Examples with ReturnStream io.siddhi.query.api.execution.query.output.stream.ReturnStream used on opensource projects

Example 1 with ReturnStream

use of io.siddhi.query.api.execution.query.output.stream.ReturnStream in project siddhi by wso2.

the class OnDemandQueryParser method populateFindOnDemandQueryRuntime.

private static void populateFindOnDemandQueryRuntime(FindOnDemandQueryRuntime findOnDemandQueryRuntime, MatchingMetaInfoHolder metaStreamInfoHolder, Selector selector, List<VariableExpressionExecutor> variableExpressionExecutors, Map<String, Table> tableMap, Map<String, Window> windowMap, int metaPosition, boolean groupBy, LockWrapper lockWrapper, SiddhiQueryContext siddhiQueryContext) {
    ReturnStream returnStream = new ReturnStream(OutputStream.OutputEventType.CURRENT_EVENTS);
    QuerySelector querySelector = SelectorParser.parse(selector, returnStream, metaStreamInfoHolder.getMetaStateEvent(), tableMap, variableExpressionExecutors, metaPosition, ProcessingMode.BATCH, false, siddhiQueryContext);
    PassThroughOutputRateLimiter rateLimiter = new PassThroughOutputRateLimiter(siddhiQueryContext.getName());
    rateLimiter.init(lockWrapper, groupBy, siddhiQueryContext);
    OutputCallback outputCallback = OutputParser.constructOutputCallback(returnStream, metaStreamInfoHolder.getMetaStateEvent().getOutputStreamDefinition(), tableMap, windowMap, true, siddhiQueryContext);
    rateLimiter.setOutputCallback(outputCallback);
    querySelector.setNextProcessor(rateLimiter);
    QueryParserHelper.reduceMetaComplexEvent(metaStreamInfoHolder.getMetaStateEvent());
    QueryParserHelper.updateVariablePosition(metaStreamInfoHolder.getMetaStateEvent(), variableExpressionExecutors);
    querySelector.setEventPopulator(StateEventPopulatorFactory.constructEventPopulator(metaStreamInfoHolder.getMetaStateEvent()));
    findOnDemandQueryRuntime.setStateEventFactory(new StateEventFactory(metaStreamInfoHolder.getMetaStateEvent()));
    findOnDemandQueryRuntime.setSelector(querySelector);
    findOnDemandQueryRuntime.setOutputAttributes(metaStreamInfoHolder.getMetaStateEvent().getOutputStreamDefinition().getAttributeList());
}

Example 2 with ReturnStream

use of io.siddhi.query.api.execution.query.output.stream.ReturnStream in project siddhi by wso2.

the class OnDemandQueryParser method buildExpectedOutputAttributes.

public static List<Attribute> buildExpectedOutputAttributes(OnDemandQuery onDemandQuery, Map<String, Table> tableMap, int metaPosition, MatchingMetaInfoHolder metaStreamInfoHolder, SiddhiQueryContext siddhiQueryContext) {
    MetaStateEvent selectMetaStateEvent = new MetaStateEvent(metaStreamInfoHolder.getMetaStateEvent().getMetaStreamEvents());
    SelectorParser.parse(onDemandQuery.getSelector(), new ReturnStream(OutputStream.OutputEventType.CURRENT_EVENTS), selectMetaStateEvent, tableMap, new ArrayList<>(), metaPosition, ProcessingMode.BATCH, false, siddhiQueryContext);
    return selectMetaStateEvent.getOutputStreamDefinition().getAttributeList();
}

Example 3 with ReturnStream

use of io.siddhi.query.api.execution.query.output.stream.ReturnStream in project siddhi by wso2.

the class TestStoreContainingInMemoryTable method compileSelection.

@Override
protected CompiledSelection compileSelection(List<SelectAttributeBuilder> selectAttributeBuilders, List<ExpressionBuilder> groupByExpressionBuilder, ExpressionBuilder havingExpressionBuilder, List<OrderByAttributeBuilder> orderByAttributeBuilders, Long limit, Long offset) {
    selectAttributeBuilders.forEach((selectAttributeBuilder -> {
        TestStoreConditionVisitor testStoreConditionVisitor = new TestStoreConditionVisitor("");
        selectAttributeBuilder.getExpressionBuilder().build(testStoreConditionVisitor);
        if (testStoreConditionVisitor.getStreamVarCount() > 0) {
            throw new SiddhiAppCreationException("testStoreContainingInMemoryTable does not support " + "lookup with stream variables");
        }
    }));
    CompiledSelectionWithCache compiledSelectionWithCache;
    MetaStateEvent metaStateEvent = matchingMetaInfoHolderForTestOnDemandQuery.getMetaStateEvent().clone();
    ReturnStream returnStream = new ReturnStream(OutputStream.OutputEventType.CURRENT_EVENTS);
    int metaPosition = SiddhiConstants.UNKNOWN_STATE;
    List<VariableExpressionExecutor> variableExpressionExecutorsForQuerySelector = new ArrayList<>();
    if (metaStateEvent.getOutputDataAttributes().size() == 0) {
        // MetaStateEvent metaStateEventWithOutputData = new MetaStateEvent(metaStateEvent.getStreamEventCount());
        for (Attribute outputAttribute : metaStateEvent.getMetaStreamEvents()[0].getOnAfterWindowData()) {
            metaStateEvent.getMetaStreamEvents()[0].addOutputData(outputAttribute);
        }
    }
    if (metaStateEvent.getOutputDataAttributes().size() > 0) {
        while (metaStateEvent.getMetaStreamEvent(0).getOutputData().size() > 0) {
            metaStateEvent.getMetaStreamEvent(0).getOutputData().remove(0);
        }
    }
    QuerySelector querySelector = SelectorParser.parse(selectorForTestOnDemandQuery, returnStream, metaStateEvent, tableMap, variableExpressionExecutorsForQuerySelector, metaPosition, ProcessingMode.BATCH, false, siddhiQueryContextForTestOnDemandQuery);
    QueryParserHelper.updateVariablePosition(metaStateEvent, variableExpressionExecutorsForQuerySelector);
    querySelector.setEventPopulator(StateEventPopulatorFactory.constructEventPopulator(metaStateEvent));
    compiledSelectionWithCache = new CompiledSelectionWithCache(null, querySelector, metaStateEvent, 0, null);
    return compiledSelectionWithCache;
}

Example 4 with ReturnStream

use of io.siddhi.query.api.execution.query.output.stream.ReturnStream in project siddhi by wso2.

the class TestStoreForCacheMiss method compileSelection.

@Override
protected CompiledSelection compileSelection(List<SelectAttributeBuilder> selectAttributeBuilders, List<ExpressionBuilder> groupByExpressionBuilder, ExpressionBuilder havingExpressionBuilder, List<OrderByAttributeBuilder> orderByAttributeBuilders, Long limit, Long offset) {
    selectAttributeBuilders.forEach((selectAttributeBuilder -> {
        TestStoreConditionVisitor testStoreConditionVisitor = new TestStoreConditionVisitor("");
        selectAttributeBuilder.getExpressionBuilder().build(testStoreConditionVisitor);
        if (testStoreConditionVisitor.getStreamVarCount() > 0) {
            throw new SiddhiAppCreationException("testStoreContainingInMemoryTable does not support " + "lookup with stream variables");
        }
    }));
    CompiledSelectionWithCache compiledSelectionWithCache;
    MetaStateEvent metaStateEvent = matchingMetaInfoHolderForTestOnDemandQuery.getMetaStateEvent().clone();
    ReturnStream returnStream = new ReturnStream(OutputStream.OutputEventType.CURRENT_EVENTS);
    int metaPosition = SiddhiConstants.UNKNOWN_STATE;
    List<VariableExpressionExecutor> variableExpressionExecutorsForQuerySelector = new ArrayList<>();
    if (metaStateEvent.getOutputDataAttributes().size() == 0) {
        for (Attribute outputAttribute : metaStateEvent.getMetaStreamEvents()[0].getOnAfterWindowData()) {
            metaStateEvent.getMetaStreamEvents()[0].addOutputData(outputAttribute);
        }
    }
    QuerySelector querySelector = SelectorParser.parse(selectorForTestOnDemandQuery, returnStream, metaStateEvent, tableMap, variableExpressionExecutorsForQuerySelector, metaPosition, ProcessingMode.BATCH, false, siddhiQueryContextForTestOnDemandQuery);
    QueryParserHelper.updateVariablePosition(metaStateEvent, variableExpressionExecutorsForQuerySelector);
    querySelector.setEventPopulator(StateEventPopulatorFactory.constructEventPopulator(metaStateEvent));
    compiledSelectionWithCache = new CompiledSelectionWithCache(null, querySelector, metaStateEvent, 0, null);
    return compiledSelectionWithCache;
}

Example 5 with ReturnStream

use of io.siddhi.query.api.execution.query.output.stream.ReturnStream in project siddhi by wso2.

the class Query method returns.

public Query returns(OutputStream.OutputEventType outputEventType) {
    this.outputStream = new ReturnStream(outputEventType);
    updateOutputEventType(outputRate, outputStream);
    return this;
}