What if you want to keep the object detachable? On May 12, 10:59 pm, Fred Sauer <fre...@google.com> wrote: > 2009/5/12 Miguel Méndez <mmen...@google.com> > > > I must admit that I've not personally researched it. I think that it has > > been discussed on the appengine user group however. You may also want to > > search this group. > > The problem, as I understand it, is that enhancement adds fields to the > > runtime type. But, GWT-RPC works off of the static (pre-enhancement) view > > of the type which is why you get the errors. I'm not sure what the best > > work around is. I do know Ray Cromwell has done some looking into it. > > Thanks, Miguel. > > @Pavel I think a good starting point is here: > > http://timepedia.blogspot.com/2009/04/google-appengine-and-gwt-now-ma... > > A key bit is this: > �...@persistencecapable(identityType = IdentityType.APPLICATION, detachable = > "false") > > Fred > > > > > > > On Tue, May 12, 2009 at 1:34 PM, Pavel Byles <pavelby...@gmail.com> wrote: > > >> Miguel, > >> YES! > >> that's it. As soon as I comment out the @PersistenceCapable it works! > > >> Now I know there are issues w/ GWT and enhanced classes, but exactly how > >> am I supposed to persist data w/o having that annotation? > > >> 2009/5/12 Miguel Méndez <mmen...@google.com> > > >>> What if you try to have it not be persistable (comment out the > >>> persistence annotations, rebuild, and return a dummy one that was not > >>> instantiated by the ORM code)? I wonder if this is the ORM and GWT-RPC > >>> incompatibility. > > >>> On Tue, May 12, 2009 at 1:00 PM, Pavel Byles <pavelby...@gmail.com>wrote: > > >>>> I suspect it has something to do with the object I am returning. > > >>>> When I use the same service to return a String or a simple class that > >>>> contains a String everything works fine. > > >>>> But when I try to return instances of Country then I get the error. > > >>>> Any ideas why this happens? > >>>> Here is the Country class: > > >>>> import java.io.Serializable; > > >>>> import javax.jdo.annotations.IdentityType; > >>>> import javax.jdo.annotations.PersistenceCapable; > >>>> import javax.jdo.annotations.Persistent; > >>>> import javax.jdo.annotations.PrimaryKey; > > >>>> @PersistenceCapable(identityType = IdentityType.APPLICATION, detachable > >>>> = "true") > >>>> public class Country implements Serializable { > >>>> private static final long serialVersionUID = -1L; > > >>>> @PrimaryKey > >>>> @Persistent > >>>> private String name; > > >>>> @Persistent > >>>> private float latitude; > > >>>> @Persistent > >>>> private float longitude; > > >>>> public Country () { > > >>>> } > > >>>> public Country (String name, float latitude, float longitude) { > >>>> this.name = name; > >>>> this.latitude = latitude; > >>>> this.longitude = longitude; > >>>> } > > >>>> public String getName() { > >>>> return name; > >>>> } > > >>>> public void setName(String name) { > >>>> this.name = name; > >>>> } > > >>>> public float getLatitude() { > >>>> return latitude; > >>>> } > > >>>> public float getLongitude() { > >>>> return longitude; > >>>> } > > >>>> public void setLatitude(float latitude) { > >>>> this.latitude = latitude; > >>>> } > > >>>> public void setLongtiude(float longitude) { > >>>> this.longitude = longitude; > >>>> } > >>>> } > > >>> -- > >>> Miguel > > >> -- > >> -Pav > > > -- > > Miguel > > -- > Fred Sauer > Developer Advocate > Google Inc. 1600 Amphitheatre Parkway > Mountain View, CA 94043 > fre...@google.com
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