Class FlatMapStreamlet<R,T>
- java.lang.Object
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- org.apache.heron.streamlet.impl.StreamletBaseImpl<R>
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- org.apache.heron.streamlet.impl.StreamletImpl<T>
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- org.apache.heron.streamlet.impl.streamlets.FlatMapStreamlet<R,T>
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- All Implemented Interfaces:
Streamlet<T>
,StreamletBase<T>
public class FlatMapStreamlet<R,T> extends StreamletImpl<T>
FlatMapStreamlet represents a Streamlet that is made up of applying the user supplied flatMap function to each element of the parent streamlet and flattening out the result.
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Nested Class Summary
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Nested classes/interfaces inherited from class org.apache.heron.streamlet.impl.StreamletBaseImpl
StreamletBaseImpl.StreamletNamePrefix
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Field Summary
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Fields inherited from class org.apache.heron.streamlet.impl.StreamletBaseImpl
name, nPartitions
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Constructor Summary
Constructors Constructor Description FlatMapStreamlet(StreamletImpl<R> parent, SerializableFunction<? super R,? extends Iterable<? extends T>> flatMapFn)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description boolean
doBuild(TopologyBuilder bldr, Set<String> stageNames)
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Methods inherited from class org.apache.heron.streamlet.impl.StreamletImpl
applyOperator, applyOperator, clone, consume, countByKey, countByKeyAndWindow, filter, flatMap, getAvailableStreamIds, getStreamId, join, join, keyBy, keyBy, log, map, reduceByKey, reduceByKey, reduceByKeyAndWindow, reduceByKeyAndWindow, repartition, repartition, setName, setNumPartitions, split, toSink, transform, union, withStream
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Methods inherited from class org.apache.heron.streamlet.impl.StreamletBaseImpl
addChild, build, getChildren, getName, getNumPartitions, isBuilt, isFullyBuilt, setDefaultNameIfNone
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface org.apache.heron.streamlet.Streamlet
getName, getNumPartitions
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Constructor Detail
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FlatMapStreamlet
public FlatMapStreamlet(StreamletImpl<R> parent, SerializableFunction<? super R,? extends Iterable<? extends T>> flatMapFn)
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Method Detail
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doBuild
public boolean doBuild(TopologyBuilder bldr, Set<String> stageNames)
- Specified by:
doBuild
in classStreamletBaseImpl<T>
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