org.apache.flink.table.runtime.operators.aggregate.window.combines

类 GlobalAggCombiner

java.lang.Object

org.apache.flink.table.runtime.operators.aggregate.window.combines.GlobalAggCombiner

所有已实现的接口:

RecordsCombiner

public class GlobalAggCombiner
extends Object
implements RecordsCombiner

An implementation of RecordsCombiner that accumulates local accumulators records into the window accumulator state.

Note: this only supports event-time window.

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	GlobalAggCombiner.Factory Factory to create GlobalAggCombiner.

从接口继承的嵌套类/接口 org.apache.flink.table.runtime.operators.window.combines.RecordsCombiner

RecordsCombiner.LocalFactory

构造器概要

构造器

构造器和说明
GlobalAggCombiner(WindowTimerService<Long> timerService, StateKeyContext keyContext, WindowValueState<Long> accState, NamespaceAggsHandleFunction<Long> localAggregator, NamespaceAggsHandleFunction<Long> globalAggregator)

方法概要

限定符和类型	方法和说明
void	close() Release resources allocated by this combine function.
void	combine(WindowKey windowKey, Iterator<org.apache.flink.table.data.RowData> localAccs) Combines the buffered data into state based on the given window-key pair.

从类继承的方法 java.lang.Object

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

构造器详细资料

GlobalAggCombiner

public GlobalAggCombiner(WindowTimerService<Long> timerService,
                         StateKeyContext keyContext,
                         WindowValueState<Long> accState,
                         NamespaceAggsHandleFunction<Long> localAggregator,
                         NamespaceAggsHandleFunction<Long> globalAggregator)

方法详细资料

combine

public void combine(WindowKey windowKey,
                    Iterator<org.apache.flink.table.data.RowData> localAccs)
             throws Exception

从接口复制的说明: RecordsCombiner

Combines the buffered data into state based on the given window-key pair.

指定者:

combine 在接口中 RecordsCombiner

参数:

windowKey - the window-key pair that the buffered data belong to, the window-key object is reused.

localAccs - the buffered data, the iterator and RowData objects are reused.

抛出:

Exception

close

public void close()
           throws Exception

从接口复制的说明: RecordsCombiner

Release resources allocated by this combine function.

指定者:

close 在接口中 RecordsCombiner

抛出:

Exception