org.apache.batchee.extras.typed

Class TypedItemReader<R,C extends Serializable>

java.lang.Object

org.apache.batchee.extras.typed.TypedItemReader<R,C>

Type Parameters:

R - The type of the item returned in readItem().

C - The type of the Checkpoint. See doCheckpointInfo() and doRead()

All Implemented Interfaces:

javax.batch.api.chunk.ItemReader

Direct Known Subclasses:

NoStateTypedItemReader

public abstract class TypedItemReader<R,C extends Serializable>
extends Object
implements javax.batch.api.chunk.ItemReader

Typesafe abstraction of an ItemReader.

Constructor Summary

Constructors

Constructor and Description
TypedItemReader()

Method Summary

Modifier and Type	Method and Description
Serializable	checkpointInfo()
protected abstract C	doCheckpointInfo()
protected abstract void	doOpen(C checkpoint)
protected abstract R	doRead()
void	open(Serializable checkpoint)
Object	readItem()

Methods inherited from class java.lang.Object

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

Methods inherited from interface javax.batch.api.chunk.ItemReader

close

Constructor Detail

TypedItemReader

public TypedItemReader()

Method Detail

doOpen

protected abstract void doOpen(C checkpoint)

doRead

protected abstract R doRead()

doCheckpointInfo

protected abstract C doCheckpointInfo()

open

public void open(Serializable checkpoint)
          throws Exception

Specified by:

open in interface javax.batch.api.chunk.ItemReader

Throws:

Exception

readItem

public Object readItem()
                throws Exception

Specified by:

readItem in interface javax.batch.api.chunk.ItemReader

Throws:

Exception

checkpointInfo

public Serializable checkpointInfo()
                            throws Exception

Specified by:

checkpointInfo in interface javax.batch.api.chunk.ItemReader

Throws:

Exception