objectbridge-jdo-dev

[Objectbridge-jdo-dev] Hi from new list subscriber

[Michael V. <ja...@vo...>]

Hello objectbridge-jdo-dev'ers!

just subscribed to this list, and thought I would drop a note.  Got
mostly attracted by the
http://jakarta.apache.org/ojb/jdo/jdo-proposal.html page....  So how
are things, in regards to what's described there?

Even though I have gone through a (probably somewhat simpler than OJB)
persistence layer developed in-house; I am not sure if I can put in
significant development time myself at this point, simply because of
the time, other than little helper code e.g. some .jdo XML
unmarshalling, other helpers and tools, or something like that.

However, I have been involved with JDO since relatively early on, am
quite familiar with the spec. and API, and believe to have some notion
of the current landscape in terms of existing implementations and
stuff, and would be happy in assisting this project this way, if I
can.  What do you need most?   It may be a bit early for OJB JDO
testing? ;-)


May I ask some questions that popped through my mind?

* How widely used is the existing ODMG API-based OJB?
* How mature is it?  Used... in...

* SF vs. Jakarta... the jdo-proposal.html page on Jakarta still
encourages to subscribe to
obj...@li...... but there seem to be a
Jakarta hosted list(s) as well, so am I on the wrong mailing list
here?

* For general curiosity: How does one (OBJ) get onto Jakarta, anyway?

* Noticed "JDO prototype and sample application." for 0.9... so there
is working JDO-API compliant code out there, already?  Just curious,
because the jdo-proposal.html seems to propose a refactoring for a
2.0... far out in time?  Very roughly, what sort of timeframe do
people have in mind here?

Regards,
Michael

Re: [Objectbridge-jdo-dev] Hi from new list subscriber

[Thomas M. <tho...@ho...>]

Hi Michael,

Michael Vorburger wrote:
> Hello objectbridge-jdo-dev'ers!
> 
> just subscribed to this list, and thought I would drop a note.  Got
> mostly attracted by the
> http://jakarta.apache.org/ojb/jdo/jdo-proposal.html page....  So how
> are things, in regards to what's described there?
> 

We followed the general idea of this proposal.
There is now a rapid JDO prototype, that demonstrate some basic features.
Currently we are discussing the details of the OTM design. Matthew Baird 
assembled a document that will be the base for of our next 
implementation steps:
http://archives.apache.org/eyebrowse/ReadMsg?listName=oj...@ja...&msgNo=289



> Even though I have gone through a (probably somewhat simpler than OJB)
> persistence layer developed in-house; I am not sure if I can put in
> significant development time myself at this point, simply because of
> the time, other than little helper code e.g. some .jdo XML
> unmarshalling, other helpers and tools, or something like that.
> 
> However, I have been involved with JDO since relatively early on, am
> quite familiar with the spec. and API, and believe to have some notion
> of the current landscape in terms of existing implementations and
> stuff, and would be happy in assisting this project this way, if I
> can.  What do you need most?   It may be a bit early for OJB JDO
> testing? ;-)
>

Right, the prototype won't pass the JDO TCK.

> 
> May I ask some questions that popped through my mind?
> 
> * How widely used is the existing ODMG API-based OJB?

I don't have any exact figures. But I know of several large projects 
that use it in production. There are many ex-TopLink customers that use 
OJB...

> * How mature is it?  Used... in...
> 

There have only been minor changes to the ODMG layer since the OJB 0.5 
release. Apart from some issues with the OQL parser I don't think there 
are any problems with it. (The OQL parser is based on the official oql.g 
grammar from the ODMG website. This grammar is not perfect wrt. to the 
ODMG spec....)

> * SF vs. Jakarta... the jdo-proposal.html page on Jakarta still
> encourages to subscribe to
> obj...@li...... but there seem to be a
> Jakarta hosted list(s) as well, so am I on the wrong mailing list
> here?

Right, better use the Jakarta lists. the mentioning of the old list is a 
"bug"...

> 
> * For general curiosity: How does one (OBJ) get onto Jakarta, anyway?
> 

Oh, it works according to the Hollywood principle: "Don't call us, we 
call you". :-)
I have been contacted by Jason van Zyl. He asked me if we'd like to 
Jakarta...

> * Noticed "JDO prototype and sample application." for 0.9... so there
> is working JDO-API compliant code out there, already?  

Right. I would not claim it to be JDO compliant. But it allows to run 
some simple examples...

> Just curious,
> because the jdo-proposal.html seems to propose a refactoring for a
> 2.0... far out in time?  Very roughly, what sort of timeframe do
> people have in mind here?
> 

Given the current pace I think we could have a beta quality JDO system 
at the end of the year. Maybe even earlier.

cheers,
Thomas


> Regards,
> Michael
> 
> 
> 
> 
> -------------------------------------------------------
> This sf.net email is sponsored by:ThinkGeek
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> _______________________________________________
> Objectbridge-jdo-dev mailing list
> Obj...@li...
> https://lists.sourceforge.net/lists/listinfo/objectbridge-jdo-dev
> 
> 
> 

Re: [Objectbridge-jdo-dev] Hi from new list subscriber

[David G. <da...@ga...>]

I guess I've wandered onto the wrong list as well...
what is the Jakarta one?

- D

--- Thomas Mahler <tho...@ho...> wrote:
> Hi Michael,
> 
> Michael Vorburger wrote:
> > Hello objectbridge-jdo-dev'ers!
> ODMG spec....)
[...]
> 
> > * SF vs. Jakarta... the jdo-proposal.html page on
> Jakarta still
> > encourages to subscribe to
> > obj...@li...... but
> there seem to be a
> > Jakarta hosted list(s) as well, so am I on the
> wrong mailing list
> > here?
> 
> Right, better use the Jakarta lists. the mentioning
> of the old list is a 
> "bug"...
> 


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http://fifaworldcup.yahoo.com

RE: [Objectbridge-jdo-dev] Hi from new list subscriber

[Michael Vorburger-R. <mi...@vo...>]

> I guess I've wandered onto the wrong list as well...
> what is the Jakarta one?

http://jakarta.apache.org/ojb/mail-lists.html

Guys I just joined and don't mean to be ranting... but what about
rapidly closing down the sourceforge lists, calling on everybody to
subscribe to the jakarta lists, if that's what you want?  Just a
thought.



-----Original Message-----
From: obj...@li...
[mailto:obj...@li...]On Behalf Of
David Gallardo
Sent: Montag, 1. Juli 2002 20:09
To: obj...@li...
Subject: Re: [Objectbridge-jdo-dev] Hi from new list subscriber


I guess I've wandered onto the wrong list as well...
what is the Jakarta one?

- D

--- Thomas Mahler <tho...@ho...> wrote:
> Hi Michael,
>
> Michael Vorburger wrote:
> > Hello objectbridge-jdo-dev'ers!
> ODMG spec....)
[...]
>
> > * SF vs. Jakarta... the jdo-proposal.html page on
> Jakarta still
> > encourages to subscribe to
> > obj...@li...... but
> there seem to be a
> > Jakarta hosted list(s) as well, so am I on the
> wrong mailing list
> > here?
>
> Right, better use the Jakarta lists. the mentioning
> of the old list is a
> "bug"...
>


__________________________________________________
Do You Yahoo!?
Yahoo! - Official partner of 2002 FIFA World Cup
http://fifaworldcup.yahoo.com


-------------------------------------------------------
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Welcome to geek heaven.
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Re: [Objectbridge-jdo-dev] Hi from new list subscriber

[Thomas M. <tho...@ho...>]

Hi

Michael Vorburger-Rajagopalan wrote:
>>I guess I've wandered onto the wrong list as well...
>>what is the Jakarta one?
> 
> 
> http://jakarta.apache.org/ojb/mail-lists.html
> 
> Guys I just joined and don't mean to be ranting... but what about
> rapidly closing down the sourceforge lists, calling on everybody to
> subscribe to the jakarta lists, if that's what you want?  Just a
> thought.
> 

Of course we did request all subscribers to shift to the new list.
But this was before you subscribed...

> 
> 
> -----Original Message-----
> From: obj...@li...
> [mailto:obj...@li...]On Behalf Of
> David Gallardo
> Sent: Montag, 1. Juli 2002 20:09
> To: obj...@li...
> Subject: Re: [Objectbridge-jdo-dev] Hi from new list subscriber
> 
> 
> I guess I've wandered onto the wrong list as well...
> what is the Jakarta one?
> 
> - D
> 
> --- Thomas Mahler <tho...@ho...> wrote:
> 
>>Hi Michael,
>>
>>Michael Vorburger wrote:
>>
>>>Hello objectbridge-jdo-dev'ers!
>>
>>ODMG spec....)
> 
> [...]
> 
>>>* SF vs. Jakarta... the jdo-proposal.html page on
>>
>>Jakarta still
>>
>>>encourages to subscribe to
>>>obj...@li...... but
>>
>>there seem to be a
>>
>>>Jakarta hosted list(s) as well, so am I on the
>>
>>wrong mailing list
>>
>>>here?
>>
>>Right, better use the Jakarta lists. the mentioning
>>of the old list is a
>>"bug"...
>>
> 
> 
> 
> __________________________________________________
> Do You Yahoo!?
> Yahoo! - Official partner of 2002 FIFA World Cup
> http://fifaworldcup.yahoo.com
> 
> 
> -------------------------------------------------------
> This sf.net email is sponsored by:ThinkGeek
> Welcome to geek heaven.
> http://thinkgeek.com/sf
> _______________________________________________
> Objectbridge-jdo-dev mailing list
> Obj...@li...
> https://lists.sourceforge.net/lists/listinfo/objectbridge-jdo-dev
> 
> 
> 
> 
> 
> -------------------------------------------------------
> This sf.net email is sponsored by:ThinkGeek
> Welcome to geek heaven.
> http://thinkgeek.com/sf
> _______________________________________________
> Objectbridge-jdo-dev mailing list
> Obj...@li...
> https://lists.sourceforge.net/lists/listinfo/objectbridge-jdo-dev
> 
> 
>