private void RunAssertionAddRemoveFilter(FilterService service)
{
var eventType = SupportEventTypeFactory.CreateBeanType(typeof(SupportBean));
var spec = SupportFilterSpecBuilder.Build(eventType, new Object[] { "TheString", FilterOperator.EQUAL, "HELLO" });
var filterValues = spec.GetValueSet(null, null, null);
var callables = new Func <bool> [5];
for (int ii = 0; ii < callables.Length; ii++)
{
callables[ii] =
() =>
{
var handle = new SupportFilterHandle();
for (int jj = 0; jj < 10000; jj++)
{
var entry = service.Add(filterValues, handle);
service.Remove(handle, entry);
}
return(true);
};
}
Object[] result = TryMT(callables);
EPAssertionUtil.AssertAllBooleanTrue(result);
}
protected void StartFiltering()
{
FilterService filterService = _evalFilterNode.Context.PatternContext.FilterService;
Handle = new EPStatementHandleCallback(_evalFilterNode.Context.AgentInstanceContext.EpStatementAgentInstanceHandle, this);
FilterValueSet filterValues = _evalFilterNode.FactoryNode.FilterSpec.GetValueSet(BeginState, _evalFilterNode.Context.AgentInstanceContext, _evalFilterNode.AddendumFilters);
FilterServiceEntry = filterService.Add(filterValues, Handle);
long filtersVersion = filterService.FiltersVersion;
_evalFilterNode.Context.AgentInstanceContext.EpStatementAgentInstanceHandle.StatementFilterVersion.StmtFilterVersion = filtersVersion;
}
/// <summary>
/// See the method of the same name in <seealso cref="com.espertech.esper.view.stream.StreamFactoryService" />.
/// Always attempts to reuse an existing event stream. May thus return a new event stream or an existing event
/// stream depending on whether filter criteria match.
/// </summary>
/// <param name="statementId">the statement id</param>
/// <param name="filterSpec">is the filter definition</param>
/// <param name="filterService">filter service to activate filter if not already active</param>
/// <param name="epStatementAgentInstanceHandle">is the statement resource lock</param>
/// <param name="isJoin">is indicatng whether the stream will participate in a join statement, information necessary for stream reuse and multithreading concerns</param>
/// <param name="agentInstanceContext"></param>
/// <param name="hasOrderBy">if the consumer has order-by</param>
/// <param name="filterWithSameTypeSubselect">if set to <c>true</c> [filter with same type subselect].</param>
/// <param name="annotations">The annotations.</param>
/// <param name="stateless">if set to <c>true</c> [stateless].</param>
/// <param name="streamNum">The stream num.</param>
/// <param name="isCanIterateUnbound">if set to <c>true</c> [is can iterate unbound].</param>
/// <returns>
/// newly createdStatement event stream, not reusing existing instances
/// </returns>
/// <exception cref="IllegalStateException">Filter spec object already found in collection</exception>
public Pair <EventStream, IReaderWriterLock> CreateStream(
int statementId,
FilterSpecCompiled filterSpec,
FilterService filterService,
EPStatementAgentInstanceHandle epStatementAgentInstanceHandle,
bool isJoin,
AgentInstanceContext agentInstanceContext,
bool hasOrderBy,
bool filterWithSameTypeSubselect,
Attribute[] annotations,
bool stateless,
int streamNum,
bool isCanIterateUnbound)
{
EventStream eventStream;
if (Log.IsDebugEnabled)
{
Log.Debug(".createStream hashCode=" + filterSpec.GetHashCode() + " filter=" + filterSpec);
}
// Check if a stream for this filter already exists
StreamEntry entry;
var forceNewStream = isJoin || (!_isReuseViews) || hasOrderBy || filterWithSameTypeSubselect || stateless;
if (forceNewStream)
{
entry = _eventStreamsIdentity.Get(filterSpec);
}
else
{
entry = _eventStreamsRefCounted[filterSpec];
}
// If pair exists, either reference count or illegal state
if (entry != null)
{
if (forceNewStream)
{
throw new IllegalStateException("Filter spec object already found in collection");
}
else
{
Log.Debug(".createStream filter already found");
_eventStreamsRefCounted.Reference(filterSpec);
// audit proxy
eventStream = EventStreamProxy.GetAuditProxy(
_engineURI, epStatementAgentInstanceHandle.StatementHandle.StatementName, annotations,
filterSpec, entry.EventStream);
// We return the lock of the statement first establishing the stream to use that as the new statement's lock
return(new Pair <EventStream, IReaderWriterLock>(
eventStream, entry.Callback.AgentInstanceHandle.StatementAgentInstanceLock));
}
}
// New event stream
var resultEventType = filterSpec.ResultEventType;
var zeroDepthStream = isCanIterateUnbound
? (EventStream) new ZeroDepthStreamIterable(resultEventType)
: (EventStream) new ZeroDepthStreamNoIterate(resultEventType);
// audit proxy
var inputStream = EventStreamProxy.GetAuditProxy(
_engineURI, epStatementAgentInstanceHandle.StatementHandle.StatementName, annotations, filterSpec,
zeroDepthStream);
eventStream = inputStream;
FilterHandleCallback filterCallback;
if (filterSpec.OptionalPropertyEvaluator != null)
{
filterCallback = new ProxyFilterHandleCallback()
{
ProcStatementId = () => statementId,
ProcMatchFound = (theEvent, allStmtMatches) =>
{
var result = filterSpec.OptionalPropertyEvaluator.GetProperty(theEvent, agentInstanceContext);
if (result != null)
{
eventStream.Insert(result);
}
},
ProcIsSubselect = () => false
};
}
else
{
filterCallback = new ProxyFilterHandleCallback()
{
ProcStatementId = () => statementId,
ProcMatchFound = (theEvent, allStmtMatches) =>
{
if (InstrumentationHelper.ENABLED)
{
InstrumentationHelper.Get().QFilterActivationStream(theEvent.EventType.Name, streamNum);
}
eventStream.Insert(theEvent);
if (InstrumentationHelper.ENABLED)
{
InstrumentationHelper.Get().AFilterActivationStream();
}
},
ProcIsSubselect = () => false
};
}
var handle = new EPStatementHandleCallback(epStatementAgentInstanceHandle, filterCallback);
// Store stream for reuse
entry = new StreamEntry(eventStream, handle);
if (forceNewStream)
{
_eventStreamsIdentity.Put(filterSpec, entry);
}
else
{
_eventStreamsRefCounted[filterSpec] = entry;
}
// Activate filter
var filterValues = filterSpec.GetValueSet(null, agentInstanceContext, null);
var filterServiceEntry = filterService.Add(filterValues, handle);
entry.FilterServiceEntry = filterServiceEntry;
return(new Pair <EventStream, IReaderWriterLock>(inputStream, null));
}
