On Tue, Apr 27, 2010 at 11:27 PM, Maxim Cherednik <[email protected] > wrote:
> Hey Simith, > I am struggling exactly with the same problem. > > I read manual about inheritance here > > http://code.google.com/appengine/docs/java/datastore/dataclasses.html#Inheritance > So I was pretty sure that "JDO inheritance on App Engine works as > described in the DataNucleus documentation". > > First of all, Saving works for me, but I have no idea how to retrieve > List<BaseClass> :( > > Any ideas? > > Hello Maxim, After searching the mailing list if find that it is not supported by AppEngine, even if you set the Subclasses retrieval flag to true in the getExtent API it is set to false in the implementation further down in the getExtent method , so you might have to query specifically for what you want, unless someone suggests a workaround or wait till it is implemented. it is mentioned here : http://datanucleus.blogspot.com/2010/01/gaej-and-jdojpa.html Cheers, Simith -- 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.
