Re: Use synchronous RPC on browser close ?

Hi Rocco,

thank you very much for your support. I am a colleague of Dominic and we managed to get our synchronous call.
In addition we added a service for our close tab event, so the manipulated call, proxy etc. is only used on the specified event.
That was necessary, because with the entry you provided for the *.gwt.xml, the manipulated call was applied in general.

Thanks and regards, Connor

Am Mittwoch, 17. Februar 2016 15:10:10 UTC+1 schrieb Rocco De Angelis:

Hi Dominic,

I'm sorry I forgot two classes and a little change that you have also to do!

In your *.gwt.xml you need to add following:

<generate-with class="com.aris.modeling.client.webapp.utils.rebind.rpc.GetRpcServiceGenerator">
    <when-type-assignable class="com.google.gwt.user.client.rpc.RemoteService"/>
</generate-with>

Attached also the two missing files.

Of course you have to change maybe the package names for the GetRpcServiceGenerator!

After this you can simply cast your RemoteService:

public static class Instance {
    private static GWTDesignerRPCServiceAsync ourSyncInstance;
    private static GWTDesignerRPCServiceAsync ourInstance;

    static {
        ourInstance = GWT.create(GWTDesignerRPCService.class);
        ourSyncInstance = GWT.create(GWTDesignerRPCService.class);
       ((GetRemoteServiceProxy)ourSyncInstance).setSync(true);
    }


    public static synchronized GWTDesignerRPCServiceAsync get() {
        return ourInstance;
    }

    public static synchronized GWTDesignerRPCServiceAsync getSync() {
        return ourSyncInstance;
    }
}

Am Mittwoch, 17. Februar 2016 14:48:50 UTC+1 schrieb Dominic Warzok:

Hey, thanks for the hint with baconApi but it's the same that the most of our users use IE. 

@Rocco: 

Can you post a little example how you use the synchronous callback. We tried to use the provided example. 

We try to cast our ascync service to GetRemoteServiceProxy but an error occured.

Error: 

SEVERE: Exception caught: com.SchumannGmbH.cam.web.client.CamService_Proxy cannot be cast to com.SchumannGmbH.cam.web.shared.rpc.GetRemoteServiceProxy
com.google.gwt.event.shared.UmbrellaException: Exception caught: com.SchumannGmbH.cam.web.client.CamService_Proxy cannot be cast to com.SchumannGmbH.cam.web.shared.rpc.GetRemoteServiceProxy
 at com.google.gwt.event.shared.HandlerManager.fireEvent(HandlerManager.java:129)
 at com.google.gwt.event.logical.shared.CloseEvent.fire(CloseEvent.java:56)
 at com.google.gwt.event.logical.shared.CloseEvent.fire(CloseEvent.java:41)
 at com.google.gwt.user.client.Window.onClosed(Window.java:839)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
 at java.lang.reflect.Method.invoke(Method.java:606)
 at com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)
 at com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)
 at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:172)
 at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessagesWhileWaitingForReturn(BrowserChannelServer.java:338)
 at com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:219)
 at com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:136)
 at com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:571)
 at com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject(ModuleSpace.java:279)
 at com.google.gwt.dev.shell.JavaScriptHost.invokeNativeObject(JavaScriptHost.java:91)
 at com.google.gwt.core.client.impl.Impl.apply(Impl.java)
 at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:242)
 at sun.reflect.GeneratedMethodAccessor58.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
 at java.lang.reflect.Method.invoke(Method.java:606)
 at com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)
 at com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)
 at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:172)
 at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessages(BrowserChannelServer.java:293)
 at com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:547)
 at com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:364)
 at java.lang.Thread.run

...

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