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

类 TopNRecordsCombiner.Factory

java.lang.Object

org.apache.flink.table.runtime.operators.rank.window.combines.TopNRecordsCombiner.Factory

所有已实现的接口:

Serializable, RecordsCombiner.Factory

封闭类:

TopNRecordsCombiner

public static final class TopNRecordsCombiner.Factory
extends Object
implements RecordsCombiner.Factory

Factory to create TopNRecordsCombiner.

另请参阅:

序列化表格

构造器概要

构造器

构造器和说明
Factory(GeneratedRecordComparator genSortKeyComparator, RowDataKeySelector sortKeySelector, org.apache.flink.api.common.typeutils.TypeSerializer<org.apache.flink.table.data.RowData> recordSerializer, long topN)

方法概要

限定符和类型	方法和说明
RecordsCombiner	createRecordsCombiner(org.apache.flink.api.common.functions.RuntimeContext runtimeContext, WindowTimerService<Long> timerService, org.apache.flink.runtime.state.KeyedStateBackend<org.apache.flink.table.data.RowData> stateBackend, WindowState<Long> windowState, boolean isEventTime) Creates a RecordsCombiner that can combine buffered data into states.

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

Factory

public Factory(GeneratedRecordComparator genSortKeyComparator,
               RowDataKeySelector sortKeySelector,
               org.apache.flink.api.common.typeutils.TypeSerializer<org.apache.flink.table.data.RowData> recordSerializer,
               long topN)

方法详细资料

createRecordsCombiner

public RecordsCombiner createRecordsCombiner(org.apache.flink.api.common.functions.RuntimeContext runtimeContext,
                                             WindowTimerService<Long> timerService,
                                             org.apache.flink.runtime.state.KeyedStateBackend<org.apache.flink.table.data.RowData> stateBackend,
                                             WindowState<Long> windowState,
                                             boolean isEventTime)
                                      throws Exception

从接口复制的说明: RecordsCombiner.Factory

Creates a RecordsCombiner that can combine buffered data into states.

指定者:

createRecordsCombiner 在接口中 RecordsCombiner.Factory

参数:

runtimeContext - the current RuntimeContext

timerService - the service to register event-time and processing-time timers

stateBackend - the state backend to accessing states

windowState - the window state to flush buffered data into.

isEventTime - indicates whether the operator works in event-time or processing-time mode, used for register corresponding timers.

抛出:

Exception