Package org.apache.flink.streaming.api.datastream

Class JoinedStreams.WithWindow<T1,T2,KEY,W extends Window>

java.lang.Object

org.apache.flink.streaming.api.datastream.JoinedStreams.WithWindow<T1,T2,KEY,W>

Type Parameters:

T1 - Type of the elements from the first input

T2 - Type of the elements from the second input

KEY - Type of the key. This must be the same for both inputs

W - Type of Window on which the join operation works.

Enclosing class:

JoinedStreams<T1,T2>

@Public
public static class JoinedStreams.WithWindow<T1,T2,KEY,W extends Window>
extends Object

A join operation that has KeySelectors defined for both inputs as well as a WindowAssigner.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	WithWindow(DataStream<T1> input1, DataStream<T2> input2, org.apache.flink.api.java.functions.KeySelector<T1,KEY> keySelector1, org.apache.flink.api.java.functions.KeySelector<T2,KEY> keySelector2, org.apache.flink.api.common.typeinfo.TypeInformation<KEY> keyType, WindowAssigner<? super org.apache.flink.util.TaggedUnion<T1,T2>,W> windowAssigner, Trigger<? super org.apache.flink.util.TaggedUnion<T1,T2>,? super W> trigger, Evictor<? super org.apache.flink.util.TaggedUnion<T1,T2>,? super W> evictor, Duration allowedLateness)

Method Summary

Modifier and Type	Method	Description
JoinedStreams.WithWindow<T1,T2,KEY,W>	allowedLateness(Duration newLateness)	Sets the time by which elements are allowed to be late.
<T> SingleOutputStreamOperator<T>	apply(org.apache.flink.api.common.functions.FlatJoinFunction<T1,T2,T> function)	Completes the join operation with the user function that is executed for each combination of elements with the same key in a window.
<T> SingleOutputStreamOperator<T>	apply(org.apache.flink.api.common.functions.FlatJoinFunction<T1,T2,T> function, org.apache.flink.api.common.typeinfo.TypeInformation<T> resultType)	Completes the join operation with the user function that is executed for each combination of elements with the same key in a window.
<T> SingleOutputStreamOperator<T>	apply(org.apache.flink.api.common.functions.JoinFunction<T1,T2,T> function)	Completes the join operation with the user function that is executed for each combination of elements with the same key in a window.
<T> SingleOutputStreamOperator<T>	apply(org.apache.flink.api.common.functions.JoinFunction<T1,T2,T> function, org.apache.flink.api.common.typeinfo.TypeInformation<T> resultType)	Completes the join operation with the user function that is executed for each combination of elements with the same key in a window.
JoinedStreams.WithWindow<T1,T2,KEY,W>	evictor(Evictor<? super org.apache.flink.util.TaggedUnion<T1,T2>,? super W> newEvictor)	Sets the Evictor that should be used to evict elements from a window before emission.
JoinedStreams.WithWindow<T1,T2,KEY,W>	trigger(Trigger<? super org.apache.flink.util.TaggedUnion<T1,T2>,? super W> newTrigger)	Sets the Trigger that should be used to trigger window emission.

Methods inherited from class java.lang.Object

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

Constructor Detail

WithWindow

@PublicEvolving
protected WithWindow(DataStream<T1> input1,
                     DataStream<T2> input2,
                     org.apache.flink.api.java.functions.KeySelector<T1,KEY> keySelector1,
                     org.apache.flink.api.java.functions.KeySelector<T2,KEY> keySelector2,
                     org.apache.flink.api.common.typeinfo.TypeInformation<KEY> keyType,
                     WindowAssigner<? super org.apache.flink.util.TaggedUnion<T1,T2>,W> windowAssigner,
                     Trigger<? super org.apache.flink.util.TaggedUnion<T1,T2>,? super W> trigger,
                     Evictor<? super org.apache.flink.util.TaggedUnion<T1,T2>,? super W> evictor,
                     @Nullable
                     Duration allowedLateness)

Method Detail

trigger

@PublicEvolving
public JoinedStreams.WithWindow<T1,T2,KEY,W> trigger(Trigger<? super org.apache.flink.util.TaggedUnion<T1,T2>,? super W> newTrigger)

Sets the Trigger that should be used to trigger window emission.

evictor

@PublicEvolving
public JoinedStreams.WithWindow<T1,T2,KEY,W> evictor(Evictor<? super org.apache.flink.util.TaggedUnion<T1,T2>,? super W> newEvictor)

Sets the Evictor that should be used to evict elements from a window before emission.

Note: When using an evictor window performance will degrade significantly, since pre-aggregation of window results cannot be used.

allowedLateness

@PublicEvolving
public JoinedStreams.WithWindow<T1,T2,KEY,W> allowedLateness(@Nullable
                                                                               Duration newLateness)

Sets the time by which elements are allowed to be late.

See Also:

WindowedStream.allowedLateness(Duration)

apply

public <T> SingleOutputStreamOperator<T> apply(org.apache.flink.api.common.functions.JoinFunction<T1,T2,T> function)

Completes the join operation with the user function that is executed for each combination of elements with the same key in a window.

apply

public <T> SingleOutputStreamOperator<T> apply(org.apache.flink.api.common.functions.FlatJoinFunction<T1,T2,T> function,
                                               org.apache.flink.api.common.typeinfo.TypeInformation<T> resultType)

Completes the join operation with the user function that is executed for each combination of elements with the same key in a window.

apply

public <T> SingleOutputStreamOperator<T> apply(org.apache.flink.api.common.functions.FlatJoinFunction<T1,T2,T> function)

Completes the join operation with the user function that is executed for each combination of elements with the same key in a window.

apply

public <T> SingleOutputStreamOperator<T> apply(org.apache.flink.api.common.functions.JoinFunction<T1,T2,T> function,
                                               org.apache.flink.api.common.typeinfo.TypeInformation<T> resultType)

Completes the join operation with the user function that is executed for each combination of elements with the same key in a window.