org.apache.flink.table.runtime.operators.window.tvf.unslicing

类 UnsliceAssigners.WindowedUnsliceAssigner

java.lang.Object

org.apache.flink.table.runtime.operators.window.groupwindow.assigners.GroupWindowAssigner<W>

org.apache.flink.table.runtime.operators.window.groupwindow.assigners.MergingWindowAssigner<TimeWindow>

org.apache.flink.table.runtime.operators.window.tvf.unslicing.UnsliceAssigners.WindowedUnsliceAssigner

所有已实现的接口:

Serializable, InternalTimeWindowAssigner, WindowAssigner, UnsliceAssigner<TimeWindow>

封闭类:

UnsliceAssigners

public static class UnsliceAssigners.WindowedUnsliceAssigner
extends MergingWindowAssigner<TimeWindow>
implements UnsliceAssigner<TimeWindow>, InternalTimeWindowAssigner

The UnsliceAssigner for elements have been merged into unslicing windows and attached window start and end timestamps.

另请参阅:

序列化表格

构造器概要

构造器

构造器和说明
WindowedUnsliceAssigner(int windowStartIndex, int windowEndIndex, UnsliceAssigner<TimeWindow> innerAssigner)

方法概要

限定符和类型	方法和说明
Optional<TimeWindow>	assignActualWindow(org.apache.flink.table.data.RowData element, ClockService clock, MergingWindowProcessFunction<?,TimeWindow> windowFunction) Returns the Window that the given element should belong to be used to trigger on.
Optional<TimeWindow>	assignStateNamespace(org.apache.flink.table.data.RowData element, ClockService clock, MergingWindowProcessFunction<?,TimeWindow> windowFunction) Returns the Window that the given element should belong to be used as a namespace to restore the state.
Collection<TimeWindow>	assignWindows(org.apache.flink.table.data.RowData element, long timestamp) Given the timestamp and element, returns the set of windows into which it should be placed.
String	getDescription() Returns a description of this window assigner.
MergingWindowAssigner<TimeWindow>	getMergingWindowAssigner() Currently, unslice assigner has an inner MergingWindowAssigner to reuse the logic in GroupWindowAssigner to merge windows.
org.apache.flink.api.common.typeutils.TypeSerializer<TimeWindow>	getWindowSerializer(org.apache.flink.api.common.ExecutionConfig executionConfig) Returns a TypeSerializer for serializing windows that are assigned by this WindowAssigner.
boolean	isEventTime() Returns true if elements are assigned to windows based on event time, false otherwise.
void	mergeWindows(TimeWindow newWindow, NavigableSet<TimeWindow> sortedWindows, MergeCallback<TimeWindow,Collection<TimeWindow>> callback) Determines which windows (if any) should be merged.
String	toString()
InternalTimeWindowAssigner	withEventTime()
InternalTimeWindowAssigner	withProcessingTime()

从类继承的方法 org.apache.flink.table.runtime.operators.window.groupwindow.assigners.GroupWindowAssigner

open

从类继承的方法 java.lang.Object

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

构造器详细资料

WindowedUnsliceAssigner

public WindowedUnsliceAssigner(int windowStartIndex,
                               int windowEndIndex,
                               UnsliceAssigner<TimeWindow> innerAssigner)

方法详细资料

assignActualWindow

public Optional<TimeWindow> assignActualWindow(org.apache.flink.table.data.RowData element,
                                               ClockService clock,
                                               MergingWindowProcessFunction<?,TimeWindow> windowFunction)
                                        throws Exception

从接口复制的说明: UnsliceAssigner

Returns the Window that the given element should belong to be used to trigger on.

See more details in MergingWindowProcessFunction.assignActualWindows(org.apache.flink.table.data.RowData, long).

指定者:

assignActualWindow 在接口中 UnsliceAssigner<TimeWindow>

参数:

element - the element to which slice should belong to.

clock - the service to get current processing time.

返回:

if empty, that means the element is late.

抛出:

Exception

assignStateNamespace

public Optional<TimeWindow> assignStateNamespace(org.apache.flink.table.data.RowData element,
                                                 ClockService clock,
                                                 MergingWindowProcessFunction<?,TimeWindow> windowFunction)
                                          throws Exception

从接口复制的说明: UnsliceAssigner

Returns the Window that the given element should belong to be used as a namespace to restore the state.

See more details in MergingWindowProcessFunction.assignStateNamespace(org.apache.flink.table.data.RowData, long).

指定者:

assignStateNamespace 在接口中 UnsliceAssigner<TimeWindow>

参数:

element - the element to which slice should belong to.

clock - the service to get current processing time.

返回:

if empty, that means the element is late.

抛出:

Exception

getMergingWindowAssigner

public MergingWindowAssigner<TimeWindow> getMergingWindowAssigner()

从接口复制的说明: UnsliceAssigner

Currently, unslice assigner has an inner MergingWindowAssigner to reuse the logic in GroupWindowAssigner to merge windows.

指定者:

getMergingWindowAssigner 在接口中 UnsliceAssigner<TimeWindow>

isEventTime

public boolean isEventTime()

从类复制的说明: GroupWindowAssigner

Returns true if elements are assigned to windows based on event time, false otherwise.

指定者:

isEventTime 在接口中 WindowAssigner

指定者:

isEventTime 在类中 GroupWindowAssigner<TimeWindow>

assignWindows

public Collection<TimeWindow> assignWindows(org.apache.flink.table.data.RowData element,
                                            long timestamp)
                                     throws IOException

从类复制的说明: GroupWindowAssigner

Given the timestamp and element, returns the set of windows into which it should be placed.

指定者:

assignWindows 在类中 GroupWindowAssigner<TimeWindow>

参数:

element - The element to which windows should be assigned.

timestamp - The timestamp of the element when GroupWindowAssigner.isEventTime() returns true, or the current system time when GroupWindowAssigner.isEventTime() returns false. The timestamp value is mapping to UTC milliseconds for splitting windows simply.

抛出:

IOException

getWindowSerializer

public org.apache.flink.api.common.typeutils.TypeSerializer<TimeWindow> getWindowSerializer(org.apache.flink.api.common.ExecutionConfig executionConfig)

从类复制的说明: GroupWindowAssigner

Returns a TypeSerializer for serializing windows that are assigned by this WindowAssigner.

指定者:

getWindowSerializer 在类中 GroupWindowAssigner<TimeWindow>

toString

public String toString()

指定者:

toString 在类中 GroupWindowAssigner<TimeWindow>

getDescription

public String getDescription()

从接口复制的说明: WindowAssigner

Returns a description of this window assigner.

指定者:

getDescription 在接口中 WindowAssigner

withEventTime

public InternalTimeWindowAssigner withEventTime()

指定者:

withEventTime 在接口中 InternalTimeWindowAssigner

返回:

an InternalTimeWindowAssigner which in event time mode.

withProcessingTime

public InternalTimeWindowAssigner withProcessingTime()

指定者:

withProcessingTime 在接口中 InternalTimeWindowAssigner

返回:

an InternalTimeWindowAssigner which in processing time mode.

mergeWindows

public void mergeWindows(TimeWindow newWindow,
                         NavigableSet<TimeWindow> sortedWindows,
                         MergeCallback<TimeWindow,Collection<TimeWindow>> callback)

从类复制的说明: MergingWindowAssigner

Determines which windows (if any) should be merged.

指定者:

mergeWindows 在类中 MergingWindowAssigner<TimeWindow>

参数:

newWindow - The new window

sortedWindows - The sorted window candidates.

callback - A callback that can be invoked to signal which windows should be merged.