Cached new entity has different primary key type to stored/loaded entity.
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Key: CAY-768
URL: https://issues.apache.org/cayenne/browse/CAY-768
Project: Cayenne
Issue Type: Bug
Components: Cayenne Core Library
Affects Versions: 2.0 [STABLE]
Environment: Arch Linux, Jetty 6.0.2, MySQL 5.0
Reporter: Chris Davies
Assigned To: Andrus Adamchik
Priority: Minor
Entities mapped with a primary key type of BIGINT seem to have different types depending on whether the entity was newly-created (through DataContext.newObject) or loaded from a database through some query. In my experience, the primary key type (when looked up using DataObjectUtils.pkForObject) of a newly-created entity is java.lang.Integer, where as the primary key type of entities loaded from a database is java.lang.Long.
I've (temporarily?) fixed the problem in my application by just treating all entity primary keys as Objects, as I suspect there might be a good reason for this behaviour that I don't understand yet.
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