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Posted to jdo-dev@db.apache.org by "Andy Jefferson (JIRA)" <ji...@apache.org> on 2008/11/22 13:28:46 UTC
[jira] Updated: (JDO-615) MetaData specification API
[ https://issues.apache.org/jira/browse/JDO-615?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Andy Jefferson updated JDO-615:
-------------------------------
Attachment: jdometadata.patch
Work-in-progress patch to provide javax.jdo.metadata for use in having an API for metadata.
Some classes still need completion to match the DTD/XSD.
Maybe FileMetaData should be called JDOMetaData?
I've included copies of some enums under javax.jdo.annotations. Maybe they should only be under javax.jdo.metadata ? but what about backwards compatibility?
Interface with PMF could be as simple as
pmf.registerMetaData(FileMetaData md);
or we could provide access to current metadata too, so
pmf.getMetaData(String className);
> MetaData specification API
> --------------------------
>
> Key: JDO-615
> URL: https://issues.apache.org/jira/browse/JDO-615
> Project: JDO
> Issue Type: New Feature
> Reporter: Andy Jefferson
> Fix For: JDO 2 maintenance release 3
>
> Attachments: jdometadata.patch
>
>
> We can specify MetaData via XML or annotations. The only way missing is via an API. I propose mirroring the XML structure with interfaces of the form
> public interface MetaData
> {
> addExtension(String key, String value);
> removeExtension(String key, String value);
> ...
> }
> public interface FileMetaData
> {
> addPackage(PackageMetaData pmd);
> ...
> }
> public interface PackageMetaData
> {
> addClass(ClassMetaData cmd)
> ...
> }
> public interface ClassMetaData
> {
> addField(FieldMetaData fmd)
> ...
> }
> public interface FieldMetaData
> {
> setInheritance(InheritanceMetaData inhmd)
> ...
> }
> and so on.
> We would then require a method on the PMF to register the metadata.
> If there are no objections to such a feature I'll propose a patch to try to provide all current JDO2 capabilities.
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