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https://issues.apache.org/jira/browse/JDO-652?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16616793#comment-16616793
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Michael Bouschen commented on JDO-652:
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I uploaded a new patch JDO-652-api-ifTheElse.txt extending the API as proposed.
In the interface IfThenElseExpression I used the method names "ifThen" and
"elseEnd" instead of "when" and "otherwise", because I think they better match
the builder method names in JDOQLTypedQuery. But if everybody else thinks
"when" and "otherwise" are the better choice I'm open to change that.
I also changed NumericExpression in order to solve my compilation problem with
ifThenElse expression.
Please have a look.
> Provision of a typesafe refactor-friendly query capability for JDOQL
> --------------------------------------------------------------------
>
> 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
> Assignee: Michael Bouschen
> Priority: Major
> Fix For: JDO 3.2
>
> Attachments: JDO-652-api-ifTheElse.txt, JDO-652-api-patch-Andy.txt,
> JDO-652-patch3.txt, typesafe.patch, typesafe_manifest.patch
>
>
> 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 should
> seriously consider introducing something along these lines in the JDO2.4
> timeframe.
> There is a comparison of JPA Criteria with QueryDSL over at
> http://source.mysema.com/forum/mvnforum/viewthread_thread,49
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