英文:
Correct way of using @Aggregator annotation with MethodInvokingMessageGroupProcessor
问题
在创建一个MethodInvokingMessageGroupProcessor(Object target)时，将目标对象target中所需的处理方法标记为@Aggregator是否正确？或者这会导致创建一个无用的AggregatingMessageHandler对象？
英文:
When creating a MethodInvokingMessageGroupProcessor(Object target) is it correct to annotate the desired processing method in target with @Aggregator or will this cause a useless creation of an AggregatingMessageHandler object?
答案1
得分: 1
这是正确的。这是MethodInvokingMessageGroupProcessor及其MessagingMethodInvokerHelper代理的逻辑：
public MethodInvokingMessageGroupProcessor(Object target) {
this.processor = new MethodInvokingMessageListProcessor<Object>(target, Aggregator.class);
}
虽然添加注释仍然是可选的，但为了帮助MessagingMethodInvokerHelper，最好添加一个。
不，如果您的@Aggregator没有inputChannel属性，它不会创建额外的AggregatingMessageHandler。
英文:
That's correct. That's the logic of that MethodInvokingMessageGroupProcessor and its MessagingMethodInvokerHelper delegate:
public MethodInvokingMessageGroupProcessor(Object target) {
this.processor = new MethodInvokingMessageListProcessor<Object>(target, Aggregator.class);
}
Although adding an annotation is still optional, it would be good to have to give that MessagingMethodInvokerHelper a little help.
No, it does not create an extra AggregatingMessageHandler, if your @Aggregator doesn't come with an inputChannel attribute.
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