On May 16, 5:57 am, Toby Reyelts <[email protected]> wrote: > On Sun, May 15, 2011 at 7:58 AM, Philippe Marschall < > > > > > > > > > > [email protected]> wrote: > > > On May 13, 2:29 am, Nichole <[email protected]> wrote: > > > Just a quick summary, the servlet spec requires that a servlet > > > container such as appengine > > > provider an implementation for a service. Those jars such as servlet- > > > api-2.4.jar are needed > > > at compile time. > > > That's why there's provided scope in Maven. > > > > They are sometimes provided by the servlet container/ > > > engines at run time > > > in a global directory that is found by the container/engine > > > classloader. > > > They have to always be provided by the container. E.g. the > > HttpServletRequest interface that the container classes implement and > > that you program against have to be the same class defined by the same > > classloader otherwise you get a LinkageError. > > > > appengine provides > > > the servlet, jsp implementations for us at runtime. > > > > The appengine specific service implementations are also needed at > > > runtime and compile > > > time and are present in the appengine-api-1.0-sdk-<ver>.jar. > > > They've chosen not to add the latest sdk to the container global > > > classpath, so yes, the > > > application must provide it. > > > But that's silly. That means you deploy the local simulation > > implementations into production. > > No, appengine-api.jar is the definition of the App Engine API, with a > convenient interface that wraps the running API implementation. In the case > of the dev_appserver, the implementation is in appengine-local-runtime.jar > (which you should not be uploading). In the case of production, the > implementation is our production servers, running code you do not have > access to.
That makes even less sense. So you're providing the implementation classes through the container that link against the API classes coming from the WebAppClassLoader? Why not just provide the API classes through the container as well? Cheers Philippe -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" 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-appengine-java?hl=en.
