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

类 UnsliceWindowAggProcessor

java.lang.Object

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

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

所有已实现的接口:

Serializable, WindowProcessor<TimeWindow>, UnslicingWindowProcessor<TimeWindow>

public class UnsliceWindowAggProcessor
extends AbstractWindowAggProcessor<TimeWindow>
implements UnslicingWindowProcessor<TimeWindow>

An window aggregate processor implementation which works for UnsliceAssigner, e.g. session windows.

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 MergingWindowProcessFunction<org.apache.flink.table.data.RowData,TimeWindow>	windowFunction

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
UnsliceWindowAggProcessor(GeneratedNamespaceAggsHandleFunction<TimeWindow> genAggsHandler, UnsliceAssigner<TimeWindow> unsliceAssigner, 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, TimeWindow window) Clear state and resources associated with the given window namespace.
org.apache.flink.api.common.typeutils.TypeSerializer<TimeWindow>	createWindowSerializer() Returns the serializer of the window type.
void	fireWindow(long timerTimestamp, TimeWindow window) Emit results of the given window.
protected WindowTimerService<TimeWindow>	getWindowTimerService()
void	open(WindowProcessor.Context<TimeWindow> 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.

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

close, 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

close, initializeWatermark

字段详细资料

windowFunction

protected transient MergingWindowProcessFunction<org.apache.flink.table.data.RowData,TimeWindow> windowFunction

构造器详细资料

UnsliceWindowAggProcessor

public UnsliceWindowAggProcessor(GeneratedNamespaceAggsHandleFunction<TimeWindow> genAggsHandler,
                                 UnsliceAssigner<TimeWindow> unsliceAssigner,
                                 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<TimeWindow> 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<TimeWindow>

覆盖:

open 在类中 AbstractWindowAggProcessor<TimeWindow>

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: 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<TimeWindow>

参数:

key - the key associated with the element

element - The element to process.

抛出:

Exception

fireWindow

public void fireWindow(long timerTimestamp,
                       TimeWindow window)
                throws Exception

从接口复制的说明: WindowProcessor

Emit results of the given window.

Note: the key context has been set.

指定者:

fireWindow 在接口中 WindowProcessor<TimeWindow>

参数:

timerTimestamp - the fired timestamp

window - the window to emit

抛出:

Exception

clearWindow

public void clearWindow(long timerTimestamp,
                        TimeWindow window)
                 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<TimeWindow>

参数:

timerTimestamp - the fired timestamp

window - the window to clear

抛出:

Exception

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<TimeWindow>

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<TimeWindow>

抛出:

Exception

createWindowSerializer

public org.apache.flink.api.common.typeutils.TypeSerializer<TimeWindow> 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<TimeWindow>

getWindowTimerService

protected WindowTimerService<TimeWindow> getWindowTimerService()

指定者:

getWindowTimerService 在类中 AbstractWindowAggProcessor<TimeWindow>