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From "Pinaki Poddar (JIRA)" <j...@apache.org>
Subject [jira] Updated: (OPENJPA-1195) Allow datastore function as query expression
Date Sat, 01 Aug 2009 15:49:14 GMT

     [ https://issues.apache.org/jira/browse/OPENJPA-1195?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Pinaki Poddar updated OPENJPA-1195:
-----------------------------------

          Component/s: query
    Affects Version/s: 2.0.0
        Fix Version/s: 2.0.0

> Allow datastore function as query expression
> --------------------------------------------
>
>                 Key: OPENJPA-1195
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-1195
>             Project: OpenJPA
>          Issue Type: New Feature
>          Components: query
>    Affects Versions: 2.0.0
>            Reporter: Pinaki Poddar
>            Assignee: Pinaki Poddar
>             Fix For: 2.0.0
>
>
> Create a query expression that uses a datastore function such as MOD(..) or MAX(..) in
a generic fashion.
> This is required by function() support for CriteriaQuery and adds a generic capability
for queries so we can query something like
>   "select  CURRENT_USER(), x.name FROM Person x WHERE LENGTH(x.name)>10 ORDER BY LENGTH(x.name)"
> Notice that JPQL Parser may not like the syntax -- but CriteriaQuery will allow such
possibility.
> Allow the function() to accept 0 or more arguments as expressions.

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