On Saturday, April 6, 2013 11:53:15 AM UTC+2, Aman Sharma wrote: > > I'm using JDO with RequestFactory and MVP pattern. Example to implement > service in firty way is very clear to me from > https://developers.google.com/web-toolkit/doc/latest/DevGuideRequestFactory#entity_service > > But how do you implement a service as instance methods in a service class? > I am not very clear with the definition and use of ServiceLocator , > Locator. When do you use them? > > Is a service class different from persistence capable entity?
There are 2 ways to have your RequestContext methods backed by instance methods: - a return-type of InstanceRequest<SomeProxy, Result> tells RF to call the method on the domain object backing the SomeProxy instance passed to using() - a locator in the @Service or @ServiceName annotation tells RF to instantiate the ServiceLocator class and then use it to get an instance of the service class. The Locator that you use in @ProxyFor / @ProxyForName is about moving the findXxx static method and the getId and getVersion instance methods out of your entity and in a Locator instance. The doc only shows 2 ways of using RF: - using the entity as both an entity and service (with static methods): this is the default when you don't provide locators (this is because the Spring Roo guys with whom RF was built tried to somehow mimic Ruby on Rails / ActiveRecord), - removing all static methods from the entity by using both a Locator and ServiceLocator but you can mix and match things as you like: you can use Locator without ServiceLocator, or ServiceLocator without Locator; when you don't use a ServiceLocator, your service class can be distinct from an entity (domain object). -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/google-web-toolkit?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
