Hi Damob,
They work perfectly together because your data models are *pure* POJOs
with no dependencies on the datastore at all.
In contrast, in JDO, JPA, Objectify and SimpleDS your data models
usually use low-level Keys and possibly other types. This means that
you either need to make an extra layer of DTO's or make your UI code
dependant on the low-level API.
For example, a Band and its Musicians can be sent to GWT as a single
object:
class Band
{
@Key String name;
List<Musician> members;
}
With all the other libraries the data model needs Keys which
complicates things. You might send the Band and then need to send
more requests to read each band member from its Key.
I send data directly from my data layer to my GWT client and my client
code does not reference any com.google.appengine.* classes at all.
Hope this helps,
John
On 24 Mar 2010, at 03:29, Damob wrote:
I was wondering how well those two works together and how to link
them.
Thanks
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