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From "Catalina Wei (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (OPENJPA-879) JPA2 Query support for general and qualified identification variable
Date Thu, 05 Mar 2009 18:43:56 GMT

     [ https://issues.apache.org/jira/browse/OPENJPA-879?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Catalina Wei resolved OPENJPA-879.
----------------------------------

       Resolution: Fixed
    Fix Version/s: 2.0.0

Code committed in revision r750517  supports general/qualified identification variables appear
in selections:

examples:
    select KEY(e) from PhoneNumber p, in (p.emps) e

   select ENTRY(e) from PhoneNumber p, in (p.emps) e

  select VALUE(e) from PhoneNumber p, in (p.emps) e

in which emps is a relation field of  java type Map<K,V> .

JPA2 JPQL syntax allows qualified identification variables to appear in single_valued_path_expression,
which implies that
   KEY(e) and VALUE(e) can be used to as a path and also can be further navigated to its fields
or relations. Those support will be added in iteration 5.

More testcases will be added to cover additional annotations using @MapKeyClass and @MapKeyJoinColumns.

> JPA2 Query support for general and qualified identification variable 
> ---------------------------------------------------------------------
>
>                 Key: OPENJPA-879
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-879
>             Project: OpenJPA
>          Issue Type: Sub-task
>    Affects Versions: 2.0.0
>            Reporter: Catalina Wei
>            Assignee: Catalina Wei
>             Fix For: 2.0.0
>
>
> support query syntax of  followings in path expressions :
> 1.  Key(identifier)
> 2.  Value(identifier)
> 3.  Entry(identifier)

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