org.apache.flink.table.runtime.operators.window.internal

类 MergingWindowProcessFunction<K,W extends Window>

java.lang.Object

org.apache.flink.table.runtime.operators.window.internal.InternalWindowProcessFunction<K,W>

org.apache.flink.table.runtime.operators.window.internal.MergingWindowProcessFunction<K,W>

类型参数:

W - The type of Window that assigner assigns.

所有已实现的接口:

Serializable

public class MergingWindowProcessFunction<K,W extends Window>
extends InternalWindowProcessFunction<K,W>

The implementation of InternalWindowProcessFunction for MergingWindowAssigner.

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.window.internal.InternalWindowProcessFunction

InternalWindowProcessFunction.Context<K,W extends Window>

字段概要

从类继承的字段 org.apache.flink.table.runtime.operators.window.internal.InternalWindowProcessFunction

allowedLateness, ctx, windowAggregator

构造器概要

构造器

构造器和说明
MergingWindowProcessFunction(MergingWindowAssigner<W> windowAssigner, NamespaceAggsHandleFunctionBase<W> windowAggregator, org.apache.flink.api.common.typeutils.TypeSerializer<W> windowSerializer, long allowedLateness)

方法概要

限定符和类型	方法和说明
Collection<W>	assignActualWindows(org.apache.flink.table.data.RowData inputRow, long timestamp) Assigns the input element into the actual windows which the Trigger should trigger on.
Collection<W>	assignStateNamespace(org.apache.flink.table.data.RowData inputRow, long timestamp) Assigns the input element into the state namespace which the input element should be accumulated/retracted into.
void	cleanWindowIfNeeded(W window, long currentTime) Cleans the given window if needed.
void	open(InternalWindowProcessFunction.Context<K,W> ctx) Initialization method for the function.
void	prepareAggregateAccumulatorForEmit(W window) Prepares the accumulator of the given window before emit the final result.

从类继承的方法 org.apache.flink.table.runtime.operators.window.internal.InternalWindowProcessFunction

close, isCleanupTime, isWindowLate

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

MergingWindowProcessFunction

public MergingWindowProcessFunction(MergingWindowAssigner<W> windowAssigner,
                                    NamespaceAggsHandleFunctionBase<W> windowAggregator,
                                    org.apache.flink.api.common.typeutils.TypeSerializer<W> windowSerializer,
                                    long allowedLateness)

方法详细资料

open

public void open(InternalWindowProcessFunction.Context<K,W> ctx)
          throws Exception

从类复制的说明: InternalWindowProcessFunction

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

覆盖:

open 在类中 InternalWindowProcessFunction<K,W extends Window>

抛出:

Exception

assignStateNamespace

public Collection<W> assignStateNamespace(org.apache.flink.table.data.RowData inputRow,
                                          long timestamp)
                                   throws Exception

从类复制的说明: InternalWindowProcessFunction

Assigns the input element into the state namespace which the input element should be accumulated/retracted into.

指定者:

assignStateNamespace 在类中 InternalWindowProcessFunction<K,W extends Window>

参数:

inputRow - the input element

timestamp - the timestamp of the element or the processing time (depends on the type of assigner)

返回:

the state namespace

抛出:

Exception

assignActualWindows

public Collection<W> assignActualWindows(org.apache.flink.table.data.RowData inputRow,
                                         long timestamp)
                                  throws Exception

从类复制的说明: InternalWindowProcessFunction

Assigns the input element into the actual windows which the Trigger should trigger on.

指定者:

assignActualWindows 在类中 InternalWindowProcessFunction<K,W extends Window>

参数:

inputRow - the input element

timestamp - the timestamp of the element or the processing time (depends on the type of assigner)

返回:

the actual windows

抛出:

Exception

prepareAggregateAccumulatorForEmit

public void prepareAggregateAccumulatorForEmit(W window)
                                        throws Exception

从类复制的说明: InternalWindowProcessFunction

Prepares the accumulator of the given window before emit the final result. The accumulator is stored in the state or will be created if there is no corresponding accumulator in state.

指定者:

prepareAggregateAccumulatorForEmit 在类中 InternalWindowProcessFunction<K,W extends Window>

参数:

window - the window

抛出:

Exception

cleanWindowIfNeeded

public void cleanWindowIfNeeded(W window,
                                long currentTime)
                         throws Exception

从类复制的说明: InternalWindowProcessFunction

Cleans the given window if needed.

指定者:

cleanWindowIfNeeded 在类中 InternalWindowProcessFunction<K,W extends Window>

参数:

window - the window to cleanup

currentTime - the current timestamp

抛出:

Exception