Class ItemWriterAdapter<T>

java.lang.Object

org.springframework.batch.infrastructure.item.adapter.AbstractMethodInvokingDelegator<T>

org.springframework.batch.infrastructure.item.adapter.ItemWriterAdapter<T>

All Implemented Interfaces:

ItemWriter<T>, org.springframework.beans.factory.InitializingBean

public class ItemWriterAdapter<T>
extends AbstractMethodInvokingDelegator<T>
implements ItemWriter<T>

Delegates item processing to a custom method - passes the item as an argument for the delegate method.

This adapter is thread-safe as long as the delegate ItemWriter is thread-safe.

Author:

Robert Kasanicky, Mahmoud Ben Hassine

See Also:

• PropertyExtractingDelegatingItemWriter

Nested Class Summary

Nested classes/interfaces inherited from class AbstractMethodInvokingDelegator

AbstractMethodInvokingDelegator.InvocationTargetThrowableWrapper

Constructor Summary

Constructors

Constructor	Description
ItemWriterAdapter()

Method Summary

Modifier and Type	Method	Description
void	write(Chunk<? extends T> items)	Process the supplied data element.

Methods inherited from class AbstractMethodInvokingDelegator

afterPropertiesSet, getArguments, getTargetMethod, getTargetObject, invokeDelegateMethod, invokeDelegateMethodWithArgument, invokeDelegateMethodWithArguments, setArguments, setTargetMethod, setTargetObject

Methods inherited from class Object

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

Constructor Details

ItemWriterAdapter

public ItemWriterAdapter()

Method Details

write

public void write(Chunk<? extends T> items)
           throws Exception

Description copied from interface: ItemWriter

Process the supplied data element. Will not be called with any null items in normal operation but might be called with an empty chunk, for example when all items have been filtered by an ItemProcessor or skipped by the fault-tolerant step processing. Implementations are expected to handle empty chunks gracefully.

Specified by:

write in interface ItemWriter<T>

Parameters:

items - of items to be written. Never null but may be empty.

Throws:

Exception - if there are errors. The framework will catch the exception and convert or rethrow it as appropriate.