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

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

All Implemented Interfaces:

ItemWriter<T>, InitializingBean

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

Delegates processing to a custom method - extracts property values from item object and uses them as arguments for the delegate method.

Author:

Robert Kasanicky

See Also:

ItemWriterAdapter

Nested Class Summary

Nested classes/interfaces inherited from class org.springframework.batch.item.adapter.AbstractMethodInvokingDelegator

AbstractMethodInvokingDelegator.InvocationTargetThrowableWrapper

Constructor Summary

PropertyExtractingDelegatingItemWriter()

Method Summary

void	afterPropertiesSet()
void	setFieldsUsedAsTargetMethodArguments(String[] fieldsUsedAsMethodArguments)
void	write(List<? extends T> items) Extracts values from item's fields named in fieldsUsedAsTargetMethodArguments and passes them as arguments to the delegate method.

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

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

PropertyExtractingDelegatingItemWriter

public PropertyExtractingDelegatingItemWriter()

Method Detail

write

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

Extracts values from item's fields named in fieldsUsedAsTargetMethodArguments and passes them as arguments to the delegate method.

Specified by:

write in interface ItemWriter<T>

Throws:

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

afterPropertiesSet

public void afterPropertiesSet()
                        throws Exception

Specified by:

afterPropertiesSet in interface InitializingBean

Overrides:

afterPropertiesSet in class AbstractMethodInvokingDelegator<T>

Throws:

Exception

setFieldsUsedAsTargetMethodArguments

public void setFieldsUsedAsTargetMethodArguments(String[] fieldsUsedAsMethodArguments)

Parameters:

fieldsUsedAsMethodArguments - the values of the these item's fields will be used as arguments for the delegate method. Nested property values are supported, e.g. address.city