Package org.apache.flink.datastream.impl.extension.window.context

Class WindowTriggerContext<K,IN,W extends org.apache.flink.streaming.api.windowing.windows.Window>

java.lang.Object

org.apache.flink.datastream.impl.extension.window.context.WindowTriggerContext<K,IN,W>

Type Parameters:

K - Type of the key.

IN - Type of the input value.

W - Type of the window.

All Implemented Interfaces:

org.apache.flink.streaming.api.windowing.triggers.Trigger.OnMergeContext, org.apache.flink.streaming.api.windowing.triggers.Trigger.TriggerContext

public class WindowTriggerContext<K,IN,W extends org.apache.flink.streaming.api.windowing.windows.Window>
extends Object
implements org.apache.flink.streaming.api.windowing.triggers.Trigger.OnMergeContext

WindowTriggerContext is a utility for handling Trigger invocations. It can be reused by setting the key and window fields.

Constructor Summary

Constructors

Constructor	Description
WindowTriggerContext(K key, W window, org.apache.flink.streaming.api.operators.AbstractStreamOperator<?> operator, org.apache.flink.streaming.api.operators.InternalTimerService<W> internalTimerService, org.apache.flink.streaming.api.windowing.triggers.Trigger<? super IN,? super W> trigger, org.apache.flink.api.common.typeutils.TypeSerializer<W> windowSerializer)

Method Summary

Modifier and Type	Method	Description
void	clear()
void	deleteEventTimeTimer(long time)
void	deleteProcessingTimeTimer(long time)
long	getCurrentProcessingTime()
long	getCurrentWatermark()	Get current event time.
K	getKey()
org.apache.flink.metrics.MetricGroup	getMetricGroup()
<S extends org.apache.flink.api.common.state.State> S	getPartitionedState(org.apache.flink.api.common.state.StateDescriptor<S,?> stateDescriptor)
W	getWindow()
<S extends org.apache.flink.api.common.state.MergingState<?,?>> void	mergePartitionedState(org.apache.flink.api.common.state.StateDescriptor<S,?> stateDescriptor)
org.apache.flink.streaming.api.windowing.triggers.TriggerResult	onElement(org.apache.flink.streaming.runtime.streamrecord.StreamRecord<IN> element)
org.apache.flink.streaming.api.windowing.triggers.TriggerResult	onEventTime(long time)
void	onMerge(Collection<W> mergedWindows)
org.apache.flink.streaming.api.windowing.triggers.TriggerResult	onProcessingTime(long time)
void	registerEventTimeTimer(long time)
void	registerProcessingTimeTimer(long time)
void	setKey(K key)
void	setWindow(W window)
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

WindowTriggerContext

public WindowTriggerContext(K key,
                            W window,
                            org.apache.flink.streaming.api.operators.AbstractStreamOperator<?> operator,
                            org.apache.flink.streaming.api.operators.InternalTimerService<W> internalTimerService,
                            org.apache.flink.streaming.api.windowing.triggers.Trigger<? super IN,? super W> trigger,
                            org.apache.flink.api.common.typeutils.TypeSerializer<W> windowSerializer)

Method Detail

getMetricGroup

public org.apache.flink.metrics.MetricGroup getMetricGroup()

Specified by:

getMetricGroup in interface org.apache.flink.streaming.api.windowing.triggers.Trigger.TriggerContext

getCurrentWatermark

public long getCurrentWatermark()

Get current event time.

Specified by:

getCurrentWatermark in interface org.apache.flink.streaming.api.windowing.triggers.Trigger.TriggerContext

getPartitionedState

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

Specified by:

getPartitionedState in interface org.apache.flink.streaming.api.windowing.triggers.Trigger.TriggerContext

mergePartitionedState

public <S extends org.apache.flink.api.common.state.MergingState<?,?>> void mergePartitionedState(org.apache.flink.api.common.state.StateDescriptor<S,?> stateDescriptor)

Specified by:

mergePartitionedState in interface org.apache.flink.streaming.api.windowing.triggers.Trigger.OnMergeContext

getCurrentProcessingTime

public long getCurrentProcessingTime()

Specified by:

getCurrentProcessingTime in interface org.apache.flink.streaming.api.windowing.triggers.Trigger.TriggerContext

registerProcessingTimeTimer

public void registerProcessingTimeTimer(long time)

Specified by:

registerProcessingTimeTimer in interface org.apache.flink.streaming.api.windowing.triggers.Trigger.TriggerContext

registerEventTimeTimer

public void registerEventTimeTimer(long time)

Specified by:

registerEventTimeTimer in interface org.apache.flink.streaming.api.windowing.triggers.Trigger.TriggerContext

deleteProcessingTimeTimer

public void deleteProcessingTimeTimer(long time)

Specified by:

deleteProcessingTimeTimer in interface org.apache.flink.streaming.api.windowing.triggers.Trigger.TriggerContext

deleteEventTimeTimer

public void deleteEventTimeTimer(long time)

Specified by:

deleteEventTimeTimer in interface org.apache.flink.streaming.api.windowing.triggers.Trigger.TriggerContext

onElement

public org.apache.flink.streaming.api.windowing.triggers.TriggerResult onElement(org.apache.flink.streaming.runtime.streamrecord.StreamRecord<IN> element)
                                                                          throws Exception

Throws:

Exception

onProcessingTime

public org.apache.flink.streaming.api.windowing.triggers.TriggerResult onProcessingTime(long time)
                                                                                 throws Exception

Throws:

Exception

onEventTime

public org.apache.flink.streaming.api.windowing.triggers.TriggerResult onEventTime(long time)
                                                                            throws Exception

Throws:

Exception

onMerge

public void onMerge(Collection<W> mergedWindows)
             throws Exception

Throws:

Exception

clear

public void clear()
           throws Exception

Throws:

Exception

toString

public String toString()

Overrides:

toString in class Object

setKey

public void setKey(K key)

setWindow

public void setWindow(W window)

getKey

public K getKey()

getWindow

public W getWindow()