Package com.espertech.esper.epl.expression

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

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    }

    public void addStatement(String contextName, ContextManagedStatementBase statement) throws ExprValidationException {
        ContextManagerEntry entry = contexts.get(contextName);
        if (entry == null) {
            throw new ExprValidationException(getNotDecaredText(contextName));
        }
        entry.addStatement(statement.getStatementContext().getStatementId());
        entry.getContextManager().addStatement(statement);
    }
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                        EvalObserverFactoryNode observerNode = (EvalObserverFactoryNode) evalNode;
                        for (ExprNode param : observerNode.getPatternObserverSpec().getObjectParameters()) {
                            param.accept(visitor);
                        }
                        if (visitor.getSubselects().size() != beforeCount) {
                            throw new ExprValidationException("Subselects are not allowed within pattern observer parameters, please consider using a variable instead");
                        }
                    }
                }
            }
        }
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        catch (VariableExistsException ex)
        {
            // for new statement we don't allow creating the same variable
            if (isNewStatement)
            {
                throw new ExprValidationException("Cannot create variable: " + ex.getMessage());
            }
        }
        catch (VariableDeclarationException ex)
        {
            throw new ExprValidationException("Cannot create variable: " + ex.getMessage());
        }

        final CreateVariableView createView = new CreateVariableView(statementContext.getStatementId(), services.getEventAdapterService(), services.getVariableService(), createDesc.getVariableName(), statementContext.getStatementResultService());
        final int variableNum = services.getVariableService().getReader(createDesc.getVariableName()).getVariableNumber();
        services.getVariableService().registerCallback(variableNum, createView);
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                    return;
                }
            }

            if (!filters.isEmpty()) {
                throw new ExprValidationException(message);
            }
            return;
        }

        // validate create-window
        String declaredAsName = statement.getStatementSpec().getCreateWindowDesc().getAsEventTypeName();
        if (declaredAsName != null) {
            if (categorySpec.getFilterSpecCompiled().getFilterForEventType().getName().equals(declaredAsName)) {
                return;
            }
            throw new ExprValidationException(message);
        }
    }
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    }

    private void validateContextDesc(ContextDetailCategory categorySpec) throws ExprValidationException {

        if (categorySpec.getItems().isEmpty()) {
            throw new ExprValidationException("Empty list of partition items");
        }
    }
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        EPServicesContext servicesContext = context.getServicesContext();
        AgentInstanceContext agentInstanceContext = context.getAgentInstanceContext();

        // validate
        if (select.getInsertIntoDesc() != null) {
            throw new ExprValidationException("Insert-into clause is not supported");
        }
        if (select.getSelectStreamSelectorEnum() != SelectClauseStreamSelectorEnum.ISTREAM_ONLY) {
            throw new ExprValidationException("Selecting remove-stream is not supported");
        }
        ExprNodeSubselectDeclaredDotVisitor visitor = StatementSpecRawAnalyzer.walkSubselectAndDeclaredDotExpr(select);
        if (!visitor.getSubselects().isEmpty()) {
            throw new ExprValidationException("Subselects are not supported");
        }

        Map<Integer, FilterStreamSpecRaw> streams = new HashMap<Integer, FilterStreamSpecRaw>();
        for (int streamNum = 0; streamNum < select.getStreamSpecs().size(); streamNum++) {
            StreamSpecRaw rawStreamSpec = select.getStreamSpecs().get(streamNum);
            if (!(rawStreamSpec instanceof FilterStreamSpecRaw)) {
                throw new ExprValidationException("From-clause must contain only streams and cannot contain patterns or other constructs");
            }
            streams.put(streamNum, (FilterStreamSpecRaw) rawStreamSpec);
        }

        // compile offered streams
        List<StreamSpecCompiled> streamSpecCompileds = new ArrayList<StreamSpecCompiled>();
        for (int streamNum = 0; streamNum < select.getStreamSpecs().size(); streamNum++) {
            FilterStreamSpecRaw filter = streams.get(streamNum);
            Map.Entry<Integer, DataFlowOpInputPort> inputPort = findInputPort(filter.getRawFilterSpec().getEventTypeName(), context.getInputPorts());
            if (inputPort == null) {
                throw new ExprValidationException("Failed to find stream '" + filter.getRawFilterSpec().getEventTypeName() + "' among input ports, input ports are " + Arrays.toString(getInputPortNames(context.getInputPorts())));
            }
            EventType eventType = inputPort.getValue().getTypeDesc().getEventType();
            String streamAlias = filter.getOptionalStreamName();
            FilterSpecCompiled filterSpecCompiled = new FilterSpecCompiled(eventType, streamAlias, Collections.<FilterSpecParam>emptyList(), null);
            FilterStreamSpecCompiled filterStreamSpecCompiled = new FilterStreamSpecCompiled(filterSpecCompiled, select.getStreamSpecs().get(0).getViewSpecs(), streamAlias, new StreamSpecOptions());
            streamSpecCompileds.add(filterStreamSpecCompiled);
        }

        // create compiled statement spec
        SelectClauseSpecCompiled selectClauseCompiled = StatementLifecycleSvcUtil.compileSelectClause(select.getSelectClauseSpec());

        // determine if snapshot output is needed
        OutputLimitSpec outputLimitSpec = select.getOutputLimitSpec();
        isOutputLimited = outputLimitSpec != null;
        if (iterate) {
            if (outputLimitSpec != null) {
                throw new ExprValidationException("Output rate limiting is not supported with 'iterate'");
            }
            outputLimitSpec = new OutputLimitSpec(OutputLimitLimitType.SNAPSHOT, OutputLimitRateType.TERM);
        }

        Annotation[] mergedAnnotations = AnnotationUtil.mergeAnnotations(statementContext.getAnnotations(), context.getOperatorAnnotations());
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    private EPDataFlowEmitter graphContext;

    public DataFlowOpInitializeResult initialize(DataFlowOpInitializateContext prepareContext) throws Exception {

        if (prepareContext.getInputPorts().size() != 1) {
            throw new ExprValidationException("Filter requires single input port");
        }
        if (filter == null) {
            throw new ExprValidationException("Required parameter 'filter' providing the filter expression is not provided");
        }
        if (prepareContext.getOutputPorts().isEmpty() || prepareContext.getOutputPorts().size() > 2) {
            throw new IllegalArgumentException("Filter operator requires one or two output stream(s) but produces " + prepareContext.getOutputPorts().size() + " streams");
        }
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            DependencyGraph graph = new DependencyGraph(2, false);
            graph.addDependency(0, historicalViewableDesc.getDependenciesPerHistorical()[0]);
            graph.addDependency(1, historicalViewableDesc.getDependenciesPerHistorical()[1]);
            if (graph.getFirstCircularDependency() != null)
            {
                throw new ExprValidationException("Circular dependency detected between historical streams");
            }

            // if both streams are independent
            if (graph.getRootNodes().size() == 2)
            {
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                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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        LinkedHashMap<String, Object> typing = new LinkedHashMap<String, Object>();
        Set<String> columnNames = new HashSet<String>();
        for (ColumnDesc column : columns) {
            boolean added = columnNames.add(column.getName());
            if (!added) {
                throw new ExprValidationException("Duplicate column name '" + column.getName() + "'");
            }
            Class plain = JavaClassHelper.getClassForSimpleName(column.getType());
            if (plain != null) {
                if (column.isArray()) {
                    plain = Array.newInstance(plain, 0).getClass();
                }
                typing.put(column.getName(), plain);
            }
            else {
                if (column.isArray()) {
                    typing.put(column.getName(), column.getType() + "[]");
                }
                else {
                    typing.put(column.getName(), column.getType());
                }
            }
        }

        if (copyFrom != null && !copyFrom.isEmpty()) {
            for (String copyFromName : copyFrom) {
                EventType type = eventAdapterService.getExistsTypeByName(copyFromName);
                if (type == null) {
                    throw new ExprValidationException("Type by name '" + copyFromName + "' could not be located");
                }
                mergeType(typing, type);
            }
        }
        return typing;
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