Java EE (Java Enterprise Edition) General Discussion

Hi

I am trying to convert the result of a adf View Object to json format

@Path("/user")
public class UserResource {
    public UserResource() {
    }
    @GET
    @Produces(MediaType.APPLICATION_JSON)
    public Row[] getUsers() {
        Row[] rows = null;
        ADFContext oldContext = ADFContext.initADFContext(null, null, null, null);
        try {
            String amDef = "com.tarek.api.model.app.AppModule";
            String config = "AppModuleLocal";
            ApplicationModule am = Configuration.createRootApplicationModule(amDef, config);
            ViewObject vo = am.findViewObject("AllUsers");
            vo.executeQuery();
            rows = vo.getAllRowsInRange();
            Configuration.releaseRootApplicationModule(am, true);
        } finally {
            ADFContext.resetADFContext(oldContext);
        }
        return rows;
    }

But i get this error

MessageBodyWriter not found for media type=application/json, type=class [Loracle.jbo.Row;, genericType=class [Loracle.jbo.Row;.

I am using  Jdeveloper IDE 12.2

and integrated weblogic

Any suggestions