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

类 AbstractWindowAggProcessor

java.lang.Object

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

所有已实现的接口:

Serializable, SlicingWindowProcessor<Long>

直接已知子类:

SliceSharedWindowAggProcessor, SliceUnsharedWindowAggProcessor

public abstract class AbstractWindowAggProcessor
extends Object
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

字段

限定符和类型	字段和说明
protected org.apache.flink.api.common.typeutils.TypeSerializer<org.apache.flink.table.data.RowData>	accSerializer
protected NamespaceAggsHandleFunction<Long>	aggregator
protected ClockService	clockService
protected SlicingWindowProcessor.Context<Long>	ctx
protected long	currentProgress
protected GeneratedNamespaceAggsHandleFunction<Long>	genAggsHandler
protected boolean	isEventTime
protected org.apache.flink.table.data.utils.JoinedRowData	reuseOutput
protected java.time.ZoneId	shiftTimeZone
protected SliceAssigner	sliceAssigner
protected boolean	useDayLightSaving The shift timezone is using DayLightSaving time or not.
protected WindowBuffer	windowBuffer
protected WindowBuffer.Factory	windowBufferFactory
protected long	windowInterval
protected WindowValueState<Long>	windowState state schema: [key, window_end, accumulator].
protected WindowTimerService<Long>	windowTimerService

构造器概要

构造器

构造器和说明
AbstractWindowAggProcessor(GeneratedNamespaceAggsHandleFunction<Long> genAggsHandler, WindowBuffer.Factory bufferFactory, SliceAssigner sliceAssigner, org.apache.flink.api.common.typeutils.TypeSerializer<org.apache.flink.table.data.RowData> accSerializer, java.time.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 windowEnd) Clear state and resources associated with the given window namespace.
void	close() The tear-down method of the function.
protected void	collect(org.apache.flink.table.data.RowData aggResult)
org.apache.flink.api.common.typeutils.TypeSerializer<Long>	createWindowSerializer() Returns the serializer of the window type.
void	open(SlicingWindowProcessor.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 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.slicing.SlicingWindowProcessor

fireWindow

字段详细资料

genAggsHandler

protected final GeneratedNamespaceAggsHandleFunction<Long> genAggsHandler

windowBufferFactory

protected final WindowBuffer.Factory windowBufferFactory

sliceAssigner

protected final SliceAssigner sliceAssigner

accSerializer

protected final org.apache.flink.api.common.typeutils.TypeSerializer<org.apache.flink.table.data.RowData> accSerializer

isEventTime

protected final boolean isEventTime

windowInterval

protected final long windowInterval

shiftTimeZone

protected final java.time.ZoneId shiftTimeZone

useDayLightSaving

protected final boolean useDayLightSaving

The shift timezone is using DayLightSaving time or not.

currentProgress

protected transient long currentProgress

ctx

protected transient SlicingWindowProcessor.Context<Long> ctx

clockService

protected transient ClockService clockService

windowTimerService

protected transient WindowTimerService<Long> windowTimerService

aggregator

protected transient NamespaceAggsHandleFunction<Long> aggregator

windowBuffer

protected transient WindowBuffer windowBuffer

windowState

protected transient WindowValueState<Long> windowState

state schema: [key, window_end, accumulator].

reuseOutput

protected transient org.apache.flink.table.data.utils.JoinedRowData reuseOutput

构造器详细资料

AbstractWindowAggProcessor

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

方法详细资料

open

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

从接口复制的说明: SlicingWindowProcessor

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

指定者:

open 在接口中 SlicingWindowProcessor<Long>

抛出:

Exception

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: SlicingWindowProcessor

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 SlicingWindowProcessor<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, SliceSharedAssigner.MergeCallback)

advanceProgress

public void advanceProgress(long progress)
                     throws Exception

从接口复制的说明: SlicingWindowProcessor

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 SlicingWindowProcessor<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: SlicingWindowProcessor

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

指定者:

prepareCheckpoint 在接口中 SlicingWindowProcessor<Long>

抛出:

Exception

clearWindow

public void clearWindow(Long windowEnd)
                 throws Exception

从接口复制的说明: SlicingWindowProcessor

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 SlicingWindowProcessor<Long>

参数:

windowEnd - the window to clear

抛出:

Exception

close

public void close()
           throws Exception

从接口复制的说明: SlicingWindowProcessor

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 SlicingWindowProcessor<Long>

抛出:

Exception

createWindowSerializer

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

从接口复制的说明: SlicingWindowProcessor

Returns the serializer of the window type.

指定者:

createWindowSerializer 在接口中 SlicingWindowProcessor<Long>

collect

protected void collect(org.apache.flink.table.data.RowData aggResult)