You read about this issue in these two posts:
http://groups.google.com/group/Google-Web-Toolkit-Contributors/browse_thread/thread/25d151960b48b5c4
http://groups.google.com/group/Google-Web-Toolkit/browse_thread/thread/85cfb087d061e3c6/d325d250c7c19564?lnk=gst&q=gregor+generic+RPC+#d325d250c7c19564
On Dec 8, 3:25 pm, Shawn Pearce <[EMAIL PROTECTED]> wrote:
> I don't think its possible The GWT compiler must know in advance the type
> of objects that can appear within the List "entities" so it can generate the
> serialization and deserialization JavaScript code. Likewise I doubt it can
> serialize a field of type "Class", as the browser doesn't really have the
> same sort of class representation as the server does.
>
> You probably will need to define a different method for each type of object
> the operation will be on, so its clear to the compiler what type T is, so it
> can generate the necessary JavaScript. This is actually something of a
> safety advantage; it allows you to define operations for only the things the
> browser should be allowed to perform. For example, in my current
> application there are some entities I do not want the browser to be able to
> read or to write, and some I want it to read, but not insert. By defining
> specific functions in the RPC interface for each operation that is permitted
> I can restrict it to a limited set.
>
> On Mon, Dec 8, 2008 at 07:15, chris_wesdorp <[EMAIL PROTECTED]> wrote:
>
> > Hi,
>
> > I tried but did not succeed so maybe someone can help. Using GWT RPC
> > for CRUD using serializable objects requires at least one or four
> > methods per entity. If one method is used I can create a wrapper
> > object like:
>
> > public OrderAction {
> > private String action; // get, create, update, delete
> > private List<Order> list;
>
> > // constructor, getters and setters
> > }
>
> > Or I can create four methods by defining a method for each of the CRUD
> > actions. However, as the application will grow and I want the keep the
> > RPC interface simple I am trying to do something like this.
>
> > public CrudAction<T> {
> > private String action; // get, create, update, delete
> > private List<T> entities;
> > private Class<T> type;
>
> > // constructor, getters and setters
> > }
>
> > and the RPC interface is defined as
> > public String doSomething(CrudAction<T> action);
>
> > but I the only thing I get is
> > [ERROR] Type 'my.package.gwt.serializable.GenericRequest' was not
> > serializable and has no concrete serializable subtypes.
>
> > Is this possible to serialize a generic class like this?
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Google Web Toolkit" group.
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to [EMAIL PROTECTED]
For more options, visit this group at
http://groups.google.com/group/Google-Web-Toolkit?hl=en
-~----------~----~----~----~------~----~------~--~---
