yes i do have have workaround for this, but was just wondering if i
can use any of GWT feature.
Also i read in GWT FAQ, GWT do not support Synchronous calls and in
future they are not planning to have it(they have some theory). So i
guess need to implement my own workaround.
http://code.google.com/support/bin/answer.py?answer=55195&topic=10210
But guys just a question of thought, Don't you think having a
synchronous call feature will be added advantage.
Lets say u build a application and u have something like if user
logged out of application because of idle session then when user try
to do anything on application. instead of forwarding him to some user
login page , we just popup a login/password panel thing. And usually
on click we will call the login on server and close the dialogue
box(againw e can keep it open and in onSuccess function we can close
it, but for me not a good idea)
And as the call is asynchrnous so once we call the Login on server,
user is allowed to do other click in application(before he actually
login to server) and he will again see that u r not logged in.
Its just a small example.
But i think having synchronous call will be good thing.
Thanks for reading
Ravi.
On Aug 26, 5:03 pm, "Pavel Byles" <[EMAIL PROTECTED]> wrote:
> can't you just do:
> doTaskCallBack {
> onResponse(...) {
> userService.doSynchronousTask(...);
> }
>
> }
>
> Wouldn't that just give the synchronous effect?
>
> On Mon, Aug 25, 2008 at 6:24 AM, ping2ravi <[EMAIL PROTECTED]> wrote:
>
> > Hi All,
>
> > Does any one know how to make Synchronous calls using GWT.
> > Currently i am using GWT to build services, creating files like
>
> > com.app.client.MyService.java
> > //One function in this interface
> > doMyTask(ParamTpye myparams) throws ClientException;
>
> > com.app.client.MyServiceAsync.java
> > //One function in this interface
> > doMyTask(ParamTpye myparams,AsyncCallback callback) throws
> > ClientException;
>
> > com.app.server.MyServiceImpl.java
> > //One function in this class
> > doMyTask(ParamTpye myparams) throws ClientException;
>
> > now i create the service and call
> > MyServiceAsync userService = (MyServiceAsync)
> > GWT.create(MyService.class);
> > ServiceDefTarget endpoint = (ServiceDefTarget) userService;
> > String moduleRelativeURL = GWT.getModuleBaseURL() + "MyService";
> > endpoint.setServiceEntryPoint(moduleRelativeURL);
> > userService.doMyTask(MyParams,CallBackObject);
>
> > This piece of code is working fine as a ASYNCHRONOUS call.
>
> > Then i tried making is synchronous call using following code(i don't
> > know if its valid or not)
> > instead of using MyServiceAsync i am using MyService
>
> > MyService userService = (MyService) GWT.create(MyService.class);
> > ServiceDefTarget endpoint = (ServiceDefTarget) userService;
> > String moduleRelativeURL = GWT.getModuleBaseURL() + "MyService";
> > endpoint.setServiceEntryPoint(moduleRelativeURL);
> > userService.doMyTask(MyParams);
>
> > But call to doMyTask throw following exception.
> > java.lang.ClassCastException in MyService_Proxy.
>
> > So i guess this is not the way to make synchronous call in GWT
> > Can any one point me how to do that. Or its not possible at all in
> > GWT.
>
> > Thanks in advance.,
> > Ravi.
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