Package org.apache.flink.state.api.input.operator

Class WindowReaderOperator<S extends org.apache.flink.api.common.state.State,KEY,IN,W extends org.apache.flink.streaming.api.windowing.windows.Window,OUT>

java.lang.Object
org.apache.flink.state.api.input.operator.StateReaderOperator<WindowReaderFunction<IN,OUT,KEY,W>,KEY,W,OUT>
org.apache.flink.state.api.input.operator.WindowReaderOperator<S,KEY,IN,W,OUT>
Type Parameters:
S - The state type.
KEY - The key type.
IN - The type read from state.
W - The window type.
OUT - The output type of the reader.
All Implemented Interfaces:
Serializable, AutoCloseable, org.apache.flink.streaming.api.operators.KeyContext
@Internal public class WindowReaderOperator<S extends org.apache.flink.api.common.state.State,KEY,IN,W extends org.apache.flink.streaming.api.windowing.windows.Window,OUT> extends StateReaderOperator<WindowReaderFunction<IN,OUT,KEY,W>,KEY,W,OUT>
A StateReaderOperator for reading WindowOperator state.
See Also:

  • Field Summary

    Fields inherited from class org.apache.flink.state.api.input.operator.StateReaderOperator

    function, namespaceSerializer

  • Method Summary

    Modifier and Type
    Method
    Description
    static <KEY, T, ACC, R, OUT, W extends org.apache.flink.streaming.api.windowing.windows.Window>
    WindowReaderOperator<?,KEY,R,W,OUT>
    aggregate(org.apache.flink.api.common.functions.AggregateFunction<T,ACC,R> function, WindowReaderFunction<R,OUT,KEY,W> readerFunction, org.apache.flink.api.common.typeinfo.TypeInformation<KEY> keyType, org.apache.flink.api.common.typeutils.TypeSerializer<W> windowSerializer, org.apache.flink.api.common.typeinfo.TypeInformation<ACC> accumulatorType)
     
    static <KEY, T, W extends org.apache.flink.streaming.api.windowing.windows.Window, OUT>
    WindowReaderOperator<?,KEY,org.apache.flink.streaming.runtime.streamrecord.StreamRecord<T>,W,OUT>
    evictingWindow(WindowReaderFunction<org.apache.flink.streaming.runtime.streamrecord.StreamRecord<T>,OUT,KEY,W> readerFunction, org.apache.flink.api.common.typeinfo.TypeInformation<KEY> keyType, org.apache.flink.api.common.typeutils.TypeSerializer<W> windowSerializer, org.apache.flink.api.common.typeinfo.TypeInformation<T> stateType, org.apache.flink.api.common.ExecutionConfig config)
     
    org.apache.flink.util.CloseableIterator<org.apache.flink.api.java.tuple.Tuple2<KEY,W>>
    getKeysAndNamespaces(SavepointRuntimeContext ctx)
     
    void
    open()
     
    static <KEY, T, W extends org.apache.flink.streaming.api.windowing.windows.Window, OUT>
    WindowReaderOperator<?,KEY,T,W,OUT>
    process(WindowReaderFunction<T,OUT,KEY,W> readerFunction, org.apache.flink.api.common.typeinfo.TypeInformation<KEY> keyType, org.apache.flink.api.common.typeutils.TypeSerializer<W> windowSerializer, org.apache.flink.api.common.typeinfo.TypeInformation<T> stateType)
     
    void
    processElement(KEY key, W namespace, org.apache.flink.util.Collector<OUT> out)
     
    static <KEY, T, W extends org.apache.flink.streaming.api.windowing.windows.Window, OUT>
    WindowReaderOperator<?,KEY,T,W,OUT>
    reduce(org.apache.flink.api.common.functions.ReduceFunction<T> function, WindowReaderFunction<T,OUT,KEY,W> reader, org.apache.flink.api.common.typeinfo.TypeInformation<KEY> keyType, org.apache.flink.api.common.typeutils.TypeSerializer<W> windowSerializer, org.apache.flink.api.common.typeinfo.TypeInformation<T> inputType)
     

    Methods inherited from class org.apache.flink.state.api.input.operator.StateReaderOperator

    close, getCurrentKey, getInternalTimerService, getKeyedStateBackend, getKeyType, getSerializerFactory, setCurrentKey, setup

    Methods inherited from class java.lang.Object

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

  • Method Details

    • reduce

      public static <KEY, T, W extends org.apache.flink.streaming.api.windowing.windows.Window, OUT> WindowReaderOperator<?,KEY,T,W,OUT> reduce(org.apache.flink.api.common.functions.ReduceFunction<T> function, WindowReaderFunction<T,OUT,KEY,W> reader, org.apache.flink.api.common.typeinfo.TypeInformation<KEY> keyType, org.apache.flink.api.common.typeutils.TypeSerializer<W> windowSerializer, org.apache.flink.api.common.typeinfo.TypeInformation<T> inputType)

    • aggregate

      public static <KEY, T, ACC, R, OUT, W extends org.apache.flink.streaming.api.windowing.windows.Window> WindowReaderOperator<?,KEY,R,W,OUT> aggregate(org.apache.flink.api.common.functions.AggregateFunction<T,ACC,R> function, WindowReaderFunction<R,OUT,KEY,W> readerFunction, org.apache.flink.api.common.typeinfo.TypeInformation<KEY> keyType, org.apache.flink.api.common.typeutils.TypeSerializer<W> windowSerializer, org.apache.flink.api.common.typeinfo.TypeInformation<ACC> accumulatorType)

    • process

      public static <KEY, T, W extends org.apache.flink.streaming.api.windowing.windows.Window, OUT> WindowReaderOperator<?,KEY,T,W,OUT> process(WindowReaderFunction<T,OUT,KEY,W> readerFunction, org.apache.flink.api.common.typeinfo.TypeInformation<KEY> keyType, org.apache.flink.api.common.typeutils.TypeSerializer<W> windowSerializer, org.apache.flink.api.common.typeinfo.TypeInformation<T> stateType)

    • evictingWindow

      public static <KEY, T, W extends org.apache.flink.streaming.api.windowing.windows.Window, OUT> WindowReaderOperator<?,KEY,org.apache.flink.streaming.runtime.streamrecord.StreamRecord<T>,W,OUT> evictingWindow(WindowReaderFunction<org.apache.flink.streaming.runtime.streamrecord.StreamRecord<T>,OUT,KEY,W> readerFunction, org.apache.flink.api.common.typeinfo.TypeInformation<KEY> keyType, org.apache.flink.api.common.typeutils.TypeSerializer<W> windowSerializer, org.apache.flink.api.common.typeinfo.TypeInformation<T> stateType, org.apache.flink.api.common.ExecutionConfig config)

    • open

      public void open() throws Exception
      Overrides:
      open in class StateReaderOperator<WindowReaderFunction<IN,OUT,KEY,W extends org.apache.flink.streaming.api.windowing.windows.Window>,KEY,W extends org.apache.flink.streaming.api.windowing.windows.Window,OUT>
      Throws:
      Exception

    • processElement

      public void processElement(KEY key, W namespace, org.apache.flink.util.Collector<OUT> out) throws Exception
      Specified by:
      processElement in class StateReaderOperator<WindowReaderFunction<IN,OUT,KEY,W extends org.apache.flink.streaming.api.windowing.windows.Window>,KEY,W extends org.apache.flink.streaming.api.windowing.windows.Window,OUT>
      Throws:
      Exception

    • getKeysAndNamespaces

      public org.apache.flink.util.CloseableIterator<org.apache.flink.api.java.tuple.Tuple2<KEY,W>> getKeysAndNamespaces(SavepointRuntimeContext ctx) throws Exception
      Specified by:
      getKeysAndNamespaces in class StateReaderOperator<WindowReaderFunction<IN,OUT,KEY,W extends org.apache.flink.streaming.api.windowing.windows.Window>,KEY,W extends org.apache.flink.streaming.api.windowing.windows.Window,OUT>
      Throws:
      Exception