Examples with ExpressionExecutor org.wso2.siddhi.core.executor.ExpressionExecutor used on opensource projects

Example 31 with ExpressionExecutor

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

the class IncrementalAggregationProcessor method process.

@Override
public void process(ComplexEventChunk complexEventChunk) {
    ComplexEventChunk<StreamEvent> streamEventChunk = new ComplexEventChunk<>(complexEventChunk.isBatch());
    try {
        int noOfEvents = 0;
        if (latencyTrackerInsert != null && siddhiAppContext.isStatsEnabled()) {
            latencyTrackerInsert.markIn();
        }
        while (complexEventChunk.hasNext()) {
            ComplexEvent complexEvent = complexEventChunk.next();
            StreamEvent borrowedEvent = streamEventPool.borrowEvent();
            for (int i = 0; i < incomingExpressionExecutors.size(); i++) {
                ExpressionExecutor expressionExecutor = incomingExpressionExecutors.get(i);
                Object outputData = expressionExecutor.execute(complexEvent);
                if (expressionExecutor instanceof IncrementalUnixTimeFunctionExecutor && outputData == null) {
                    throw new SiddhiAppRuntimeException("Cannot retrieve the timestamp of event");
                }
                borrowedEvent.setOutputData(outputData, i);
            }
            streamEventChunk.add(borrowedEvent);
            noOfEvents++;
        }
        incrementalExecutor.execute(streamEventChunk);
        if (throughputTrackerInsert != null && siddhiAppContext.isStatsEnabled()) {
            throughputTrackerInsert.eventsIn(noOfEvents);
        }
    } finally {
        if (latencyTrackerInsert != null && siddhiAppContext.isStatsEnabled()) {
            latencyTrackerInsert.markOut();
        }
    }
}

Example 32 with ExpressionExecutor

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

the class IncrementalDataAggregator method process.

private void process(StreamEvent streamEvent, BaseIncrementalValueStore baseIncrementalValueStore) {
    List<ExpressionExecutor> expressionExecutors = baseIncrementalValueStore.getExpressionExecutors();
    for (int i = 0; i < expressionExecutors.size(); i++) {
        // keeping timestamp value location as null
        ExpressionExecutor expressionExecutor = expressionExecutors.get(i);
        baseIncrementalValueStore.setValue(expressionExecutor.execute(streamEvent), i + 1);
    }
    baseIncrementalValueStore.setProcessed(true);
}

Example 33 with ExpressionExecutor

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

the class IncrementalExecutor method cleanBaseIncrementalValueStore.

private void cleanBaseIncrementalValueStore(long startTimeOfNewAggregates, BaseIncrementalValueStore baseIncrementalValueStore) {
    baseIncrementalValueStore.clearValues();
    baseIncrementalValueStore.setTimestamp(startTimeOfNewAggregates);
    baseIncrementalValueStore.setProcessed(false);
    for (ExpressionExecutor expressionExecutor : baseIncrementalValueStore.getExpressionExecutors()) {
        expressionExecutor.execute(resetEvent);
    }
}

Example 34 with ExpressionExecutor

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

the class IncrementalExecutor method process.

private void process(StreamEvent streamEvent, BaseIncrementalValueStore baseIncrementalValueStore) {
    List<ExpressionExecutor> expressionExecutors = baseIncrementalValueStore.getExpressionExecutors();
    for (int i = 0; i < expressionExecutors.size(); i++) {
        // keeping timestamp value location as null
        ExpressionExecutor expressionExecutor = expressionExecutors.get(i);
        baseIncrementalValueStore.setValue(expressionExecutor.execute(streamEvent), i + 1);
    }
    baseIncrementalValueStore.setProcessed(true);
}

Example 35 with ExpressionExecutor

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

the class AggregationParser method setTimeStampTimeZoneExecutors.

private static ExpressionExecutor[] setTimeStampTimeZoneExecutors(AggregationDefinition aggregationDefinition, SiddhiAppContext siddhiAppContext, Map<String, Table> tableMap, List<VariableExpressionExecutor> variableExpressionExecutors, String aggregatorName, MetaStreamEvent metaStreamEvent) {
    Expression timestampExpression = aggregationDefinition.getAggregateAttribute();
    Expression timeZoneExpression;
    ExpressionExecutor timestampExecutor;
    ExpressionExecutor timeZoneExecutor;
    boolean isSystemTimeBased = false;
    // When execution is based on system time, the system's time zone would be used.
    if (timestampExpression == null) {
        isSystemTimeBased = true;
        timestampExpression = AttributeFunction.function("currentTimeMillis", null);
    }
    timestampExecutor = ExpressionParser.parseExpression(timestampExpression, metaStreamEvent, 0, tableMap, variableExpressionExecutors, siddhiAppContext, false, 0, aggregatorName);
    if (timestampExecutor.getReturnType() == Attribute.Type.STRING) {
        Expression expression = AttributeFunction.function("incrementalAggregator", "timestampInMilliseconds", timestampExpression);
        timestampExecutor = ExpressionParser.parseExpression(expression, metaStreamEvent, 0, tableMap, variableExpressionExecutors, siddhiAppContext, false, 0, aggregatorName);
        timeZoneExpression = AttributeFunction.function("incrementalAggregator", "getTimeZone", timestampExpression);
        timeZoneExecutor = ExpressionParser.parseExpression(timeZoneExpression, metaStreamEvent, 0, tableMap, variableExpressionExecutors, siddhiAppContext, false, 0, aggregatorName);
    } else if (timestampExecutor.getReturnType() == Attribute.Type.LONG) {
        if (isSystemTimeBased) {
            timeZoneExpression = AttributeFunction.function("incrementalAggregator", "getTimeZone", null);
            timeZoneExecutor = ExpressionParser.parseExpression(timeZoneExpression, metaStreamEvent, 0, tableMap, variableExpressionExecutors, siddhiAppContext, false, 0, aggregatorName);
        } else {
            // If long value is given, it's assumed that the
            timeZoneExpression = Expression.value("+00:00");
            // time zone is GMT
            timeZoneExecutor = ExpressionParser.parseExpression(timeZoneExpression, metaStreamEvent, 0, tableMap, variableExpressionExecutors, siddhiAppContext, false, 0, aggregatorName);
        }
    } else {
        throw new SiddhiAppCreationException("AggregationDefinition '" + aggregationDefinition.getId() + "'s aggregateAttribute expects " + "long or string, but found " + timestampExecutor.getReturnType() + ". " + "Hence, can't create the siddhi app '" + siddhiAppContext.getName() + "'", timestampExpression.getQueryContextStartIndex(), timestampExpression.getQueryContextEndIndex());
    }
    return new ExpressionExecutor[] { timestampExecutor, timeZoneExecutor };
}