Hi,
I would like to use sql functions such as min and max for an SQL
query.
I used the queryFactory create ( .. sql) method. This does require a
class AND a table name specified in the from clause. Why is this so ?
I would not want to specify the table name since this is something
done via the m
Hi all,
when retrieving data from a DB a sometimes don't want to fetch all
data, e.g I want
to fetch 100 rows at a time. E.g. when I allow a user to page through
a ton of results I would like to only fetch the next page.
I would therefore need some Criteria to say fetch rows from n to m
only.
I whole-heartedly agree. Thanks for responding so quickly, and thanks for
correcting this. Thanks to you too Shannon for the great suggestion.
--
Jason
- Original Message -
From: "Armin Waibel" <[EMAIL PROTECTED]>
To: "OJB Users List" <[EMAIL PROTECTED]>
Sent: Monday, February 10, 2003
- Original Message -
From: "Shannon Ewing" <[EMAIL PROTECTED]>
To: "'OJB Users List'" <[EMAIL PROTECTED]>
Sent: Monday, February 10, 2003 11:14 PM
Subject: RE: PBKey and OJB 0.9.9
> Are you saying that if the connection is not "default" then the user
and
> password must be passed in desp
Are you saying that if the connection is not "default" then the user and
password must be passed in despite the fact that the user and password is
defined in the jdbc-connection-descriptor? This does not make since. The
only difference should be the connection being flagged as default which
would b
Hi Jason,
sorry for the hassle, but the new release is more strict in handling
different users. Thus OJB try to find a connection without user and
password,
because both fields were null (new PBKey("mydb")).
If you only use
one database per application and you set the default-connection
attribute
Hey Jason,
How did you get it to work with Postgres? I tried in vain a few times,
even with the 0.9.9 rev. Which postgres driver are you using? Tried
with the JDBC 3.0 driver that comes with 7.3
R
On Monday, Feb 10, 2003, at 16:24 US/Eastern, Jason McKerr wrote:
I dunno what the problem is.
I dunno what the problem is. I've used the reverse tool successfully on
oracle and Postgres. Maybe it's not picking up relationships because
MySQL doesn't support RI?
-Jason
On Mon, 2003-02-10 at 13:02, Jeremy wrote:
> OK, now that I know the new version supports MySQL and now that I know
> th
Jeremy,
I tried reverse-db with various DBs, and finally gave up on it. By the
time you try to figure out how to do things, chances are you've already
mapped the DB manually.
it's a shame it doesn't really work with DBs like SQL Server, My SQL,
and Postgresql. It would in fact cut down a lot
Hye,
I'm a newbie in OJB, but I would like to know if anyone has already used OJB in real
production environments. Was it sucessfull? Good performance? Scalability?
Thanks,
Nuno
-
Busca Yahoo!
O serviço de busca mais completo da Internet. O que você pensar o Y
OK, now that I know the new version supports MySQL and now that I know
that the schema with a MySQL DB would always be represented as empty. I
still am not getting what I expect to happen. I connect to my db
server, read the database I want to generate classes and mapping for,
then save xml.
I just upgraded to .9.9 and started to encounter a conversion bug. If a
field is set as a primary key, the conversion routines are not executed. I
added a printline to
"org.apache.ojb.broker.accesslayer.conversions.JavaDate2SqlTimestampFieldCon
version"
Whenever primarykey=false, the statement get
Hi,
I recently reconfigured our application to use the new 0.9.9 release.
Previously we were using 0.9.8. We are using the PersistenceBroker API.
After reconfiguring our repository.xml file to use the new jcd-alias
attribute on the connection descriptor, my connection descriptor is as
follows:
Hi,
Since my last post i have set the logLevel for just about everything to
DEBUG. After doing this and running the program again, i noticed none
of the 'UPDATE' sql statements were getting generated. Does any one
have an idea of what area of the ojb source i should look into for this?
-chri
Why do I have to open a new database everytime I need to begin a transaction
?
I have to :
[CODE]
Database db = new Database();
db.open("OJB/repository.xml", Database.OPEN_READ_WRITE);
Transaction tx = _odmg.newTransaction();
tx.begin();
[/CODE]
How does the Broker do the association of tx with d
In an email from Thomas Mahler:
"It is also possible to run the ODMG transaction manager in distributed
mode. You just have to configure usage of the Persistent Lock Manager in
OJB.properties."
The message thread on the mailing list is: configuring OJB in a cluster
Norman Jarvis
On Mon, 10 Feb
hi bill,
i'll hava a look at it.
jakob
V B Skrypnyk wrote:
Hello,
I woner if it would be difficult to provide a mechanism to specify a custom **collection** proxy in the instead of the default provided CollectionProxy or ListProxy (or at least be able to change the default type in the OJB.
Hi Fernando,
- Original Message -
From: "Fernando" <[EMAIL PROTECTED]>
To: "OJB User List (E-mail)" <[EMAIL PROTECTED]>
Sent: Monday, February 10, 2003 6:19 PM
Subject: Does OJB supports clustering in an EJB container?
> Hello.
>
> I would like to know if OJB supports clustering in an EJ
Hi,
- Original Message -
From: <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Monday, February 10, 2003 2:23 PM
Subject: tutorial1 does not work - repository.xml
Hello,
a colleque of mine just downloaded 0.9.9.
Since last christmas, the file test/org/apache/repository.xml
does not im
Hello,
First off the link to subscribe to this mailing list is incorrect on the
website, unless i was doing it wrong. The link has
[EMAIL PROTECTED], however to subscribe i had to us
[EMAIL PROTECTED] Might need to be fixed.
I am having a problem with my objects getting persisted in the data
Hi Olli,
From what I remember, if you define your primary key field(s) to be
NON-primitive (e.g. Integer instead of int) OJB can correctly set the proxy
reference to null if the primary key field was null (maybe also add
refresh="true" in the reference descriptor but I'm not sure since it's been
Hello.
I would like to know if OJB supports clustering in an EJB container. That
is, I want to use OJB from inside sessions beans running in a clustered
enviro. I want to use OJB cache, and I'm worried about when a session bean
updates the datastore.
The question can be illustrated with this:
1.
Hej Armin,
thank you for your answer.
> I could kick out the log statement if this
> solve your problem?
That would be an improvement, but not satisfactory:
throwing and catching exceptions is costly.
A better solution would be an API method or some other defined
way to tell whether the proxy w
Hello,
a colleque of mine just downloaded 0.9.9.
Since last christmas, the file test/org/apache/repository.xml
does not import repository_user.xml any more.
Consequently, tutorial1 does not work.
Is that intended?
In order to correct this, the line
include &user
must be uncommented a
Hi Oliver,
think there is no need to log this exception,
re-throw it will be enough.
I could kick out the log statement if this
solve your problem?
regards,
Armin
- Original Message -
From: <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Monday, February 10, 2003 11:47 AM
Subject: RE:
Hello,
> I am still wondering how to use proxies appropriately.
> Someone else must have done this before.
I seem to be the only one interested in this,
but nevertheless I would like to say that I found
another problem. see below.
>
> > -Original Message-
> > >In short: Is is intende
Hello Armin,
> -Original Message-
> From: Armin Waibel [mailto:[EMAIL PROTECTED]]
>
> Hi again,
>
> Oliver wrote:
> > I want to build an application-server-like
> > thing that allows several clients to connect to the same
> > database.
>
> Hope I catch the sentence of this, you got
> pr
Hi again,
Oliver wrote:
> I want to build an application-server-like
> thing that allows several clients to connect to the same
> database.
Hope I catch the sentence of this, you got
problems using ODMG with several clients
although all clients do a
Implementation odmg = OJB.getInstance();
call?
Hello Armin,
> -Original Message-
> From: Armin Waibel [mailto:[EMAIL PROTECTED]]
> which version do you use?
> I think >0.94 OJB isn' a singleton.
current cvs HEAD:
/**
* private Constructor: use static factory method
* getInstance() to obtain an instance
*/
prot
Hi Oliver,
which version do you use?
I think >0.94 OJB isn' a singleton.
regards,
Armin
/**
* Return new instance of the {@link org.odmg.Implementation} class.
*/
public static Implementation getInstance()
{
OJB implementation = new OJB();
implementation.setConfigurato
Hello,
I have a question and a remark.
Q: Why is odmg.OJB a singleton? Am I going
to run into problems if I use two instances of OJB?
R: Since the constructor of OJB is protected, I can easily
bypass the singleton constraint by
firstOdmg = OJB.getInstance();
secondOdmg = new OJB() {}.g
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