WSO2 ESB, Using Aggregate mediator without send/call in iterate mediator

Question

In WSO2 ESB, can i use aggregate mediator to aggregate messages split by iterate mediator(which doesn't use Send or Call mediators to send the message to external endpoint) ?
I have tried this but aggregate mediator is not picking up the split messages..
Any help is deeply appreciated .

Answer 1

I've had to do the same thing and can tell that it works if you define a fake response :

iterate -> sequence

• apply any needed transformations to your message
• define it as a response message (set property RESPONSE to true)
• call a sequence containing aggregate mediator

aggregate

• completeCondition : set min and max messageCount to -1
• onComplete : you will receive all your fragments as soon as iterate will have process all concerned nodes

Answer 2

If you are only trying to transform a message iteratively, then you can use the ForEach mediator without the need for Iterate and Aggregate mediators. This is supported since ESB 4.9.0