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Date: Fri, 30 Jan 2009 09:40:59 -0800 (PST)
From: "Michael Bouschen (JIRA)" <jira@apache.org>
To: jdo-dev@db.apache.org
Subject: [jira] Commented: (JDO-615) MetaData specification API
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    [ https://issues.apache.org/jira/browse/JDO-615?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12668949#action_12668949 ] 

Michael Bouschen commented on JDO-615:
--------------------------------------

I like the idea taking Class instances as an argument. 

However, I propose that the method creating the package metadata takes a java.lang.Package argument (instead of a Class instance):
  PackageMetadata JDOMetadata.newPackageMetadata(java.lang.Package pkg); 
It's easy to get the Package instance from a Class instance: cls.getPackage(). 


> 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: BooleanProperties.patch, jdometadata-6.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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