[jira] [Commented] (OPENJPA-1277) Support JPQL to Criteria Query conversion

["Brad Koehn (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/OPENJPA-1277?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13471566#comment-13471566 ] 

Brad Koehn commented on OPENJPA-1277:
-------------------------------------

I would love to have this feature. I have an application that needs to support generic, user-created, persistent queries (think reports). I'd love to give the user a UI that stores a JPQL query in the database. But when I run that query, I need to apply the (dynamic, also user-specified) security rules to the query. For this I'd love to have the user query in a Criteria format so that I can enhance it with whatever security filters are required. But since there's no good way to serialize a criteria query, translating JPQL to Criteria would be a great step. 
                
> Support JPQL to Criteria Query conversion
> -----------------------------------------
>
>                 Key: OPENJPA-1277
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-1277
>             Project: OpenJPA
>          Issue Type: New Feature
>          Components: jpa, query
>            Reporter: Pinaki Poddar
>            Assignee: Pinaki Poddar
>   Original Estimate: 672h
>  Remaining Estimate: 672h
>
> Develop a mechanics to generate a Criteria Query from a JPQL string.
> A mechanics to convert an existing JPQL string into a Criteria  Query will ease adoption of the new API. 
> The conversion mechanics should operate both a design-time (to emit Java source code) as well as runtime (to instantiate of Criteria  Query instances). 

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