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

Class StreamProjection<IN>

java.lang.Object

org.apache.flink.streaming.api.datastream.StreamProjection<IN>

@PublicEvolving
public class StreamProjection<IN>
extends Object

The result of DataStream.project(int...). This can be used to add more fields to the projection.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	StreamProjection(DataStream<IN> dataStream, int[] fieldIndexes)

Method Summary

Modifier and Type	Method	Description
static org.apache.flink.api.common.typeinfo.TypeInformation<?>[]	extractFieldTypes(int[] fields, org.apache.flink.api.common.typeinfo.TypeInformation<?> inType)
<T0> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple1<T0>>	projectTuple1()	Projects a Tuple DataStream to the previously selected fields.
<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple10<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9>>	projectTuple10()	Projects a Tuple DataStream to the previously selected fields.
<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple11<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10>>	projectTuple11()	Projects a Tuple DataStream to the previously selected fields.
<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple12<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11>>	projectTuple12()	Projects a Tuple DataStream to the previously selected fields.
<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple13<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12>>	projectTuple13()	Projects a Tuple DataStream to the previously selected fields.
<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple14<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13>>	projectTuple14()	Projects a Tuple DataStream to the previously selected fields.
<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple15<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14>>	projectTuple15()	Projects a Tuple DataStream to the previously selected fields.
<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple16<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15>>	projectTuple16()	Projects a Tuple DataStream to the previously selected fields.
<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple17<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16>>	projectTuple17()	Projects a Tuple DataStream to the previously selected fields.
<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple18<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17>>	projectTuple18()	Projects a Tuple DataStream to the previously selected fields.
<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17,T18> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple19<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17,T18>>	projectTuple19()	Projects a Tuple DataStream to the previously selected fields.
<T0,T1> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple2<T0,T1>>	projectTuple2()	Projects a Tuple DataStream to the previously selected fields.
<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17,T18,T19> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple20<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17,T18,T19>>	projectTuple20()	Projects a Tuple DataStream to the previously selected fields.
<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17,T18,T19,T20> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple21<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17,T18,T19,T20>>	projectTuple21()	Projects a Tuple DataStream to the previously selected fields.
<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17,T18,T19,T20,T21> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple22<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17,T18,T19,T20,T21>>	projectTuple22()	Projects a Tuple DataStream to the previously selected fields.
<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17,T18,T19,T20,T21,T22> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple23<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17,T18,T19,T20,T21,T22>>	projectTuple23()	Projects a Tuple DataStream to the previously selected fields.
<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17,T18,T19,T20,T21,T22,T23> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple24<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17,T18,T19,T20,T21,T22,T23>>	projectTuple24()	Projects a Tuple DataStream to the previously selected fields.
<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17,T18,T19,T20,T21,T22,T23,T24> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple25<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17,T18,T19,T20,T21,T22,T23,T24>>	projectTuple25()	Projects a Tuple DataStream to the previously selected fields.
<T0,T1,T2> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple3<T0,T1,T2>>	projectTuple3()	Projects a Tuple DataStream to the previously selected fields.
<T0,T1,T2,T3> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple4<T0,T1,T2,T3>>	projectTuple4()	Projects a Tuple DataStream to the previously selected fields.
<T0,T1,T2,T3,T4> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple5<T0,T1,T2,T3,T4>>	projectTuple5()	Projects a Tuple DataStream to the previously selected fields.
<T0,T1,T2,T3,T4,T5> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple6<T0,T1,T2,T3,T4,T5>>	projectTuple6()	Projects a Tuple DataStream to the previously selected fields.
<T0,T1,T2,T3,T4,T5,T6> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple7<T0,T1,T2,T3,T4,T5,T6>>	projectTuple7()	Projects a Tuple DataStream to the previously selected fields.
<T0,T1,T2,T3,T4,T5,T6,T7> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple8<T0,T1,T2,T3,T4,T5,T6,T7>>	projectTuple8()	Projects a Tuple DataStream to the previously selected fields.
<T0,T1,T2,T3,T4,T5,T6,T7,T8> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple9<T0,T1,T2,T3,T4,T5,T6,T7,T8>>	projectTuple9()	Projects a Tuple DataStream to the previously selected fields.
<OUT extends org.apache.flink.api.java.tuple.Tuple> SingleOutputStreamOperator<OUT>	projectTupleX()	Chooses a projectTupleX according to the length of fieldIndexes.

Methods inherited from class java.lang.Object

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

Constructor Detail

StreamProjection

protected StreamProjection(DataStream<IN> dataStream,
                           int[] fieldIndexes)

Method Detail

projectTupleX

public <OUT extends org.apache.flink.api.java.tuple.Tuple> SingleOutputStreamOperator<OUT> projectTupleX()

Chooses a projectTupleX according to the length of fieldIndexes.

Returns:

The projected DataStream.

See Also:

org.apache.flink.api.java.operators.ProjectOperator.Projection

projectTuple1

public <T0> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple1<T0>> projectTuple1()

Projects a Tuple DataStream to the previously selected fields.

Returns:

The projected DataStream.

See Also:

Tuple, DataStream

projectTuple2

public <T0,T1> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple2<T0,T1>> projectTuple2()

Projects a Tuple DataStream to the previously selected fields.

Returns:

The projected DataStream.

See Also:

Tuple, DataStream

projectTuple3

public <T0,T1,T2> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple3<T0,T1,T2>> projectTuple3()

Projects a Tuple DataStream to the previously selected fields.

Returns:

The projected DataStream.

See Also:

Tuple, DataStream

projectTuple4

public <T0,T1,T2,T3> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple4<T0,T1,T2,T3>> projectTuple4()

Projects a Tuple DataStream to the previously selected fields.

Returns:

The projected DataStream.

See Also:

Tuple, DataStream

projectTuple5

public <T0,T1,T2,T3,T4> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple5<T0,T1,T2,T3,T4>> projectTuple5()

Projects a Tuple DataStream to the previously selected fields.

Returns:

The projected DataStream.

See Also:

Tuple, DataStream

projectTuple6

public <T0,T1,T2,T3,T4,T5> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple6<T0,T1,T2,T3,T4,T5>> projectTuple6()

Projects a Tuple DataStream to the previously selected fields.

Returns:

The projected DataStream.

See Also:

Tuple, DataStream

projectTuple7

public <T0,T1,T2,T3,T4,T5,T6> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple7<T0,T1,T2,T3,T4,T5,T6>> projectTuple7()

Projects a Tuple DataStream to the previously selected fields.

Returns:

The projected DataStream.

See Also:

Tuple, DataStream

projectTuple8

public <T0,T1,T2,T3,T4,T5,T6,T7> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple8<T0,T1,T2,T3,T4,T5,T6,T7>> projectTuple8()

Projects a Tuple DataStream to the previously selected fields.

Returns:

The projected DataStream.

See Also:

Tuple, DataStream

projectTuple9

public <T0,T1,T2,T3,T4,T5,T6,T7,T8> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple9<T0,T1,T2,T3,T4,T5,T6,T7,T8>> projectTuple9()

Projects a Tuple DataStream to the previously selected fields.

Returns:

The projected DataStream.

See Also:

Tuple, DataStream

projectTuple10

public <T0,T1,T2,T3,T4,T5,T6,T7,T8,T9> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple10<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9>> projectTuple10()

Projects a Tuple DataStream to the previously selected fields.

Returns:

The projected DataStream.

See Also:

Tuple, DataStream

projectTuple11

public <T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple11<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10>> projectTuple11()

Projects a Tuple DataStream to the previously selected fields.

Returns:

The projected DataStream.

See Also:

Tuple, DataStream

projectTuple12

public <T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple12<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11>> projectTuple12()

Projects a Tuple DataStream to the previously selected fields.

Returns:

The projected DataStream.

See Also:

Tuple, DataStream

projectTuple13

public <T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple13<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12>> projectTuple13()

Projects a Tuple DataStream to the previously selected fields.

Returns:

The projected DataStream.

See Also:

Tuple, DataStream

projectTuple14

public <T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple14<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13>> projectTuple14()

Projects a Tuple DataStream to the previously selected fields.

Returns:

The projected DataStream.

See Also:

Tuple, DataStream

projectTuple15

public <T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple15<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14>> projectTuple15()

Projects a Tuple DataStream to the previously selected fields.

Returns:

The projected DataStream.

See Also:

Tuple, DataStream

projectTuple16

public <T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple16<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15>> projectTuple16()

Projects a Tuple DataStream to the previously selected fields.

Returns:

The projected DataStream.

See Also:

Tuple, DataStream

projectTuple17

public <T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple17<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16>> projectTuple17()

Projects a Tuple DataStream to the previously selected fields.

Returns:

The projected DataStream.

See Also:

Tuple, DataStream

projectTuple18

public <T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple18<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17>> projectTuple18()

Projects a Tuple DataStream to the previously selected fields.

Returns:

The projected DataStream.

See Also:

Tuple, DataStream

projectTuple19

public <T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17,T18> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple19<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17,T18>> projectTuple19()

Projects a Tuple DataStream to the previously selected fields.

Returns:

The projected DataStream.

See Also:

Tuple, DataStream

projectTuple20

public <T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17,T18,T19> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple20<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17,T18,T19>> projectTuple20()

Projects a Tuple DataStream to the previously selected fields.

Returns:

The projected DataStream.

See Also:

Tuple, DataStream

projectTuple21

public <T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17,T18,T19,T20> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple21<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17,T18,T19,T20>> projectTuple21()

Projects a Tuple DataStream to the previously selected fields.

Returns:

The projected DataStream.

See Also:

Tuple, DataStream

projectTuple22

public <T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17,T18,T19,T20,T21> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple22<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17,T18,T19,T20,T21>> projectTuple22()

Projects a Tuple DataStream to the previously selected fields.

Returns:

The projected DataStream.

See Also:

Tuple, DataStream

projectTuple23

public <T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17,T18,T19,T20,T21,T22> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple23<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17,T18,T19,T20,T21,T22>> projectTuple23()

Projects a Tuple DataStream to the previously selected fields.

Returns:

The projected DataStream.

See Also:

Tuple, DataStream

projectTuple24

public <T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17,T18,T19,T20,T21,T22,T23> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple24<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17,T18,T19,T20,T21,T22,T23>> projectTuple24()

Projects a Tuple DataStream to the previously selected fields.

Returns:

The projected DataStream.

See Also:

Tuple, DataStream

projectTuple25

public <T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17,T18,T19,T20,T21,T22,T23,T24> SingleOutputStreamOperator<org.apache.flink.api.java.tuple.Tuple25<T0,T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12,T13,T14,T15,T16,T17,T18,T19,T20,T21,T22,T23,T24>> projectTuple25()

Projects a Tuple DataStream to the previously selected fields.

Returns:

The projected DataStream.

See Also:

Tuple, DataStream

extractFieldTypes

public static org.apache.flink.api.common.typeinfo.TypeInformation<?>[] extractFieldTypes(int[] fields,
                                                                                          org.apache.flink.api.common.typeinfo.TypeInformation<?> inType)