org.apache.flink.streaming.api.transformations

Class OneInputTransformation<IN,OUT>

java.lang.Object

org.apache.flink.streaming.api.transformations.StreamTransformation<OUT>

org.apache.flink.streaming.api.transformations.OneInputTransformation<IN,OUT>

Type Parameters:

IN - The type of the elements in the nput StreamTransformation

OUT - The type of the elements that result from this OneInputTransformation

@Internal
public class OneInputTransformation<IN,OUT>
extends StreamTransformation<OUT>

This Transformation represents the application of a OneInputStreamOperator to one input StreamTransformation.

Field Summary

Fields inherited from class org.apache.flink.streaming.api.transformations.StreamTransformation

bufferTimeout, id, idCounter, name, outputType, typeUsed

Constructor Summary

Constructors

Constructor and Description
OneInputTransformation(StreamTransformation<IN> input, String name, OneInputStreamOperator<IN,OUT> operator, org.apache.flink.api.common.typeinfo.TypeInformation<OUT> outputType, int parallelism) Creates a new OneInputTransformation from the given input and operator.

Method Summary

Modifier and Type	Method and Description
StreamTransformation<IN>	getInput() Returns the input StreamTransformation of this OneInputTransformation.
org.apache.flink.api.common.typeinfo.TypeInformation<IN>	getInputType() Returns the TypeInformation for the elements of the input.
OneInputStreamOperator<IN,OUT>	getOperator() Returns the TwoInputStreamOperator of this Transformation.
org.apache.flink.api.java.functions.KeySelector<IN,?>	getStateKeySelector() Returns the KeySelector that must be used for partitioning keyed state in this Operation.
org.apache.flink.api.common.typeinfo.TypeInformation<?>	getStateKeyType()
Collection<StreamTransformation<?>>	getTransitivePredecessors() Returns all transitive predecessor StreamTransformations of this StreamTransformation.
void	setChainingStrategy(ChainingStrategy strategy) Sets the chaining strategy of this StreamTransformation.
void	setStateKeySelector(org.apache.flink.api.java.functions.KeySelector<IN,?> stateKeySelector) Sets the KeySelector that must be used for partitioning keyed state of this operation.
void	setStateKeyType(org.apache.flink.api.common.typeinfo.TypeInformation<?> stateKeyType)

Methods inherited from class org.apache.flink.streaming.api.transformations.StreamTransformation

equals, getBufferTimeout, getId, getName, getNewNodeId, getOutputType, getParallelism, getSlotSharingGroup, getUid, hashCode, setBufferTimeout, setName, setOutputType, setParallelism, setSlotSharingGroup, setUid, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

OneInputTransformation

public OneInputTransformation(StreamTransformation<IN> input,
                              String name,
                              OneInputStreamOperator<IN,OUT> operator,
                              org.apache.flink.api.common.typeinfo.TypeInformation<OUT> outputType,
                              int parallelism)

Creates a new OneInputTransformation from the given input and operator.

Parameters:

input - The input StreamTransformation

name - The name of the StreamTransformation, this will be shown in Visualizations and the Log

operator - The TwoInputStreamOperator

outputType - The type of the elements produced by this OneInputTransformation

parallelism - The parallelism of this OneInputTransformation

Method Detail

getInput

public StreamTransformation<IN> getInput()

Returns the input StreamTransformation of this OneInputTransformation.

getInputType

public org.apache.flink.api.common.typeinfo.TypeInformation<IN> getInputType()

Returns the TypeInformation for the elements of the input.

getOperator

public OneInputStreamOperator<IN,OUT> getOperator()

Returns the TwoInputStreamOperator of this Transformation.

setStateKeySelector

public void setStateKeySelector(org.apache.flink.api.java.functions.KeySelector<IN,?> stateKeySelector)

Sets the KeySelector that must be used for partitioning keyed state of this operation.

Parameters:

stateKeySelector - The KeySelector to set

getStateKeySelector

public org.apache.flink.api.java.functions.KeySelector<IN,?> getStateKeySelector()

Returns the KeySelector that must be used for partitioning keyed state in this Operation.

See Also:

setStateKeySelector(org.apache.flink.api.java.functions.KeySelector<IN, ?>)

setStateKeyType

public void setStateKeyType(org.apache.flink.api.common.typeinfo.TypeInformation<?> stateKeyType)

getStateKeyType

public org.apache.flink.api.common.typeinfo.TypeInformation<?> getStateKeyType()

getTransitivePredecessors

public Collection<StreamTransformation<?>> getTransitivePredecessors()

Description copied from class: StreamTransformation

Returns all transitive predecessor StreamTransformations of this StreamTransformation. This is, for example, used when determining whether a feedback edge of an iteration actually has the iteration head as a predecessor.

Specified by:

getTransitivePredecessors in class StreamTransformation<OUT>

Returns:

The list of transitive predecessors.

setChainingStrategy

public final void setChainingStrategy(ChainingStrategy strategy)

Description copied from class: StreamTransformation

Sets the chaining strategy of this StreamTransformation.

Specified by:

setChainingStrategy in class StreamTransformation<OUT>