Support for mapping to-many as Maps and Sets and Collections
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Key: CAY-848
URL: https://issues.apache.org/cayenne/browse/CAY-848
Project: Cayenne
Issue Type: New Feature
Components: Cayenne Core Library
Affects Versions: 3.0
Reporter: Andrus Adamchik
Assignee: Andrus Adamchik
Fix For: 3.0
Per JPA spec we should support mapping to-many relationships as Lists,
Collections, Sets and Maps (we currently only do Lists). Need to add that stuff
to Cayenne classic and map to JPA. I see the following subtasks:
* Support explicit to-many semantics mapping in ObjRelationship (collection
class; map key for Maps)
* In the Modeler allow to specify the choices in ObjRelationship Inspector
* In class generation template use correct collection type (I guess for maps
the add/remove semantics can be the same as for lists ... not sure if we need
removeFrom(Object key)??)
* Runtime support, including reverse relationships
* Testing
* Bridging JPA mapping
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