Null Pointer (workspace) in GWT Debug

[raffan]

hi,

I configured the environment for the development by following the GWT documentation.

Unfortunately when I load the taxonomy returns null pointer on this object

Code: Select all

Main.get().workspaceUserProperties.getWorkspace().isStackTaxonomy()

I attach stacktrace

Code: Select all

00:03:32,500 [ERROR] 2013-04-05 10:55:18,093 [FATAL] Uncaught Exception: 
java.lang.NullPointerException: null 	at com.openkm.frontend.client.widget.startup.StartUp.nextStatus(StartUp.java:511) 	at com.openkm.frontend.client.widget.startup.StartUp.recoverFromError(StartUp.java:710) 	at com.openkm.frontend.client.Main.showError(Main.java:589) 	at com.openkm.frontend.client.util.WorkspaceUserProperties$1.onFailure(WorkspaceUserProperties.java:352) 	at com.google.gwt.user.client.rpc.impl.RequestCallbackAdapter.onResponseReceived(RequestCallbackAdapter.java:237) 	at com.google.gwt.http.client.Request.fireOnResponseReceived(Request.java:287) 	at com.google.gwt.http.client.RequestBuilder$1.onReadyStateChange(RequestBuilder.java:395) 	at sun.reflect.GeneratedMethodAccessor33.invoke(Unknown Source) 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 	at java.lang.reflect.Method.invoke(Unknown Source) 	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:337) 	at com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:218) 	at com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:136) 	at com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:561) 	at com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject(ModuleSpace.java:269) 	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:213) 	at sun.reflect.GeneratedMethodAccessor32.invoke(Unknown Source) 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 	at java.lang.reflect.Method.invoke(Unknown Source) 	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:292) 	at com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:546) 	at com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:363) 	at java.lang.Thread.run(Unknown Source)

Could someone please give me some suggestions

thank you very much

[jllort]

You have made some changes in original source code, isn't it?

Take in mind in loading process can not be made some calls to some objects still have not been created in that case seems Main.get().workspaceUserProperties.getWorkspace() is still not initializated and have null value. The loading logic is sequential to take control on initialization objects etc...

I suggest you debug some lines:

In line 507 of Statup.java-> Main.get().workspaceUserProperties.init(); is made the call to load workspace and when is loaded at line 344 of WorkspaceUserProperties.java is called Main.get().startUp.nextStatus(StartUp.STARTUP_GET_TAXONOMY_ROOT);

You have made any change or see the server log if there's some problem on RPC.