org.apache.flink.state.api.input

类 UnionStateInputFormat<OT>

java.lang.Object

org.apache.flink.api.common.io.RichInputFormat<OT,OperatorStateInputSplit>

org.apache.flink.state.api.input.UnionStateInputFormat<OT>

类型参数:

OT - The generic type of the state

所有已实现的接口:

Serializable, org.apache.flink.api.common.io.InputFormat<OT,OperatorStateInputSplit>, org.apache.flink.core.io.InputSplitSource<OperatorStateInputSplit>

@Internal
public class UnionStateInputFormat<OT>
extends org.apache.flink.api.common.io.RichInputFormat<OT,OperatorStateInputSplit>

Input format for reading operator union state.

另请参阅:

序列化表格

构造器概要

构造器

构造器和说明
UnionStateInputFormat(org.apache.flink.runtime.checkpoint.OperatorState operatorState, org.apache.flink.api.common.state.ListStateDescriptor<OT> descriptor) Creates an input format for reading union state from an operator in a savepoint.

方法概要

限定符和类型	方法和说明
void	close()
void	configure(org.apache.flink.configuration.Configuration parameters)
OperatorStateInputSplit[]	createInputSplits(int minNumSplits)
protected Iterable<OT>	getElements(org.apache.flink.runtime.state.OperatorStateBackend restoredBackend)
org.apache.flink.core.io.InputSplitAssigner	getInputSplitAssigner(OperatorStateInputSplit[] inputSplits)
org.apache.flink.api.common.io.statistics.BaseStatistics	getStatistics(org.apache.flink.api.common.io.statistics.BaseStatistics cachedStatistics)
OT	nextRecord(OT reuse)
void	open(OperatorStateInputSplit split)
boolean	reachedEnd()

从类继承的方法 org.apache.flink.api.common.io.RichInputFormat

closeInputFormat, getRuntimeContext, openInputFormat, setRuntimeContext

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

UnionStateInputFormat

public UnionStateInputFormat(org.apache.flink.runtime.checkpoint.OperatorState operatorState,
                             org.apache.flink.api.common.state.ListStateDescriptor<OT> descriptor)

Creates an input format for reading union state from an operator in a savepoint.

参数:

operatorState - The state to be queried.

descriptor - The descriptor for this state, providing a name and serializer.

方法详细资料

getElements

protected final Iterable<OT> getElements(org.apache.flink.runtime.state.OperatorStateBackend restoredBackend)
                                  throws Exception

抛出:

Exception

configure

public void configure(org.apache.flink.configuration.Configuration parameters)

getStatistics

public org.apache.flink.api.common.io.statistics.BaseStatistics getStatistics(org.apache.flink.api.common.io.statistics.BaseStatistics cachedStatistics)

getInputSplitAssigner

public org.apache.flink.core.io.InputSplitAssigner getInputSplitAssigner(OperatorStateInputSplit[] inputSplits)

createInputSplits

public OperatorStateInputSplit[] createInputSplits(int minNumSplits)

open

public void open(OperatorStateInputSplit split)
          throws IOException

抛出:

IOException

close

public void close()

reachedEnd

public boolean reachedEnd()

nextRecord

public OT nextRecord(OT reuse)