Question

I’m currently receiving an object on an integration channel that is something like:

public class LargeObject {
    private final String name;
    private final Integer id;
}

I want to take the name from it, wrap it in my own object and send it to another channel.

So generally I want to transform the message payload in a way similar to <integration:json-to-object-transformer>.

I could just do it with a <integration:service-activator>, but I was wandering if there is component specifically dedicated for the job ?

Thanks,

Answer 1

The proper component for this is a

<transformer/>

Assuming you have a constructor on your new object and a getName() method on your LargeObject, you can use a simple transformer with an expression…

<int:transformer expression="new foo.OtherObject(payload.name)"
    input-channel="foo" output-channel="bar" />

If you need more sophistication, simply make a POJO with this method…

public OtherObject transformIt(LargeObject input) {...}

and use…

<int:transformer ref="transformerPojo"
    input-channel="foo" output-channel="bar" />