Package com.espertech.esper.epl.join.table

Examples of com.espertech.esper.epl.join.table.EventTable

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        AgentInstanceViewFactoryChainContext viewFactoryChainContext = AgentInstanceViewFactoryChainContext.create(viewFactoryChain, agentInstanceContext, viewResourceDelegate.getPerStream()[0]);

        Viewable subselectView = services.getViewService().createViews(viewableRoot, viewFactoryChain, viewFactoryChainContext, false);

        // create index/holder table
        EventTable index = pair.getFirst().makeEventTable();
        stopCallbackList.add(new SubqueryStopCallback(index));

        // create strategy
        SubordTableLookupStrategy strategy = pair.getSecond().makeStrategy(index);
        SubselectAggregationPreprocessor subselectAggregationPreprocessor = null;
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        IndexedPropDesc[] rangePropDescs = btreeProps.toArray(new IndexedPropDesc[btreeProps.size()]);
        String[] rangeProps = IndexedPropDesc.getIndexProperties(rangePropDescs);
        Class[] rangeCoercionTypes = IndexedPropDesc.getCoercionTypes(rangePropDescs);

        QueryPlanIndexItem indexItem = new QueryPlanIndexItem(indexProps, indexCoercionTypes, rangeProps, rangeCoercionTypes);
        EventTable table = EventTableUtil.buildIndex(0, indexItem, indexedType, true);

        // fill table since its new
        EventBean[] events = new EventBean[1];
        for (EventBean prefilledEvent : prefilledEvents)
        {
            events[0] = prefilledEvent;
            table.add(events);
        }

        // add table
        tables.add(table);
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                }
            };
            Collections.sort(candidateTables,comparator);
        }
        indexMultiKey = candidateTables.get(0);
        EventTable tableFound = tableIndexesRefCount.get(indexMultiKey).getFirst();

        if (log.isDebugEnabled()) {
            String indexName = null;
            for (Map.Entry<String, EventTable> entry : explicitIndexNames.entrySet()) {
                if (entry.getValue() == tableFound) {
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            {
                Object parameterValue = validatedExprNodes[valueNum].evaluate(lookupEventsPerStream[row], true, exprEvaluatorContext);
                lookupValues[valueNum] = parameterValue;
            }

            EventTable result = null;

            // try the threadlocal iteration cache, if set
            if (localDataCache != null)
            {
                result = localDataCache.getCached(lookupValues);
            }

            // try the connection cache
            if (result == null)
            {
                result = dataCache.getCached(lookupValues);
                if ((result != null) && (localDataCache != null))
                {
                    localDataCache.put(lookupValues, result);
                }
            }

            if (result != null)     // found in cache
            {
                resultPerInputRow[row] = result;
            }
            else        // not found in cache, get from actual polling (db query)
            {
                try
                {
                    if (!strategyStarted)
                    {
                        pollExecStrategy.start();
                        strategyStarted = true;
                    }

                    // Poll using the polling execution strategy and lookup values
                    List<EventBean> pollResult = pollExecStrategy.poll(lookupValues);

                    // index the result, if required, using an indexing strategy
                    EventTable indexTable = indexingStrategy.index(pollResult, dataCache.isActive());

                    // assign to row
                    resultPerInputRow[row] = indexTable;

                    // save in cache
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            Map<String, QueryPlanIndexItem> items = indexSpecs[streamNo].getItems();
            indexesPerStream[streamNo] = new LinkedHashMap<String, EventTable>();

            for (Map.Entry<String, QueryPlanIndexItem> entry : items.entrySet()) {
                EventTable index;
                if (streamJoinAnalysisResult.getViewExternal()[streamNo] != null) {
                    index = streamJoinAnalysisResult.getViewExternal()[streamNo].getJoinIndexTable(items.get(entry.getKey()));
                }
                else {
                    index = EventTableUtil.buildIndex(streamNo, items.get(entry.getKey()), streamTypes[streamNo], false);
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        ViewServiceCreateResult createResult = services.getViewService().createViews(viewableRoot, viewFactoryChain, viewFactoryChainContext, false);
        final Viewable subselectView = createResult.getFinalViewable();

        // create index/holder table
        final EventTable index = pair.getFirst().makeEventTable();
        stopCallbackList.add(new SubqueryStopCallback(index));

        // create strategy
        SubordTableLookupStrategy strategy = pair.getSecond().makeStrategy(index);
        SubselectAggregationPreprocessor subselectAggregationPreprocessor = null;
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            Map<String, QueryPlanIndexItem> items = indexSpecs[streamNo].getItems();
            indexesPerStream[streamNo] = new LinkedHashMap<String, EventTable>();

            for (Map.Entry<String, QueryPlanIndexItem> entry : items.entrySet()) {
                EventTable index;
                if (streamJoinAnalysisResult.getViewExternal()[streamNo] != null) {
                    index = streamJoinAnalysisResult.getViewExternal()[streamNo].getJoinIndexTable(items.get(entry.getKey()));
                }
                else {
                    index = EventTableUtil.buildIndex(streamNo, items.get(entry.getKey()), streamTypes[streamNo], false);
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        IndexedPropDesc[] rangePropDescs = btreeProps.toArray(new IndexedPropDesc[btreeProps.size()]);
        String[] rangeProps = IndexedPropDesc.getIndexProperties(rangePropDescs);
        Class[] rangeCoercionTypes = IndexedPropDesc.getCoercionTypes(rangePropDescs);

        QueryPlanIndexItem indexItem = new QueryPlanIndexItem(indexProps, indexCoercionTypes, rangeProps, rangeCoercionTypes);
        EventTable table = EventTableFactory.buildIndex(0, indexItem, indexedType, true);

        // fill table since its new
        EventBean[] events = new EventBean[1];
        for (EventBean prefilledEvent : prefilledEvents)
        {
            events[0] = prefilledEvent;
            table.add(events);
        }

        // add table
        tables.add(table);
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                eventsPerStream = lookupEventsPerStream[row];
                Object lookupValue = evaluators[valueNum].evaluate(eventsPerStream, true, exprEvaluatorContext);
                lookupValues[valueNum] = lookupValue;
            }

            EventTable result = null;

            // try the threadlocal iteration cache, if set
            if (localDataCache != null)
            {
                result = localDataCache.getCached(lookupValues);
            }

            // try the connection cache
            if (result == null)
            {
                result = dataCache.getCached(lookupValues);
                if ((result != null) && (localDataCache != null))
                {
                    localDataCache.put(lookupValues, result);
                }
            }

            // use the result from cache
            if (result != null)     // found in cache
            {
                resultPerInputRow[row] = result;
            }
            else        // not found in cache, get from actual polling (db query)
            {
                try
                {
                    if (!strategyStarted)
                    {
                        pollExecStrategy.start();
                        strategyStarted = true;
                    }

                    // Poll using the polling execution strategy and lookup values
                    List<EventBean> pollResult = pollExecStrategy.poll(lookupValues);

                    // index the result, if required, using an indexing strategy
                    EventTable indexTable = indexingStrategy.index(pollResult, dataCache.isActive());

                    // assign to row
                    resultPerInputRow[row] = indexTable;

                    // save in cache
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     * @param indexesPerStream - tables for each stream
     * @param eventTypes - types of events in stream
     * @return lookup strategy instance
     */
    public final JoinExecTableLookupStrategy makeStrategy(Map<String,EventTable>[] indexesPerStream, EventType[] eventTypes, VirtualDWView[] viewExternals) {
        EventTable eventTable = indexesPerStream[this.getIndexedStream()].get(getIndexNum());
        if (viewExternals[indexedStream] != null) {
            return viewExternals[indexedStream].getJoinLookupStrategy(eventTable, getKeyDescriptor(), lookupStream);
        }
        return makeStrategyInternal(eventTable, eventTypes);
    }
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Related Classes of com.espertech.esper.epl.join.table.EventTable

  • com.espertech.esper.core.context.subselect.SubSelectStrategyFactoryLocalViewPreloaded
  • com.espertech.esper.epl.core.MethodPollingViewable
  • com.espertech.esper.epl.db.DatabasePollingViewable
  • com.espertech.esper.epl.join.base.JoinSetComposerFactoryImpl
  • com.espertech.esper.epl.join.base.JoinSetComposerPrototypeImpl
  • com.espertech.esper.epl.join.plan.TableLookupPlan
  • com.espertech.esper.epl.join.pollindex.PollResultIndexingStrategyComposite
  • com.espertech.esper.epl.join.pollindex.PollResultIndexingStrategyIndex
  • com.espertech.esper.epl.join.pollindex.PollResultIndexingStrategyIndexCoerce
  • com.espertech.esper.epl.join.pollindex.PollResultIndexingStrategyIndexCoerceSingle
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