Hi Tristan Sorry I didn't answer earlier, I got sick and I am trying to catch up with other things at the moment.
Thanks for your answer and your example. I will take up on your offer some time soon. Cheers, Fred On Tue, Apr 13, 2010 at 01:03, Tristan <[email protected]> wrote: > I should be able to help... what are you trying to do? > > to use a predefined type that is storable in the datastore (http:// > code.google.com/appengine/docs/java/datastore/ > dataclasses.html#Core_Value_Types) > > all you do is cast that property so.. > > Entity entity = new Entity("myKind"); > Email myEmail = new Email("[email protected]"); > entity.setProperty("emailProperty", myEmail); > Key key = datastore.put(entity); > > to get it back just cast it > > Entity storedEntity = datastore.get(key); > Email storedEmail = (Email) storedEntity.getProperty("emailProperty"); > > they also appear to implement Comparable interface, so you can compare > these things... > > is there anything more specific you need? > > Tristan > > On Apr 9, 4:31 am, Fred Janon <[email protected]> wrote: >> Hi, >> >> Are there any examples on how to use the low level data store API, >> other than the short example on the Javadoc? Especially on how to use >> the predefined types like email, GeoPt, address... Is the source code >> available for these objects? I am interested in the compare method for >> these objects. >> >> Thanks >> >> Fred > > -- > 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. > > -- 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.
