Package com.espertech.esper.core.context.activator

Examples of com.espertech.esper.core.context.activator.ViewableActivationResult

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                    throw new IllegalStateException("Failed to find viewable for filter");
                }
                final EPLSelectViewable viewable = found;
                return new ViewableActivator() {
                    public ViewableActivationResult activate(AgentInstanceContext agentInstanceContext, boolean isSubselect, boolean isRecoveringResilient) {
                        return new ViewableActivationResult(viewable, new StopCallback() {public void stop() {}}, null, null);
                    }
                };
            }
        };
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        try {
            // create root viewables
            eventStreamParentViewable = new Viewable[numStreams];
            patternRoots = new EvalRootState[numStreams];
            for (int stream = 0; stream < eventStreamParentViewableActivators.length; stream++) {
                ViewableActivationResult activationResult = eventStreamParentViewableActivators[stream].activate(agentInstanceContext, false, isRecoveringResilient);
                viewableActivationResult[stream] = activationResult;
                stopCallbacks.add(activationResult.getStopCallback());

                eventStreamParentViewable[stream] = activationResult.getViewable();
                patternRoots[stream] = activationResult.getOptionalPatternRoot();

                if (activationResult.getOptionalLock() != null) {
                    agentInstanceContext.getEpStatementAgentInstanceHandle().setStatementAgentInstanceLock(activationResult.getOptionalLock());
                    statementContext.setDefaultAgentInstanceLock(activationResult.getOptionalLock());
                }
            }

            // compile view factories adding "prior" as necessary
            List<ViewFactory>[] viewFactoryChains = new List[numStreams];
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        StatementAgentInstancePostLoad postLoad = null;
        Viewable topView;

        try {
            // Register interest
            ViewableActivationResult activationResult = activator.activate(agentInstanceContext, false, isRecoveringResilient);
            stopCallbacks.add(activationResult.getStopCallback());
            eventStreamParentViewable = activationResult.getViewable();

            // Obtain processor for this named window
            NamedWindowProcessor processor = services.getNamedWindowService().getProcessor(windowName);

            if (processor == null) {
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                OnTriggerSplitStreamDesc desc = (OnTriggerSplitStreamDesc) statementSpec.getOnTriggerDesc();
                onExprView = new RouteResultView(desc.isFirst(), activatorResultEventType, statementContext.getEpStatementHandle(), services.getInternalEventRouter(), splitDesc.getNamedWindowInsert(), processors, splitDesc.getWhereClauses(), statementContext);
            }

            // attach stream to view
            final ViewableActivationResult activationResult = activator.activate(agentInstanceContext, false, isRecoveringResilient);
            activationResult.getViewable().addView(onExprView);
            stopCallbacks.add(activationResult.getStopCallback());
            optPatternRoot = activationResult.getOptionalPatternRoot();

            // start subselects
            subselectStrategies = EPStatementStartMethodHelperSubselect.startSubselects(services, subSelectStrategyCollection, agentInstanceContext, stopCallbacks);

            // attach view to output: for on-delete, create an output processor that passes on as a wildcard the underlying event
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Related Classes of com.espertech.esper.core.context.activator.ViewableActivationResult

  • com.espertech.esper.core.context.factory.StatementAgentInstanceFactoryCreateWindow
  • com.espertech.esper.core.context.factory.StatementAgentInstanceFactoryOnTrigger
  • com.espertech.esper.core.context.factory.StatementAgentInstanceFactorySelect
  • com.espertech.esper.dataflow.ops.Select
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