Question

I have the following model

class MyClass {
    id
    someRandomString
}

I would like to return this POJO to the client as…

<Root>
    <random>if + randomstring</random>
</Root>

Basically I’m dealing with a very message oriented service so I need to wrap and transform the model to the outbound XML format… Same goes on the input side

I have this XML…

<Root>
    <Username>
    <Password>
    <Action> <-- Some action or service to perform
    <SomeModel1>
    <SomeModel2>
</Root>

So the root and username and password are constant elements while the SomeModel can change based on the “service”

Bassically i’m looking for a design-pattern where the XML doesn’t match the model and there needs to be a transformation to and from…

Or what if I did…

class MyClass {
    id
    someRandomString
    random

    @XMLTransient
    getId()


    @XMLTransient
    getSomeRandomString()


    getRandom() {
        return id + someRandomString
    }
}

So JAXB will only map getRandom…

Another idea I have is create a bunch of classes that will represent the final output and just set the values to thoses…

So

class MyResponse {
    randomString
    status
    someOtherFieldRequired in response
}    

and then I can do…

myResponse.setRandomString(myClass.getId() + myClass.getSomeRandomString());

Answer 1

You could use XmlAdapter in conjunction with XmlJavaTypeAdapter, but I think it might require you to encapsulate the id and someRandomString properties into a separate class. Spreading out an element value over two separate bean properties directly is not something I’d know how to do, if it is at all possible.