[CAY-529] Algorithm for merging ORM mapping data coming from different sources

• Type: Task
• Status: Closed
• Priority: Major
• Resolution: Won't Fix
• Affects Version/s: JPA 1.0
• Fix Version/s: JPA 1.0
• Assignee: Unassigned
• Reporter: Andrus Adamchik
• Created: 24/Apr/06 15:43
• Updated: 06/Jan/10 09:49
• Resolved: 18/Dec/07 21:04

Description

We already have XML and annotation loaders of mapping info. We need to finish implementation of the skeleton combined loader - EntityMapLoader - that merges multiple JpaEntityMaps together and applies defaults. Algorithm is roughly the following:

1. load all ORM descriptors and merge them together
2. load annotations for all mentioned classes
3. merge combined ORM descriptor with the annotated descriptor, overriding annotation values.
4. set defaults

See TODO notes under EntityMapLoader and JpaEntityMap - these are the missing pieces.