I really think we would need to see some code to figure out what´s going on here
--Dalla http://date-time.appspot.com/ On 14 Juli, 14:36, mugathur <[email protected]> wrote: > I'm experiencing a strange set of behaviors and was wondering if > anyone had any ideas. I'm using the datastore to write out some user > data. When it's hosted on the actual app engine, everything works > just fine. However, when I run in hosted mode on my local machine, > the first time a query is made, it produces errors. The second time > is fine. So for every new query I make, if the inputs have been > queried before, it's fine, but if it's a new query, the first time, > it'll produce the following errors: > > Jul 14, 2009 1:30:43 PM > com.google.appengine.tools.development.ApiProxyLocalImpl log > SEVERE: [1247574643932000] javax.servlet.ServletContext log: Exception > while dispatching incoming RPC call > com.google.gwt.user.server.rpc.UnexpectedException: Service method > 'public abstract com.hashbangtv.client.UserData > com.hashbangtv.client.UserService.AddUser > (com.hashbangtv.client.UserData)' threw an unexpected exception: > java.lang.NullPointerException: Name is null > at com.google.gwt.user.server.rpc.RPC.encodeResponseForFailure > (RPC.java:360) > at com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse > (RPC.java:546) > at com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall > (RemoteServiceServlet.java:166) > at com.google.gwt.user.server.rpc.RemoteServiceServlet.doPost > (RemoteServiceServlet.java:86) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:713) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:806) > at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java: > 487) > at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter > (ServletHandler.java:1093) > at > com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter > (TransactionCleanupFilter.java:43) > at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter > (ServletHandler.java:1084) > at org.mortbay.jetty.servlet.ServletHandler.handle > (ServletHandler.java:360) > at org.mortbay.jetty.security.SecurityHandler.handle > (SecurityHandler.java:216) > at org.mortbay.jetty.servlet.SessionHandler.handle > (SessionHandler.java:181) > at org.mortbay.jetty.handler.ContextHandler.handle > (ContextHandler.java:712) > at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java: > 405) > at com.google.apphosting.utils.jetty.DevAppEngineWebAppContext.handle > (DevAppEngineWebAppContext.java:54) > at org.mortbay.jetty.handler.HandlerWrapper.handle > (HandlerWrapper.java:139) > at com.google.appengine.tools.development.JettyContainerService > $ApiProxyHandler.handle(JettyContainerService.java:306) > at org.mortbay.jetty.handler.HandlerWrapper.handle > (HandlerWrapper.java:139) > at org.mortbay.jetty.Server.handle(Server.java:313) > at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java: > 506) > at org.mortbay.jetty.HttpConnection$RequestHandler.content > (HttpConnection.java:844) > at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:644) > at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211) > at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:381) > at org.mortbay.io.nio.SelectChannelEndPoint.run > (SelectChannelEndPoint.java:396) > at org.mortbay.thread.BoundedThreadPool$PoolThread.run > (BoundedThreadPool.java:442) > Caused by: java.lang.NullPointerException: Name is null > at java.lang.Enum.valueOf(Unknown Source) > at com.google.appengine.api.datastore.dev.CompositeIndexManager > $IndexSource.valueOf(CompositeIndexManager.java:64) > at com.google.appengine.api.datastore.dev.CompositeIndexManager > $1.apply(CompositeIndexManager.java:154) > at com.google.appengine.api.datastore.dev.CompositeIndexManager > $1.apply(CompositeIndexManager.java:152) > at > com.google.appengine.api.datastore.dev.CompositeIndexManager.extractIndices > (CompositeIndexManager.java:459) > at > com.google.appengine.api.datastore.dev.CompositeIndexManager.updateIndexFil e > (CompositeIndexManager.java:389) > at > com.google.appengine.api.datastore.dev.CompositeIndexManager.manageIndexFil e > (CompositeIndexManager.java:375) > at > com.google.appengine.api.datastore.dev.CompositeIndexManager.processQuery > (CompositeIndexManager.java:205) > at com.google.appengine.api.datastore.dev.LocalDatastoreService$5.run > (LocalDatastoreService.java:687) > at java.security.AccessController.doPrivileged(Native Method) > at > com.google.appengine.api.datastore.dev.LocalDatastoreService.runQuery > (LocalDatastoreService.java:685) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) > at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) > at java.lang.reflect.Method.invoke(Unknown Source) > at > com.google.appengine.tools.development.ApiProxyLocalImpl.makeSyncCall > (ApiProxyLocalImpl.java:97) > at com.google.apphosting.api.ApiProxy.makeSyncCall(ApiProxy.java:72) > at com.google.appengine.api.datastore.DatastoreApiHelper.makeSyncCall > (DatastoreApiHelper.java:47) > at com.google.appengine.api.datastore.DatastoreServiceImpl > $PreparedQueryImpl.runQuery(DatastoreServiceImpl.java:310) > at com.google.appengine.api.datastore.DatastoreServiceImpl > $PreparedQueryImpl.access$100(DatastoreServiceImpl.java:240) > at com.google.appengine.api.datastore.DatastoreServiceImpl > $PreparedQueryImpl$1.iterator(DatastoreServiceImpl.java:269) > at > org.datanucleus.store.appengine.query.RuntimeExceptionWrappingIterable.iter > ator > (RuntimeExceptionWrappingIterable.java:42) > at org.datanucleus.store.appengine.query.StreamingQueryResult.<init> > (StreamingQueryResult.java:71) > at > org.datanucleus.store.appengine.query.DatastoreQuery.newStreamingQueryResul > tForEntities > (DatastoreQuery.java:268) > at > org.datanucleus.store.appengine.query.DatastoreQuery.fulfillEntityQuery > (DatastoreQuery.java:263) > at org.datanucleus.store.appengine.query.DatastoreQuery.performExecute > (DatastoreQuery.java:227) > at org.datanucleus.store.appengine.query.JDOQLQuery.performExecute > (JDOQLQuery.java:85) > at org.datanucleus.store.appengine.query.JDOQLQuery.performExecute > (JDOQLQuery.java:31) > at org.datanucleus.store.query.Query.executeQuery(Query.java:1466) > at org.datanucleus.store.query.Query.executeWithArray(Query.java: > 1340) > at org.datanucleus.jdo.JDOQuery.execute(JDOQuery.java:240) > at com.hashbangtv.server.UserServiceImpl.AddUser(UserServiceImpl.java: > 72) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) > at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) > at java.lang.reflect.Method.invoke(Unknown Source) > at com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse > (RPC.java:527) > ... 25 more > The code I'm running is pretty straight forward: > > PersistenceManager persistence_manager = > m_Factory.getPersistenceManager(); > try > { > Query q = persistence_manager.newQuery(UserData.class, > "m_DisplayName == user_name"); > q.declareParameters("String user_name"); > Object result = q.execute(user_data.GetDisplayName()); > } > finally > { > persistence_manager.close(); > } > > Does anyone have any insight on what's going on? It says there's a > null pointer exception very deep in code, but I don't think I have the > source for it. Thanks in advance. The two things that are throwing > me off are: > > 1. It only happens locally. > 2. It only happens the first time for a given set of inputs. > > -moo --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~----------~----~----~----~------~----~------~--~---
