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

类 StateReaderOperator<F extends org.apache.flink.api.common.functions.Function,KEY,N,OUT>

java.lang.Object

org.apache.flink.state.api.input.operator.StateReaderOperator<F,KEY,N,OUT>

类型参数:

F - The type of the user function.

KEY - The key type.

N - The namespace type.

OUT - The output type.

所有已实现的接口:

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

直接已知子类:

KeyedStateReaderOperator

@Internal
public abstract class StateReaderOperator<F extends org.apache.flink.api.common.functions.Function,KEY,N,OUT>
extends Object
implements org.apache.flink.streaming.api.operators.KeyContext, Serializable

Base class for executing functions that read keyed state.

另请参阅:

序列化表格

字段概要

字段

限定符和类型	字段和说明
protected F	function
protected org.apache.flink.api.common.typeutils.TypeSerializer<N>	namespaceSerializer

构造器概要

构造器

限定符	构造器和说明
protected	StateReaderOperator(F function, org.apache.flink.api.common.typeinfo.TypeInformation<KEY> keyType, org.apache.flink.api.common.typeutils.TypeSerializer<N> namespaceSerializer)

方法概要

限定符和类型	方法和说明
void	close()
Object	getCurrentKey()
org.apache.flink.api.common.ExecutionConfig	getExecutionConfig()
protected org.apache.flink.streaming.api.operators.InternalTimerService<N>	getInternalTimerService(String name)
org.apache.flink.runtime.state.KeyedStateBackend<KEY>	getKeyedStateBackend()
abstract Iterator<org.apache.flink.api.java.tuple.Tuple2<KEY,N>>	getKeysAndNamespaces(SavepointRuntimeContext ctx)
org.apache.flink.api.common.typeinfo.TypeInformation<KEY>	getKeyType()
void	open()
abstract void	processElement(KEY key, N namespace, org.apache.flink.util.Collector<OUT> out)
void	setCurrentKey(Object key)
void	setup(org.apache.flink.api.common.ExecutionConfig executionConfig, org.apache.flink.runtime.state.KeyedStateBackend<KEY> keyKeyedStateBackend, org.apache.flink.streaming.api.operators.InternalTimeServiceManager<KEY> timerServiceManager, SavepointRuntimeContext ctx)

从类继承的方法 java.lang.Object

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

字段详细资料

function

protected final F extends org.apache.flink.api.common.functions.Function function

namespaceSerializer

protected final org.apache.flink.api.common.typeutils.TypeSerializer<N> namespaceSerializer

构造器详细资料

StateReaderOperator

protected StateReaderOperator(F function,
                              org.apache.flink.api.common.typeinfo.TypeInformation<KEY> keyType,
                              org.apache.flink.api.common.typeutils.TypeSerializer<N> namespaceSerializer)

方法详细资料

processElement

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

抛出:

Exception

getKeysAndNamespaces

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

抛出:

Exception

setup

public final void setup(org.apache.flink.api.common.ExecutionConfig executionConfig,
                        org.apache.flink.runtime.state.KeyedStateBackend<KEY> keyKeyedStateBackend,
                        org.apache.flink.streaming.api.operators.InternalTimeServiceManager<KEY> timerServiceManager,
                        SavepointRuntimeContext ctx)

getInternalTimerService

protected final org.apache.flink.streaming.api.operators.InternalTimerService<N> getInternalTimerService(String name)

open

public void open()
          throws Exception

抛出:

Exception

close

public void close()
           throws Exception

抛出:

Exception

setCurrentKey

public final void setCurrentKey(Object key)

指定者:

setCurrentKey 在接口中 org.apache.flink.streaming.api.operators.KeyContext

getCurrentKey

public final Object getCurrentKey()

指定者:

getCurrentKey 在接口中 org.apache.flink.streaming.api.operators.KeyContext

getKeyedStateBackend

public final org.apache.flink.runtime.state.KeyedStateBackend<KEY> getKeyedStateBackend()

getKeyType

public final org.apache.flink.api.common.typeinfo.TypeInformation<KEY> getKeyType()

getExecutionConfig

public final org.apache.flink.api.common.ExecutionConfig getExecutionConfig()