Package com.espertech.esper.core.context.stmt

Examples of com.espertech.esper.core.context.stmt.AIRegistryExpr

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            // hook up with listeners+subscribers
            startResult.getFinalView().addView(statement.getMergeView()); // hook output to merge view

            // assign agents for expression-node based strategies
            AIRegistryExpr aiExprSvc = statementContext.getStatementAgentInstanceRegistry().getAgentInstanceExprService();
            AIRegistryAggregation aiAggregationSvc = statementContext.getStatementAgentInstanceRegistry().getAgentInstanceAggregationService();

            // allocate aggregation service
            if (startResult.getOptionalAggegationService() != null) {
                aiAggregationSvc.assignService(agentInstanceId, startResult.getOptionalAggegationService());
            }

            // allocate subquery
            for (Map.Entry<ExprSubselectNode, SubSelectStrategyHolder> item : startResult.getSubselectStrategies().entrySet()) {
                ExprSubselectNode node = item.getKey();
                SubSelectStrategyHolder strategyHolder = item.getValue();

                aiExprSvc.getSubselectService(node).assignService(agentInstanceId, strategyHolder.getStategy());

                // allocate prior within subquery
                for (Map.Entry<ExprPriorNode, ExprPriorEvalStrategy> priorEntry : strategyHolder.getPriorStrategies().entrySet()) {
                    aiExprSvc.getPriorServices(priorEntry.getKey()).assignService(agentInstanceId, priorEntry.getValue());
                }

                // allocate previous within subquery
                for (Map.Entry<ExprPreviousNode, ExprPreviousEvalStrategy> prevEntry : strategyHolder.getPreviousNodeStrategies().entrySet()) {
                    aiExprSvc.getPreviousServices(prevEntry.getKey()).assignService(agentInstanceId, prevEntry.getValue());
                }
            }

            // allocate prior-expressions
            for (Map.Entry<ExprPriorNode, ExprPriorEvalStrategy> item : startResult.getPriorNodeStrategies().entrySet()) {
                aiExprSvc.getPriorServices(item.getKey()).assignService(agentInstanceId, item.getValue());
            }

            // allocate previous-expressions
            for (Map.Entry<ExprPreviousNode, ExprPreviousEvalStrategy> item : startResult.getPreviousNodeStrategies().entrySet()) {
                aiExprSvc.getPreviousServices(item.getKey()).assignService(agentInstanceId, item.getValue());
            }

            // execute preloads, if any
            for (StatementAgentInstancePreload preload : startResult.getPreloadList()) {
                preload.executePreload();
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        // With context - delegate instantiation to context
        if (statementSpec.getOptionalContextName() != null) {

            // use statement-wide agent-instance-specific subselects
            AIRegistryExpr aiRegistryExpr = statementContext.getStatementAgentInstanceRegistry().getAgentInstanceExprService();
            subselectStrategyInstances = new HashMap<ExprSubselectNode, SubSelectStrategyHolder>();
            for (ExprSubselectNode node : subSelectStrategyCollection.getSubqueries().keySet()) {
                AIRegistrySubselect specificService = aiRegistryExpr.allocateSubselect(node);
                node.setStrategy(specificService);
                subselectStrategyInstances.put(node, new SubSelectStrategyHolder(null, null, null, null, null, null));
            }

            ContextMergeView mergeView = new ContextMergeView(onExprView.getEventType());
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            // use statement-wide agent-instance-specific aggregation service
            aggregationService = statementContext.getStatementAgentInstanceRegistry().getAgentInstanceAggregationService();

            // use statement-wide agent-instance-specific subselects
            AIRegistryExpr aiRegistryExpr = statementContext.getStatementAgentInstanceRegistry().getAgentInstanceExprService();

            subselectStrategyInstances = new HashMap<ExprSubselectNode, SubSelectStrategyHolder>();
            for (Map.Entry<ExprSubselectNode, SubSelectStrategyFactoryDesc> entry : selectDesc.getSubSelectStrategyCollection().getSubqueries().entrySet()) {
                AIRegistrySubselect specificService = aiRegistryExpr.allocateSubselect(entry.getKey());
                entry.getKey().setStrategy(specificService);

                Map<ExprPriorNode, ExprPriorEvalStrategy> subselectPriorStrategies = new HashMap<ExprPriorNode, ExprPriorEvalStrategy>();
                for (ExprPriorNode subselectPrior : entry.getValue().getPriorNodesList()) {
                    AIRegistryPrior specificSubselectPriorService = aiRegistryExpr.allocatePrior(subselectPrior);
                    subselectPriorStrategies.put(subselectPrior, specificSubselectPriorService);
                }

                Map<ExprPreviousNode, ExprPreviousEvalStrategy> subselectPreviousStrategies = new HashMap<ExprPreviousNode, ExprPreviousEvalStrategy>();
                for (ExprPreviousNode subselectPrevious : entry.getValue().getPrevNodesList()) {
                    AIRegistryPrevious specificSubselectPreviousService = aiRegistryExpr.allocatePrevious(subselectPrevious);
                    subselectPreviousStrategies.put(subselectPrevious, specificSubselectPreviousService);
                }

                subselectStrategyInstances.put(entry.getKey(), new SubSelectStrategyHolder(specificService, aggregationService, subselectPriorStrategies, subselectPreviousStrategies, null, null));
            }

            // use statement-wide agent-instance-specific "prior"
            priorStrategyInstances = new HashMap<ExprPriorNode, ExprPriorEvalStrategy>();
            for (ExprPriorNode priorNode : selectDesc.getViewResourceDelegateUnverified().getPriorRequests()) {
                AIRegistryPrior specificService = aiRegistryExpr.allocatePrior(priorNode);
                priorStrategyInstances.put(priorNode, specificService);
            }

            // use statement-wide agent-instance-specific "previous"
            previousStrategyInstances = new HashMap<ExprPreviousNode, ExprPreviousEvalStrategy>();
            for (ExprPreviousNode previousNode : selectDesc.getViewResourceDelegateUnverified().getPreviousRequests()) {
                AIRegistryPrevious specificService = aiRegistryExpr.allocatePrevious(previousNode);
                previousStrategyInstances.put(previousNode, specificService);
            }

            ContextMergeView mergeView = new ContextMergeView(selectDesc.getResultSetProcessorPrototypeDesc().getResultSetProcessorFactory().getResultEventType());
            finalViewable = mergeView;
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            // use statement-wide agent-instance-specific aggregation service
            aggregationService = statementContext.getStatementAgentInstanceRegistry().getAgentInstanceAggregationService();

            // use statement-wide agent-instance-specific subselects
            AIRegistryExpr aiRegistryExpr = statementContext.getStatementAgentInstanceRegistry().getAgentInstanceExprService();
            subselectStrategyInstances = new HashMap<ExprSubselectNode, SubSelectStrategyHolder>();
            for (ExprSubselectNode node : subSelectStrategyCollection.getSubqueries().keySet()) {
                AIRegistrySubselect specificService = aiRegistryExpr.allocateSubselect(node);
                node.setStrategy(specificService);
                subselectStrategyInstances.put(node, new SubSelectStrategyHolder(specificService, null, null, null, null, null));
            }

            ContextMergeView mergeView = new ContextMergeView(resultSetProcessorPrototype.getResultSetProcessorFactory().getResultEventType());
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Related Classes of com.espertech.esper.core.context.stmt.AIRegistryExpr

  • com.espertech.esper.core.context.util.StatementAgentInstanceUtil
  • com.espertech.esper.core.start.EPStatementStartMethodOnTrigger
  • com.espertech.esper.core.start.EPStatementStartMethodSelect
  • com.espertech.esper.core.start.EPStatementStartMethodUpdate
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