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

类 KeyedStateReaderOperator<KEY,OUT>

java.lang.Object

org.apache.flink.state.api.input.operator.StateReaderOperator<KeyedStateReaderFunction<KEY,OUT>,KEY,org.apache.flink.runtime.state.VoidNamespace,OUT>

org.apache.flink.state.api.input.operator.KeyedStateReaderOperator<KEY,OUT>

类型参数:

KEY - The key type read from the state backend.

OUT - The output type of the function.

所有已实现的接口:

Serializable, org.apache.flink.streaming.api.operators.KeyContext

@Internal
public class KeyedStateReaderOperator<KEY,OUT>
extends StateReaderOperator<KeyedStateReaderFunction<KEY,OUT>,KEY,org.apache.flink.runtime.state.VoidNamespace,OUT>

A StateReaderOperator for executing a KeyedStateReaderFunction.

另请参阅:

序列化表格

字段概要

从类继承的字段 org.apache.flink.state.api.input.operator.StateReaderOperator

function, namespaceSerializer

构造器概要

构造器

构造器和说明
KeyedStateReaderOperator(KeyedStateReaderFunction<KEY,OUT> function, org.apache.flink.api.common.typeinfo.TypeInformation<KEY> keyType)

方法概要

限定符和类型	方法和说明
Iterator<org.apache.flink.api.java.tuple.Tuple2<KEY,org.apache.flink.runtime.state.VoidNamespace>>	getKeysAndNamespaces(SavepointRuntimeContext ctx)
void	open()
void	processElement(KEY key, org.apache.flink.runtime.state.VoidNamespace namespace, org.apache.flink.util.Collector<OUT> out)

从类继承的方法 org.apache.flink.state.api.input.operator.StateReaderOperator

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

从类继承的方法 java.lang.Object

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

构造器详细资料

KeyedStateReaderOperator

public KeyedStateReaderOperator(KeyedStateReaderFunction<KEY,OUT> function,
                                org.apache.flink.api.common.typeinfo.TypeInformation<KEY> keyType)

方法详细资料

open

public void open()
          throws Exception

覆盖:

open 在类中 StateReaderOperator<KeyedStateReaderFunction<KEY,OUT>,KEY,org.apache.flink.runtime.state.VoidNamespace,OUT>

抛出:

Exception

processElement

public void processElement(KEY key,
                           org.apache.flink.runtime.state.VoidNamespace namespace,
                           org.apache.flink.util.Collector<OUT> out)
                    throws Exception

指定者:

processElement 在类中 StateReaderOperator<KeyedStateReaderFunction<KEY,OUT>,KEY,org.apache.flink.runtime.state.VoidNamespace,OUT>

抛出:

Exception

getKeysAndNamespaces

public Iterator<org.apache.flink.api.java.tuple.Tuple2<KEY,org.apache.flink.runtime.state.VoidNamespace>> getKeysAndNamespaces(SavepointRuntimeContext ctx)
                                                                                                                        throws Exception

指定者:

getKeysAndNamespaces 在类中 StateReaderOperator<KeyedStateReaderFunction<KEY,OUT>,KEY,org.apache.flink.runtime.state.VoidNamespace,OUT>

抛出:

Exception