Examples of com.espertech.esper.epl.named.NamedWindowProcessorInstance

com.espertech.esper.epl.named.NamedWindowProcessorInstance
An instance of this class is associated with a specific named window. The processor provides the views to create-window, on-delete statements and statements selecting from a named window.

        final StreamSpecCompiled streamSpec = statementSpec.getStreamSpecs()[streamNum];
        NamedWindowConsumerStreamSpec namedSpec = (NamedWindowConsumerStreamSpec) streamSpec;
        NamedWindowProcessor namedWindowProcessor = processors[streamNum];


        // handle the case of a single or matching agent instance
        NamedWindowProcessorInstance processorInstance = namedWindowProcessor.getProcessorInstance(agentInstanceContext);
        if (processorInstance != null) {
            return getStreamSnapshotInstance(streamNum, namedSpec, processorInstance);
        }


        // context partition runtime query
        Collection<Integer> contextPartitions = EPPreparedExecuteMethodHelper.getAgentInstanceIds(namedWindowProcessor, contextPartitionSelector, services.getContextManagementService(), namedWindowProcessor.getContextName());


        // collect events
        ArrayDeque<EventBean> events = new ArrayDeque<EventBean>();
        for (int agentInstanceId : contextPartitions) {
            processorInstance = namedWindowProcessor.getProcessorInstance(agentInstanceId);
            if (processorInstance != null) {
                Collection<EventBean> coll = processorInstance.getTailViewInstance().snapshot(filters[streamNum], statementSpec.getAnnotations());
                events.addAll(coll);
            }
        }
        return events;
    }

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        else
        {
            Viewable[] viewablePerStream = new Viewable[numStreams];
            for (int i = 0; i < numStreams; i++)
            {
                NamedWindowProcessorInstance instance = processors[i].getProcessorInstance(agentInstanceContext);
                if (instance == null) {
                    throw new UnsupportedOperationException("Joins against named windows that are under context are not supported");
                }
                viewablePerStream[i] = instance.getTailViewInstance();
            }


            JoinSetComposerDesc joinSetComposerDesc = joinSetComposerPrototype.create(viewablePerStream, true, agentInstanceContext);
            JoinSetComposer joinComposer = joinSetComposerDesc.getJoinSetComposer();
            JoinSetFilter joinFilter;

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                if (streamSpec instanceof NamedWindowConsumerStreamSpec)
                {
                    hasNamedWindow = true;
                    final NamedWindowConsumerStreamSpec namedSpec = (NamedWindowConsumerStreamSpec) streamSpec;
                    NamedWindowProcessor processor = services.getNamedWindowService().getProcessor(namedSpec.getWindowName());
                    NamedWindowProcessorInstance processorInstance = processor.getProcessorInstance(agentInstanceContext);
                    if (processorInstance != null) {
                        final NamedWindowTailViewInstance consumerView = processorInstance.getTailViewInstance();
                        namedWindowTailViews[i] = consumerView;
                        final NamedWindowConsumerView view = (NamedWindowConsumerView) viewableActivationResult[i].getViewable();


                        // determine preload/postload filter for index access
                        if (!namedSpec.getFilterExpressions().isEmpty()) {

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                    subselectAggregationPreprocessor = new SubselectAggregationPreprocessorFilteredGrouped(aggregationService, filterExprEval, groupByKeys);
                }
            }
        }


        NamedWindowProcessorInstance processorInstanceSubq = processor.getProcessorInstance(agentInstanceContext);
        SubordTableLookupStrategy namedWindowSubqueryLookup = processorInstanceSubq.getRootViewInstance()
                .getAddSubqueryLookupStrategy(agentInstanceContext, outerEventTypesSelect, joinedPropPlan, fullTableScan, subqueryNum, optionalIndexHint);
        stopCallbackList.add(new NamedWindowSubqueryStopCallback(processorInstanceSubq, namedWindowSubqueryLookup));


        return new SubSelectStrategyRealization(namedWindowSubqueryLookup, subselectAggregationPreprocessor, aggregationService, Collections.<ExprPriorNode, ExprPriorEvalStrategy>emptyMap(), Collections.<ExprPreviousNode, ExprPreviousEvalStrategy>emptyMap(), null, null);
    }

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            NamedWindowProcessor processor = services.getNamedWindowService().getProcessor(namedSpec.getWindowName());
            if (processor == null) {
                throw new RuntimeException("Failed to find named window by name '" + namedSpec.getWindowName() + "'");
            }


            NamedWindowProcessorInstance processorInstance = processor.getProcessorInstance(agentInstanceContext);
            if (processorInstance == null) {
                throw new EPException("Named window '" + namedSpec.getWindowName() + "' is associated to context '" + processor.getContextName() + "' that is not available for querying");
            }
            NamedWindowTailViewInstance consumerView = processorInstance.getTailViewInstance();


            // preload view for stream
            Collection<EventBean> eventsInWindow;
            if (namedSpec.getFilterExpressions() != null && !namedSpec.getFilterExpressions().isEmpty()) {

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                Pair<ResultSetProcessor, AggregationService> pair = EPStatementStartMethodHelperUtil.startResultSetAndAggregation(resultSetProcessorPrototype, agentInstanceContext);
                aggregationService = pair.getSecond();


                // get named window processor instance
                NamedWindowProcessor processor = services.getNamedWindowService().getProcessor(onTriggerWindowDesc.getWindowName());
                NamedWindowProcessorInstance processorInstance = processor.getProcessorInstance(agentInstanceContext);


                // obtain on-expr view
                NamedWindowOnExprBaseView onExprBaseView = processorInstance.getRootViewInstance().addOnExpr(onExprFactory, agentInstanceContext, validatedJoin, activatorResultEventType, pair.getFirst(), onTriggerWindowDesc.getOptionalAsName(), excludePlanHint, indexHint);
                onExprView = onExprBaseView;
                stopCallbacks.add(onExprBaseView);
            }
            // variable assignments
            else if (statementSpec.getOnTriggerDesc() instanceof OnTriggerSetDesc)

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        final CreateIndexDesc spec = statementSpec.getCreateIndexDesc();
        final NamedWindowProcessor processor = services.getNamedWindowService().getProcessor(spec.getWindowName());
        if (processor == null) {
            throw new ExprValidationException("A named window by name '" + spec.getWindowName() + "' does not exist");
        }
        final NamedWindowProcessorInstance processorInstance = processor.getProcessorInstance(getDefaultAgentInstanceContext(statementContext));


        EPStatementStopMethod stopMethod;
        if (processor.isVirtualDataWindow()) {
            final VirtualDWView virtualDWView = processorInstance.getRootViewInstance().getVirtualDataWindow();
            virtualDWView.handleStartIndex(spec);
            stopMethod = new EPStatementStopMethod() {
                public void stop() {
                    virtualDWView.handleStopIndex(spec);
                }
            };
        }
        else {
            processorInstance.getRootViewInstance().addExplicitIndex(spec.isUnique(), spec.getWindowName(), spec.getIndexName(), spec.getColumns());
            stopMethod = new EPStatementStopMethod() {
                public void stop()
                {
                    processorInstance.getRootViewInstance().removeExplicitIndex(spec.getIndexName());
                }
            };
        }


        Viewable viewable = new ViewableDefaultImpl(processor.getNamedWindowType());

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        if (numStreams > 1)
        {
            StreamJoinAnalysisResult streamJoinAnalysisResult = new StreamJoinAnalysisResult(numStreams);
            Arrays.fill(streamJoinAnalysisResult.getNamedWindow(), true);
            for (int i = 0; i < numStreams; i++) {
                NamedWindowProcessorInstance processorInstance = processors[i].getProcessorInstance(agentInstanceContext);
                if (processors[i].isVirtualDataWindow()) {
                    streamJoinAnalysisResult.getViewExternal()[i] = processorInstance.getRootViewInstance().getVirtualDataWindow();
                }
                String[][] uniqueIndexes = processors[i].getUniqueIndexes(processorInstance);
                streamJoinAnalysisResult.getUniqueKeys()[i] = uniqueIndexes;
            }

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        // context partition runtime query
        Collection<Integer> agentInstanceIds = EPPreparedExecuteMethodHelper.getAgentInstanceIds(processors[0], singleSelector, services.getContextManagementService(), statementSpec.getOptionalContextName());


        // collect events and agent instances
        for (int agentInstanceId : agentInstanceIds) {
            NamedWindowProcessorInstance processorInstance = processors[0].getProcessorInstance(agentInstanceId);
            if (processorInstance != null) {
                Collection<EventBean> coll = processorInstance.getTailViewInstance().snapshot(filters[0], statementSpec.getAnnotations());
                contextPartitionResults.add(new ContextPartitionResult(coll, processorInstance.getTailViewInstance().getAgentInstanceContext()));
            }
        }


        // process context partitions
        ArrayDeque<EventBean[]> events = new ArrayDeque<EventBean[]>();

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        final StreamSpecCompiled streamSpec = statementSpec.getStreamSpecs()[streamNum];
        NamedWindowConsumerStreamSpec namedSpec = (NamedWindowConsumerStreamSpec) streamSpec;
        NamedWindowProcessor namedWindowProcessor = processors[streamNum];


        // handle the case of a single or matching agent instance
        NamedWindowProcessorInstance processorInstance = namedWindowProcessor.getProcessorInstance(agentInstanceContext);
        if (processorInstance != null) {
            return getStreamSnapshotInstance(streamNum, namedSpec, processorInstance);
        }


        // context partition runtime query
        Collection<Integer> contextPartitions = EPPreparedExecuteMethodHelper.getAgentInstanceIds(namedWindowProcessor, contextPartitionSelector, services.getContextManagementService(), namedWindowProcessor.getContextName());


        // collect events
        ArrayDeque<EventBean> events = new ArrayDeque<EventBean>();
        for (int agentInstanceId : contextPartitions) {
            processorInstance = namedWindowProcessor.getProcessorInstance(agentInstanceId);
            if (processorInstance != null) {
                Collection<EventBean> coll = processorInstance.getTailViewInstance().snapshot(filters[streamNum], statementSpec.getAnnotations());
                events.addAll(coll);
            }
        }
        return events;
    }

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Related Classes of com.espertech.esper.epl.named.NamedWindowProcessorInstance

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.StatementAgentInstancePostLoad

com.espertech.esper.core.context.subselect.SubSelectStrategyFactoryLocalViewPreloaded

com.espertech.esper.core.context.subselect.SubSelectStrategyFactoryNamedWinIndexShare

com.espertech.esper.core.start.EPPreparedExecuteMethod

com.espertech.esper.core.start.EPPreparedExecuteMethodQuery

com.espertech.esper.core.start.EPPreparedExecuteSingleStream

com.espertech.esper.core.start.EPStatementStartMethodCreateIndex

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