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

类 AbstractSliceWindowAggProcessor

java.lang.Object

org.apache.flink.table.runtime.operators.aggregate.window.processors.AbstractWindowAggProcessor<Long>

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

所有已实现的接口:

Serializable, WindowProcessor<Long>, SlicingWindowProcessor<Long>

直接已知子类:

SliceSharedWindowAggProcessor, SliceUnsharedWindowAggProcessor

public abstract class AbstractSliceWindowAggProcessor
extends AbstractWindowAggProcessor<Long>
implements SlicingWindowProcessor<Long>

A base implementation of SlicingWindowProcessor for window aggregate.

另请参阅:

序列化表格

嵌套类概要

从类继承的嵌套类/接口 org.apache.flink.table.runtime.operators.aggregate.window.processors.AbstractWindowAggProcessor

AbstractWindowAggProcessor.WindowIsEmptySupplier

从接口继承的嵌套类/接口 org.apache.flink.table.runtime.operators.window.tvf.common.WindowProcessor

WindowProcessor.Context<W>

字段概要

字段

限定符和类型	字段和说明
protected SliceAssigner	sliceAssigner
protected WindowBuffer	windowBuffer
protected WindowBuffer.Factory	windowBufferFactory
protected long	windowInterval

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

accSerializer, aggregator, clockService, ctx, currentProgress, emptySupplier, genAggsHandler, isEventTime, reuseOutput, shiftTimeZone, useDayLightSaving, windowState, windowTimerService

构造器概要

构造器

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

方法概要

限定符和类型	方法和说明
void	advanceProgress(long progress) Advances the progress time, the progress time is watermark if working in event-time mode, or current processing time if working in processing-time mode.
void	clearWindow(long timerTimestamp, Long windowEnd) Clear state and resources associated with the given window namespace.
void	close() The tear-down method of the function.
org.apache.flink.api.common.typeutils.TypeSerializer<Long>	createWindowSerializer() Returns the serializer of the window type.
protected WindowTimerService<Long>	getWindowTimerService()
void	open(WindowProcessor.Context<Long> context) Initialization method for the function.
void	prepareCheckpoint() Performs a preparation before checkpoint.
boolean	processElement(org.apache.flink.table.data.RowData key, org.apache.flink.table.data.RowData element) Process an element with associated key from the input stream.
protected abstract 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

collect, initializeWatermark

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.apache.flink.table.runtime.operators.window.tvf.common.WindowProcessor

fireWindow, initializeWatermark

字段详细资料

windowBufferFactory

protected final WindowBuffer.Factory windowBufferFactory

sliceAssigner

protected final SliceAssigner sliceAssigner

windowInterval

protected final long windowInterval

windowBuffer

protected transient WindowBuffer windowBuffer

构造器详细资料

AbstractSliceWindowAggProcessor

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

方法详细资料

open

public void open(WindowProcessor.Context<Long> context)
          throws Exception

从接口复制的说明: WindowProcessor

Initialization method for the function. It is called before the actual working methods.

指定者:

open 在接口中 WindowProcessor<Long>

覆盖:

open 在类中 AbstractWindowAggProcessor<Long>

抛出:

Exception

getWindowTimerService

protected WindowTimerService<Long> getWindowTimerService()

指定者:

getWindowTimerService 在类中 AbstractWindowAggProcessor<Long>

processElement

public boolean processElement(org.apache.flink.table.data.RowData key,
                              org.apache.flink.table.data.RowData element)
                       throws Exception

从接口复制的说明: WindowProcessor

Process an element with associated key from the input stream. Returns true if this element is dropped because of late arrival.

指定者:

processElement 在接口中 WindowProcessor<Long>

参数:

key - the key associated with the element

element - The element to process.

抛出:

Exception

sliceStateMergeTarget

protected abstract long sliceStateMergeTarget(long sliceToMerge)
                                       throws Exception

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.

抛出:

Exception

另请参阅:

SliceSharedAssigner.mergeSlices(long, MergeCallback)

advanceProgress

public void advanceProgress(long progress)
                     throws Exception

从接口复制的说明: WindowProcessor

Advances the progress time, the progress time is watermark if working in event-time mode, or current processing time if working in processing-time mode.

This will potentially flush buffered data into states, because the watermark advancement may be in a very small step, but we don't need to flush buffered data for every watermark advancement.

指定者:

advanceProgress 在接口中 WindowProcessor<Long>

参数:

progress - the current progress time

抛出:

Exception

prepareCheckpoint

public void prepareCheckpoint()
                       throws Exception

从接口复制的说明: WindowProcessor

Performs a preparation before checkpoint. This usually flushes buffered data into state.

指定者:

prepareCheckpoint 在接口中 WindowProcessor<Long>

抛出:

Exception

clearWindow

public void clearWindow(long timerTimestamp,
                        Long windowEnd)
                 throws Exception

从接口复制的说明: WindowProcessor

Clear state and resources associated with the given window namespace.

Note: the key context has been set.

指定者:

clearWindow 在接口中 WindowProcessor<Long>

参数:

timerTimestamp - the fired timestamp

windowEnd - the window to clear

抛出:

Exception

close

public void close()
           throws Exception

从接口复制的说明: WindowProcessor

The tear-down method of the function. It is called after the last call to the main working methods.

指定者:

close 在接口中 WindowProcessor<Long>

覆盖:

close 在类中 AbstractWindowAggProcessor<Long>

抛出:

Exception

createWindowSerializer

public org.apache.flink.api.common.typeutils.TypeSerializer<Long> createWindowSerializer()

从接口复制的说明: WindowProcessor

Returns the serializer of the window type.

指定者:

createWindowSerializer 在接口中 WindowProcessor<Long>