory.FactoryContext.ServicesContext,
theEvent, null, Collections.SingletonList(new AgentInstance(null, aiCreate, null)));
return(true); // we handled the event
}
}