ClassDescriptor refactoring - replacing returned iterators with collections
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Key: CAY-1439
URL: https://issues.apache.org/jira/browse/CAY-1439
Project: Cayenne
Issue Type: Task
Components: Core Library
Affects Versions: 3.1M1
Reporter: Andrus Adamchik
Assignee: Andrus Adamchik
Fix For: 3.1M1
ClassDescriptor interface has the following methods returning iterators:
* 'getIdProperties'
* 'getDiscriminatorColumns'
* 'getMapArcProperties'
The original premise of this design was that certain collections can be built
dynamically based on more than one source of metadata. This however defeated
the idea of a "compiled" nature of ClassDescriptor, and none of the 3.1
descriptors are taking advantage of that. (Maybe 3.0 did? we had lots of odd
descriptors there).
So replacing the return type from Iterator<T> to Collection<T>. This will
result in a cleaner (e.g. for loops will be possible), less weird code.
Unfortuanely the change is not backwards compatible,as I couldn't come up with
decent alternatie naming that would've been required to keep the deprecated
iterator methods.
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