Examples with ExpressionExecutor io.siddhi.core.executor.ExpressionExecutor used on opensource projects

Example 16 with ExpressionExecutor

use of io.siddhi.core.executor.ExpressionExecutor in project siddhi by wso2.

the class AggregationParser method processAggregationSelectors.

private static void processAggregationSelectors(AggregationDefinition aggregationDefinition, SiddhiQueryContext siddhiQueryContext, Map<String, Table> tableMap, List<VariableExpressionExecutor> incomingVariableExpressionExecutors, MetaStreamEvent incomingMetaStreamEvent, List<ExpressionExecutor> incomingExpressionExecutors, List<Expression> outputExpressions, OutputAttribute outputAttribute, Expression expression) {
    ExpressionExecutor expressionExecutor = ExpressionParser.parseExpression(expression, incomingMetaStreamEvent, 0, tableMap, incomingVariableExpressionExecutors, false, 0, ProcessingMode.BATCH, false, siddhiQueryContext);
    incomingExpressionExecutors.add(expressionExecutor);
    incomingMetaStreamEvent.addOutputData(new Attribute(outputAttribute.getRename(), expressionExecutor.getReturnType()));
    aggregationDefinition.getAttributeList().add(new Attribute(outputAttribute.getRename(), expressionExecutor.getReturnType()));
    outputExpressions.add(Expression.variable(outputAttribute.getRename()));
}

Example 17 with ExpressionExecutor

use of io.siddhi.core.executor.ExpressionExecutor in project siddhi by wso2.

the class InputParameterValidator method validateExpressionExecutors.

/**
 * The method which validates the extension specific parameters of siddhi App with the pattern specified in the
 * {@link ParameterOverload} annotation in the extension class
 *
 * @param objectHavingAnnotation       the object which has Extension annotation
 * @param attributeExpressionExecutors the executors of each function parameters
 * @throws SiddhiAppValidationException SiddhiAppValidation exception
 */
public static void validateExpressionExecutors(Object objectHavingAnnotation, ExpressionExecutor[] attributeExpressionExecutors) throws SiddhiAppValidationException {
    Extension annotation = objectHavingAnnotation.getClass().getAnnotation(Extension.class);
    if (annotation == null) {
        return;
    }
    ParameterOverload[] parameterOverloads = annotation.parameterOverloads();
    Parameter[] parameters = annotation.parameters();
    String key = AnnotationHelper.createAnnotationKey(annotation);
    // Count the mandatory number of parameters specified in @Extension
    int mandatoryCount = 0;
    Map<String, Parameter> parameterMap = new HashMap<>();
    for (Parameter parameter : parameters) {
        if (!parameter.optional()) {
            mandatoryCount++;
        }
        parameterMap.put(parameter.name(), parameter);
    }
    // Find the parameterOverLoad
    ParameterOverload parameterOverload = null;
    for (ParameterOverload aParameterOverload : parameterOverloads) {
        String[] overloadParameterNames = aParameterOverload.parameterNames();
        if (overloadParameterNames.length == attributeExpressionExecutors.length && (overloadParameterNames.length == 0 || !overloadParameterNames[overloadParameterNames.length - 1].equals(REPETITIVE_PARAMETER_NOTATION))) {
            boolean isExpectedParameterOverload = true;
            for (int i = 0; i < overloadParameterNames.length; i++) {
                String overloadParameterName = overloadParameterNames[i];
                Parameter parameter = parameterMap.get(overloadParameterName);
                boolean supportedReturnType = false;
                for (DataType type : parameter.type()) {
                    if (attributeExpressionExecutors[i].getReturnType().toString().equalsIgnoreCase(type.toString())) {
                        supportedReturnType = true;
                        break;
                    }
                }
                if (!supportedReturnType) {
                    isExpectedParameterOverload = false;
                    break;
                }
            }
            if (isExpectedParameterOverload) {
                parameterOverload = aParameterOverload;
                break;
            }
        } else if (overloadParameterNames.length - 1 <= attributeExpressionExecutors.length && overloadParameterNames.length > 0 && overloadParameterNames[overloadParameterNames.length - 1].equals(REPETITIVE_PARAMETER_NOTATION)) {
            if (attributeExpressionExecutors.length > 0) {
                boolean isExpectedParameterOverload = true;
                for (int i = 0; i < attributeExpressionExecutors.length; i++) {
                    Parameter parameter = null;
                    String overloadParameterName = null;
                    if (i < overloadParameterNames.length - 1) {
                        overloadParameterName = overloadParameterNames[i];
                    } else {
                        overloadParameterName = overloadParameterNames[overloadParameterNames.length - 2];
                    }
                    parameter = parameterMap.get(overloadParameterName);
                    boolean supportedReturnType = false;
                    for (DataType type : parameter.type()) {
                        if (attributeExpressionExecutors[i].getReturnType().toString().equalsIgnoreCase(type.toString())) {
                            supportedReturnType = true;
                            break;
                        }
                    }
                    if (!supportedReturnType) {
                        isExpectedParameterOverload = false;
                        break;
                    }
                }
                if (isExpectedParameterOverload) {
                    parameterOverload = aParameterOverload;
                    break;
                }
            }
        }
    }
    if (parameterOverload == null) {
        if (parameterOverloads.length > 0) {
            List<Attribute.Type> returnTypes = new ArrayList<>();
            for (ExpressionExecutor expressionExecutor : attributeExpressionExecutors) {
                returnTypes.add(expressionExecutor.getReturnType());
            }
            String formattedParamOverloadString = getSupportedParamOverloads(parameterMap, parameterOverloads);
            throw new SiddhiAppValidationException("There is no parameterOverload for '" + key + "' that matches attribute types '" + returnTypes.stream().map(String::valueOf).collect(Collectors.joining(", ", "<", ">")) + "'. Supported parameter overloads are " + formattedParamOverloadString + ".");
        } else {
            if (mandatoryCount > attributeExpressionExecutors.length) {
                throw new SiddhiAppValidationException("The '" + key + "' expects at least " + mandatoryCount + " parameters, but found only " + attributeExpressionExecutors.length + " input parameters.");
            }
        }
    } else {
        String[] overloadParameterNames = parameterOverload.parameterNames();
        for (int i = 0; i < overloadParameterNames.length; i++) {
            String overloadParameterName = overloadParameterNames[i];
            Parameter parameter = parameterMap.get(overloadParameterName);
            if (parameter != null && !parameter.dynamic() && !(attributeExpressionExecutors[i] instanceof ConstantExpressionExecutor)) {
                throw new SiddhiAppValidationException("The '" + key + "' expects input parameter '" + parameter.name() + "' at position '" + i + "' to be static," + " but found a dynamic attribute.");
            }
        }
    }
}

Example 18 with ExpressionExecutor

use of io.siddhi.core.executor.ExpressionExecutor in project siddhi by wso2.

the class ExpressionBuilder method buildStreamVariableExecutor.

private void buildStreamVariableExecutor(Variable variable, int streamEventChainIndex, ExpressionVisitor expressionVisitor, Attribute.Type type) {
    String id = variable.getAttributeName();
    if (variable.getStreamId() != null) {
        id = variable.getStreamId() + "." + id;
    }
    expressionVisitor.beginVisitStreamVariable(id, variable.getStreamId(), variable.getAttributeName(), type);
    if (!variableExpressionExecutorMap.containsKey(id)) {
        ExpressionExecutor variableExpressionExecutor = ExpressionParser.parseExpression(variable, matchingMetaInfoHolder.getMetaStateEvent(), streamEventChainIndex, tableMap, variableExpressionExecutors, false, 0, ProcessingMode.BATCH, false, siddhiQueryContext);
        variableExpressionExecutorMap.put(id, variableExpressionExecutor);
    }
    expressionVisitor.endVisitStreamVariable(id, variable.getStreamId(), variable.getAttributeName(), type);
}

Example 19 with ExpressionExecutor

use of io.siddhi.core.executor.ExpressionExecutor in project siddhi by wso2.

the class UpdateOrInsertReducer method reduceEventsForInsert.

public List<Object[]> reduceEventsForInsert(List<Object[]> failedRecords, Map<String, ExpressionExecutor> inMemorySetExecutors) {
    ComplexEventChunk<StreamEvent> toInsertEventChunk = new ComplexEventChunk<>();
    StateEvent joinEvent = stateEventFactory.newInstance();
    for (Object[] data : failedRecords) {
        StreamEvent failedEvent = streamEventFactory.newInstance();
        failedEvent.setOutputData(data);
        joinEvent.setEvent(streamEventIndex, failedEvent);
        boolean updated = false;
        toInsertEventChunk.reset();
        while (toInsertEventChunk.hasNext()) {
            StreamEvent toInsertEvent = toInsertEventChunk.next();
            joinEvent.setEvent(storeEventIndex, toInsertEvent);
            if ((Boolean) inMemoryCompiledCondition.execute(joinEvent)) {
                for (Map.Entry<String, ExpressionExecutor> entry : inMemorySetExecutors.entrySet()) {
                    toInsertEvent.setOutputData(entry.getValue().execute(failedEvent), attributeMap.get(entry.getKey()));
                }
                updated = true;
            }
        }
        if (!updated) {
            toInsertEventChunk.add(failedEvent);
        }
    }
    List<Object[]> toInsertRecords = new LinkedList<>();
    toInsertEventChunk.reset();
    while (toInsertEventChunk.hasNext()) {
        StreamEvent streamEvent = toInsertEventChunk.next();
        toInsertRecords.add(streamEvent.getOutputData());
    }
    return toInsertRecords;
}

Example 20 with ExpressionExecutor

use of io.siddhi.core.executor.ExpressionExecutor in project siddhi by wso2.

the class AbstractRecordTable method compileUpdateSet.

public CompiledUpdateSet compileUpdateSet(UpdateSet updateSet, MatchingMetaInfoHolder matchingMetaInfoHolder, List<VariableExpressionExecutor> variableExpressionExecutors, Map<String, Table> tableMap, SiddhiQueryContext siddhiQueryContext) {
    RecordTableCompiledUpdateSet recordTableCompiledUpdateSet = new RecordTableCompiledUpdateSet();
    Map<String, ExpressionExecutor> parentExecutorMap = new HashMap<>();
    for (UpdateSet.SetAttribute setAttribute : updateSet.getSetAttributeList()) {
        ExpressionExecutor inMemoryAssignmentExecutor = ExpressionParser.parseExpression(setAttribute.getAssignmentExpression(), matchingMetaInfoHolder.getMetaStateEvent(), matchingMetaInfoHolder.getCurrentState(), tableMap, variableExpressionExecutors, false, 0, ProcessingMode.BATCH, false, siddhiQueryContext);
        ExpressionBuilder expressionBuilder = new ExpressionBuilder(setAttribute.getAssignmentExpression(), matchingMetaInfoHolder, variableExpressionExecutors, tableMap, null, inMemoryAssignmentExecutor, siddhiQueryContext);
        CompiledExpression compiledExpression = compileSetAttribute(expressionBuilder);
        recordTableCompiledUpdateSet.put(setAttribute.getTableVariable().getAttributeName(), compiledExpression);
        Map<String, ExpressionExecutor> expressionExecutorMap = expressionBuilder.getVariableExpressionExecutorMap();
        parentExecutorMap.putAll(expressionExecutorMap);
    }
    recordTableCompiledUpdateSet.setExpressionExecutorMap(parentExecutorMap);
    return recordTableCompiledUpdateSet;
}