org.springframework.batch.sample.common

Class InfiniteLoopReader

java.lang.Object

org.springframework.batch.sample.common.InfiniteLoopReader

All Implemented Interfaces:

ItemReader<java.lang.Object>

public class InfiniteLoopReader
extends java.lang.Object
implements ItemReader<java.lang.Object>

ItemReader implementation that will continually return a new object. It's generally useful for testing interruption.

Author:

Lucas Ward

Constructor Summary

Constructors

Constructor and Description
InfiniteLoopReader()

Method Summary

Modifier and Type	Method and Description
java.lang.Object	read() Reads a piece of input data and advance to the next one.

Methods inherited from class java.lang.Object

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

Constructor Detail

InfiniteLoopReader

public InfiniteLoopReader()

Method Detail

read

public java.lang.Object read()
                      throws java.lang.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<java.lang.Object>

Returns:

T the item to be processed or null if the data source is exhausted

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.

java.lang.Exception - if an there is a non-specific error.