Hi Bill,
I don't know if I qualify as OJB guru, but I have some thoughts here.
From a "java" point of view it would be easy to identify objects on a
.equals() and .hashCode() basis.
But OJB must also maintain object identity accross several JVMs and one
or more RDBMS.
IMO there is no other way t
Hi all.
I hope this post is not to long to read.
I am working with OJB for several months now,
and although I am quite happy with its existance,
I still have that nagging feeling that I am doing
things wrong :->. Or that things that seem strange are
simply caused by my own misunderstandin
> If you want that level of control, why don't you create an object for
> your indirection table?
Because I like the conceptual idea of non-decomposed relations as implemented in OJB.
I mean, when you have designed your high-level domain objects model, you do not
think about these "relationtabl
> If you want that level of control, why don't you create an object for
> your indirection table?
Because I like the conceptual idea of non-decomposed relations as implemented in OJB.
I mean, when you have designed your high-level domain objects model, you do not
think about these "relationtabl
See http://db.apache.org/ojb/jdbc-types.html
You can use the JavaDate2SqlDate FieldConversion for this task
cheers,
Thomas
Stefan Schlösser wrote:
Hi,
when a try insert something into a HSQL DB with a timestamp I get a
java.sql.SQLException: Wrong data type: Timestamp format must be -
mm-dd h
Hi Wally,
Gelhar, Wallace J. wrote:
There was a reason for this design.
Say there is an abstract class A and a concrete class B extending A. No
say there is a B instance b with a primary key value '17'.
If we do not use the toplevel extent to define Identies it could happen
that OJB addresses th
hi david,
because there's only one having in a query. when adding having to the
criteria it would be possible to have multiple havings.
the same is also true for groupby / orderby which are currently located
at the criteria.
and it's imo not very intuitive to add a having criteria to a
where-
Cool! Just curious, can you elaborate a little as to why you felt that the
Having clause should go in query as opposed to in criteria?
-dave
-Original Message-
From: Jakob Braeuchi [mailto:[EMAIL PROTECTED]
Sent: Monday, March 10, 2003 2:43 PM
To: OJB Users List
Subject: Re: HAVING cl
hi all,
i just commited the first try to support HAVING clause.
this sample code with a having-criteria:
ReportQueryByCriteria query;
Criteria crit, having;
crit = new Criteria();
crit.addGroupBy(new String[] { "id", "name", "vorname" });
having = new Criteria();
yes. The problem I have is I have trouble reading the XDT files... it's like a
configuration file inside a configuration file inside a configuration file.
anyway, I'll package the stuff up and check it in tonight even if it doesn't work.
It's not in the mainline build, so it won't break anyt
I've never done any xdoclet api programming, but I'd be willing to help out
if you gave me a few simple pointers and examples. I have looked at the
xdoclet stuff for hibernate a little, so hopefully I could pick it up
quickly.
>From what I have understood, it is mainly defining the .xdt files. C
Hello everybody!
I am a newbie and try to implement a little application by using ojb. Now: I
get an error message when I try to run my app:
As I see, the error comes up in the ConnectionRepository.class in the
getDescriptor(PBKey pbKey) method, where the jcdMap.get(pgKey) returns a
NULL result i
Hi Wally,
I think you are right. If the developer implements .equals() and .hashCode()
and OJB keys the objects on the hashCode then there should be no reason why
we would need to travel up the hierarchy chain. It adds a bit more
complexity to the inheritance implementation on the user's side, but
Hi Armin,
Here's some more details. I'm using OJB from CVS. I just updated today.
I user ODMG api, but turn implicit locking off. Here's the behavior I see:
I have a Faculty object with a proxied collection of Trainee objects. I
have a web application, so let's say the user chooses a Trainee an
If you want that level of control, why don't you create an object for
your indirection table?
Wally
-Original Message-
From: Theo Niemeijer [mailto:[EMAIL PROTECTED]
Sent: Monday, March 10, 2003 10:59 AM
To: OJB Users List
Subject: A better way to manage m:n relations ?
Hi all.
Som
i have some xdoclet support sitting in a changelist.
I am becoming more and more busy with other stuff and haven't had time to finish it
yet.
I will be flying quite a bit near the end of this week and will try to finish it then.
maybe someone out there would like to help?
-Original Message
Hi all.
Something that still bothers me when using OJB is the way I have to
manage my non-decomposed m:n relationships.
Because the indirection tabel is not directly accessible as domain objects,
I have to fill a vector with references to the related objects,
and then do a store on the main
Bad typing morning. Of course I meant XDoclet.
|-Original Message-
|From: Ebersole, Steven [mailto:[EMAIL PROTECTED]
|Sent: Monday, March 10, 2003 10:51 AM
|To: OJB Users List (E-mail)
|Subject: Xdcolet support
|
|
|Are there currently any plans for XDcol
Are there currently any plans for XDcolet support in OJB for mapping
generation?
Steve Ebersole
IT Integration Engineer
Vignette Corporation
Office: 512.741.4195
Mobile: 512.297.5438
Visit http://www.vignette.com
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Take a looka t QueryByCriteria
Caster
- Original Message -
From: <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Monday, March 10, 2003 6:33 AM
Subject: Query builder for OJB
Hello,
Is anyone that use OJB know something about a query builder that could
create a query automatically bas
Hi,
Try this in your file "repository_user_hsql.xml":
conversion="org.apache.ojb.broker.accesslayer.conversions.JavaDate2SqlDateFi
eldConversion "
in the block.
Laurent
-Original Message-
From: Stefan Schlösser [mailto:[EMAIL PROTECTED]
Sent: Monday, March 10, 2003 16:21
To: oJB Use
> -Original Message-
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
> Sent: 10. marts 2003 16:23
> To: [EMAIL PROTECTED]
> Subject: RE: Trying to get OJB up and running (newbie)
>
>
> Hello Peter,
>
> > -Original Message-
> > From: Peter Kirk [mailto:[EMAIL PROTECTED]
>
>
Hello Peter,
> -Original Message-
> From: Peter Kirk [mailto:[EMAIL PROTECTED]
> It seems that the tutorial stuff has extra things defined in
> the xml files
> (junit tests and such?). Anyway it seemed a little confusing
> to me. I just
> wanted a dead simple first try - a hypersonic da
Hi,
when a try insert something into a HSQL DB with a timestamp I get a
java.sql.SQLException: Wrong data type: Timestamp format must be -
mm-dd hh:mm:ss.f
Swifting through the docs brought mew to the conclusion that my
timestamp is declared as a java.util.date in the object to be s
There was a reason for this design.
Say there is an abstract class A and a concrete class B extending A. No
say there is a B instance b with a primary key value '17'.
If we do not use the toplevel extent to define Identies it could happen
that OJB addresses this object as A{17} or as B{17}.
this
Hi Will,
first, which version of OJB do you use?
I'm not very familiar with the caching stuff,
but try to do my best ;-)
> I find that I'm just not understanding how the cache works, or the
> proper way to work with it.
>
> I use the ODMG api in a web application. I thought I had read here on
>
> -Original Message-
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
> Sent: 10. marts 2003 14:37
> To: [EMAIL PROTECTED]
> Subject: RE: Trying to get OJB up and running (newbie)
>
> > And here is the first part of some output I see (which comes
> > from inside the
> > open method):
Hello Peter,
> -Original Message-
> From: Peter Kirk [mailto:[EMAIL PROTECTED]
> When I call the "db.open" method I get a mass of exceptions.
> Perhaps someone
> can see where I can start looking for the problem...
this might be a known problem. (See thread: "Help : OJB, ODMG API !")
So I switched to using the ObjectCacheEmptyImpl until I understood
caching better. But *even* *then* I found that objects were not always
refreshed from the database. This was *totally* unexpected.
I finally had to put a broker.clearCache() just after opening my
transactions in order to guarant
I find that I'm just not understanding how the cache works, or the
proper way to work with it.
I use the ODMG api in a web application. I thought I had read here on
the email list that the cache was used within a transaction but that it
was cleared after the transaction ended. But I found that
Hello,
Is anyone that use OJB know something about a query builder that could create a query
automatically based on several criteria?
Thanks
Sylvain
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Hello,
I am using OJB with Sybase 11.5 ASE, JConnect 5.5.
I have a problem that might be specific to sybase, but
maybe someone can help me.
I have an application that writes some objects into the database.
When I write 30 objects, it works, but when I write 35, it fails
with the appended exceptio
Hi there
I am trying to learn how to use OJB.
At the moment I am not getting very far. Either I have not installed
something correctly, or I have not configured something correctly.
When I call the "db.open" method I get a mass of exceptions. Perhaps someone
can see where I can start looking for
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