[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-2522) Cache Provider implementation for IBM WebSphere's dynamic cache

[Joris Kuipers (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-2522?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_29072 ] 

Joris Kuipers commented on HHH-2522:
------------------------------------

AFAIK the WebSphere cache is responsible for doing locking, there's no need to add this yourself. It would also be nearly impossible, since this is a distributed object, therefore synchronizing in your local JVM is not enough. The IBM documentation has very little detail on this: if you want to make sure, you can decompile the classes in the com.ibm.ws.cache package and have a look (note: not the com.ibm.websphere.cache package, that only holds the public API). On WAS 6.1, you can find these classes in plugins\com.ibm.ws.runtime_6.1.0.jar.

> Cache Provider implementation for IBM WebSphere's dynamic cache
> ---------------------------------------------------------------
>
>                 Key: HHH-2522
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2522
>             Project: Hibernate3
>          Issue Type: New Feature
>          Components: core
>    Affects Versions: 3.2.3
>         Environment: Hibernate 3.2, IBM WebSphere Application Server version 5.x and 6.x
>            Reporter: Joris Kuipers
>            Priority: Minor
>         Attachments: WebSphereCache.java, WebSphereCacheProvider.java
>
>
> 2nd level cache implementation that uses WebSphere's dynamic cache feature as its backing implementation. 
> Using such an implementation is suggested by IBM in articles like http://www-128.ibm.com/developerworks/websphere/techjournal/0609_alcott/0609_alcott.html, but I couldn't find an existing implementation. Therefore, I wrote my own.
> I briefly documented the usage in the JavaDoc of the Provider implementation.
> Info in the dynamic cache itself can be found here:
> http://publib.boulder.ibm.com/infocenter/wasinfo/v6r1/index.jsp?topic=/com.ibm.websphere.base.doc/info/aes/ae/tdyn_distmap.html

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