Examples of com.espertech.esper.epl.db.DataCacheClearableMap

com.espertech.esper.epl.db.DataCacheClearableMap
For use in iteration over historical joins, a {@link DataCache} implementationthat serves to hold EventBean rows generated during a join evaluation involving historical streams stable for the same cache lookup keys.

        EventBean[] lookupEvents = new EventBean[1];


        // Assign a local cache for the thread's evaluation of the join
        // This ensures that if a SQL/method generates a row for a result set based on an input parameter, the event instance is the same
        // in the join, and thus the same row does not appear twice.
        DataCacheClearableMap caches[] = new DataCacheClearableMap[queryStrategies.length];
        assignThreadLocalCache(streamViews, caches);


        // perform join
        try
        {

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        for (int stream = 0; stream < streamViews.length; stream++)
        {
            if (streamViews[stream] instanceof HistoricalEventViewable)
            {
                HistoricalEventViewable historicalViewable = (HistoricalEventViewable) streamViews[stream];
                caches[stream] = new DataCacheClearableMap();
                historicalViewable.getDataCacheThreadLocal().set(caches[stream]);
            }
        }
    }

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        EventBean[] lookupEvents = new EventBean[1];


        // Assign a local cache for the thread's evaluation of the join
        // This ensures that if a SQL/method generates a row for a result set based on an input parameter, the event instance is the same
        // in the join, and thus the same row does not appear twice.
        DataCacheClearableMap caches[] = new DataCacheClearableMap[queryStrategies.length];
        assignThreadLocalCache(streamViews, caches);


        // perform join
        try
        {

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        for (int stream = 0; stream < streamViews.length; stream++)
        {
            if (streamViews[stream] instanceof HistoricalEventViewable)
            {
                HistoricalEventViewable historicalViewable = (HistoricalEventViewable) streamViews[stream];
                caches[stream] = new DataCacheClearableMap();
                historicalViewable.getDataCacheThreadLocal().set(caches[stream]);
            }
        }
    }

View Full Code Here

        EventBean[] lookupEvents = new EventBean[1];


        // Assign a local cache for the thread's evaluation of the join
        // This ensures that if a SQL/method generates a row for a result set based on an input parameter, the event instance is the same
        // in the join, and thus the same row does not appear twice.
        DataCacheClearableMap caches[] = new DataCacheClearableMap[queryStrategies.length];
        assignThreadLocalCache(streamViews, caches);


        // perform join
        try
        {

View Full Code Here

        for (int stream = 0; stream < streamViews.length; stream++)
        {
            if (streamViews[stream] instanceof HistoricalEventViewable)
            {
                HistoricalEventViewable historicalViewable = (HistoricalEventViewable) streamViews[stream];
                caches[stream] = new DataCacheClearableMap();
                historicalViewable.getDataCacheThreadLocal().set(caches[stream]);
            }
        }
    }

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Related Classes of com.espertech.esper.epl.db.DataCacheClearableMap

com.espertech.esper.epl.join.base.JoinSetComposerHistoricalImpl

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