Support a way of defining inheritance strategy that results in a table per
class with the table containing columns for all fields in the class (inc
superclasses)
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Key: JDO-674
URL: https://issues.apache.org/jira/browse/JDO-674
Project: JDO
Issue Type: New Feature
Components: api, specification, tck
Reporter: Andy Jefferson
JPA provides an inheritance strategy "TABLE PER CLASS". In JPA this is defined
in the root of an inheritance tree and implies that all classes in the
inheritance tree have their own table that contains columns for all fields (inc
fields in superclasses). There is currently no way to achieve this with JDO's
strategy specification capability.
Propose we provide one of the following
1. Just have a strategy "complete-table" specified in the root of the
inheritance hierarchy that implies the same as the JPA situation. This is the
simplest to define.
2. Have a strategy "complete-table" that can be specified on any class with the
result that this class has a table containing columns for all fields (inc
superclasses). There are difficulties in defining what happens in the case of a
subclass - can it take any of the standard inheritance strategy settings ?
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