JAX-RS & CXF map request to method based on XML?

It's impossible to do it this way. The reason is simple: CXF (as any other JAX-RS framework) routs the responses based on REST definitions and not based on object oriented principals. I mean that it selects the method based on URL, produced content type and consumed content type.(This is simplified description, see the JSR311 for exact algorithm).

But it has nothing to do with objects you expect. Objects are getting serialized only after the method is already selected. This is the reason you are getting the exception: createGeothing(@PathParam("{id}") Long id, PolygonGeothing geothing) is selected, so it tries to serialize the wrong class.

It's impossible to do it this way. The reason is simple: CXF (as any other JAX-RS framework) routs the responses based on REST definitions and not based on object oriented principals. I mean that it selects the method based on URL, produced content type and consumed content type.(This is simplified description, see the JSR311 for exact algorithm).

But it has nothing to do with objects you expect. Objects are getting serialized only after the method is already selected. This is the reason you are getting the exception: createGeothing(@PathParam("{id}") Long id, PolygonGeothing geothing) is selected, so it tries to serialize the wrong class.

You can do the following: Response createGeothing(@PathParam("{id}") Long id, Geothing geothing) and than cast and call the relevant method. Of course you need to make sure that Geothing is known to JAXB context.

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