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From "Andrus Adamchik (Commented) (JIRA)" <>
Subject [jira] [Commented] (CAY-1651) ObjectContext.localObject - defer FaultFailureExceptions on temporary IDs
Date Sun, 22 Jan 2012 08:13:38 GMT


Andrus Adamchik commented on CAY-1651:

Side effect of the new implementation - ObjectIdQuery with non-existing temp ID will now execute
successfully , but return no rows (in the past Cayenne stack would throw)
> ObjectContext.localObject - defer FaultFailureExceptions on temporary IDs
> -------------------------------------------------------------------------
>                 Key: CAY-1651
>                 URL:
>             Project: Cayenne
>          Issue Type: Improvement
>          Components: Core Library
>    Affects Versions: 3.1M3
>            Reporter: Andrus Adamchik
>            Assignee: Andrus Adamchik
>            Priority: Minor
>             Fix For: 3.1M4
> ObjectContext.localObject(Persistent) created per CAY-1611 has a subtle difference with
deprecated version of "localObject" - when passed a temporary ID, it does not blindly assumes
this ID is valid, but rather tries to find it along the chain of parent contexts and throws
immediately on failure. On the other hand we defer checking of permanent IDs, waiting for
the user to access object properties outside 'localObject'. 
> Permanent IDs can easily be invalid too (e.g. a DB row underneath can be deleted). Besides
a valid ID can become invalid at any moment before or after localObject call. So a difference
in handling both types of IDs is not logical. Let's defer temp ID checking, just like we do
for perm ID.

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