Wow, I'm embarrassed to say that I have always assumed that an interface
can only extend a single interface, because that's the way that it works
for classes. There's no reason it should be that way, though, and it makes
life a lot easier to know that it's possible. I would have done it this
way originally over a year ago had I known this!
Thanks,
Ryan
On Tuesday, June 12, 2012 2:53:55 AM UTC-4, Thomas Broyer wrote:
> I can't see any reason it wouldn't work, but I think you'd rather extract
> an interface, implemented by your domain object, and extended by your proxy
> (in addition to EntityProxy).
>
> interface Domain { /* getters and setters */ }
>
> class DomainImpl implements Domain { … }
>
> interface DomainProxy extends Domain, EntityProxy { … }
>
> In case you were wondering, this approach has been proven to work.
> One exception is currently if your Domain interface references another
> interface (as opposed to "simple value types"), where you'd face
> http://code.google.com/p/google-web-toolkit/issues/detail?id=5926
> This issue will be fixed in GWT 2.5.1, which we expect to release by the
> end of the summer.
>
> On Monday, June 11, 2012 9:35:02 PM UTC+2, Ryan McFall wrote:
>>
>> One of the things I don't like about the design of the RequestFactory
>> is the fact that client-side proxies need to extend EntityProxy; I
>> think I understand why this is needed, but it makes it more difficult
>> to write code that can operate on both proxies and actual domain
>> objects.
>>
>> One way of getting around this is to have the domain objects implement
>> the proxy interface. This means that the domain objects must
>> implement EntityProxy, giving a stableId method that shouldn't
>> actually be called, but allows utility code to treat proxies and
>> domain objects in the same way.
>>
>> Before going down this route, I'm wondering if there are reasons it
>> won't work that I haven't thought about.
>>
>> Thanks!
>> Ryan
>
>
> On Monday, June 11, 2012 9:35:02 PM UTC+2, Ryan McFall wrote:
>>
>> One of the things I don't like about the design of the RequestFactory
>> is the fact that client-side proxies need to extend EntityProxy; I
>> think I understand why this is needed, but it makes it more difficult
>> to write code that can operate on both proxies and actual domain
>> objects.
>>
>> One way of getting around this is to have the domain objects implement
>> the proxy interface. This means that the domain objects must
>> implement EntityProxy, giving a stableId method that shouldn't
>> actually be called, but allows utility code to treat proxies and
>> domain objects in the same way.
>>
>> Before going down this route, I'm wondering if there are reasons it
>> won't work that I haven't thought about.
>>
>> Thanks!
>> Ryan
>
>
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