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From "Andy Jefferson (JIRA)" <j...@apache.org>
Subject [jira] Commented: (JDO-615) MetaData specification API
Date Fri, 17 Jul 2009 09:05:15 GMT

    [ https://issues.apache.org/jira/browse/JDO-615?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12732419#action_12732419
] 

Andy Jefferson commented on JDO-615:
------------------------------------

DataNucleus actually does have the start of tests for JDO2.3 Metadata and, as since 2003,
has been open for contributions. If you have tests to contribute for this feature then why
not raise a JIRA (on DN JIRA) and contribute the tests there (using the existing DN sample
classes), with patches for
http://datanucleus.svn.sourceforge.net/viewvc/datanucleus/test/accessplatform/trunk/test.jdo.general/

> MetaData specification API
> --------------------------
>
>                 Key: JDO-615
>                 URL: https://issues.apache.org/jira/browse/JDO-615
>             Project: JDO
>          Issue Type: New Feature
>          Components: api2, specification, tck2
>            Reporter: Andy Jefferson
>            Assignee: Craig Russell
>             Fix For: JDO 2 maintenance release 3
>
>         Attachments: BooleanProperties.patch, jdometadata-6.patch, lower-case-d-in-metadata.patch,
type-2.patch, type.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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