If you can reproduce this consistently it may be a compiler bug. It sounds as though the code is getting optimised out. GWT Team - is there a way to debug this situation with SOYC?
On Sep 10, 6:39 am, Jennifer Vendetti <[email protected]> wrote: > Thanks for your reply Joe. I found a solution, although I'm not sure > why the change I made fixes the problem. > > I read Robert Hanson's GWT In Action book and followed the > recommendation in Chapter 11 about using the Facade pattern to > simplify working with RPC. A pared down example from our code base > is: > > // ChAOService.java > @RemoteServiceRelativePath("chao") > public interface ChAOService extends RemoteService { > public List<NotesData> getNotes(String projectName, String > entityName, boolean topLevel); > > } > > // ChAOServiceAsync.java > public interface ChAOServiceAsync { > void getNotes(String projectName, String entityName, boolean > topLevel, AsyncCallback<List<NotesData>> cb); > > } > > // ChAOServiceManager.java > public class ChAOServiceManager { > > private static ChAOServiceAsync proxy; > private static ChAOServiceManager instance; > > private ChAOServiceManager() { > proxy = (ChAOServiceAsync) GWT.create(ChAOService.class); > } > > public static ChAOServiceManager getInstance() { > if (instance == null) { > instance = new ChAOServiceManager(); > } > return instance; > } > > public void getNotes(String projectName, String entityName, > boolean topLevel, AsyncCallback<List<NotesData>> cb) { > proxy.getNotes(projectName, entityName, topLevel, cb); > } > > } > > In my client code, if I separate my calls into two lines like this: > > ChAOServiceManager chaoServiceManager = ChAOServiceManager.getInstance > (); > chaoServiceManager.getNotes(...); > > ... my app works. But, if I use one line of Java code like this: > > ChAOServiceManager.getInstance().getNotes(...); > > ... my app fails with the exception I reported yesterday. > > Kind of confused by this, but glad my app is working now. > > Thanks, > Jennifer > > On Sep 9, 8:55 am, Joe Cole <[email protected]> wrote: > > > I remember something like this happening once on 1.5. > > From memory (I couldn't find it in our tracker) it was to do with not > > implementing RemoteService or something similar to that like not > > implementing Serializable. > > This may be completely wrong as it was about 1000 tickets ago :) - but > > is worth a shot. > > > On Sep 9, 12:14 pm, Jennifer Vendetti <[email protected]> > > wrote: > > > > Hi, > > > > I'm developing with GWT (version 1.7.0) and having trouble figuring > > > out the source of a runtime exception. My application compiles, runs, > > > and behaves as expected in hosted mode (on both Windows and Linux). > > > In browser mode (also on Windows and Linux), I get a runtime > > > exception: > > > > 'com_google_gwt_user_client_rpc_impl_RemoteServiceProxy_s...' is null > > > or not an object > > > > The generated javascript where the exception occurs is: > > > > function com_google_gwt_user_client_rpc_impl_RemoteServiceProxy_ > > > $createStreamWriter__Lcom_google_gwt_user_client_rpc_impl_RemoteServiceProx > > > y_2 > > > (this$static){ > > > var clientSerializationStreamWriter; > > > clientSerializationStreamWriter = > > > com_google_gwt_user_client_rpc_impl_ClientSerializationStreamWriter_ > > > $ClientSerializationStreamWriter__Lcom_google_gwt_user_client_rpc_impl_Clie > > > > > > ntSerializationStreamWriter_2Lcom_google_gwt_user_client_rpc_impl_Serialize > > > r_2Ljava_lang_String_2Ljava_lang_String_2 > > > (new > > > com_google_gwt_user_client_rpc_impl_ClientSerializationStreamWriter(), > > > this > > > $static.com_google_gwt_user_client_rpc_impl_RemoteServiceProxy_serializer, > > > this > > > $static.com_google_gwt_user_client_rpc_impl_RemoteServiceProxy_moduleBaseUR > > > L, > > > this > > > $static.com_google_gwt_user_client_rpc_impl_RemoteServiceProxy_serializatio > > > nPolicyName); > > > > clientSerializationStreamWriter.com_google_gwt_user_client_rpc_impl_Abstrac > > > tSerializationStreamWriter_objectCount > > > = 0; > > > java_util_AbstractHashMap_$clearImpl__Ljava_util_AbstractHashMap_2 > > > (clientSerializationStreamWriter.com_google_gwt_user_client_rpc_impl_Abstra > > > ctSerializationStreamWriter_objectMap); > > > > clientSerializationStreamWriter.com_google_gwt_user_client_rpc_impl_Abstrac > > > tSerializationStreamWriter_stringMap.clear__ > > > (); > > > java_util_ArrayList_$clear__Ljava_util_ArrayList_2 > > > (clientSerializationStreamWriter.com_google_gwt_user_client_rpc_impl_Abstra > > > ctSerializationStreamWriter_stringTable); > > > > clientSerializationStreamWriter.com_google_gwt_user_client_rpc_impl_ClientS > > > erializationStreamWriter_encodeBuffer > > > = java_lang_StringBuffer_$StringBuffer__Ljava_lang_StringBuffer_2(new > > > java_lang_StringBuffer()); > > > > com_google_gwt_user_client_rpc_impl_AbstractSerializationStreamWriter_ > > > $writeString__Lcom_google_gwt_user_client_rpc_impl_AbstractSerializationStr > > > eamWriter_2Ljava_lang_String_2 > > > (clientSerializationStreamWriter, > > > clientSerializationStreamWriter.com_google_gwt_user_client_rpc_impl_ClientS > > > erializationStreamWriter_moduleBaseURL); > > > > com_google_gwt_user_client_rpc_impl_AbstractSerializationStreamWriter_ > > > $writeString__Lcom_google_gwt_user_client_rpc_impl_AbstractSerializationStr > > > eamWriter_2Ljava_lang_String_2 > > > (clientSerializationStreamWriter, > > > clientSerializationStreamWriter.com_google_gwt_user_client_rpc_impl_ClientS > > > erializationStreamWriter_serializationPolicyStrongName); > > > return clientSerializationStreamWriter; > > > > } > > > > The browser's script debugger reports that "this$static" is null, but > > > I don't know what could be causing this. > > > > Can anyone give suggestions here? > > > > Thank you, > > > Jennifer --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. 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