Package io.siddhi.core.aggregation

Class IncrementalDataAggregator

java.lang.Object

io.siddhi.core.aggregation.IncrementalDataAggregator

public class IncrementalDataAggregator
extends Object

This class implements the logic to aggregate data that is in-memory or in tables, in incremental data processing.

In-memory data is required to be aggregated when retrieving values from an aggregate. Table data (tables used to persist incremental aggregates) needs to be aggregated when querying aggregate data from a different server (apart from the server, which was used to define the aggregation).

Constructor Summary

Constructors

Constructor	Description
IncrementalDataAggregator(List<io.siddhi.query.api.aggregation.TimePeriod.Duration> incrementalDurations, io.siddhi.query.api.aggregation.TimePeriod.Duration durationToAggregate, long oldestEventTimestamp, List<ExpressionExecutor> baseExecutorsForFind, ExpressionExecutor shouldUpdateTimestamp, boolean groupBy, MetaStreamEvent metaStreamEvent, String timeZone)

Method Summary

Modifier and Type	Method	Description
ComplexEventChunk<StreamEvent>	aggregateInMemoryData(Map<io.siddhi.query.api.aggregation.TimePeriod.Duration,Executor> incrementalExecutorMap)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

IncrementalDataAggregator

public IncrementalDataAggregator(List<io.siddhi.query.api.aggregation.TimePeriod.Duration> incrementalDurations,
                                 io.siddhi.query.api.aggregation.TimePeriod.Duration durationToAggregate,
                                 long oldestEventTimestamp,
                                 List<ExpressionExecutor> baseExecutorsForFind,
                                 ExpressionExecutor shouldUpdateTimestamp,
                                 boolean groupBy,
                                 MetaStreamEvent metaStreamEvent,
                                 String timeZone)

Method Detail

aggregateInMemoryData

public ComplexEventChunk<StreamEvent> aggregateInMemoryData(Map<io.siddhi.query.api.aggregation.TimePeriod.Duration,Executor> incrementalExecutorMap)