Class MessageChannelItemWriter<T>

java.lang.Object

org.springframework.batch.integration.support.MessageChannelItemWriter<T>

Type Parameters:

T - the type of items to be written

All Implemented Interfaces:

org.springframework.batch.infrastructure.item.ItemWriter<T>

public class MessageChannelItemWriter<T>
extends Object
implements org.springframework.batch.infrastructure.item.ItemWriter<T>

An ItemWriter implementation that sends items as messages to a message channel using a MessagingTemplate. This item writer enables SEDA (Staged Event-Driven Architecture) patterns in Spring Batch jobs by decoupling item production from item consumption through messaging.

Since:

6.0.0

Author:

Mahmoud Ben Hassine

Constructor Summary

Constructors

Constructor	Description
MessageChannelItemWriter(org.springframework.integration.core.MessagingTemplate messagingGateway)	Create a new MessageChannelItemWriter instance.
MessageChannelItemWriter(org.springframework.integration.core.MessagingTemplate messagingTemplate, org.springframework.messaging.MessageChannel messageChannel)	Create a new MessageChannelItemWriter instance.

Method Summary

Modifier and Type	Method	Description
void	setMessageChannel(org.springframework.messaging.MessageChannel messageChannel)	Set the target message channel.
void	write(org.springframework.batch.infrastructure.item.Chunk<? extends T> items)

Methods inherited from class Object

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

Constructor Details

MessageChannelItemWriter

public MessageChannelItemWriter(org.springframework.integration.core.MessagingTemplate messagingGateway)

Create a new MessageChannelItemWriter instance. Messages will be sent to the default destination of the provided MessagingTemplate which must not be null.

Parameters:

messagingGateway - the messaging template to use for sending messages

MessageChannelItemWriter

public MessageChannelItemWriter(org.springframework.integration.core.MessagingTemplate messagingTemplate,
 org.springframework.messaging.MessageChannel messageChannel)

Create a new MessageChannelItemWriter instance. Messages will be sent to the provided message channel.

Parameters:

messagingTemplate - the messaging template to use for sending messages

messageChannel - the message channel to send messages to

Method Details

setMessageChannel

public void setMessageChannel(org.springframework.messaging.MessageChannel messageChannel)

Set the target message channel.

Parameters:

messageChannel - the message channel to send messages to

write

public void write(org.springframework.batch.infrastructure.item.Chunk<? extends T> items)
           throws Exception

Specified by:

write in interface org.springframework.batch.infrastructure.item.ItemWriter<T>

Throws:

Exception