Great.
On 05/06/2007, at 6:39 PM, Andrus Adamchik wrote:
> Yeah, I am leaning towards merging the callback code into the base
> context... The ability to proxy an ObjectContext is very nice, but
> it changes a few standard Cayenne assumptions about the object
> context. I guess for such fundamental functionality like callbacks,
> we shouldn't be doing that.
>
> Andrus
>
> On Jun 5, 2007, at 10:40 AM, Lachlan Deck (JIRA) wrote:
>
>> Lifecycle callbacks *CallbackInterceptor concept introduces
>> problems for testing equality of contexts
>> ---------------------------------------------------------------------
>> --------------------------------
>>
>> Key: CAY-797
>> URL: https://issues.apache.org/cayenne/browse/
>> CAY-797
>> Project: Cayenne
>> Issue Type: Bug
>> Components: Cayenne Core Library
>> Affects Versions: 3.0
>> Environment: 3.0-prerelease svn 523667
>> Reporter: Lachlan Deck
>> Assignee: Andrus Adamchik
>>
>>
>> Say you create a callback intercepted context as described here
>> (http://cayenne.apache.org/doc/lifecycle-callbacks.html), or as in
>> my case created a subclass of ObjectContextCallbackInterceptor to
>> wrap these concepts.
>>
>> ObjectContext myContext = new CallbackInterceptedContext();
>> Object a = myContext.newObject(SomeClass.class);
>> Object b = myContext.newObject(SomeClass.class);
>>
>> myContext.equals( a.getObjectContext() ); // false (unless I
>> override equals to provide a better test)
>> a.getObjectContext().equals( myContext ); // false
>> a.getObjectContext() == myContext; // false
>> a.getObjectContext().equals( b.getObjectContext() ); // true
>>
>> So this gets a little messy having to essentially test in the
>> correct direction. Now, I understand why this occurs (because the
>> CallbackIntercepting essentially provides a proxy context for the
>> context it contains) but it seems to me that this leads to some
>> difficulties like the above that could possibly be more easily
>> overcome were both DataContext and CayenneContext to implement
>> callback intercepting directly.
>>
>> Thoughts?
>>
>> --
>> This message is automatically generated by JIRA.
>> -
>> You can reply to this email to add a comment to the issue online.
with regards,
--Lachlan Deck
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