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 Details

    • StreamProjection

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

  • Method Details

    • 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:

    • 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:

    • 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:

    • 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:

    • 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:

    • 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:

    • 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:

    • 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:

    • 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:

    • 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:

    • 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:

    • 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:

    • 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:

    • 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:

    • 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:

    • 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:

    • 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:

    • 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:

    • 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:

    • 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:

    • 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:

    • 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:

    • 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:

    • 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:

    • 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:

    • extractFieldTypes

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