[jira] Closed: (JDO-599) Level 2 Caching ability to restrict what classes/fields are cahed

["Craig Russell (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/JDO-599?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Craig Russell closed JDO-599.
-----------------------------

    Resolution: Fixed

The draft specification dated 30-July-2008 has been updated.

> Level 2 Caching ability to restrict what classes/fields are cahed
> -----------------------------------------------------------------
>
>                 Key: JDO-599
>                 URL: https://issues.apache.org/jira/browse/JDO-599
>             Project: JDO
>          Issue Type: New Feature
>          Components: api2, api2-legacy, specification
>            Reporter: Andy Jefferson
>            Assignee: Craig Russell
>             Fix For: JDO 2 maintenance release 2
>
>         Attachments: api2-legacy_schema.patch, api2_annotations.patch, api2_schema.patch, jdo-599.patch
>
>
> Having more control over what goes into an L2 cache is desirable for some systems. Currently JDO(2) provides no control other than the pin/unpin/evict methods on the DataStoreCache. One way of providing more control would be to allow specification via metadata (XML/annotations) for classes/fields.
> 1. Add a "cacheable" attribute to class/field XML elements with default value of "true".
> 2. Add a "cacheable" property to @PersistenceCapable/@Persistent with default value of true.
> 3. Add a new annotation @Cacheable applicable to class/field/property
> The user can then define particular classes to never be L2 cached, and also particular fields to never be L2 cached.

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