org.apache.flink.api.common.io

Class RichInputFormat<OT,T extends InputSplit>

java.lang.Object

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

All Implemented Interfaces:

Serializable, InputFormat<OT,T>, InputSplitSource<T>

Direct Known Subclasses:

FileInputFormat, GenericInputFormat, ReplicatingInputFormat

@Public
public abstract class RichInputFormat<OT,T extends InputSplit>
extends Object
implements InputFormat<OT,T>

An abstract stub implementation for Rich input formats. Rich formats have access to their runtime execution context via getRuntimeContext().

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
RichInputFormat()

Method Summary

Modifier and Type	Method and Description
void	closeInputFormat() Closes this InputFormat instance.
RuntimeContext	getRuntimeContext()
void	openInputFormat() Opens this InputFormat instance.
void	setRuntimeContext(RuntimeContext t)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.api.common.io.InputFormat

close, configure, createInputSplits, getInputSplitAssigner, getStatistics, nextRecord, open, reachedEnd

Constructor Detail

RichInputFormat

public RichInputFormat()

Method Detail

setRuntimeContext

public void setRuntimeContext(RuntimeContext t)

getRuntimeContext

public RuntimeContext getRuntimeContext()

openInputFormat

@PublicEvolving
public void openInputFormat()
                                     throws IOException

Opens this InputFormat instance. This method is called once per parallel instance. Resources should be allocated in this method. (e.g. database connections, cache, etc.)

Throws:

IOException - in case allocating the resources failed.

See Also:

InputFormat

closeInputFormat

@PublicEvolving
public void closeInputFormat()
                                      throws IOException

Closes this InputFormat instance. This method is called once per parallel instance. Resources allocated during openInputFormat() should be closed in this method.

Throws:

IOException - in case closing the resources failed

See Also:

InputFormat