Method to find broken class and/or instance that causes error in serialization

hi 

It is quite often that I manage to get something in my graph of objects that will break the serialization. The problem is that this is sometimes not detected in the build process but later when the actual gwt rpc is made. 

The feedback from the server gives me this trace then:

[ERROR] com.google.gwt.user.client.rpc.StatusCodeException: 500 The call failed on the server; see server log for details

[ERROR]         at com.google.gwt.user.client.rpc.impl.RequestCallbackAdapter.onResponseReceived(RequestCallbackAdapter.java:209)

[ERROR]         at com.google.gwt.http.client.Request.fireOnResponseReceived(Request.java:258)

[ERROR]         at com.google.gwt.http.client.RequestBuilder$1.onReadyStateChange(RequestBuilder.java:412)

[ERROR]         at sun.reflect.GeneratedMethodAccessor108.invoke(Unknown Source)

[ERROR]         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

[ERROR]         at java.lang.reflect.Method.invoke(Method.java:606)

[ERROR]         at com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)

[ERROR]         at com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)

[ERROR]         at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:172)

[ERROR]         at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessagesWhileWaitingForReturn(BrowserChannelServer.java:338)

[ERROR]         at com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:219)

[ERROR]         at com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:136)

[ERROR]         at com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:571)

[ERROR]         at com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject(ModuleSpace.java:279)

[ERROR]         at com.google.gwt.dev.shell.JavaScriptHost.invokeNativeObject(JavaScriptHost.java:91)

[ERROR]         at com.google.gwt.core.client.impl.Impl.apply(Impl.java)

[ERROR]         at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:242)

[ERROR]         at sun.reflect.GeneratedMethodAccessor107.invoke(Unknown Source)

[ERROR]         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

[ERROR]         at java.lang.reflect.Method.invoke(Method.java:606)

[ERROR]         at com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)

[ERROR]         at com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)

[ERROR]         at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:172)

[ERROR]         at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessages(BrowserChannelServer.java:293)

[ERROR]         at com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:547)

[ERROR]         at com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:364)

[ERROR]         at java.lang.Thread.run(Thread.java:744)

If the server logs are the text that is written inside the console or in the application window of development mode, then it gives no indication of what class or instance that caused the error. 

I have a lot of complex classes being sent from the server to the client. So I would like to get som technical help in finding what is wrong. Does anybody have a god strategy for finding these problems?

Kind regards

CL

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