org.apache.beam.runners.twister2.translators.functions.internal

Class SystemReduceFnBuffering<K,T,W extends org.apache.beam.sdk.transforms.windowing.BoundedWindow>

java.lang.Object

org.apache.beam.runners.core.ReduceFn<K,InputT,OutputT,W>

org.apache.beam.runners.core.SystemReduceFn<K,T,java.lang.Iterable<T>,java.lang.Iterable<T>,W>

org.apache.beam.runners.twister2.translators.functions.internal.SystemReduceFnBuffering<K,T,W>

All Implemented Interfaces:

java.io.Serializable

public class SystemReduceFnBuffering<K,T,W extends org.apache.beam.sdk.transforms.windowing.BoundedWindow>
extends org.apache.beam.runners.core.SystemReduceFn<K,T,java.lang.Iterable<T>,java.lang.Iterable<T>,W>

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.beam.runners.core.ReduceFn

org.apache.beam.runners.core.ReduceFn.Context, org.apache.beam.runners.core.ReduceFn.OnMergeContext, org.apache.beam.runners.core.ReduceFn.OnTriggerContext, org.apache.beam.runners.core.ReduceFn.ProcessValueContext

Constructor Summary

Constructors

Constructor and Description
SystemReduceFnBuffering()
SystemReduceFnBuffering(org.apache.beam.sdk.coders.Coder<T> valueCoder)

Method Summary

Modifier and Type	Method and Description
void	clearState(org.apache.beam.runners.core.ReduceFn.Context c)
org.apache.beam.sdk.state.ReadableState<java.lang.Boolean>	isEmpty(org.apache.beam.runners.core.StateAccessor<K> state)
void	onMerge(org.apache.beam.runners.core.ReduceFn.OnMergeContext context)
void	onTrigger(org.apache.beam.runners.core.ReduceFn.OnTriggerContext c)
void	prefetchOnMerge(org.apache.beam.runners.core.MergingStateAccessor<K,W> state)
void	prefetchOnTrigger(org.apache.beam.runners.core.StateAccessor<K> state)
void	processValue(org.apache.beam.runners.core.ReduceFn.ProcessValueContext c)
protected java.lang.Object	readResolve()

Methods inherited from class org.apache.beam.runners.core.SystemReduceFn

buffering, combining

Methods inherited from class java.lang.Object

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

Constructor Detail

SystemReduceFnBuffering

public SystemReduceFnBuffering()

SystemReduceFnBuffering

public SystemReduceFnBuffering(org.apache.beam.sdk.coders.Coder<T> valueCoder)

Method Detail

onMerge

public void onMerge(org.apache.beam.runners.core.ReduceFn.OnMergeContext context)
             throws java.lang.Exception

Specified by:

onMerge in class org.apache.beam.runners.core.ReduceFn<K,T,java.lang.Iterable<T>,W extends org.apache.beam.sdk.transforms.windowing.BoundedWindow>

Throws:

java.lang.Exception

prefetchOnMerge

public void prefetchOnMerge(org.apache.beam.runners.core.MergingStateAccessor<K,W> state)
                     throws java.lang.Exception

Overrides:

prefetchOnMerge in class org.apache.beam.runners.core.ReduceFn<K,T,java.lang.Iterable<T>,W extends org.apache.beam.sdk.transforms.windowing.BoundedWindow>

Throws:

java.lang.Exception

processValue

public void processValue(org.apache.beam.runners.core.ReduceFn.ProcessValueContext c)
                  throws java.lang.Exception

Overrides:

processValue in class org.apache.beam.runners.core.SystemReduceFn<K,T,java.lang.Iterable<T>,java.lang.Iterable<T>,W extends org.apache.beam.sdk.transforms.windowing.BoundedWindow>

Throws:

java.lang.Exception

prefetchOnTrigger

public void prefetchOnTrigger(org.apache.beam.runners.core.StateAccessor<K> state)

Overrides:

prefetchOnTrigger in class org.apache.beam.runners.core.SystemReduceFn<K,T,java.lang.Iterable<T>,java.lang.Iterable<T>,W extends org.apache.beam.sdk.transforms.windowing.BoundedWindow>

onTrigger

public void onTrigger(org.apache.beam.runners.core.ReduceFn.OnTriggerContext c)
               throws java.lang.Exception

Overrides:

onTrigger in class org.apache.beam.runners.core.SystemReduceFn<K,T,java.lang.Iterable<T>,java.lang.Iterable<T>,W extends org.apache.beam.sdk.transforms.windowing.BoundedWindow>

Throws:

java.lang.Exception

clearState

public void clearState(org.apache.beam.runners.core.ReduceFn.Context c)
                throws java.lang.Exception

Overrides:

clearState in class org.apache.beam.runners.core.SystemReduceFn<K,T,java.lang.Iterable<T>,java.lang.Iterable<T>,W extends org.apache.beam.sdk.transforms.windowing.BoundedWindow>

Throws:

java.lang.Exception

isEmpty

public org.apache.beam.sdk.state.ReadableState<java.lang.Boolean> isEmpty(org.apache.beam.runners.core.StateAccessor<K> state)

Overrides:

isEmpty in class org.apache.beam.runners.core.SystemReduceFn<K,T,java.lang.Iterable<T>,java.lang.Iterable<T>,W extends org.apache.beam.sdk.transforms.windowing.BoundedWindow>

readResolve

protected java.lang.Object readResolve()
                                throws java.io.ObjectStreamException

Throws:

java.io.ObjectStreamException