"property" package refactoring
------------------------------
Key: CAY-701
URL: http://issues.apache.org/cayenne/browse/CAY-701
Project: Cayenne
Type: Task
Components: Cayenne Core Library
Versions: 3.0
Reporter: Andrus Adamchik
Assigned to: Andrus Adamchik
Fix For: 3.0
org.apache.cayenne.property package requires some refactoring now that we can
identify all groups of persistent objects that we need to support via the
Cayenne stack. Those are:
* Enhanced POJO implementing "Persistent" via the enhancer.
* Persistent objects generated vi client template (using ValueHolder for the
to-one relationships)
* DataObject (generic objects that store properties in a map and provide access
via generic methods on the object; using Fault class for lazy faulting)
The few problems this refactoring effort will try to address:
* Replacing property descriptors inheritance with composition/decoration, thus
separating different concerns like faulting and property access, and making
the descriptors more flexible.
* Naming - the current class naming we got was due to the implementation based
on inheritance. Better naming for the property interfaces will be something
like this:
- AttributeProperty
- ToOneProperty
- ToManyProperty
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