org.apache.flink.streaming.api.operators

Class StreamProject<IN,OUT extends org.apache.flink.api.java.tuple.Tuple>

java.lang.Object

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

org.apache.flink.streaming.api.operators.StreamProject<IN,OUT>

All Implemented Interfaces:

Serializable, OneInputStreamOperator<IN,OUT>, StreamOperator<OUT>

public class StreamProject<IN,OUT extends org.apache.flink.api.java.tuple.Tuple>
extends AbstractStreamOperator<OUT>
implements OneInputStreamOperator<IN,OUT>

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.flink.streaming.api.operators.StreamOperator

StreamOperator.ChainingStrategy

Field Summary

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

chainingStrategy, executionConfig, inputCopyDisabled, output, runtimeContext

Constructor Summary

Constructors

Constructor and Description
StreamProject(int[] fields, org.apache.flink.api.common.typeutils.TypeSerializer<OUT> outSerializer)

Method Summary

Modifier and Type	Method and Description
void	open(org.apache.flink.configuration.Configuration config) This method is called before any elements are processed.
void	processElement(IN element)

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

close, disableInputCopy, getChainingStrategy, isInputCopyingDisabled, setChainingStrategy, setup

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.StreamOperator

close, getChainingStrategy, isInputCopyingDisabled, setChainingStrategy, setup

Constructor Detail

StreamProject

public StreamProject(int[] fields,
                     org.apache.flink.api.common.typeutils.TypeSerializer<OUT> outSerializer)

Method Detail

processElement

public void processElement(IN element)
                    throws Exception

Specified by:

processElement in interface OneInputStreamOperator<IN,OUT extends org.apache.flink.api.java.tuple.Tuple>

Throws:

Exception

open

public void open(org.apache.flink.configuration.Configuration config)
          throws Exception

Description copied from interface: StreamOperator

This method is called before any elements are processed.

Specified by:

open in interface StreamOperator<OUT extends org.apache.flink.api.java.tuple.Tuple>

Overrides:

open in class AbstractStreamOperator<OUT extends org.apache.flink.api.java.tuple.Tuple>

Throws:

Exception