Package com.espertech.esper.util

Examples of com.espertech.esper.util.StopCallback

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        // Materialize views
        Viewable finalView = services.getViewService().createViews(rootView, unmaterializedViewChain.getViewFactoryChain(), statementContext);

        // If this is a virtual data window implementation, bind it to the context for easy lookup
        StopCallback envStopCallback = null;
        if (finalView instanceof VirtualDWView) {
            final String objectName = "/virtualdw/" + windowName;
            final VirtualDWView virtualDWView = (VirtualDWView) finalView;
            try {
                services.getEngineEnvContext().bind(objectName, virtualDWView.getVirtualDataWindow());
            }
            catch (NamingException e) {
                throw new ViewProcessingException("Invalid name for adding to context:" + e.getMessage(), e);
            }
            envStopCallback = new StopCallback() {
                public void stop() {
                    try {
                        virtualDWView.destroy();
                        services.getEngineEnvContext().unbind(objectName);
                    } catch (NamingException e) {}
                }
            };
        }
        final StopCallback environmentStopCallback = envStopCallback;

        // create stop method using statement stream specs
        EPStatementStopMethod stopMethod = new EPStatementStopMethod()
        {
            public void stop()
            {
                statementContext.getStatementStopService().fireStatementStopped();
                boolean filterSubselectSameStream = determineSubquerySameStream(filterStreamSpec);
                services.getStreamService().dropStream(filterStreamSpec.getFilterSpec(), statementContext.getFilterService(), false,false, true, filterSubselectSameStream);
                String windowName = statementSpec.getCreateWindowDesc().getWindowName();
                services.getNamedWindowService().removeProcessor(windowName);
                if (environmentStopCallback != null) {
                    environmentStopCallback.stop();
                }
            }
        };

        // Attach tail view
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            throws ExprValidationException
    {
        // Handle joins
        final JoinSetComposer composer = statementContext.getJoinSetComposerFactory().makeComposer(statementSpec.getOuterJoinDescList(), statementSpec.getFilterRootNode(), streamTypes, streamNames, streamViews, selectStreamSelectorEnum, joinAnalysisResult, statementContext, queryPlanLogging, statementContext.getAnnotations());

        stopCallbacks.add(new StopCallback(){
            public void stop()
            {
                composer.destroy();
            }
        });
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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, false, false);
                    }
                };
            }
        };
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        if (variableNames != null && !variableNames.isEmpty()) {
            for (String variable : variableNames) {
                final VariableService variableService = agentInstanceContext.getStatementContext().getVariableService();
                final VariableReader reader = variableService.getReader(variable);
                agentInstanceContext.getStatementContext().getVariableService().registerCallback(reader.getVariableNumber(), this);
                agentInstanceContext.addTerminationCallback(new StopCallback() {
                    public void stop() {
                        variableService.unregisterCallback(reader.getVariableNumber(), ExpressionViewBase.this);
                    }
                });
            }
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        if (variableNames != null && !variableNames.isEmpty()) {
            for (String variable : variableNames) {
                final VariableService variableService = agentInstanceContext.getStatementContext().getVariableService();
                final VariableReader reader = variableService.getReader(variable);
                agentInstanceContext.getStatementContext().getVariableService().registerCallback(reader.getVariableNumber(), this);
                agentInstanceContext.getTerminationCallbacks().add(new StopCallback() {
                    public void stop() {
                        variableService.unregisterCallback(reader.getVariableNumber(), ExpressionWindowView.this);
                    }
                });
            }
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            // if using variables, register a callback on the change of the variable
            for (String variableName : parent.getVariableNames())
            {
                final VariableReader reader = agentInstanceContext.getStatementContext().getVariableService().getReader(variableName);
                agentInstanceContext.getStatementContext().getVariableService().registerCallback(reader.getVariableNumber(), this);
                agentInstanceContext.getTerminationCallbacks().add(new StopCallback() {
                    public void stop() {
                        agentInstanceContext.getStatementContext().getVariableService().unregisterCallback(reader.getVariableNumber(), OutputConditionExpression.this);
                    }
                });
            }
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        if (services.getSchedulableAgentInstanceDirectory() != null) {
            services.getSchedulableAgentInstanceDirectory().add(agentInstanceContext.getEpStatementAgentInstanceHandle());
        }

        final List<StopCallback> stopCallbacks = new ArrayList<StopCallback>();
        StopCallback stopCallback = new StopCallback() {
            public void stop() {
                StatementAgentInstanceUtil.stopSafe(agentInstanceContext.getTerminationCallbacks(), stopCallbacks, statementContext);
            }
        };
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                                                         List<StopCallback> stopCallbacks,
                                                         StreamJoinAnalysisResult joinAnalysisResult)
    {
        final JoinSetComposerDesc joinSetComposerDesc = joinSetComposerPrototype.create(streamViews);

        stopCallbacks.add(new StopCallback(){
            public void stop()
            {
                joinSetComposerDesc.getJoinSetComposer().destroy();
            }
        });
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    }

    public StatementAgentInstanceFactoryCreateWindowResult newContext(final AgentInstanceContext agentInstanceContext)
    {
        final List<StopCallback> stopCallbacks = new ArrayList<StopCallback>();
        StopCallback stopCallback = new StopCallback() {
            public void stop() {
                StatementAgentInstanceUtil.stopSafe(agentInstanceContext.getTerminationCallbacks(), stopCallbacks, statementContext);
            }
        };

        String windowName = statementSpec.getCreateWindowDesc().getWindowName();
        Viewable finalView;

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

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

            // Allocate processor instance
            NamedWindowProcessorInstance processorInstance = processor.addInstance(agentInstanceContext);
            View rootView = processorInstance.getRootViewInstance();
            eventStreamParentViewable.addView(rootView);

            // Materialize views
            AgentInstanceViewFactoryChainContext viewFactoryChainContext = new AgentInstanceViewFactoryChainContext(agentInstanceContext, true, null, null);
            finalView = services.getViewService().createViews(rootView, unmaterializedViewChain.getViewFactoryChain(), viewFactoryChainContext, false);

            // If this is a virtual data window implementation, bind it to the context for easy lookup
            StopCallback envStopCallback = null;
            if (finalView instanceof VirtualDWView) {
                final String objectName = "/virtualdw/" + windowName;
                final VirtualDWView virtualDWView = (VirtualDWView) finalView;
                try {
                    services.getEngineEnvContext().bind(objectName, virtualDWView.getVirtualDataWindow());
                }
                catch (NamingException e) {
                    throw new ViewProcessingException("Invalid name for adding to context:" + e.getMessage(), e);
                }
                envStopCallback = new StopCallback() {
                    public void stop() {
                        try {
                            virtualDWView.destroy();
                            services.getEngineEnvContext().unbind(objectName);
                        } catch (NamingException e) {}
                    }
                };
            }
            final StopCallback environmentStopCallback = envStopCallback;

            // create stop method using statement stream specs
            StopCallback allInOneStopMethod = new StopCallback()
            {
                public void stop()
                {
                    String windowName = statementSpec.getCreateWindowDesc().getWindowName();
                    NamedWindowProcessor processor = services.getNamedWindowService().getProcessor(windowName);
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    }

    public StatementAgentInstanceFactoryOnTriggerResult newContext(final AgentInstanceContext agentInstanceContext)
    {
        final List<StopCallback> stopCallbacks = new ArrayList<StopCallback>();
        StopCallback stopCallback = new StopCallback() {
            public void stop() {
                StatementAgentInstanceUtil.stopSafe(agentInstanceContext.getTerminationCallbacks(), stopCallbacks, statementContext);
            }
        };
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Related Classes of com.espertech.esper.util.StopCallback

  • com.espertech.esper.core.context.factory.StatementAgentInstanceFactoryCreateVariable
  • com.espertech.esper.core.context.factory.StatementAgentInstanceFactoryCreateWindow
  • com.espertech.esper.core.context.factory.StatementAgentInstanceFactoryOnTrigger
  • com.espertech.esper.core.context.factory.StatementAgentInstanceFactorySelect
  • com.espertech.esper.core.context.factory.StatementAgentInstanceFactoryUpdate
  • com.espertech.esper.core.context.util.AgentInstanceContext
  • com.espertech.esper.core.context.util.StatementAgentInstanceUtil
  • com.espertech.esper.core.EPStatementStartMethod
  • com.espertech.esper.core.start.EPStatementStartMethodCreateWindow
  • com.espertech.esper.core.start.EPStatementStartMethodSelect
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