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From "Andy Jefferson (JIRA)" <j...@apache.org>
Subject [jira] Updated: (JDO-615) MetaData specification API
Date Sat, 22 Nov 2008 12:28:46 GMT

     [ 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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