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>
,org.springframework.beans.factory.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
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Nested Class Summary
Nested classes/interfaces inherited from class org.springframework.batch.item.adapter.AbstractMethodInvokingDelegator
AbstractMethodInvokingDelegator.InvocationTargetThrowableWrapper
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Constructor Summary
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Method Summary
Methods inherited from class org.springframework.batch.item.adapter.AbstractMethodInvokingDelegator
afterPropertiesSet, getArguments, invokeDelegateMethod, invokeDelegateMethodWithArgument, invokeDelegateMethodWithArguments, setArguments, setTargetMethod, setTargetObject
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Constructor Details
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ItemReaderAdapter
public ItemReaderAdapter()
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Method Details
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read
Description copied from interface:ItemReader
Reads a piece of input data and advance to the next one. Implementations must returnnull
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 interfaceItemReader<T>
- Returns:
- return value of the target method.
- Throws:
ParseException
- if there is a problem parsing the current record (but the next one may still be valid)NonTransientResourceException
- if there is a fatal exception in the underlying resource. After throwing this exception implementations should endeavour to return null from subsequent calls to read.UnexpectedInputException
- if there is an uncategorised problem with the input data. Assume potentially transient, so subsequent calls to read might succeed.Exception
- if an there is a non-specific error.
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