org.springframework.batch.item.adapter
Class ItemReaderAdapter<T>

java.lang.Object
  org.springframework.batch.item.adapter.AbstractMethodInvokingDelegator<T>
      org.springframework.batch.item.adapter.ItemReaderAdapter<T>

All Implemented Interfaces:

ItemReader<T>, InitializingBean

public class ItemReaderAdapter<T>
extends AbstractMethodInvokingDelegator<T>
implements ItemReader<T>

Invokes a custom method on a delegate plain old Java object which itself provides an item.

Author:

Robert Kasanicky

Constructor Summary

ItemReaderAdapter()

Method Summary

T	read() Reads a piece of input data and advance to the next one.

Methods inherited from class org.springframework.batch.item.adapter.AbstractMethodInvokingDelegator

afterPropertiesSet, invokeDelegateMethod, invokeDelegateMethodWithArgument, invokeDelegateMethodWithArguments, setArguments, setTargetMethod, setTargetObject

Methods inherited from class java.lang.Object

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

Constructor Detail

ItemReaderAdapter

public ItemReaderAdapter()

Method Detail

read

public T read()
       throws Exception

Description copied from interface: ItemReader

Reads a piece of input data and advance to the next one. Implementations must return null at the end of the input data set. In a transactional setting, caller might get the same item twice from successive calls (or otherwise), if the first call was in a transaction that rolled back.

Specified by:

read in interface ItemReader<T>

Returns:

return value of the target method.

Throws:

Exception - if an underlying resource is unavailable.