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Posted to dev@ode.apache.org by Rafal Rusin <ra...@intalio.com> on 2010/06/10 16:01:00 UTC
Changing roadmap for JPA refactoring
Hello,
is this possible (and how much effort it is) to make JPA (hibernate powered
version) work on the same schema as dao-hib does?
This way we could migrate all current hibernate users to JPA in future and
finally drop hib-dao. I believe there are not much current OpenJPA users, so
we can modify this schema. On the other hand, there's a lot of dao-hib
users,
so we really want to migrate them (because of later drop for dao-hib).
What do you think?
--
Regards,
Rafał Rusin
http://rrusin.blogspot.com
Re: Changing roadmap for JPA refactoring
Posted by Rafal Rusin <ra...@intalio.com>.
OK, guys. I'm with you for JPA 1.0 and 2.0 support (+1).
+1 also for small migration SQL scripts from dao-hib. Something to include
here in future:
https://cwiki.apache.org/confluence/display/ODExSITE/Upgrading+ODE
On Fri, Jun 11, 2010 at 6:19 AM, Milinda Pathirage <
milinda.pathirage@gmail.com> wrote:
> +1 for providing both JPA 1.0 and JPA 2.0 support.
>
> Milinda
>
>
> On Fri, Jun 11, 2010 at 6:14 AM, Jeff Yu <je...@gmail.com> wrote:
>
>> I think we shouldn't expect to use the schema as same as dao-hib at this
>> stage, as I believe there would still some minor changes in the JPA Dao.
>> And
>> I think it should be acceptable to have little update on the schema change
>> as long as we specify them out and provide some simple migration utility.
>>
>> With regard to the JPA 2.0, I am thinking about that whether we can make
>> ODE
>> run against both JPA 1.0 and JPA 2.0 container. I believe we have many
>> users
>> running against JPA 1.0 container, if we upgrade it to JPA 2.0, they have
>> to
>> upgrade their JPA container. So it would be best that we say adding some
>> jars, it would support JPA 2.0, otherwise, it is for JPA 1.0 by default.
>> what do you think?
>>
>> For the jpa change that I did now, I will try to commit them in after
>> axis2-war module test part is enabled and checked in.
>>
>> Regard
>> Jeff
>>
>> On Fri, Jun 11, 2010 at 1:32 AM, Aaron Anderson <nickmalthus@yahoo.com
>> >wrote:
>>
>> > HI Rafal,
>> >
>> > I have attached the generated derby DDL scripts for the hibernate DAO
>> > (derby-hib.sql) and JPA DAO (derby.sql). They are very similar and it
>> > shouldn't be much of a problem to make the JPA entities map to the
>> hibernate
>> > schema. It is probably best that there is one static and supported DB
>> schema
>> > anyway.
>> >
>> > While addressing the JPA changes we should also consider upgrading to
>> JPA
>> > 2.0. There are only a few features that would simplify the JPA code but
>> if
>> > there are not that many current ODE JPA users it would be best to start
>> off
>> > with the latest version and avoid future versioning conflicts.
>> >
>> > Regards,
>> >
>> > Aaron
>> >
>> > *From:* Rafal Rusin <ra...@intalio.com>
>> > *To:* Jeff Yu <je...@gmail.com>; Aaron Anderson <
>> > nickmalthus@yahoo.com>
>> > *Cc:* dev@ode.apache.org
>> > *Sent:* Thu, June 10, 2010 9:01:00 AM
>> > *Subject:* Changing roadmap for JPA refactoring
>> >
>> > Hello,
>> >
>> > is this possible (and how much effort it is) to make JPA (hibernate
>> powered
>> > version) work on the same schema as dao-hib does?
>> > This way we could migrate all current hibernate users to JPA in future
>> and
>> > finally drop hib-dao. I believe there are not much current OpenJPA
>> users, so
>> > we can modify this schema. On the other hand, there's a lot of dao-hib
>> > users,
>> > so we really want to migrate them (because of later drop for dao-hib).
>> >
>> > What do you think?
>> >
>> > --
>> > Regards,
>> > Rafał Rusin
>> > http://rrusin.blogspot.com
>> >
>>
>>
>>
>> --
>> Cheers,
>> Jeff Yu
>>
>> ----------------
>> blog: http://jeff.familyyu.net
>>
>
>
>
> --
> Milinda Pathirage
> Technical Lead & Product Manager WSO2 BPS; http://wso2.org/bps
> WSO2 Inc.; http://wso2.com
> E-mail: milinda@wso2.com, milinda.pathirage@gmail.com
> Web: http://mpathirage.com
> Blog: http://blog.mpathirage.com
>
--
Regards,
Rafał Rusin
http://rrusin.blogspot.com
Re: Changing roadmap for JPA refactoring
Posted by Milinda Pathirage <mi...@gmail.com>.
+1 for providing both JPA 1.0 and JPA 2.0 support.
Milinda
On Fri, Jun 11, 2010 at 6:14 AM, Jeff Yu <je...@gmail.com> wrote:
> I think we shouldn't expect to use the schema as same as dao-hib at this
> stage, as I believe there would still some minor changes in the JPA Dao.
> And
> I think it should be acceptable to have little update on the schema change
> as long as we specify them out and provide some simple migration utility.
>
> With regard to the JPA 2.0, I am thinking about that whether we can make
> ODE
> run against both JPA 1.0 and JPA 2.0 container. I believe we have many
> users
> running against JPA 1.0 container, if we upgrade it to JPA 2.0, they have
> to
> upgrade their JPA container. So it would be best that we say adding some
> jars, it would support JPA 2.0, otherwise, it is for JPA 1.0 by default.
> what do you think?
>
> For the jpa change that I did now, I will try to commit them in after
> axis2-war module test part is enabled and checked in.
>
> Regard
> Jeff
>
> On Fri, Jun 11, 2010 at 1:32 AM, Aaron Anderson <nickmalthus@yahoo.com
> >wrote:
>
> > HI Rafal,
> >
> > I have attached the generated derby DDL scripts for the hibernate DAO
> > (derby-hib.sql) and JPA DAO (derby.sql). They are very similar and it
> > shouldn't be much of a problem to make the JPA entities map to the
> hibernate
> > schema. It is probably best that there is one static and supported DB
> schema
> > anyway.
> >
> > While addressing the JPA changes we should also consider upgrading to JPA
> > 2.0. There are only a few features that would simplify the JPA code but
> if
> > there are not that many current ODE JPA users it would be best to start
> off
> > with the latest version and avoid future versioning conflicts.
> >
> > Regards,
> >
> > Aaron
> >
> > *From:* Rafal Rusin <ra...@intalio.com>
> > *To:* Jeff Yu <je...@gmail.com>; Aaron Anderson <
> > nickmalthus@yahoo.com>
> > *Cc:* dev@ode.apache.org
> > *Sent:* Thu, June 10, 2010 9:01:00 AM
> > *Subject:* Changing roadmap for JPA refactoring
> >
> > Hello,
> >
> > is this possible (and how much effort it is) to make JPA (hibernate
> powered
> > version) work on the same schema as dao-hib does?
> > This way we could migrate all current hibernate users to JPA in future
> and
> > finally drop hib-dao. I believe there are not much current OpenJPA users,
> so
> > we can modify this schema. On the other hand, there's a lot of dao-hib
> > users,
> > so we really want to migrate them (because of later drop for dao-hib).
> >
> > What do you think?
> >
> > --
> > Regards,
> > Rafał Rusin
> > http://rrusin.blogspot.com
> >
>
>
>
> --
> Cheers,
> Jeff Yu
>
> ----------------
> blog: http://jeff.familyyu.net
>
--
Milinda Pathirage
Technical Lead & Product Manager WSO2 BPS; http://wso2.org/bps
WSO2 Inc.; http://wso2.com
E-mail: milinda@wso2.com, milinda.pathirage@gmail.com
Web: http://mpathirage.com
Blog: http://blog.mpathirage.com
Re: Changing roadmap for JPA refactoring
Posted by Jeff Yu <je...@gmail.com>.
I think we shouldn't expect to use the schema as same as dao-hib at this
stage, as I believe there would still some minor changes in the JPA Dao. And
I think it should be acceptable to have little update on the schema change
as long as we specify them out and provide some simple migration utility.
With regard to the JPA 2.0, I am thinking about that whether we can make ODE
run against both JPA 1.0 and JPA 2.0 container. I believe we have many users
running against JPA 1.0 container, if we upgrade it to JPA 2.0, they have to
upgrade their JPA container. So it would be best that we say adding some
jars, it would support JPA 2.0, otherwise, it is for JPA 1.0 by default.
what do you think?
For the jpa change that I did now, I will try to commit them in after
axis2-war module test part is enabled and checked in.
Regard
Jeff
On Fri, Jun 11, 2010 at 1:32 AM, Aaron Anderson <ni...@yahoo.com>wrote:
> HI Rafal,
>
> I have attached the generated derby DDL scripts for the hibernate DAO
> (derby-hib.sql) and JPA DAO (derby.sql). They are very similar and it
> shouldn't be much of a problem to make the JPA entities map to the hibernate
> schema. It is probably best that there is one static and supported DB schema
> anyway.
>
> While addressing the JPA changes we should also consider upgrading to JPA
> 2.0. There are only a few features that would simplify the JPA code but if
> there are not that many current ODE JPA users it would be best to start off
> with the latest version and avoid future versioning conflicts.
>
> Regards,
>
> Aaron
>
> *From:* Rafal Rusin <ra...@intalio.com>
> *To:* Jeff Yu <je...@gmail.com>; Aaron Anderson <
> nickmalthus@yahoo.com>
> *Cc:* dev@ode.apache.org
> *Sent:* Thu, June 10, 2010 9:01:00 AM
> *Subject:* Changing roadmap for JPA refactoring
>
> Hello,
>
> is this possible (and how much effort it is) to make JPA (hibernate powered
> version) work on the same schema as dao-hib does?
> This way we could migrate all current hibernate users to JPA in future and
> finally drop hib-dao. I believe there are not much current OpenJPA users, so
> we can modify this schema. On the other hand, there's a lot of dao-hib
> users,
> so we really want to migrate them (because of later drop for dao-hib).
>
> What do you think?
>
> --
> Regards,
> Rafał Rusin
> http://rrusin.blogspot.com
>
--
Cheers,
Jeff Yu
----------------
blog: http://jeff.familyyu.net
Re: Changing roadmap for JPA refactoring
Posted by Rafal Rusin <ra...@intalio.com>.
Great.
OK, we can plan upgrade to JPA 2.0 and synchronizing schemas as soon as
current work is committed into trunk.
On Thu, Jun 10, 2010 at 5:32 PM, Aaron Anderson <ni...@yahoo.com>wrote:
> HI Rafal,
>
> I have attached the generated derby DDL scripts for the hibernate DAO
> (derby-hib.sql) and JPA DAO (derby.sql). They are very similar and it
> shouldn't be much of a problem to make the JPA entities map to the hibernate
> schema. It is probably best that there is one static and supported DB schema
> anyway.
>
> While addressing the JPA changes we should also consider upgrading to JPA
> 2.0. There are only a few features that would simplify the JPA code but if
> there are not that many current ODE JPA users it would be best to start off
> with the latest version and avoid future versioning conflicts.
>
> Regards,
>
> Aaron
>
> *From:* Rafal Rusin <ra...@intalio.com>
> *To:* Jeff Yu <je...@gmail.com>; Aaron Anderson <
> nickmalthus@yahoo.com>
> *Cc:* dev@ode.apache.org
> *Sent:* Thu, June 10, 2010 9:01:00 AM
> *Subject:* Changing roadmap for JPA refactoring
>
> Hello,
>
> is this possible (and how much effort it is) to make JPA (hibernate powered
> version) work on the same schema as dao-hib does?
> This way we could migrate all current hibernate users to JPA in future and
> finally drop hib-dao. I believe there are not much current OpenJPA users, so
> we can modify this schema. On the other hand, there's a lot of dao-hib
> users,
> so we really want to migrate them (because of later drop for dao-hib).
>
> What do you think?
>
> --
> Regards,
> Rafał Rusin
> http://rrusin.blogspot.com
>
--
Regards,
Rafał Rusin
http://rrusin.blogspot.com
Re: Changing roadmap for JPA refactoring
Posted by Aaron Anderson <ni...@yahoo.com>.
HI Rafal,
I have attached the generated derby DDL scripts for the hibernate DAO (derby-hib.sql) and JPA DAO (derby.sql). They are very similar and it shouldn't be much of a problem to make the JPA entities map to the hibernate schema. It is probably best that there is one static and supported DB schema anyway.
While addressing the JPA changes we should also consider upgrading to JPA 2.0. There are only a few features that would simplify the JPA code but if there are not that many current ODE JPA users it would be best to start off with the latest version and avoid future versioning conflicts.
Regards,
Aaron
From: Rafal Rusin <ra...@intalio.com>
To: Jeff Yu <je...@gmail.com>; Aaron Anderson <ni...@yahoo.com>
Cc: dev@ode.apache.org
Sent: Thu, June 10, 2010 9:01:00 AM
Subject: Changing roadmap for JPA refactoring
Hello,
is this possible (and how much effort it is) to make JPA (hibernate powered version) work on the same schema as dao-hib does?
This way we could migrate all current hibernate users to JPA in future and finally drop hib-dao. I believe there are not much current OpenJPA users, so we can modify this schema. On the other hand, there's a lot of dao-hib users,
so we really want to migrate them (because of later drop for dao-hib).
What do you think?
--
Regards,
Rafał Rusin
http://rrusin.blogspot.com