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Posted to dev@cayenne.apache.org by "Andrus Adamchik (JIRA)" <ji...@apache.org> on 2006/04/24 10:44:40 UTC

[JIRA] Created: (CAY-529) Algorithm for merging ORM mapping data coming from different sources

Algorithm for merging ORM mapping data coming from different sources
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         Key: CAY-529
         URL: http://issues.apache.org/cayenne/browse/CAY-529
     Project: Cayenne
        Type: Task

  Components: Cayenne JPA  
    Versions: JPA 1.0    
    Reporter: Andrus Adamchik
     Fix For: JPA 1.0


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.

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