You CANNOT connect to databases when using google app engine. GAE has several restrictions, you should go their documentation and post follow up questions on the GAE user forum.
--Sri On 1 June 2010 05:16, Emma Cole <emma.cole.positive.vo...@gmail.com> wrote: > Hi all, > > I have an application which uses hibernate that runs fine in hosted > mode, but no longer when deployed. > Here's the details: > > In hosted mode it connects to a database that resides on a remote > server. > Connection details set in hibernate.cfg.xml > > When run I it get a long stacktrace with errors similar to the > following: > > SEVERE: Unable to instrument > com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter > $ValueWriter$8. Security restrictions may not be entirely emulated. > > Which apparently has to do with the fact that it's being run in hosted > mode, and I read that it can be ignored. > The application saves and retrieves data without problems. > > After deploying it on appspot and when I try to save a new row in a > table I get this: > > javax.servlet.ServletContext log: Exception while dispatching incoming > RPC call > com.google.gwt.user.server.rpc.UnexpectedException: Service method > 'public abstract boolean > > com.appspot.positivevoice.client.panels.blog.BlogService.saveBlog(com.appspot.positivevoice.client.models.BlogModel)' > threw an unexpected exception: java.lang.NoClassDefFoundError: Could > not initialize class com.mysql.jdbc.ConnectionImpl > at > com.google.gwt.user.server.rpc.RPC.encodeResponseForFailure(RPC.java: > 378) > at > com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java: > 581) > > > Since the app works fine in hosted mode ( apart from those > exceptions ) I am not even sure which files I should add to the > post... > > Any idea much appreciated! > > Thanks > > -- > You received this message because you are subscribed to the Google Groups > "Google Web Toolkit" group. > To post to this group, send email to google-web-tool...@googlegroups.com. > To unsubscribe from this group, send email to > google-web-toolkit+unsubscr...@googlegroups.com<google-web-toolkit%2bunsubscr...@googlegroups.com> > . > For more options, visit this group at > http://groups.google.com/group/google-web-toolkit?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To post to this group, send email to google-web-tool...@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
