Package org.apache.flink.streaming.runtime.operators.windowing

Class WindowOperatorFactory<K,IN,ACC,OUT,W extends Window>

java.lang.Object

org.apache.flink.streaming.api.operators.AbstractStreamOperatorFactory<OUT>

org.apache.flink.streaming.runtime.operators.windowing.WindowOperatorFactory<K,IN,ACC,OUT,W>

All Implemented Interfaces:

Serializable, OneInputStreamOperatorFactory<IN,OUT>, StreamOperatorFactory<OUT>, ProcessingTimeServiceAware

Direct Known Subclasses:

EvictingWindowOperatorFactory

@Internal
public class WindowOperatorFactory<K,IN,ACC,OUT,W extends Window>
extends AbstractStreamOperatorFactory<OUT>
implements OneInputStreamOperatorFactory<IN,OUT>

StreamOperatorFactory for WindowOperator.

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected final long	allowedLateness
protected final org.apache.flink.api.java.functions.KeySelector<IN,K>	keySelector
protected final org.apache.flink.api.common.typeutils.TypeSerializer<K>	keySerializer
protected final org.apache.flink.util.OutputTag<IN>	lateDataOutputTag
protected final Trigger<? super IN,? super W>	trigger
protected final WindowAssigner<? super IN,W>	windowAssigner
protected final InternalWindowFunction<ACC,OUT,K,W>	windowFunction
protected final org.apache.flink.api.common.typeutils.TypeSerializer<W>	windowSerializer
protected final org.apache.flink.api.common.state.StateDescriptor<? extends org.apache.flink.api.common.state.AppendingState<IN,ACC>,?>	windowStateDescriptor

Fields inherited from class org.apache.flink.streaming.api.operators.AbstractStreamOperatorFactory

chainingStrategy, processingTimeService

Constructor Summary

Constructors

Constructor

Description

WindowOperatorFactory(WindowAssigner<? super IN,W> windowAssigner, org.apache.flink.api.common.typeutils.TypeSerializer<W> windowSerializer, org.apache.flink.api.java.functions.KeySelector<IN,K> keySelector, org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer, org.apache.flink.api.common.state.StateDescriptor<? extends org.apache.flink.api.common.state.AppendingState<IN,ACC>,?> windowStateDescriptor, InternalWindowFunction<ACC,OUT,K,W> windowFunction, Trigger<? super IN,? super W> trigger, long allowedLateness, org.apache.flink.util.OutputTag<IN> lateDataOutputTag)

Method Summary

Modifier and Type	Method	Description
<T extends StreamOperator<OUT>> T	createStreamOperator(StreamOperatorParameters<OUT> parameters)	Create the operator.
org.apache.flink.api.java.functions.KeySelector<IN,K>	getKeySelector()
org.apache.flink.api.common.state.StateDescriptor<? extends org.apache.flink.api.common.state.AppendingState<IN,ACC>,?>	getStateDescriptor()
Class<? extends StreamOperator>	getStreamOperatorClass(ClassLoader classLoader)	Returns the runtime class of the stream operator.
Trigger<? super IN,? super W>	getTrigger()
WindowAssigner<? super IN,W>	getWindowAssigner()

Methods inherited from class org.apache.flink.streaming.api.operators.AbstractStreamOperatorFactory

getChainingStrategy, getMailboxExecutor, setChainingStrategy, setMailboxExecutor, setProcessingTimeService

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.streaming.api.operators.StreamOperatorFactory

getChainingStrategy, getOperatorAttributes, isInputTypeConfigurable, isLegacySource, isOutputTypeConfigurable, isStreamSource, setChainingStrategy, setInputType, setOutputType

Field Details

windowAssigner

protected final WindowAssigner<? super IN,W extends Window> windowAssigner

keySelector

protected final org.apache.flink.api.java.functions.KeySelector<IN,K> keySelector

trigger

protected final Trigger<? super IN,? super W extends Window> trigger

windowStateDescriptor

protected final org.apache.flink.api.common.state.StateDescriptor<? extends org.apache.flink.api.common.state.AppendingState<IN,ACC>,?> windowStateDescriptor

windowFunction

protected final InternalWindowFunction<ACC,OUT,K,W extends Window> windowFunction

keySerializer

protected final org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer

windowSerializer

protected final org.apache.flink.api.common.typeutils.TypeSerializer<W extends Window> windowSerializer

allowedLateness

protected final long allowedLateness

lateDataOutputTag

protected final org.apache.flink.util.OutputTag<IN> lateDataOutputTag

Constructor Details

WindowOperatorFactory

public WindowOperatorFactory(WindowAssigner<? super IN,W> windowAssigner,
 org.apache.flink.api.common.typeutils.TypeSerializer<W> windowSerializer,
 org.apache.flink.api.java.functions.KeySelector<IN,K> keySelector,
 org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer,
 org.apache.flink.api.common.state.StateDescriptor<? extends org.apache.flink.api.common.state.AppendingState<IN,ACC>,?> windowStateDescriptor,
 InternalWindowFunction<ACC,OUT,K,W> windowFunction,
 Trigger<? super IN,? super W> trigger,
 long allowedLateness,
 org.apache.flink.util.OutputTag<IN> lateDataOutputTag)

Method Details

createStreamOperator

public <T extends StreamOperator<OUT>> T createStreamOperator(StreamOperatorParameters<OUT> parameters)

Description copied from interface: StreamOperatorFactory

Create the operator. Sets access to the context and the output.

Specified by:

createStreamOperator in interface StreamOperatorFactory<K>

getStreamOperatorClass

public Class<? extends StreamOperator> getStreamOperatorClass(ClassLoader classLoader)

Description copied from interface: StreamOperatorFactory

Returns the runtime class of the stream operator.

Specified by:

getStreamOperatorClass in interface StreamOperatorFactory<K>

getTrigger

@VisibleForTesting
public Trigger<? super IN,? super W> getTrigger()

getKeySelector

@VisibleForTesting
public org.apache.flink.api.java.functions.KeySelector<IN,K> getKeySelector()

getWindowAssigner

@VisibleForTesting
public WindowAssigner<? super IN,W> getWindowAssigner()

getStateDescriptor

@VisibleForTesting
public org.apache.flink.api.common.state.StateDescriptor<? extends org.apache.flink.api.common.state.AppendingState<IN,ACC>,?> getStateDescriptor()