openjpa-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "gonzalad (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (OPENJPA-2327) QueryCache as hint
Date Wed, 23 Jan 2013 18:41:13 GMT

    [ https://issues.apache.org/jira/browse/OPENJPA-2327?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13560926#comment-13560926
] 

gonzalad commented on OPENJPA-2327:
-----------------------------------

>From what UI understood, there's no need with Open JPA for an additional query hint (query
cache being automatically active if resulting entities are @Cacheable).

So sorry for the confusion, I think we can close this ticket, it has no sense.
                
> QueryCache as hint
> ------------------
>
>                 Key: OPENJPA-2327
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-2327
>             Project: OpenJPA
>          Issue Type: Bug
>            Reporter: gonzalad
>
> Provide a way to enable query cache as a query hint.
> This would facilitate writing portable JPA applications.
> For the time being, with OpenJPA, we need to execute the following code to cache the
query :
> {code:java}
> OpenJPAEntityManager oem = ((OpenJPAQuery<?>) query).getEntityManager();
> OpenJPAEntityManagerFactory oemf = oem.getEntityManagerFactory();
> QueryResultCache qcache = oemf.getQueryResultCache();
> qcache.pin(query);
> {code}
> It would be easier if JPA provided a query hint like :
> {code:java}
> query.setHint("openjpa.cacheable", cache);
> {code}
> This would even enable us to use it in a NamedQuery declaration :
> {code:java}
> @NamedQuery(name = "Civilite.findAll",
>     query = "SELECT c FROM Civilite c", 
>     hints = @QueryHint(name = "openjpa.cacheable", value = "true"))
> {code}

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

Mime
View raw message