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Date: Thu, 24 Jun 2010 20:15:53 +0200
From: Eric Charles <eric@u-mangate.com>
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CC: James Developers List <server-dev@james.apache.org>
Subject: Re: OpenJPA usage at Apache James
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Hi Pinaki,

OpenJPA 2.1.0-SNAPSHOT didn't help.
I also made a separate sample with a Message, AbstractMessage and Header 
(a message has many headers).
I defined:
- @OneToMany(mappedBy...) with type Header on the AbstractMessage
- @ManyToOne with type AbstractMessage on the Header.
With that config, the FK is not created (nor the corresponding 
message_id column in Header table). I receive no exception.

Another question was the definition of indexes: Does JPA standard 
provide this ?

Tks,

Eric


On 06/24/2010 05:26 AM, Eric Charles wrote:
> Hi Pinaki,
>
> We use the maven downloaded jar release 422266:935683 from 
> 22-Apr-2010, so we don't have the patch  for the MappedSuperClass.
> I didn't find a recent 2.0.0-SNAPSHOT on 
> http://people.apache.org/maven-snapshot-repository/ nor on 
> https://repository.apache.org/index.html.
>
> Will try with 2.1.0-SNAPSHOT.
>
> The entites can be found here:
> [1] AbstractJPAMessage 
> http://svn.apache.org/viewvc/james/imap/trunk/jpa/src/main/java/org/apache/james/imap/jpa/mail/model/AbstractJPAMessage.java?view=markup 
>
> [2] JPAHeader 
> http://svn.apache.org/viewvc/james/imap/trunk/jpa/src/main/java/org/apache/james/imap/jpa/mail/model/JPAHeader.java?view=markup 
>
> [3] JPAProperty 
> http://svn.apache.org/viewvc/james/imap/trunk/jpa/src/main/java/org/apache/james/imap/jpa/mail/model/JPAProperty.java?view=markup 
>
> [4] JPAMessage 
> http://svn.apache.org/viewvc/james/imap/trunk/jpa/src/main/java/org/apache/james/imap/jpa/mail/model/JPAMessage.java?view=markup 
>
> [5] JPAStreamingMessage 
> http://svn.apache.org/viewvc/james/imap/trunk/jpa/src/main/java/org/apache/james/imap/jpa/mail/model/openjpa/JPAStreamingMessage.java?view=markup 
>
>
> Tks,
>
> Eric
>
>
> On 06/23/2010 07:04 PM, Pinaki Poddar wrote:
>> Hi,
>> The "mappedBy" mapping on abstract class should work and the 
>> relations need
>> not be redefined in the concrete subclass.
>> But a critical bug on MappedSuperclass had been found recently -- 
>> which *may
>> be* impacting the mapping.
>>
>> 1. Which OpenJPA revision being used?
>> $ java -jar /path/to/openjpa.jar
>> shows the revision number.
>>
>> 2. If the used revision is prior to 952893 (dated June 8,2010), is it
>> possible to switch to a post-952893 version and see if that resolves the
>> issue?
>>
>> 3. Can you please post the relevant entity classes (JPAMesaage etc.) for
>> further analysis?
>>
>>
>>
>> -----
>> Pinaki
>