How to inject a value from application.properties into @PayloadRoot namespace-value

Question

in my project it's necessary to inject a value from the application.properties file, profile-dependent, into the endpoint-class to the namespace-variable of the @PayloadRoot annotation.

The problem: the namespace-value must be a constant and in spring I can't inject a value into a final variable. I find an advice to inject in this way:

@PayloadRoot(namespace = "${my.namespace}", localPart = "getMyRequest")
@ResponsePayload
public JAXBElement<MyResult> myMethod(@RequestPayload JAXBElement<MyInput> request) {

but ... it doesn't work. Has anyone a working solution?

Thanks...

Answer 1

You could do one of the following:

1) Use reflection once you have the appropriate value (but you need to make sure that you set the value before the endpoint mapping occurs): example here

2) Extends the class PayloadRootAnnotationMethodEndpointMapping and in the method getLookupKeysForMethod, use a custom a method getQNameFromAnnotation where you will inject the correct value of the namespace.

private QName getQNameFromAnnotation(PayloadRoot payloadRoot) {
    return new QName(/*INJECT YOURNAMESPACE HERE*/, payloadRoot.localPart());
}