Package org.springframework.batch.item.amqp

Class AmqpItemReader<T>

java.lang.Object

org.springframework.batch.item.amqp.AmqpItemReader<T>

All Implemented Interfaces:

ItemReader<T>

public class AmqpItemReader<T>
extends Object
implements ItemReader<T>

AMQP ItemReader implementation using an AmqpTemplate to receive and/or convert messages.

This reader is thread-safe as long as the delegate AmqpTemplate implementation is thread-safe.

Author:

Chris Schaefer, Mahmoud Ben Hassine, Stefano Cordio

Constructor Summary

Constructors

Constructor	Description
AmqpItemReader(org.springframework.amqp.core.AmqpTemplate amqpTemplate)	Initialize the AmqpItemReader.

Method Summary

Modifier and Type	Method	Description
@Nullable T	read()	Reads a piece of input data and advance to the next one.
void	setItemType(Class<? extends T> itemType)	Establish the itemType for the reader.

Methods inherited from class java.lang.Object

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

Constructor Details

AmqpItemReader

public AmqpItemReader(org.springframework.amqp.core.AmqpTemplate amqpTemplate)

Initialize the AmqpItemReader.

Parameters:

amqpTemplate - the template to be used. Must not be null.

Method Details

read

public @Nullable T read()

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:

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

setItemType

public void setItemType(Class<? extends T> itemType)

Establish the itemType for the reader.

Parameters:

itemType - class type that will be returned by the reader.