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

接口 InternalWindowProcessFunction.Context<K,W extends Window>

类型参数:

W -

封闭类:

InternalWindowProcessFunction<K,W extends Window>

public static interface InternalWindowProcessFunction.Context<K,W extends Window>

Information available in an invocation of methods of InternalWindowProcessFunction.

方法概要

限定符和类型	方法和说明
void	clearPreviousState(W window) Clear previous agg state (used for retraction) of the given window.
void	clearTrigger(W window) Call Trigger.clear(Window)} on trigger.
void	clearWindowState(W window) Clear window state of the given window.
K	currentKey()
long	currentProcessingTime() Returns the current processing time.
long	currentWatermark() Returns the current event-time watermark.
void	deleteCleanupTimer(W window) Deletes the cleanup timer set for the contents of the provided window.
<S extends org.apache.flink.api.common.state.State> S	getPartitionedState(org.apache.flink.api.common.state.StateDescriptor<S,?> stateDescriptor) Creates a partitioned state handle, using the state backend configured for this task.
org.apache.flink.table.data.RowData	getWindowAccumulators(W window) Gets the accumulators of the given window.
void	onMerge(W newWindow, Collection<W> mergedWindows) Call Trigger.onMerge(Window, Trigger.OnMergeContext) on trigger.
void	setWindowAccumulators(W window, org.apache.flink.table.data.RowData acc) Sets the accumulators of the given window.

方法详细资料

getPartitionedState

<S extends org.apache.flink.api.common.state.State> S getPartitionedState(org.apache.flink.api.common.state.StateDescriptor<S,?> stateDescriptor)
                                                                   throws Exception

Creates a partitioned state handle, using the state backend configured for this task.

抛出:

IllegalStateException - Thrown, if the key/value state was already initialized.

Exception - Thrown, if the state backend cannot create the key/value state.

currentKey

K currentKey()

返回:

current key of current processed element.

currentProcessingTime

long currentProcessingTime()

Returns the current processing time.

currentWatermark

long currentWatermark()

Returns the current event-time watermark.

getWindowAccumulators

org.apache.flink.table.data.RowData getWindowAccumulators(W window)
                                                   throws Exception

Gets the accumulators of the given window.

抛出:

Exception

setWindowAccumulators

void setWindowAccumulators(W window,
                           org.apache.flink.table.data.RowData acc)
                    throws Exception

Sets the accumulators of the given window.

抛出:

Exception

clearWindowState

void clearWindowState(W window)
               throws Exception

Clear window state of the given window.

抛出:

Exception

clearPreviousState

void clearPreviousState(W window)
                 throws Exception

Clear previous agg state (used for retraction) of the given window.

抛出:

Exception

clearTrigger

void clearTrigger(W window)
           throws Exception

Call Trigger.clear(Window)} on trigger.

抛出:

Exception

onMerge

void onMerge(W newWindow,
             Collection<W> mergedWindows)
      throws Exception

Call Trigger.onMerge(Window, Trigger.OnMergeContext) on trigger.

抛出:

Exception

deleteCleanupTimer

void deleteCleanupTimer(W window)
                 throws Exception

Deletes the cleanup timer set for the contents of the provided window.

抛出:

Exception