Staying DRY with JAX-RS

Here is a workaround I’m using:

Define a constructor for the BaseService with ‘id’ and ‘xyz’ as params:

// BaseService.java
public abstract class BaseService
{
    // JAX-RS injected fields
    protected final String id;
    protected final String xyz;

    public BaseService (String id, String xyz) {
        this.id = id;
        this.xyz = xyz;
    }
}

Repeat the constructor on all subclasses with the injects:

// FooService.java
@Path("/{id}/foo")
public class FooService extends BaseService
{
    public FooService (@PathParam("id") String id, @QueryParam("xyz") String xyz) {
        super(id, xyz);
    }

    @GET @Path("bar")
    public Response getBar() { /* snip */ }

    @GET @Path("baz")
    public Response getBaz() { /* snip */ }
}