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

类 SliceSharedWindowAggProcessor

java.lang.Object

org.apache.flink.table.runtime.operators.aggregate.window.processors.AbstractWindowAggProcessor

org.apache.flink.table.runtime.operators.aggregate.window.processors.SliceSharedWindowAggProcessor

所有已实现的接口:

Serializable, SliceSharedAssigner.MergeCallback, SlicingWindowProcessor<Long>

public final class SliceSharedWindowAggProcessor
extends AbstractWindowAggProcessor
implements SliceSharedAssigner.MergeCallback

An window aggregate processor implementation which works for SliceSharedAssigner, e.g. hopping windows and cumulative windows.

另请参阅:

序列化表格

嵌套类概要

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

SlicingWindowProcessor.Context<W>

字段概要

从类继承的字段 org.apache.flink.table.runtime.operators.aggregate.window.processors.AbstractWindowAggProcessor

accSerializer, aggregator, clockService, ctx, currentProgress, genAggsHandler, isEventTime, reuseOutput, shiftTimeZone, sliceAssigner, useDayLightSaving, windowBuffer, windowBufferFactory, windowInterval, windowState, windowTimerService

构造器概要

构造器

构造器和说明
SliceSharedWindowAggProcessor(GeneratedNamespaceAggsHandleFunction<Long> genAggsHandler, WindowBuffer.Factory bufferFactory, SliceSharedAssigner sliceAssigner, org.apache.flink.api.common.typeutils.TypeSerializer<org.apache.flink.table.data.RowData> accSerializer, int indexOfCountStar, java.time.ZoneId shiftTimeZone)

方法概要

限定符和类型	方法和说明
void	fireWindow(Long windowEnd) Emit results of the given window.
void	merge(Long mergeResult, Iterable<Long> toBeMerged) Specifies that states of the given slices should be merged into the result slice.
protected long	sliceStateMergeTarget(long sliceToMerge) Returns the slice state target to merge the given slice into when firing windows.

从类继承的方法 org.apache.flink.table.runtime.operators.aggregate.window.processors.AbstractWindowAggProcessor

advanceProgress, clearWindow, close, collect, createWindowSerializer, open, prepareCheckpoint, processElement

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

SliceSharedWindowAggProcessor

public SliceSharedWindowAggProcessor(GeneratedNamespaceAggsHandleFunction<Long> genAggsHandler,
                                     WindowBuffer.Factory bufferFactory,
                                     SliceSharedAssigner sliceAssigner,
                                     org.apache.flink.api.common.typeutils.TypeSerializer<org.apache.flink.table.data.RowData> accSerializer,
                                     int indexOfCountStar,
                                     java.time.ZoneId shiftTimeZone)

方法详细资料

fireWindow

public void fireWindow(Long windowEnd)
                throws Exception

从接口复制的说明: SlicingWindowProcessor

Emit results of the given window.

Note: the key context has been set.

指定者:

fireWindow 在接口中 SlicingWindowProcessor<Long>

参数:

windowEnd - the window to emit

抛出:

Exception

merge

public void merge(@Nullable
                  Long mergeResult,
                  Iterable<Long> toBeMerged)
           throws Exception

从接口复制的说明: SliceSharedAssigner.MergeCallback

Specifies that states of the given slices should be merged into the result slice.

指定者:

merge 在接口中 SliceSharedAssigner.MergeCallback

参数:

mergeResult - The resulting merged slice, null if it represents a non-state namespace.

toBeMerged - The list of slices that should be merged into one slice.

抛出:

Exception

sliceStateMergeTarget

protected long sliceStateMergeTarget(long sliceToMerge)
                              throws Exception

从类复制的说明: AbstractWindowAggProcessor

Returns the slice state target to merge the given slice into when firing windows. For unshared windows, there should no merging happens, so the merge target should be just the given sliceToMerge. For shared windows, the merge target should be the shared slice state.

指定者:

sliceStateMergeTarget 在类中 AbstractWindowAggProcessor

抛出:

Exception

另请参阅:

SliceSharedAssigner.mergeSlices(long, SliceSharedAssigner.MergeCallback)