Examples with ComplexEventChunk org.ballerinalang.siddhi.core.event.ComplexEventChunk used on opensource projects

Example 6 with ComplexEventChunk

use of org.ballerinalang.siddhi.core.event.ComplexEventChunk in project ballerina by ballerina-lang.

the class CompareCollectionExecutor method find.

public StreamEvent find(StateEvent matchingEvent, IndexedEventHolder indexedEventHolder, StreamEventCloner storeEventCloner) {
    ComplexEventChunk<StreamEvent> returnEventChunk = new ComplexEventChunk<StreamEvent>(false);
    Collection<StreamEvent> storeEventSet = findEvents(matchingEvent, indexedEventHolder);
    if (storeEventSet == null) {
        // triggering sequential scan
        Collection<StreamEvent> storeEvents = indexedEventHolder.getAllEvents();
        for (StreamEvent storeEvent : storeEvents) {
            matchingEvent.setEvent(storeEventIndex, storeEvent);
            if ((Boolean) expressionExecutor.execute(matchingEvent)) {
                if (storeEventCloner != null) {
                    returnEventChunk.add(storeEventCloner.copyStreamEvent(storeEvent));
                } else {
                    returnEventChunk.add(storeEvent);
                }
            }
            matchingEvent.setEvent(storeEventIndex, null);
        }
        return returnEventChunk.getFirst();
    } else {
        for (StreamEvent storeEvent : storeEventSet) {
            if (storeEventCloner != null) {
                returnEventChunk.add(storeEventCloner.copyStreamEvent(storeEvent));
            } else {
                returnEventChunk.add(storeEvent);
            }
        }
        return returnEventChunk.getFirst();
    }
}

Example 7 with ComplexEventChunk

use of org.ballerinalang.siddhi.core.event.ComplexEventChunk in project ballerina by ballerina-lang.

the class NonCollectionExecutor method find.

public StreamEvent find(StateEvent matchingEvent, IndexedEventHolder indexedEventHolder, StreamEventCloner storeEventCloner) {
    if ((Boolean) expressionExecutor.execute(matchingEvent)) {
        ComplexEventChunk<StreamEvent> returnEventChunk = new ComplexEventChunk<StreamEvent>(false);
        Collection<StreamEvent> storeEvents = indexedEventHolder.getAllEvents();
        for (StreamEvent storeEvent : storeEvents) {
            if (storeEventCloner != null) {
                returnEventChunk.add(storeEventCloner.copyStreamEvent(storeEvent));
            } else {
                returnEventChunk.add(storeEvent);
            }
        }
        return returnEventChunk.getFirst();
    } else {
        return null;
    }
}

Example 8 with ComplexEventChunk

use of org.ballerinalang.siddhi.core.event.ComplexEventChunk in project ballerina by ballerina-lang.

the class AggregationRuntime method compileExpression.

public CompiledCondition compileExpression(Expression expression, Within within, Expression per, MatchingMetaInfoHolder matchingMetaInfoHolder, List<VariableExpressionExecutor> variableExpressionExecutors, Map<String, Table> tableMap, String queryName, SiddhiAppContext siddhiAppContext) {
    Map<TimePeriod.Duration, CompiledCondition> withinTableCompiledConditions = new HashMap<>();
    CompiledCondition withinInMemoryCompileCondition;
    CompiledCondition onCompiledCondition;
    List<Attribute> additionalAttributes = new ArrayList<>();
    // Define additional attribute list
    additionalAttributes.add(new Attribute("_START", Attribute.Type.LONG));
    additionalAttributes.add(new Attribute("_END", Attribute.Type.LONG));
    // Get table definition. Table definitions for all the tables used to persist aggregates are similar.
    // Therefore it's enough to get the definition from one table.
    AbstractDefinition tableDefinition = ((Table) aggregationTables.values().toArray()[0]).getTableDefinition();
    // Alter existing meta stream event or create new one if a meta stream doesn't exist
    // After calling this method the original MatchingMetaInfoHolder's meta stream event would be altered
    MetaStreamEvent newMetaStreamEventWithStartEnd = createNewMetaStreamEventWithStartEnd(matchingMetaInfoHolder, additionalAttributes);
    MatchingMetaInfoHolder alteredMatchingMetaInfoHolder = null;
    // Alter meta info holder to contain stream event and aggregate both when it's a store query
    if (matchingMetaInfoHolder.getMetaStateEvent().getMetaStreamEvents().length == 1) {
        matchingMetaInfoHolder = alterMetaInfoHolderForStoreQuery(newMetaStreamEventWithStartEnd, matchingMetaInfoHolder);
        alteredMatchingMetaInfoHolder = matchingMetaInfoHolder;
    }
    // Create new MatchingMetaInfoHolder containing newMetaStreamEventWithStartEnd and table meta event
    MatchingMetaInfoHolder streamTableMetaInfoHolderWithStartEnd = createNewStreamTableMetaInfoHolder(newMetaStreamEventWithStartEnd, tableDefinition);
    // Create per expression executor
    ExpressionExecutor perExpressionExecutor = ExpressionParser.parseExpression(per, matchingMetaInfoHolder.getMetaStateEvent(), matchingMetaInfoHolder.getCurrentState(), tableMap, variableExpressionExecutors, siddhiAppContext, false, 0, queryName);
    if (perExpressionExecutor.getReturnType() != Attribute.Type.STRING) {
        throw new SiddhiAppCreationException("Query " + queryName + "'s per value expected a string but found " + perExpressionExecutor.getReturnType(), per.getQueryContextStartIndex(), per.getQueryContextEndIndex());
    }
    // Create within expression
    Expression withinExpression;
    Expression start = Expression.variable(additionalAttributes.get(0).getName());
    Expression end = Expression.variable(additionalAttributes.get(1).getName());
    Expression compareWithStartTime = Compare.compare(start, Compare.Operator.LESS_THAN_EQUAL, Expression.variable("AGG_TIMESTAMP"));
    Expression compareWithEndTime = Compare.compare(Expression.variable("AGG_TIMESTAMP"), Compare.Operator.LESS_THAN, end);
    withinExpression = Expression.and(compareWithStartTime, compareWithEndTime);
    // Create start and end time expression
    Expression startEndTimeExpression;
    if (within.getTimeRange().size() == 1) {
        startEndTimeExpression = new AttributeFunction("incrementalAggregator", "startTimeEndTime", within.getTimeRange().get(0));
    } else {
        // within.getTimeRange().size() == 2
        startEndTimeExpression = new AttributeFunction("incrementalAggregator", "startTimeEndTime", within.getTimeRange().get(0), within.getTimeRange().get(1));
    }
    ExpressionExecutor startTimeEndTimeExpressionExecutor = ExpressionParser.parseExpression(startEndTimeExpression, matchingMetaInfoHolder.getMetaStateEvent(), matchingMetaInfoHolder.getCurrentState(), tableMap, variableExpressionExecutors, siddhiAppContext, false, 0, queryName);
    // These compile conditions are used to check whether the aggregates in tables are within the given duration.
    for (Map.Entry<TimePeriod.Duration, Table> entry : aggregationTables.entrySet()) {
        CompiledCondition withinTableCompileCondition = entry.getValue().compileCondition(withinExpression, streamTableMetaInfoHolderWithStartEnd, siddhiAppContext, variableExpressionExecutors, tableMap, queryName);
        withinTableCompiledConditions.put(entry.getKey(), withinTableCompileCondition);
    }
    // Create compile condition for in-memory data.
    // This compile condition is used to check whether the running aggregates (in-memory data)
    // are within given duration
    withinInMemoryCompileCondition = OperatorParser.constructOperator(new ComplexEventChunk<>(true), withinExpression, streamTableMetaInfoHolderWithStartEnd, siddhiAppContext, variableExpressionExecutors, tableMap, queryName);
    // On compile condition.
    // After finding all the aggregates belonging to within duration, the final on condition (given as
    // "on stream1.name == aggregator.nickName ..." in the join query) must be executed on that data.
    // This condition is used for that purpose.
    onCompiledCondition = OperatorParser.constructOperator(new ComplexEventChunk<>(true), expression, matchingMetaInfoHolder, siddhiAppContext, variableExpressionExecutors, tableMap, queryName);
    return new IncrementalAggregateCompileCondition(withinTableCompiledConditions, withinInMemoryCompileCondition, onCompiledCondition, tableMetaStreamEvent, aggregateMetaSteamEvent, additionalAttributes, alteredMatchingMetaInfoHolder, perExpressionExecutor, startTimeEndTimeExpressionExecutor);
}

Example 9 with ComplexEventChunk

use of org.ballerinalang.siddhi.core.event.ComplexEventChunk in project ballerina by ballerina-lang.

the class IncrementalExecutor method sendTimerEvent.

private void sendTimerEvent(String timeZone) {
    if (getNextExecutor() != null) {
        StreamEvent timerEvent = streamEventPool.borrowEvent();
        timerEvent.setType(ComplexEvent.Type.TIMER);
        timerEvent.setTimestamp(IncrementalTimeConverterUtil.getPreviousStartTime(startTimeOfAggregates, this.duration, timeZone));
        ComplexEventChunk<StreamEvent> timerStreamEventChunk = new ComplexEventChunk<>(true);
        timerStreamEventChunk.add(timerEvent);
        next.execute(timerStreamEventChunk);
    }
}

Example 10 with ComplexEventChunk

use of org.ballerinalang.siddhi.core.event.ComplexEventChunk in project ballerina by ballerina-lang.

the class QuerySelector method orderEventChunk.

private void orderEventChunk(ComplexEventChunk complexEventChunk) {
    ComplexEventChunk orderingComplexEventChunk = new ComplexEventChunk(complexEventChunk.isBatch());
    List<ComplexEvent> eventList = new ArrayList<>();
    ComplexEvent.Type currentEventType = null;
    complexEventChunk.reset();
    if (complexEventChunk.getFirst() != null) {
        currentEventType = complexEventChunk.getFirst().getType();
        while (complexEventChunk.hasNext()) {
            ComplexEvent event = complexEventChunk.next();
            complexEventChunk.remove();
            if (currentEventType == event.getType()) {
                eventList.add(event);
            } else {
                currentEventType = event.getType();
                eventList.sort(orderByEventComparator);
                for (ComplexEvent complexEvent : eventList) {
                    orderingComplexEventChunk.add(complexEvent);
                }
                eventList.clear();
                eventList.add(event);
            }
        }
        eventList.sort(orderByEventComparator);
        for (ComplexEvent complexEvent : eventList) {
            orderingComplexEventChunk.add(complexEvent);
        }
        complexEventChunk.clear();
        complexEventChunk.add(orderingComplexEventChunk.getFirst());
    }
}