Package com.espertech.esper.view

Examples of com.espertech.esper.view.ViewFactoryChain

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            else if (filterStreamSpec instanceof NamedWindowConsumerStreamSpec)
            {
                subselecteventTypeName = ((NamedWindowConsumerStreamSpec) filterStreamSpec).getWindowName();
            }

            ViewFactoryChain viewFactoryChain = subSelectStreamDesc.getViewFactoryChain(subselect);
            EventType eventType = viewFactoryChain.getEventType();

            // determine a stream name unless one was supplied
            String subexpressionStreamName = filterStreamSpec.getOptionalStreamName();
            int subselectStreamNumber = subSelectStreamDesc.getStreamNumber(subselect);
            if (subexpressionStreamName == null)
            {
                subexpressionStreamName = "$subselect_" + subselectStreamNumber;
            }

            // Named windows don't allow data views
            if (filterStreamSpec instanceof NamedWindowConsumerStreamSpec)
            {
                EPStatementStartMethodHelperValidate.validateNoDataWindowOnNamedWindow(viewFactoryChain.getViewFactoryChain());
            }

            // Expression declarations are copies of a predefined expression body with their own stream context.
            // Should only be invoked if the subselect belongs to that instance.
            if (!declaredExpressions.isEmpty()) {
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        throws ExprValidationException {

        StatementSpecCompiled statementSpec = subselect.getStatementSpecCompiled();
        StreamSpecCompiled filterStreamSpec = statementSpec.getStreamSpecs().get(0);

        ViewFactoryChain viewFactoryChain;
        String subselecteventTypeName = null;

        // construct view factory chain
        try {
            if (statementSpec.getStreamSpecs().get(0) instanceof FilterStreamSpecCompiled)
            {
                FilterStreamSpecCompiled filterStreamSpecCompiled = (FilterStreamSpecCompiled) statementSpec.getStreamSpecs().get(0);
                subselecteventTypeName = filterStreamSpecCompiled.getFilterSpec().getFilterForEventTypeName();

                // A child view is required to limit the stream
                if (filterStreamSpec.getViewSpecs().size() == 0)
                {
                    throw new ExprValidationException("Subqueries require one or more views to limit the stream, consider declaring a length or time window");
                }

                // Register filter, create view factories
                viewFactoryChain = statementContext.getViewService().createFactories(subselectStreamNumber, filterStreamSpecCompiled.getFilterSpec().getResultEventType(), filterStreamSpec.getViewSpecs(), filterStreamSpec.getOptions(), statementContext);
                subselect.setRawEventType(viewFactoryChain.getEventType());
            }
            else
            {
                NamedWindowConsumerStreamSpec namedSpec = (NamedWindowConsumerStreamSpec) statementSpec.getStreamSpecs().get(0);
                NamedWindowProcessor processor = statementContext.getNamedWindowService().getProcessor(namedSpec.getWindowName());
                viewFactoryChain = statementContext.getViewService().createFactories(0, processor.getNamedWindowType(), namedSpec.getViewSpecs(), namedSpec.getOptions(), statementContext);
                subselecteventTypeName = namedSpec.getWindowName();
            }
        }
        catch (ViewProcessingException ex) {
            throw new ExprValidationException("Error validating subexpression: " + ex.getMessage(), ex);
        }

        // the final event type
        EventType eventType = viewFactoryChain.getEventType();

        // determine a stream name unless one was supplied
        String subexpressionStreamName = filterStreamSpec.getOptionalStreamName();
        if (subexpressionStreamName == null)
        {
            subexpressionStreamName = "$subselect_" + subselectStreamNumber;
        }

        // Named windows don't allow data views
        if (filterStreamSpec instanceof NamedWindowConsumerStreamSpec)
        {
            EPStatementStartMethodHelperValidate.validateNoDataWindowOnNamedWindow(viewFactoryChain.getViewFactoryChain());
        }

        // Streams event types are the original stream types with the stream zero the subselect stream
        LinkedHashMap<String, Pair<EventType, String>> namesAndTypes = new LinkedHashMap<String, Pair<EventType, String>>();
        namesAndTypes.put(subexpressionStreamName, new Pair<EventType, String>(eventType, subselecteventTypeName));
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                SQLOutputRowConversion outputRowConversionHook = (SQLOutputRowConversion) JavaClassHelper.getAnnotationHook(statementSpec.getAnnotations(), HookType.SQLROW, SQLOutputRowConversion.class, statementContext.getMethodResolutionService());
                EPStatementAgentInstanceHandle epStatementAgentInstanceHandle = defaultAgentInstanceContext.getEpStatementAgentInstanceHandle();
                final HistoricalEventViewable historicalEventViewable = DatabasePollingViewableFactory.createDBStatementView(statementContext.getStatementId(), i, sqlStreamSpec, services.getDatabaseRefService(), services.getEventAdapterService(), epStatementAgentInstanceHandle, typeConversionHook, outputRowConversionHook,
                        statementContext.getConfigSnapshot().getEngineDefaults().getLogging().isEnableJDBC());
                historicalEventViewables[i] = historicalEventViewable;
                unmaterializedViewChain[i] = new ViewFactoryChain(historicalEventViewable.getEventType(), new LinkedList<ViewFactory>());
                eventStreamParentViewableActivators[i] = new ViewableActivator() {
                    public ViewableActivationResult activate(AgentInstanceContext agentInstanceContext, boolean isSubselect) {
                        return new ViewableActivationResult(historicalEventViewable, CollectionUtil.STOP_CALLBACK_NONE, null);
                    }
                };
                stopCallbacks.add(historicalEventViewable);
            }
            else if (streamSpec instanceof MethodStreamSpec)
            {
                if (!streamSpec.getViewSpecs().isEmpty())
                {
                    throw new ExprValidationException("Method data joins do not allow views onto the data, view '"
                            + streamSpec.getViewSpecs().get(0).getObjectNamespace() + ':' + streamSpec.getViewSpecs().get(0).getObjectName() + "' is not valid in this context");
                }

                MethodStreamSpec methodStreamSpec = (MethodStreamSpec) streamSpec;
                EPStatementAgentInstanceHandle epStatementAgentInstanceHandle = defaultAgentInstanceContext.getEpStatementAgentInstanceHandle();
                final HistoricalEventViewable historicalEventViewable = MethodPollingViewableFactory.createPollMethodView(i, methodStreamSpec, services.getEventAdapterService(), epStatementAgentInstanceHandle, statementContext.getMethodResolutionService(), services.getEngineImportService(), statementContext.getSchedulingService(), statementContext.getScheduleBucket(), evaluatorContextStmt);
                historicalEventViewables[i] = historicalEventViewable;
                unmaterializedViewChain[i] = new ViewFactoryChain(historicalEventViewable.getEventType(), new LinkedList<ViewFactory>());
                eventStreamParentViewableActivators[i] = new ViewableActivator() {
                    public ViewableActivationResult activate(AgentInstanceContext agentInstanceContext, boolean isSubselect) {
                        return new ViewableActivationResult(historicalEventViewable, CollectionUtil.STOP_CALLBACK_NONE, null);
                    }
                };
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                SQLOutputRowConversion outputRowConversionHook = (SQLOutputRowConversion) JavaClassHelper.getAnnotationHook(statementSpec.getAnnotations(), HookType.SQLROW, SQLOutputRowConversion.class, statementContext.getMethodResolutionService());
                EPStatementAgentInstanceHandle epStatementAgentInstanceHandle = defaultAgentInstanceContext.getEpStatementAgentInstanceHandle();
                final HistoricalEventViewable historicalEventViewable = DatabasePollingViewableFactory.createDBStatementView(statementContext.getStatementId(), i, sqlStreamSpec, services.getDatabaseRefService(), services.getEventAdapterService(), epStatementAgentInstanceHandle, typeConversionHook, outputRowConversionHook,
                        statementContext.getConfigSnapshot().getEngineDefaults().getLogging().isEnableJDBC());
                historicalEventViewables[i] = historicalEventViewable;
                unmaterializedViewChain[i] = new ViewFactoryChain(historicalEventViewable.getEventType(), new LinkedList<ViewFactory>());
                eventStreamParentViewableActivators[i] = new ViewableActivator() {
                    public ViewableActivationResult activate(AgentInstanceContext agentInstanceContext, boolean isSubselect, boolean isRecoveringResilient) {
                        return new ViewableActivationResult(historicalEventViewable, CollectionUtil.STOP_CALLBACK_NONE, null, null, false, false);
                    }
                };
                stopCallbacks.add(historicalEventViewable);
            }
            else if (streamSpec instanceof MethodStreamSpec)
            {
                if (streamSpec.getViewSpecs().length > 0)
                {
                    throw new ExprValidationException("Method data joins do not allow views onto the data, view '"
                            + streamSpec.getViewSpecs()[0].getObjectNamespace() + ':' + streamSpec.getViewSpecs()[0].getObjectName() + "' is not valid in this context");
                }

                MethodStreamSpec methodStreamSpec = (MethodStreamSpec) streamSpec;
                EPStatementAgentInstanceHandle epStatementAgentInstanceHandle = defaultAgentInstanceContext.getEpStatementAgentInstanceHandle();
                final HistoricalEventViewable historicalEventViewable = MethodPollingViewableFactory.createPollMethodView(i, methodStreamSpec, services.getEventAdapterService(), epStatementAgentInstanceHandle, statementContext.getMethodResolutionService(), services.getEngineImportService(), statementContext.getSchedulingService(), statementContext.getScheduleBucket(), evaluatorContextStmt);
                historicalEventViewables[i] = historicalEventViewable;
                unmaterializedViewChain[i] = new ViewFactoryChain(historicalEventViewable.getEventType(), new LinkedList<ViewFactory>());
                eventStreamParentViewableActivators[i] = new ViewableActivator() {
                    public ViewableActivationResult activate(AgentInstanceContext agentInstanceContext, boolean isSubselect, boolean isRecoveringResilient) {
                        return new ViewableActivationResult(historicalEventViewable, CollectionUtil.STOP_CALLBACK_NONE, null, null, false, false);
                    }
                };
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        throws ExprValidationException {

        StatementSpecCompiled statementSpec = subselect.getStatementSpecCompiled();
        StreamSpecCompiled filterStreamSpec = statementSpec.getStreamSpecs()[0];

        ViewFactoryChain viewFactoryChain;
        String subselecteventTypeName = null;

        // construct view factory chain
        try {
            if (statementSpec.getStreamSpecs()[0] instanceof FilterStreamSpecCompiled)
            {
                FilterStreamSpecCompiled filterStreamSpecCompiled = (FilterStreamSpecCompiled) statementSpec.getStreamSpecs()[0];
                subselecteventTypeName = filterStreamSpecCompiled.getFilterSpec().getFilterForEventTypeName();

                // A child view is required to limit the stream
                if (filterStreamSpec.getViewSpecs().length == 0)
                {
                    throw new ExprValidationException("Subqueries require one or more views to limit the stream, consider declaring a length or time window");
                }

                // Register filter, create view factories
                viewFactoryChain = statementContext.getViewService().createFactories(subselectStreamNumber, filterStreamSpecCompiled.getFilterSpec().getResultEventType(), filterStreamSpec.getViewSpecs(), filterStreamSpec.getOptions(), statementContext);
                subselect.setRawEventType(viewFactoryChain.getEventType());
            }
            else
            {
                NamedWindowConsumerStreamSpec namedSpec = (NamedWindowConsumerStreamSpec) statementSpec.getStreamSpecs()[0];
                NamedWindowProcessor processor = statementContext.getNamedWindowService().getProcessor(namedSpec.getWindowName());
                viewFactoryChain = statementContext.getViewService().createFactories(0, processor.getNamedWindowType(), namedSpec.getViewSpecs(), namedSpec.getOptions(), statementContext);
                subselecteventTypeName = namedSpec.getWindowName();
            }
        }
        catch (ViewProcessingException ex) {
            throw new ExprValidationException("Error validating subexpression: " + ex.getMessage(), ex);
        }

        // the final event type
        EventType eventType = viewFactoryChain.getEventType();

        // determine a stream name unless one was supplied
        String subexpressionStreamName = filterStreamSpec.getOptionalStreamName();
        if (subexpressionStreamName == null)
        {
            subexpressionStreamName = "$subselect_" + subselectStreamNumber;
        }

        // Named windows don't allow data views
        if (filterStreamSpec instanceof NamedWindowConsumerStreamSpec)
        {
            EPStatementStartMethodHelperValidate.validateNoDataWindowOnNamedWindow(viewFactoryChain.getViewFactoryChain());
        }

        // Streams event types are the original stream types with the stream zero the subselect stream
        LinkedHashMap<String, Pair<EventType, String>> namesAndTypes = new LinkedHashMap<String, Pair<EventType, String>>();
        namesAndTypes.put(subexpressionStreamName, new Pair<EventType, String>(eventType, subselecteventTypeName));
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                subselectStreamNumber++;

                // Register filter, create view factories
                ViewableActivator activatorDeactivator = new ViewableActivatorFilterProxy(services, filterStreamSpec.getFilterSpec(), statementSpec.getAnnotations(), true);
                ViewFactoryChain viewFactoryChain = services.getViewService().createFactories(subselectStreamNumber, filterStreamSpec.getFilterSpec().getResultEventType(), filterStreamSpec.getViewSpecs(), filterStreamSpec.getOptions(), statementContext);
                subselect.setRawEventType(viewFactoryChain.getEventType());

                // Add lookup to list, for later starts
                subSelectStreamDesc.add(subselect, new SubSelectActivationHolder(subselectStreamNumber, filterStreamSpec.getFilterSpec().getResultEventType(), viewFactoryChain, activatorDeactivator, streamSpec));
            }
            else
            {
                NamedWindowConsumerStreamSpec namedSpec = (NamedWindowConsumerStreamSpec) statementSpec.getStreamSpecs().get(0);
                NamedWindowProcessor processor = services.getNamedWindowService().getProcessor(namedSpec.getWindowName());
                EventType namedWindowType = processor.getTailView().getEventType();
                if (namedSpec.getOptPropertyEvaluator() != null) {
                    namedWindowType = namedSpec.getOptPropertyEvaluator().getFragmentEventType();
                }

                // if named-window index sharing is disabled (the default) or filter expressions are provided then consume the insert-remove stream
                boolean disableIndexShare = HintEnum.DISABLE_WINDOW_SUBQUERY_INDEXSHARE.getHint(statementSpecContainer.getAnnotations()) != null;
                if (!namedSpec.getFilterExpressions().isEmpty() || !processor.isEnableSubqueryIndexShare() || disableIndexShare) {
                    ViewableActivatorNamedWindow activatorNamedWindow = new ViewableActivatorNamedWindow(processor, namedSpec.getFilterExpressions(), namedSpec.getOptPropertyEvaluator());
                    ViewFactoryChain viewFactoryChain = services.getViewService().createFactories(0, namedWindowType, namedSpec.getViewSpecs(), namedSpec.getOptions(), statementContext);
                    subselect.setRawEventType(viewFactoryChain.getEventType());
                    subSelectStreamDesc.add(subselect, new SubSelectActivationHolder(subselectStreamNumber, namedWindowType, viewFactoryChain, activatorNamedWindow, streamSpec));
                }
                // else if there are no named window stream filter expressions and index sharing is enabled
                else {
                    ViewFactoryChain viewFactoryChain = services.getViewService().createFactories(0, processor.getNamedWindowType(), namedSpec.getViewSpecs(), namedSpec.getOptions(), statementContext);
                    subselect.setRawEventType(processor.getNamedWindowType());
                    ViewableActivatorSubselectNone activator = new ViewableActivatorSubselectNone();
                    subSelectStreamDesc.add(subselect, new SubSelectActivationHolder(subselectStreamNumber, namedWindowType, viewFactoryChain, activator, streamSpec));
                }
            }
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            else if (filterStreamSpec instanceof NamedWindowConsumerStreamSpec)
            {
                subselecteventTypeName = ((NamedWindowConsumerStreamSpec) filterStreamSpec).getWindowName();
            }

            ViewFactoryChain viewFactoryChain = subSelectStreamDesc.getViewFactoryChain(subselect);
            EventType eventType = viewFactoryChain.getEventType();

            // determine a stream name unless one was supplied
            String subexpressionStreamName = filterStreamSpec.getOptionalStreamName();
            int subselectStreamNumber = subSelectStreamDesc.getStreamNumber(subselect);
            if (subexpressionStreamName == null)
            {
                subexpressionStreamName = "$subselect_" + subselectStreamNumber;
            }

            // Named windows don't allow data views
            if (filterStreamSpec instanceof NamedWindowConsumerStreamSpec)
            {
                EPStatementStartMethodHelperValidate.validateNoDataWindowOnNamedWindow(viewFactoryChain.getViewFactoryChain());
            }

            // Expression declarations are copies of a predefined expression body with their own stream context.
            // Should only be invoked if the subselect belongs to that instance.
            if (!declaredExpressions.isEmpty()) {
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        throws ExprValidationException {

        StatementSpecCompiled statementSpec = subselect.getStatementSpecCompiled();
        StreamSpecCompiled filterStreamSpec = statementSpec.getStreamSpecs().get(0);

        ViewFactoryChain viewFactoryChain;
        String subselecteventTypeName = null;

        // construct view factory chain
        try {
            if (statementSpec.getStreamSpecs().get(0) instanceof FilterStreamSpecCompiled)
            {
                FilterStreamSpecCompiled filterStreamSpecCompiled = (FilterStreamSpecCompiled) statementSpec.getStreamSpecs().get(0);
                subselecteventTypeName = filterStreamSpecCompiled.getFilterSpec().getFilterForEventTypeName();

                // A child view is required to limit the stream
                if (filterStreamSpec.getViewSpecs().size() == 0)
                {
                    throw new ExprValidationException("Subqueries require one or more views to limit the stream, consider declaring a length or time window");
                }

                // Register filter, create view factories
                viewFactoryChain = statementContext.getViewService().createFactories(subselectStreamNumber, filterStreamSpecCompiled.getFilterSpec().getResultEventType(), filterStreamSpec.getViewSpecs(), filterStreamSpec.getOptions(), statementContext);
                subselect.setRawEventType(viewFactoryChain.getEventType());
            }
            else
            {
                NamedWindowConsumerStreamSpec namedSpec = (NamedWindowConsumerStreamSpec) statementSpec.getStreamSpecs().get(0);
                NamedWindowProcessor processor = statementContext.getNamedWindowService().getProcessor(namedSpec.getWindowName());
                viewFactoryChain = statementContext.getViewService().createFactories(0, processor.getNamedWindowType(), namedSpec.getViewSpecs(), namedSpec.getOptions(), statementContext);
                subselecteventTypeName = namedSpec.getWindowName();
            }
        }
        catch (ViewProcessingException ex) {
            throw new ExprValidationException("Error validating subexpression: " + ex.getMessage(), ex);
        }

        // the final event type
        EventType eventType = viewFactoryChain.getEventType();

        // determine a stream name unless one was supplied
        String subexpressionStreamName = filterStreamSpec.getOptionalStreamName();
        if (subexpressionStreamName == null)
        {
            subexpressionStreamName = "$subselect_" + subselectStreamNumber;
        }

        // Named windows don't allow data views
        if (filterStreamSpec instanceof NamedWindowConsumerStreamSpec)
        {
            EPStatementStartMethodHelperValidate.validateNoDataWindowOnNamedWindow(viewFactoryChain.getViewFactoryChain());
        }

        // Streams event types are the original stream types with the stream zero the subselect stream
        LinkedHashMap<String, Pair<EventType, String>> namesAndTypes = new LinkedHashMap<String, Pair<EventType, String>>();
        namesAndTypes.put(subexpressionStreamName, new Pair<EventType, String>(eventType, subselecteventTypeName));
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                subselectStreamNumber++;

                // Register filter, create view factories
                ViewableActivator activatorDeactivator = new ViewableActivatorFilterProxy(services, filterStreamSpec.getFilterSpec(), statementSpec.getAnnotations(), true);
                ViewFactoryChain viewFactoryChain = services.getViewService().createFactories(subselectStreamNumber, filterStreamSpec.getFilterSpec().getResultEventType(), filterStreamSpec.getViewSpecs(), filterStreamSpec.getOptions(), statementContext);
                subselect.setRawEventType(viewFactoryChain.getEventType());

                // Add lookup to list, for later starts
                subSelectStreamDesc.add(subselect, new SubSelectActivationHolder(subselectStreamNumber, filterStreamSpec.getFilterSpec().getResultEventType(), viewFactoryChain, activatorDeactivator, streamSpec));
            }
            else
            {
                NamedWindowConsumerStreamSpec namedSpec = (NamedWindowConsumerStreamSpec) statementSpec.getStreamSpecs().get(0);
                NamedWindowProcessor processor = services.getNamedWindowService().getProcessor(namedSpec.getWindowName());
                EventType namedWindowType = processor.getTailView().getEventType();
                if (namedSpec.getOptPropertyEvaluator() != null) {
                    namedWindowType = namedSpec.getOptPropertyEvaluator().getFragmentEventType();
                }

                // if named-window index sharing is disabled (the default) or filter expressions are provided then consume the insert-remove stream
                boolean disableIndexShare = HintEnum.DISABLE_WINDOW_SUBQUERY_INDEXSHARE.getHint(statementSpecContainer.getAnnotations()) != null;
                if (!namedSpec.getFilterExpressions().isEmpty() || !processor.isEnableSubqueryIndexShare() || disableIndexShare) {
                    ViewableActivatorNamedWindow activatorNamedWindow = new ViewableActivatorNamedWindow(processor, namedSpec.getFilterExpressions(), namedSpec.getOptPropertyEvaluator());
                    ViewFactoryChain viewFactoryChain = services.getViewService().createFactories(0, namedWindowType, namedSpec.getViewSpecs(), namedSpec.getOptions(), statementContext);
                    subselect.setRawEventType(viewFactoryChain.getEventType());
                    subSelectStreamDesc.add(subselect, new SubSelectActivationHolder(subselectStreamNumber, namedWindowType, viewFactoryChain, activatorNamedWindow, streamSpec));
                }
                // else if there are no named window stream filter expressions and index sharing is enabled
                else {
                    ViewFactoryChain viewFactoryChain = services.getViewService().createFactories(0, processor.getNamedWindowType(), namedSpec.getViewSpecs(), namedSpec.getOptions(), statementContext);
                    subselect.setRawEventType(processor.getNamedWindowType());
                    ViewableActivatorSubselectNone activator = new ViewableActivatorSubselectNone();
                    subSelectStreamDesc.add(subselect, new SubSelectActivationHolder(subselectStreamNumber, namedWindowType, viewFactoryChain, activator, streamSpec));
                }
            }
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            else if (filterStreamSpec instanceof NamedWindowConsumerStreamSpec)
            {
                subselecteventTypeName = ((NamedWindowConsumerStreamSpec) filterStreamSpec).getWindowName();
            }

            ViewFactoryChain viewFactoryChain = subSelectStreamDesc.getViewFactoryChain(subselect);
            EventType eventType = viewFactoryChain.getEventType();

            // determine a stream name unless one was supplied
            String subexpressionStreamName = filterStreamSpec.getOptionalStreamName();
            int subselectStreamNumber = subSelectStreamDesc.getStreamNumber(subselect);
            if (subexpressionStreamName == null)
            {
                subexpressionStreamName = "$subselect_" + subselectStreamNumber;
            }

            // Named windows don't allow data views
            if (filterStreamSpec instanceof NamedWindowConsumerStreamSpec)
            {
                EPStatementStartMethodHelperValidate.validateNoDataWindowOnNamedWindow(viewFactoryChain.getViewFactoryChain());
            }

            // Expression declarations are copies of a predefined expression body with their own stream context.
            // Should only be invoked if the subselect belongs to that instance.
            if (!declaredExpressions.isEmpty()) {
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Related Classes of com.espertech.esper.view.ViewFactoryChain

  • com.espertech.esper.core.start.EPStatementStartMethodHelperSubselect
  • com.espertech.esper.core.start.EPStatementStartMethodSelectUtil
  • com.espertech.esper.epl.core.ViewResourceDelegateImpl
  • com.espertech.esper.filter.FilterSpecCompiler
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