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Date: Thu, 1 Jul 2010 17:08:49 -0400 (EDT)
From: =?utf-8?Q?Timo_Westk=C3=A4mper_=28JIRA=29?= <jira@apache.org>
To: jdo-dev@db.apache.org
Subject: [jira] Commented: (JDO-652) Provision of a statically-typed
 refactor-friendly query capability for JDOQL
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    [ https://issues.apache.org/jira/browse/JDO-652?page=3Dcom.atlassian.ji=
ra.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=3D1288442=
3#action_12884423 ]=20

Timo Westk=C3=A4mper commented on JDO-652:
-------------------------------------

Matthew, could you give some code examples how a fluent Query API using the=
 not implemented Java features could look like?

If I understand correctly it provides only typesafe shortcuts to direct fie=
lds and methods. So you end up with a static metamodel like in JPA 2 Criter=
ia. Using a static metamodel for query construction is quite verbose as you=
 will know if you have used JPA 2 Criteria.

> Provision of a statically-typed refactor-friendly query capability for JD=
OQL
> -------------------------------------------------------------------------=
---
>
>                 Key: JDO-652
>                 URL: https://issues.apache.org/jira/browse/JDO-652
>             Project: JDO
>          Issue Type: New Feature
>          Components: api, specification, tck
>            Reporter: Andy Jefferson
>             Fix For: JDO 3 maintenance release 1
>
>
> There are various querying capabilities of this type around. JPA2 has its=
 Criteria query API. Third party solutions like QueryDSL also exist, in its=
 case providing a JDOQL implementation (as well as JPQL, and HQL). We shoul=
d seriously consider introducing something along these lines in the JDO2.4 =
timeframe.=20
> There is a comparison of JPA Criteria with QueryDSL over at=20
> http://source.mysema.com/forum/mvnforum/viewthread_thread,49

--=20
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