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Posted to dev@openjpa.apache.org by "Albert Lee (Updated) (JIRA)" <ji...@apache.org> on 2012/02/02 20:38:53 UTC

[jira] [Updated] (OPENJPA-1011) Instantiate meta-model classes for JPA 2.0 from XML descriptors

     [ https://issues.apache.org/jira/browse/OPENJPA-1011?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Albert Lee updated OPENJPA-1011:
--------------------------------

    Affects Version/s: 2.2.0
                       2.1.1
        Fix Version/s:     (was: 2.2.0)
                       2.3.0

Moved fix version to 2.3.0 in preparation for 2.2.0 release.
                
> Instantiate meta-model classes for JPA 2.0 from XML descriptors
> ---------------------------------------------------------------
>
>                 Key: OPENJPA-1011
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-1011
>             Project: OpenJPA
>          Issue Type: Improvement
>    Affects Versions: 2.0.0, 2.1.1, 2.2.0
>            Reporter: Pinaki Poddar
>            Assignee: Pinaki Poddar
>            Priority: Critical
>             Fix For: 2.3.0
>
>   Original Estimate: 672h
>  Remaining Estimate: 672h
>
> JPA 2.0 has introduced a specification for strictly-typed dynamic query construction. The type-strictness is based on availability of a meta-model. The user application can either use meta-model API to access the type information or instantiate the meta-model (referred as canonical meta-model) with a set of auto-generated classes for compile-time binding. This issue refers to instantiating the canonical meta-model at compile-time.
> The process involves processing source code annotations or xml descriptors.
> Annotation processing support in Java platform has significantly changed across JDK version 5 and 6. In JDK5, the annotation processing was supported by a command-line tool named apt based on com.sun.mirror API library. In JDK 6, the annotation processing is more seamlessly integrated with javac compilation process with javax.annotation API libraries.
> It is not obvious at this point on how to hook into compiler life-cycle when source code has *no* annotation and persistence meta-data is *only* available in XML descriptors.

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