Package com.espertech.esper.epl.expression

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

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        InternalEventRouterEntry lastEntry = null;

        for (int i = 0; i < entries.length; i++)
        {
            InternalEventRouterEntry entry = entries[i];
            ExprEvaluator whereClause = entry.getOptionalWhereClause();
            if (whereClause != null)
            {
                Boolean result = (Boolean) whereClause.evaluate(eventsPerStream, true, exprEvaluatorContext);
                if ((result == null) || (!result))
                {
                    continue;
                }
            }
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                }
            }

            // get first parameter
            ExprNode paramExpr = item.getFunction().getParameters().get(0);
            ExprEvaluator eval = paramExpr.getExprEvaluator();
            Class paramType = eval.getType();
            EventPropertyGetter getter;

            if (hashFunction == HashFunctionEnum.CONSISTENT_HASH_CRC32) {
                if (item.getFunction().getParameters().size() > 1 || paramType != String.class) {
                    getter = new ContextControllerHashedGetterCRC32Serialized(factoryContext.getAgentInstanceContextCreate().getStatementContext().getStatementName(), item.getFunction().getParameters(), hashedSpec.getGranularity());
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                    continue;
                }
                additionalProps.add(propertyDescriptor.getPropertyName());
                final EventPropertyGetter getter = parentEventType.getGetter(propertyDescriptor.getPropertyName());
                final Class type = propertyDescriptor.getPropertyType();
                ExprEvaluator exprEvaluator = new ExprEvaluator() {
                    public Object evaluate(EventBean[] eventsPerStream, boolean isNewData, ExprEvaluatorContext context) {
                        return getter.get(eventsPerStream[0]);
                    }

                    public Class getType() {
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                NamedWindowProcessorInstance sourceWindowInstances = namedWindowProcessor.getProcessorInstance(agentInstanceContext);
                List<EventBean> events = new ArrayList<EventBean>();
                if (statementSpec.getCreateWindowDesc().getInsertFilter() != null)
                {
                    EventBean[] eventsPerStream = new EventBean[1];
                    ExprEvaluator filter = statementSpec.getCreateWindowDesc().getInsertFilter().getExprEvaluator();
                    for (Iterator<EventBean> it = sourceWindowInstances.getTailViewInstance().iterator(); it.hasNext();)
                    {
                        EventBean candidate = it.next();
                        eventsPerStream[0] = candidate;
                        Boolean result = (Boolean) filter.evaluate(eventsPerStream, true, agentInstanceContext);
                        if ((result == null) || (!result))
                        {
                            continue;
                        }
                        events.add(candidate);
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        QueryGraphValueEntryRange rangeProp = subqRangeKey.getRangeInfo();

        if (rangeProp.getType().isRange()) {
            QueryGraphValueEntryRangeIn in = (QueryGraphValueEntryRangeIn) rangeProp;
            ExprEvaluator start = in.getExprStart().getExprEvaluator();
            boolean includeStart = rangeProp.getType().isIncludeStart();

            ExprEvaluator end = in.getExprEnd().getExprEvaluator();
            boolean includeEnd = rangeProp.getType().isIncludeEnd();

            if (!rangeProp.getType().isRangeInverted()) {
                strategy = new CompositeAccessStrategyRangeNormal(isNWOnTrigger, lookupStream, numStreams, start, includeStart, end, includeEnd, coercionType, ((QueryGraphValueEntryRangeIn) rangeProp).isAllowRangeReversal());
            }
            else {
                strategy = new CompositeAccessStrategyRangeInverted(isNWOnTrigger, lookupStream, numStreams, start, includeStart, end, includeEnd, coercionType);
            }
        }
        else {
            QueryGraphValueEntryRangeRelOp relOp = (QueryGraphValueEntryRangeRelOp) rangeProp;
            ExprEvaluator key = relOp.getExpression().getExprEvaluator();
            if (rangeProp.getType() == QueryGraphRangeEnum.GREATER_OR_EQUAL) {
                strategy = new CompositeAccessStrategyGE(isNWOnTrigger, lookupStream, numStreams, key, coercionType);
            }
            else if (rangeProp.getType() == QueryGraphRangeEnum.GREATER) {
                strategy = new CompositeAccessStrategyGT(isNWOnTrigger, lookupStream, numStreams, key, coercionType);
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        return new EventType[] {typeResult, evalEventType};
    }

    public EnumEval getEnumEval(EventAdapterService eventAdapterService, StreamTypeService streamTypeService, String statementId, String enumMethodUsedName, List<ExprDotEvalParam> bodiesAndParameters, EventType inputEventType, Class collectionComponentType, int numStreamsIncoming) {
        ExprDotEvalParam initValueParam = bodiesAndParameters.get(0);
        ExprEvaluator initValueEval = initValueParam.getBodyEvaluator();
        super.setTypeInfo(ExprDotEvalTypeInfo.scalarOrUnderlying(JavaClassHelper.getBoxedType(initValueEval.getType())));

        ExprDotEvalParamLambda resultAndAdd = (ExprDotEvalParamLambda) bodiesAndParameters.get(1);

        if (inputEventType != null) {
            return new EnumEvalAggregateEvents(initValueEval,
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        QueryGraphValueEntryRange rangeKeyPair = streamRangeKey.getRangeInfo();

        if (rangeKeyPair.getType().isRange()) {
            QueryGraphValueEntryRangeIn in = (QueryGraphValueEntryRangeIn) rangeKeyPair;
            ExprEvaluator startExpr = in.getExprStart().getExprEvaluator();
            ExprEvaluator endExpr = in.getExprEnd().getExprEvaluator();
            boolean includeStart = rangeKeyPair.getType().isIncludeStart();

            boolean includeEnd = rangeKeyPair.getType().isIncludeEnd();
            if (!rangeKeyPair.getType().isRangeInverted()) {
                return new SortedAccessStrategyRange(isNWOnTrigger, lookupStream, numStreams, startExpr, includeStart, endExpr, includeEnd, in.isAllowRangeReversal());
            }
            else {
                return new SortedAccessStrategyRangeInverted(isNWOnTrigger, lookupStream, numStreams, startExpr, includeStart, endExpr, includeEnd);
            }
        }
        else {
            QueryGraphValueEntryRangeRelOp relOp = (QueryGraphValueEntryRangeRelOp) rangeKeyPair;
            ExprEvaluator keyExpr = relOp.getExpression().getExprEvaluator();
            if (rangeKeyPair.getType() == QueryGraphRangeEnum.GREATER_OR_EQUAL) {
                return new SortedAccessStrategyGE(isNWOnTrigger, lookupStream, numStreams, keyExpr);
            }
            else if (rangeKeyPair.getType() == QueryGraphRangeEnum.GREATER) {
                return new SortedAccessStrategyGT(isNWOnTrigger, lookupStream, numStreams, keyExpr);
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    public JoinSetComposerDesc create(Viewable[] streamViews) {
        QueryStrategy[] queryStrategies = new QueryStrategy[streamTypes.length];

        HistoricalEventViewable viewable = (HistoricalEventViewable) streamViews[polledViewNum];
        ExprEvaluator outerJoinEqualsNodeEval = outerJoinEqualsNode == null ? null : outerJoinEqualsNode.getExprEvaluator();
        queryStrategies[streamViewNum] = new HistoricalDataQueryStrategy(streamViewNum, polledViewNum, viewable, isOuterJoin, outerJoinEqualsNodeEval,
                indexStrategies.getFirst(), indexStrategies.getSecond());

        // for strictly historical joins, create a query strategy for the non-subordinate historical view
        if (isAllHistoricalNoSubordinate)
        {
            boolean isOuterJoin = false;
            if (!outerJoinDescList.isEmpty())
            {
                OuterJoinDesc outerJoinDesc = outerJoinDescList.get(0);
                if (outerJoinDesc.getOuterJoinType().equals(OuterJoinType.FULL))
                {
                    isOuterJoin = true;
                }
                else if ((outerJoinDesc.getOuterJoinType().equals(OuterJoinType.LEFT)) &&
                        (polledViewNum == 0))
                {
                        isOuterJoin = true;
                }
                else if ((outerJoinDesc.getOuterJoinType().equals(OuterJoinType.RIGHT)) &&
                        (polledViewNum == 1))
                {
                        isOuterJoin = true;
                }
            }
            viewable = (HistoricalEventViewable) streamViews[streamViewNum];
            queryStrategies[polledViewNum] = new HistoricalDataQueryStrategy(polledViewNum, streamViewNum, viewable, isOuterJoin, outerJoinEqualsNodeEval,
                    new HistoricalIndexLookupStrategyNoIndex(), new PollResultIndexingStrategyNoIndex());
        }

        JoinSetComposer composer = new JoinSetComposerHistoricalImpl(null, queryStrategies, streamViews, exprEvaluatorContext);
        ExprEvaluator postJoinEval = optionalFilterNode == null ? null : optionalFilterNode.getExprEvaluator();
        return new JoinSetComposerDesc(composer, postJoinEval);
    }
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            if (index == -1) {
                throw new IllegalStateException("Could not find index property for lookup '" + indexedKeyProps[i]);
            }
            hashesDesc[i] = hashJoinedProps[index];
            hashPropCoercionTypes[i] = indexedKeyProps[i].getCoercionType();
            ExprEvaluator evaluatorHashkey = hashesDesc[i].getHashKey().getKeyExpr().getExprEvaluator();
            if (evaluatorHashkey != null && indexedKeyProps[i].getCoercionType() != evaluatorHashkey.getType()) {   // we allow null evaluator
                isCoerceHash = true;
            }
        }

        // map the order of range columns (range) to the range information available
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        this.eventsPerStream = new EventBean[lookupStream + 1];
        this.lookupStream = lookupStream;

        int count = 0;
        for (QueryGraphValueEntryHashKeyed hashKey : keyDescriptor.getHashes()) {
            ExprEvaluator evaluator = hashKey.getKeyExpr().getExprEvaluator();
            evaluators[count] = new ExternalEvaluatorHashRelOp(evaluator);
            count++;
        }
        for (QueryGraphValueEntryRange rangeKey : keyDescriptor.getRanges()) {
            if (rangeKey.getType().isRange()) {
                QueryGraphValueEntryRangeIn range = (QueryGraphValueEntryRangeIn) rangeKey;
                ExprEvaluator evaluatorStart = range.getExprStart().getExprEvaluator();
                ExprEvaluator evaluatorEnd = range.getExprEnd().getExprEvaluator();
                evaluators[count] = new ExternalEvaluatorBtreeRange(evaluatorStart, evaluatorEnd);
            }
            else {
                QueryGraphValueEntryRangeRelOp relOp = (QueryGraphValueEntryRangeRelOp) rangeKey;
                ExprEvaluator evaluator = relOp.getExpression().getExprEvaluator();
                evaluators[count] = new ExternalEvaluatorHashRelOp(evaluator);
            }
            count++;
        }
    }
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Related Classes of com.espertech.esper.epl.expression.ExprEvaluator

  • com.espertech.esper.core.context.factory.StatementAgentInstanceFactoryCreateWindow
  • com.espertech.esper.core.context.mgr.ContextControllerHashFactory
  • com.espertech.esper.core.InternalEventRouterPreprocessor
  • com.espertech.esper.core.service.InternalEventRouterPreprocessor
  • com.espertech.esper.epl.core.BindProcessor
  • com.espertech.esper.epl.core.eval.EvalSelectStreamWUndRecastMapFactory
  • com.espertech.esper.epl.core.eval.EvalSelectStreamWUndRecastObjectArrayFactory
  • com.espertech.esper.epl.core.OrderByProcessorImpl
  • com.espertech.esper.epl.core.SelectExprInsertEventBean
  • com.espertech.esper.epl.core.SelectExprInsertEventBeanFactory
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