Examples of ExprValidationException

com.espertech.esper.epl.expression.ExprValidationException
Thrown to indicate a validation error in a filter expression.

Examples of com.espertech.esper.epl.expression.ExprValidationException

                    String message = "Invalid assignment of column '" + columnNames[i] +
                            "' of type '" + columnType +
                            "' to event property '" + desc.getPropertyName() +
                            "' typed as '" + desc.getType().getName() +
                            "', column and parameter types mismatch";
                    throw new ExprValidationException(message);
                }
                else
                {
                    widener = TypeWidenerFactory.getCheckPropertyAssignType(columnNames[i], (Class) columnType, desc.getType(), desc.getPropertyName());
                }


                selectedWritable = desc;
                break;
            }


            if (selectedWritable == null)
            {
                String message = "Column '" + columnNames[i] +
                        "' could not be assigned to any of the properties of the underlying type (missing column names, event property, setter method or constructor?)";
                throw new ExprValidationException(message);
            }


            // add
            writablePropertiesList.add(selectedWritable);
            evaluatorsList.add(evaluator);
            widenersList.add(widener);
        }


        // handle wildcard
        if (isUsingWildcard)
        {
            EventType sourceType = typeService.getEventTypes()[0];
            for (EventPropertyDescriptor eventPropDescriptor : sourceType.getPropertyDescriptors())
            {
                if (eventPropDescriptor.isRequiresIndex() || (eventPropDescriptor.isRequiresMapkey()))
                {
                    continue;
                }


                WriteablePropertyDescriptor selectedWritable = null;
                TypeWidener widener = null;
                ExprEvaluator evaluator = null;


                for (WriteablePropertyDescriptor writableDesc : writables)
                {
                    if (!writableDesc.getPropertyName().equals(eventPropDescriptor.getPropertyName()))
                    {
                        continue;
                    }


                    widener = TypeWidenerFactory.getCheckPropertyAssignType(eventPropDescriptor.getPropertyName(), eventPropDescriptor.getPropertyType(), writableDesc.getType(), writableDesc.getPropertyName());
                    selectedWritable = writableDesc;


                    final String propertyName = eventPropDescriptor.getPropertyName();
                    final Class propertyType = eventPropDescriptor.getPropertyType();
                    evaluator = new ExprEvaluator() {


                        public Object evaluate(EventBean[] eventsPerStream, boolean isNewData,ExprEvaluatorContext exprEvaluatorContext)
                        {
                            EventBean theEvent = eventsPerStream[0];
                            if (theEvent != null)
                            {
                                return theEvent.get(propertyName);
                            }
                            return null;
                        }


                        public Class getType()
                        {
                            return propertyType;
                        }
                        public Map<String, Object> getEventType() {
                            return null;
                        }
                    };
                    break;
                }


                if (selectedWritable == null)
                {
                    String message = "Event property '" + eventPropDescriptor.getPropertyName() +
                            "' could not be assigned to any of the properties of the underlying type (missing column names, event property, setter method or constructor?)";
                    throw new ExprValidationException(message);
                }


                writablePropertiesList.add(selectedWritable);
                evaluatorsList.add(evaluator);
                widenersList.add(widener);
            }
        }


        // assign
        WriteablePropertyDescriptor[] writableProperties = writablePropertiesList.toArray(new WriteablePropertyDescriptor[writablePropertiesList.size()]);
        ExprEvaluator[] exprEvaluators = evaluatorsList.toArray(new ExprEvaluator[evaluatorsList.size()]);
        TypeWidener[] wideners = widenersList.toArray(new TypeWidener[widenersList.size()]);


        EventBeanManufacturer eventManufacturer;
        try
        {
            eventManufacturer = eventAdapterService.getManufacturer(eventType, writableProperties, engineImportService);
        }
        catch (EventBeanManufactureException e)
        {
            throw new ExprValidationException(e.getMessage(), e);
        }


        return new SelectExprInsertNativeWidening(eventType, eventManufacturer, exprEvaluators, wideners);
    }

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Examples of com.espertech.esper.epl.expression.ExprValidationException

                continue;
            }


            String message = "Invalid assignment of expression " + i + " returning type '" + columnType +
                    "', column and parameter types mismatch";
            throw new ExprValidationException(message);
        }


        FastConstructor fctor;
        try {
            Constructor ctor = engineImportService.resolveCtor(beanEventType.getUnderlyingType(), ctorTypes);
            FastClass fastClass = FastClass.create(beanEventType.getUnderlyingType());
            fctor = fastClass.getConstructor(ctor);
        }
        catch (EngineImportException ex) {
            throw new ExprValidationException("Failed to find a suitable constructor for bean-event type '" + eventType.getName() + "': " + ex.getMessage(), ex);
        }


        EventBeanManufacturerCtor eventManufacturer = new EventBeanManufacturerCtor(fctor, beanEventType, eventAdapterService);
        return new SelectExprInsertNativeNoWiden(eventType, eventManufacturer, evaluators);
    }

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Examples of com.espertech.esper.epl.expression.ExprValidationException


            if (selectedWritable == null)
            {
                String message = "Stream underlying object for stream '" + streamNames[i] +
                        "' could not be assigned to any of the properties of the underlying type (missing column names, event property or setter method?)";
                throw new ExprValidationException(message);
            }


            final int streamNum = i;
            final Class returnType = streamTypes[streamNum].getUnderlyingType();
            ExprEvaluator evaluator = new ExprEvaluator() {
                public Object evaluate(EventBean[] eventsPerStream, boolean isNewData, ExprEvaluatorContext exprEvaluatorContext)
                {
                    EventBean theEvent = eventsPerStream[streamNum];
                    if (theEvent != null)
                    {
                        return theEvent.getUnderlying();
                    }
                    return null;
                }


                public Class getType()
                {
                    return returnType;
                }


                public Map<String, Object> getEventType() {
                    return null;
                }
            };


            // add
            writablePropertiesList.add(selectedWritable);
            evaluatorsList.add(evaluator);
            widenersList.add(widener);
        }


        // assign
        WriteablePropertyDescriptor[] writableProperties = writablePropertiesList.toArray(new WriteablePropertyDescriptor[writablePropertiesList.size()]);
        ExprEvaluator[] exprEvaluators = evaluatorsList.toArray(new ExprEvaluator[evaluatorsList.size()]);
        TypeWidener[] wideners = widenersList.toArray(new TypeWidener[widenersList.size()]);


        EventBeanManufacturer eventManufacturer;
        try
        {
            eventManufacturer = eventAdapterService.getManufacturer(eventType, writableProperties, engineImportService);
        }
        catch (EventBeanManufactureException e)
        {
            throw new ExprValidationException(e.getMessage(), e);
        }


        return new SelectExprInsertNativeWidening(eventType, eventManufacturer, exprEvaluators, wideners);
    }

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Examples of com.espertech.esper.epl.expression.ExprValidationException

     * @throws com.espertech.esper.epl.expression.ExprValidationException if the index fails to be valid
     */
    public synchronized void addExplicitIndex(boolean unique, String namedWindowName, String indexName, List<CreateIndexItem> columns) throws ExprValidationException {


        if (explicitIndexes.containsKey(indexName)) {
            throw new ExprValidationException("Index by name '" + indexName + "' already exists");
        }


        List<IndexedPropDesc> hashProps = new ArrayList<IndexedPropDesc>();
        List<IndexedPropDesc> btreeProps = new ArrayList<IndexedPropDesc>();


        Set<String> indexed = new HashSet<String>();
        for (CreateIndexItem columnDesc : columns) {
            String columnName = columnDesc.getName();


            Class type = JavaClassHelper.getBoxedType(rootView.getEventType().getPropertyType(columnName));
            if (type == null) {
                throw new ExprValidationException("Property named '" + columnName + "' not found on named window '" + namedWindowName + "'");
            }
            if (!indexed.add(columnName)) {
                throw new ExprValidationException("Property named '" + columnName + "' has been declared more then once");
            }


            IndexedPropDesc desc = new IndexedPropDesc(columnName, type);
            if (columnDesc.getType() == CreateIndexType.HASH) {
                hashProps.add(desc);
            } else {
                btreeProps.add(desc);
            }
        }


        if (unique && !btreeProps.isEmpty()) {
            throw new ExprValidationException("Combination of unique index with btree (range) is not supported");
        }


        Pair<IndexMultiKey, EventTableAndNamePair> pair = indexRepository.addExplicitIndexOrReuse(unique, hashProps, btreeProps, dataWindowContents, rootView.getEventType(), indexName);
        explicitIndexes.put(indexName, pair.getSecond().getEventTable());
    }

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Examples of com.espertech.esper.epl.expression.ExprValidationException

                        writableProperty = eventTypeSPI.getWritableProperty(name);
                        propertyName = name;
                    }
                }
                if (writableProperty == null) {
                    throw new ExprValidationException("Property '" + propertyName + "' is not available for write access");
                }
            }
            writers[i] = eventTypeSPI.getWriter(propertyName);
            notNullableField[i] = writableProperty.getPropertyType().isPrimitive();


            properties.add(propertyName);
            wideners[i] = TypeWidenerFactory.getCheckPropertyAssignType(assignment.getExpression().toExpressionString(), assignment.getExpression().getExprEvaluator().getType(),
                    writableProperty.getPropertyType(), propertyName);
        }
        String[] propertyNames = properties.toArray(new String[properties.size()]);


        // map expression index to property index
        List<String> propertiesUniqueList = new ArrayList<String>(new HashSet<String>(properties));
        String[] propertiesArray = propertiesUniqueList.toArray(new String[propertiesUniqueList.size()]);
        EventBeanCopyMethod copyMethod = eventTypeSPI.getCopyMethod(propertiesArray);
        if (copyMethod == null) {
            throw new ExprValidationException("Event type does not support event bean copy");
        }


        return new NamedWindowUpdateHelper(expressions, propertyNames, writers, copyMethod, notNullableField, wideners);
    }

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Examples of com.espertech.esper.epl.expression.ExprValidationException


                boolean terminable = outputLimitSpec.getRateType() == OutputLimitRateType.TERM || outputLimitSpec.isAndAfterTerminate();
                outputProcessViewFactory = new OutputProcessViewConditionFactory(statementContext, outputStrategyPostProcessFactory, isDistinct, outputLimitSpec.getAfterTimePeriodExpr(), outputLimitSpec.getAfterNumberOfEvents(), resultEventType, outputConditionFactory, streamCount, conditionType, outputLimitSpec.getDisplayLimit(), terminable);
            }
            catch (RuntimeException ex) {
                throw new ExprValidationException("Error in the output rate limiting clause: " + ex.getMessage(), ex);
            }
        }


        return outputProcessViewFactory;
    }

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Examples of com.espertech.esper.epl.expression.ExprValidationException

            }
            namesPerStream[i] = streamName;


            processors[i] = services.getNamedWindowService().getProcessor(namedSpec.getWindowName());
            if (processors[i] == null) {
                throw new ExprValidationException("A named window by name '" + namedSpec.getWindowName() + "' does not exist");
            }
            typesPerStream[i] = processors[i].getTailView().getEventType();
        }


        // compile filter to optimize access to named window
        filters = new FilterSpecCompiled[numStreams];
        if (statementSpec.getFilterRootNode() != null) {
            LinkedHashMap<String, Pair<EventType, String>> tagged = new LinkedHashMap<String, Pair<EventType, String>>();
            for (int i = 0; i < numStreams; i++) {
                try {
                    StreamTypeServiceImpl types = new StreamTypeServiceImpl(typesPerStream, namesPerStream, new boolean[numStreams], services.getEngineURI(), false);
                    filters[i] = FilterSpecCompiler.makeFilterSpec(typesPerStream[i], namesPerStream[i],
                            Collections.singletonList(statementSpec.getFilterRootNode()), null,
                            tagged, tagged, types,
                            null, statementContext, Collections.singleton(i));
                }
                catch (Exception ex) {
                    log.warn("Unexpected exception analyzing filter paths: " + ex.getMessage(), ex);
                }
            }
        }


        // obtain result set processor
        boolean[] isIStreamOnly = new boolean[namesPerStream.length];
        Arrays.fill(isIStreamOnly, true);
        StreamTypeService typeService = new StreamTypeServiceImpl(typesPerStream, namesPerStream, isIStreamOnly, services.getEngineURI(), true);
        EPStatementStartMethodHelperValidate.validateNodes(statementSpec, statementContext, typeService, null);


        ResultSetProcessorFactoryDesc resultSetProcessorPrototype = ResultSetProcessorFactoryFactory.getProcessorPrototype(statementSpec, statementContext, typeService, null, new boolean[0], true, ContextPropertyRegistryImpl.EMPTY_REGISTRY, null);
        resultSetProcessor = EPStatementStartMethodHelperAssignExpr.getAssignResultSetProcessor(agentInstanceContext, resultSetProcessorPrototype);


        if (statementSpec.getSelectClauseSpec().isDistinct())
        {
            if (resultSetProcessor.getResultEventType() instanceof EventTypeSPI)
            {
                eventBeanReader = ((EventTypeSPI) resultSetProcessor.getResultEventType()).getReader();
            }
            if (eventBeanReader == null)
            {
                eventBeanReader = new EventBeanReaderDefaultImpl(resultSetProcessor.getResultEventType());
            }
        }


        // plan joins or simple queries
        if (numStreams > 1)
        {
            StreamJoinAnalysisResult streamJoinAnalysisResult = new StreamJoinAnalysisResult(numStreams);
            Arrays.fill(streamJoinAnalysisResult.getNamedWindow(), true);
            for (int i = 0; i < numStreams; i++) {
                final NamedWindowProcessorInstance processorInstance = processors[i].getProcessorInstance(agentInstanceContext);
                if (processors[i].isVirtualDataWindow()) {
                    streamJoinAnalysisResult.getViewExternal()[i] = new VirtualDWViewProviderForAgentInstance() {
                        public VirtualDWView getView(AgentInstanceContext agentInstanceContext) {
                            return processorInstance.getRootViewInstance().getVirtualDataWindow();
                        }
                    };
                }
                String[][] uniqueIndexes = processors[i].getUniqueIndexes(processorInstance);
                streamJoinAnalysisResult.getUniqueKeys()[i] = uniqueIndexes;
            }


            boolean hasAggregations = !resultSetProcessorPrototype.getAggregationServiceFactoryDesc().getExpressions().isEmpty();
            joinSetComposerPrototype = JoinSetComposerPrototypeFactory.makeComposerPrototype(null, null,
                    statementSpec.getOuterJoinDescList(), statementSpec.getFilterRootNode(), typesPerStream, namesPerStream,
                    streamJoinAnalysisResult, queryPlanLogging, statementContext.getAnnotations(), new HistoricalViewableDesc(numStreams), agentInstanceContext, false, hasAggregations);
        }


        // check context partition use
        if (statementSpec.getOptionalContextName() != null) {
            if (numStreams > 1) {
                throw new ExprValidationException("Joins in runtime queries for context partitions are not supported");
            }
        }
    }

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Examples of com.espertech.esper.epl.expression.ExprValidationException

     * @throws com.espertech.esper.epl.expression.ExprValidationException if the index fails to be valid
     */
    public synchronized void addExplicitIndex(boolean unique, String namedWindowName, String indexName, List<CreateIndexItem> columns) throws ExprValidationException {


        if (explicitIndexes.containsKey(indexName)) {
            throw new ExprValidationException("Index by name '" + indexName + "' already exists");
        }


        List<IndexedPropDesc> hashProps = new ArrayList<IndexedPropDesc>();
        List<IndexedPropDesc> btreeProps = new ArrayList<IndexedPropDesc>();


        Set<String> indexed = new HashSet<String>();
        for (CreateIndexItem columnDesc : columns) {
            String columnName = columnDesc.getName();


            Class type = JavaClassHelper.getBoxedType(rootView.getEventType().getPropertyType(columnName));
            if (type == null) {
                throw new ExprValidationException("Property named '" + columnName + "' not found on named window '" + namedWindowName + "'");
            }
            if (!indexed.add(columnName)) {
                throw new ExprValidationException("Property named '" + columnName + "' has been declared more then once");
            }


            IndexedPropDesc desc = new IndexedPropDesc(columnName, type);
            if (columnDesc.getType() == CreateIndexType.HASH) {
                hashProps.add(desc);
            } else {
                btreeProps.add(desc);
            }
        }


        if (unique && !btreeProps.isEmpty()) {
            throw new ExprValidationException("Combination of unique index with btree (range) is not supported");
        }


        Pair<IndexMultiKey, EventTableAndNamePair> pair = indexRepository.addExplicitIndexOrReuse(unique, hashProps, btreeProps, dataWindowContents, rootView.getEventType(), indexName);
        explicitIndexes.put(indexName, pair.getSecond().getEventTable());
    }

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Examples of com.espertech.esper.epl.expression.ExprValidationException


        // Determine stream names for each stream - some streams may not have a name given
        String[] streamNames = EPStatementStartMethodHelperUtil.determineStreamNames(statementSpec.getStreamSpecs());
        int numStreams = streamNames.length;
        if (numStreams == 0) {
            throw new ExprValidationException("The from-clause is required but has not been specified");
        }
        final boolean isJoin = statementSpec.getStreamSpecs().length > 1;
        final boolean hasContext = statementSpec.getOptionalContextName() != null;


        // First we create streams for subselects, if there are any
        SubSelectActivationCollection subSelectStreamDesc = EPStatementStartMethodHelperSubselect.createSubSelectActivation(services, statementSpec, statementContext);


        // Create streams and views
        ViewableActivator[] eventStreamParentViewableActivators = new ViewableActivator[numStreams];
        ViewFactoryChain[] unmaterializedViewChain = new ViewFactoryChain[numStreams];
        String[] eventTypeNames = new String[numStreams];
        boolean[] isNamedWindow = new boolean[numStreams];
        HistoricalEventViewable[] historicalEventViewables = new HistoricalEventViewable[numStreams];


        // verify for joins that required views are present
        StreamJoinAnalysisResult joinAnalysisResult = verifyJoinViews(statementSpec, statementContext.getNamedWindowService(), defaultAgentInstanceContext);
        final ExprEvaluatorContextStatement evaluatorContextStmt = new ExprEvaluatorContextStatement(statementContext);


        for (int i = 0; i < statementSpec.getStreamSpecs().length; i++)
        {
            StreamSpecCompiled streamSpec = statementSpec.getStreamSpecs()[i];


            // Create view factories and parent view based on a filter specification
            if (streamSpec instanceof FilterStreamSpecCompiled)
            {
                final FilterStreamSpecCompiled filterStreamSpec = (FilterStreamSpecCompiled) streamSpec;
                eventTypeNames[i] = filterStreamSpec.getFilterSpec().getFilterForEventTypeName();


                // Since only for non-joins we get the existing stream's lock and try to reuse it's views
                final boolean filterSubselectSameStream = EPStatementStartMethodHelperUtil.determineSubquerySameStream(statementSpec, filterStreamSpec);


                // create activator
                ViewableActivator activatorDeactivator;
                if (optionalViewableActivatorFactory != null) {
                    activatorDeactivator = optionalViewableActivatorFactory.createActivator(filterStreamSpec);
                    if (activatorDeactivator == null) {
                        throw new IllegalStateException("Viewable activate is null for " + filterStreamSpec.getFilterSpec().getFilterForEventType().getName());
                    }
                }
                else {
                    if (!hasContext) {
                        activatorDeactivator = new ViewableActivatorStreamReuseView(services, statementContext, statementSpec, filterStreamSpec, isJoin, evaluatorContextStmt, filterSubselectSameStream, i);
                    }
                    else {
                        InstrumentationAgent instrumentationAgentFilter = null;
                        if (InstrumentationHelper.ENABLED) {
                            final String eventTypeName = filterStreamSpec.getFilterSpec().getFilterForEventType().getName();
                            final int streamNumber = i;
                            instrumentationAgentFilter = new InstrumentationAgent() {
                                public void indicateQ() {
                                    InstrumentationHelper.get().qFilterActivationStream(eventTypeName, streamNumber);
                                }
                                public void indicateA() {
                                    InstrumentationHelper.get().aFilterActivationStream();
                                }
                            };
                        }


                        activatorDeactivator = new ViewableActivatorFilterProxy(services, filterStreamSpec.getFilterSpec(), statementSpec.getAnnotations(), false, instrumentationAgentFilter);
                    }
                }
                eventStreamParentViewableActivators[i] = activatorDeactivator;


                EventType resultEventType = filterStreamSpec.getFilterSpec().getResultEventType();
                unmaterializedViewChain[i] = services.getViewService().createFactories(i, resultEventType, streamSpec.getViewSpecs(), streamSpec.getOptions(), statementContext);
            }
            // Create view factories and parent view based on a pattern expression
            else if (streamSpec instanceof PatternStreamSpecCompiled)
            {
                PatternStreamSpecCompiled patternStreamSpec = (PatternStreamSpecCompiled) streamSpec;
                boolean usedByChildViews = streamSpec.getViewSpecs().length > 0 || (statementSpec.getInsertIntoDesc() != null);
                String patternTypeName = statementContext.getStatementId() + "_pattern_" + i;
                final EventType eventType = services.getEventAdapterService().createSemiAnonymousMapType(patternTypeName, patternStreamSpec.getTaggedEventTypes(), patternStreamSpec.getArrayEventTypes(), usedByChildViews);
                unmaterializedViewChain[i] = services.getViewService().createFactories(i, eventType, streamSpec.getViewSpecs(), streamSpec.getOptions(), statementContext);


                final EvalRootFactoryNode rootFactoryNode = services.getPatternNodeFactory().makeRootNode();
                rootFactoryNode.addChildNode(patternStreamSpec.getEvalFactoryNode());


                final PatternContext patternContext = statementContext.getPatternContextFactory().createContext(statementContext, i, rootFactoryNode, patternStreamSpec.getMatchedEventMapMeta(), true);


                // create activator
                ViewableActivator patternActivator = new ViewableActivatorPattern(patternContext, rootFactoryNode, eventType, EPStatementStartMethodHelperUtil.isConsumingFilters(patternStreamSpec.getEvalFactoryNode()), patternStreamSpec.isSuppressSameEventMatches(), patternStreamSpec.isDiscardPartialsOnMatch());
                eventStreamParentViewableActivators[i] = patternActivator;
            }
            // Create view factories and parent view based on a database SQL statement
            else if (streamSpec instanceof DBStatementStreamSpec)
            {
                if (streamSpec.getViewSpecs().length > 0)
                {
                    throw new ExprValidationException("Historical data joins do not allow views onto the data, view '"
                            + streamSpec.getViewSpecs()[0].getObjectNamespace() + ':' + streamSpec.getViewSpecs()[0].getObjectName() + "' is not valid in this context");
                }


                DBStatementStreamSpec sqlStreamSpec = (DBStatementStreamSpec) streamSpec;
                SQLColumnTypeConversion typeConversionHook = (SQLColumnTypeConversion) JavaClassHelper.getAnnotationHook(statementSpec.getAnnotations(), HookType.SQLCOL, SQLColumnTypeConversion.class, statementContext.getMethodResolutionService());
                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);
                    }
                };
                stopCallbacks.add(historicalEventViewable);
            }
            else if (streamSpec instanceof NamedWindowConsumerStreamSpec)
            {
                final NamedWindowConsumerStreamSpec namedSpec = (NamedWindowConsumerStreamSpec) streamSpec;
                final NamedWindowProcessor processor = services.getNamedWindowService().getProcessor(namedSpec.getWindowName());
                EventType namedWindowType = processor.getTailView().getEventType();
                if (namedSpec.getOptPropertyEvaluator() != null) {
                    namedWindowType = namedSpec.getOptPropertyEvaluator().getFragmentEventType();
                }


                eventStreamParentViewableActivators[i] = new ViewableActivatorNamedWindow(processor, namedSpec.getFilterExpressions(), namedSpec.getOptPropertyEvaluator());
                unmaterializedViewChain[i] = services.getViewService().createFactories(i, namedWindowType, namedSpec.getViewSpecs(), namedSpec.getOptions(), statementContext);
                joinAnalysisResult.setNamedWindow(i);
                eventTypeNames[i] = namedSpec.getWindowName();
                isNamedWindow[i] = true;


                // Consumers to named windows cannot declare a data window view onto the named window to avoid duplicate remove streams
                EPStatementStartMethodHelperValidate.validateNoDataWindowOnNamedWindow(unmaterializedViewChain[i].getViewFactoryChain());
            }
            else
            {
                throw new ExprValidationException("Unknown stream specification type: " + streamSpec);
            }
        }


        // handle match-recognize pattern
        if (statementSpec.getMatchRecognizeSpec() != null)
        {
            if (isJoin)
            {
                throw new ExprValidationException("Joins are not allowed when using match recognize");
            }
            boolean isUnbound = (unmaterializedViewChain[0].getViewFactoryChain().isEmpty()) && (!(statementSpec.getStreamSpecs()[0] instanceof NamedWindowConsumerStreamSpec));
            AgentInstanceContext agentInstanceContext = defaultAgentInstanceContext;
            EventRowRegexNFAViewFactory factory = new EventRowRegexNFAViewFactory(unmaterializedViewChain[0], statementSpec.getMatchRecognizeSpec(), agentInstanceContext, isUnbound, statementSpec.getAnnotations());
            unmaterializedViewChain[0].getViewFactoryChain().add(factory);


            EPStatementStartMethodHelperAssignExpr.assignAggregations(factory.getAggregationService(), factory.getAggregationExpressions());
        }


        // Obtain event types from view factory chains
        EventType[] streamEventTypes = new EventType[statementSpec.getStreamSpecs().length];
        for (int i = 0; i < unmaterializedViewChain.length; i++)
        {
            streamEventTypes[i] = unmaterializedViewChain[i].getEventType();
        }


        // Add uniqueness information useful for joins
        joinAnalysisResult.addUniquenessInfo(unmaterializedViewChain, statementSpec.getAnnotations());


        // Validate sub-select views
        SubSelectStrategyCollection subSelectStrategyCollection = EPStatementStartMethodHelperSubselect.planSubSelect(services, statementContext, queryPlanLogging, subSelectStreamDesc, streamNames, streamEventTypes, eventTypeNames, stopCallbacks, statementSpec.getAnnotations(), statementSpec.getDeclaredExpressions(), contextPropertyRegistry);


        // Construct type information per stream
        StreamTypeService typeService = new StreamTypeServiceImpl(streamEventTypes, streamNames, EPStatementStartMethodHelperUtil.getHasIStreamOnly(isNamedWindow, unmaterializedViewChain), services.getEngineURI(), false);
        ViewResourceDelegateUnverified viewResourceDelegateUnverified = new ViewResourceDelegateUnverified();


        // Validate views that require validation, specifically streams that don't have
        // sub-views such as DB SQL joins
        HistoricalViewableDesc historicalViewableDesc = new HistoricalViewableDesc(numStreams);
        for (int stream = 0; stream < historicalEventViewables.length; stream++)
        {
            HistoricalEventViewable historicalEventViewable = historicalEventViewables[stream];
            if (historicalEventViewable == null) {
                continue;
            }
            historicalEventViewable.validate(services.getEngineImportService(),
                    typeService,
                    statementContext.getMethodResolutionService(),
                    statementContext.getTimeProvider(),
                    statementContext.getVariableService(), evaluatorContextStmt,
                    services.getConfigSnapshot(), services.getSchedulingService(), services.getEngineURI(),
                    statementSpec.getSqlParameters(),
                    statementContext.getEventAdapterService(), statementContext.getStatementName(), statementContext.getStatementId(), statementContext.getAnnotations());
            historicalViewableDesc.setHistorical(stream, historicalEventViewable.getRequiredStreams());
            if (historicalEventViewable.getRequiredStreams().contains(stream))
            {
                throw new ExprValidationException("Parameters for historical stream " + stream + " indicate that the stream is subordinate to itself as stream parameters originate in the same stream");
            }
        }


        // Construct a processor for results posted by views and joins, which takes care of aggregation if required.
        // May return null if we don't need to post-process results posted by views or joins.

View Full Code Here

Examples of com.espertech.esper.epl.expression.ExprValidationException

            if (streamSpec.getOptions().isUnidirectional())
            {
                analysisResult.setUnidirectionalInd(i);
                if (unidirectionalStreamNumber != -1)
                {
                    throw new ExprValidationException("The unidirectional keyword can only apply to one stream in a join");
                }
                unidirectionalStreamNumber = i;
            }
            if (streamSpec.getViewSpecs().length > 0)
            {
                analysisResult.setHasChildViews(i);
            }
            if (streamSpec instanceof NamedWindowConsumerStreamSpec)
            {
                NamedWindowConsumerStreamSpec nwSpec = (NamedWindowConsumerStreamSpec) streamSpec;
                if (nwSpec.getOptPropertyEvaluator() != null && !streamSpec.getOptions().isUnidirectional()) {
                    throw new ExprValidationException("Failed to validate named window use in join, contained-event is only allowed for named windows when marked as unidirectional");
                }
                analysisResult.setNamedWindow(i);
                final NamedWindowProcessor processor = namedWindowService.getProcessor(nwSpec.getWindowName());
                NamedWindowProcessorInstance processorInstance = processor.getProcessorInstance(defaultAgentInstanceContext);
                String[][] uniqueIndexes = processor.getUniqueIndexes(processorInstance);
                analysisResult.getUniqueKeys()[i] = uniqueIndexes;
                if (processor.isVirtualDataWindow()) {
                    analysisResult.getViewExternal()[i] = new VirtualDWViewProviderForAgentInstance() {
                        public VirtualDWView getView(AgentInstanceContext agentInstanceContext) {
                            return processor.getProcessorInstance(agentInstanceContext).getRootViewInstance().getVirtualDataWindow();
                        }
                    };
                }
            }
        }
        if ((unidirectionalStreamNumber != -1) && (analysisResult.getHasChildViews()[unidirectionalStreamNumber]))
        {
            throw new ExprValidationException("The unidirectional keyword requires that no views are declared onto the stream");
        }
        analysisResult.setUnidirectionalStreamNumber(unidirectionalStreamNumber);


        // count streams that provide data, excluding streams that poll data (DB and method)
        int countProviderNonpolling = 0;
        for (int i = 0; i < statementSpec.getStreamSpecs().length; i++)
        {
            StreamSpecCompiled streamSpec = statementSpec.getStreamSpecs()[i];
            if ((streamSpec instanceof MethodStreamSpec) ||
                (streamSpec instanceof DBStatementStreamSpec))
            {
                continue;
            }
            countProviderNonpolling++;
        }


        // if there is only one stream providing data, the analysis is done
        if (countProviderNonpolling == 1)
        {
            return analysisResult;
        }
        // there are multiple driving streams, verify the presence of a view for insert/remove stream


        // validation of join views works differently for unidirectional as there can be self-joins that don't require a view
        // see if this is a self-join in which all streams are filters and filter specification is the same.
        FilterSpecCompiled unidirectionalFilterSpec = null;
        FilterSpecCompiled lastFilterSpec = null;
        boolean pureSelfJoin = true;
        for (StreamSpecCompiled streamSpec : statementSpec.getStreamSpecs())
        {
            if (!(streamSpec instanceof FilterStreamSpecCompiled))
            {
                pureSelfJoin = false;
                continue;
            }


            FilterSpecCompiled filterSpec = ((FilterStreamSpecCompiled) streamSpec).getFilterSpec();
            if ((lastFilterSpec != null) && (!lastFilterSpec.equalsTypeAndFilter(filterSpec)))
            {
                pureSelfJoin = false;
            }
            if (streamSpec.getViewSpecs().length > 0)
            {
                pureSelfJoin = false;
            }
            lastFilterSpec = filterSpec;


            if (streamSpec.getOptions().isUnidirectional())
            {
                unidirectionalFilterSpec = filterSpec;
            }
        }


        // self-join without views and not unidirectional
        if ((pureSelfJoin) && (unidirectionalFilterSpec == null))
        {
            analysisResult.setPureSelfJoin(true);
            return analysisResult;
        }


        // weed out filter and pattern streams that don't have a view in a join
        for (int i = 0; i < statementSpec.getStreamSpecs().length; i++)
        {
            StreamSpecCompiled streamSpec = statementSpec.getStreamSpecs()[i];
            if (streamSpec.getViewSpecs().length > 0)
            {
                continue;
            }


            String name = streamSpec.getOptionalStreamName();
            if ((name == null) && (streamSpec instanceof FilterStreamSpecCompiled))
            {
                name = ((FilterStreamSpecCompiled) streamSpec).getFilterSpec().getFilterForEventTypeName();
            }
            if ((name == null) && (streamSpec instanceof PatternStreamSpecCompiled))
            {
                name = "pattern event stream";
            }


            if (streamSpec.getOptions().isUnidirectional())
            {
                continue;
            }
            // allow a self-join without a child view, in that the filter spec is the same as the unidirection's stream filter
            if ((unidirectionalFilterSpec != null) &&
                (streamSpec instanceof FilterStreamSpecCompiled) &&
                (((FilterStreamSpecCompiled) streamSpec).getFilterSpec().equalsTypeAndFilter(unidirectionalFilterSpec)))
            {
                analysisResult.setUnidirectionalNonDriving(i);
                continue;
            }
            if ((streamSpec instanceof FilterStreamSpecCompiled) ||
                (streamSpec instanceof PatternStreamSpecCompiled))
            {
                throw new ExprValidationException("Joins require that at least one view is specified for each stream, no view was specified for " + name);
            }
        }


        return analysisResult;
    }

View Full Code Here

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