public static bool Evaluate(
EventBean[] eventsPerStream,
AgentInstanceContext agentInstanceContext,
ExpressionViewFactoryBase factory,
AggregationService aggregationService)
{
// Evaluation with aggregation requires a lock on the factory as the aggregation-field is assigned per-factory
if (aggregationService != null) {
lock (factory) {
factory.AggregationResultFutureAssignable.Assign(aggregationService);
var resultX = factory.ExpiryEval.Evaluate(eventsPerStream, true, agentInstanceContext);
if (resultX == null) {
return false;
}
return true.Equals(resultX);
}
}
var result = factory.ExpiryEval.Evaluate(eventsPerStream, true, agentInstanceContext);
if (result == null) {
return false;
}
return true.Equals(result);
}
public ExpressionViewBase(
ExpressionViewFactoryBase factory,
ViewUpdatedCollection viewUpdatedCollection,
ObjectArrayEventBean builtinEventProps,
AgentInstanceViewFactoryChainContext agentInstanceContext)
{
this.factory = factory;
this.viewUpdatedCollection = viewUpdatedCollection;
this.builtinEventProps = builtinEventProps;
eventsPerStream = new EventBean[] {null, builtinEventProps};
this.agentInstanceContext = agentInstanceContext.AgentInstanceContext;
if (factory.Variables != null && factory.Variables.Length > 0) {
foreach (var variable in factory.Variables) {
var variableDepId = variable.DeploymentId;
var variableName = variable.MetaData.VariableName;
int agentInstanceId = agentInstanceContext.AgentInstanceId;
agentInstanceContext.StatementContext.VariableManagementService.RegisterCallback(
variable.DeploymentId,
variableName,
agentInstanceId,
this);
agentInstanceContext.AgentInstanceContext.AddTerminationCallback(
new ProxyAgentInstanceMgmtCallback {
ProcStop = services => {
services.AgentInstanceContext.VariableManagementService
.UnregisterCallback(variableDepId, variableName, agentInstanceId, this);
}
});
}
ScheduleHandleCallback callback = new ProxyScheduleHandleCallback {
ProcScheduledTrigger = () => {
agentInstanceContext.AuditProvider.ScheduleFire(
agentInstanceContext.AgentInstanceContext,
ScheduleObjectType.view,
factory.ViewName);
agentInstanceContext.InstrumentationProvider.QViewScheduledEval(factory);
ScheduleCallback();
agentInstanceContext.InstrumentationProvider.AViewScheduledEval();
}
};
scheduleSlot = agentInstanceContext.StatementContext.ScheduleBucket.AllocateSlot();
scheduleHandle = new EPStatementHandleCallbackSchedule(
agentInstanceContext.EpStatementAgentInstanceHandle,
callback);
}
else {
scheduleSlot = -1;
scheduleHandle = null;
}
if (factory.AggregationServiceFactory != null) {
aggregationService = factory.AggregationServiceFactory.MakeService(
agentInstanceContext.AgentInstanceContext,
agentInstanceContext.ImportService,
false,
null,
null);
}
else {
aggregationService = null;
}
}
