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:

Serialized Form

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, getExecutionConfig, getInternalTimerService, getKeyedStateBackend, getKeyType, setCurrentKey, setup

Methods inherited from class java.lang.Object

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

Method Detail

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