Pooling other than what OJB provides?
-Original Message-
From: Lukas Severin [mailto:[EMAIL PROTECTED]
Sent: Thursday, June 05, 2003 6:36 AM
To: OJB Users List
Subject: How to configure OJB with Tomcat
I read the documentation about setting up OJB in a servlet. However I
couldnt find any
On Wednesday 04 June 2003 10:20, Mahler Thomas wrote:
> Hi again,
>
> correct the collection attribute should be typed as DList.
>
> the respective collecion descriptor in repository.xml could look like
> follows:
>name="myListAttribute"
> collection-class="org.apache.ojb.odmg.collections.DLi
here is the conversion class I am now using:
public class OracleFieldConversion implements FieldConversion {
public OracleFieldConversion(){
}
// Implementation of
org.apache.ojb.broker.accesslayer.conversions.FieldConversion
/**
* Describe javaToSql method here.
*
* @
I got such log...
[org.apache.ojb.broker.accesslayer.ConnectionFactoryPooledImpl] INFO: Destroy object
was called, try to close connection: [EMAIL PROTECTED]
[org.apache.ojb.broker.util.sequence.SequenceManagerHighLowImpl] INFO:
OptimisticLockException was thrown, will try again to store sequence
Hi Thomas,
Thanks for your advice.
But, addGroupBy() accepts Field (name or FieldDescriptor).
I want use group by like below, (with mysql)
---
select DATE_FORMAT(DATE, " %Y %m %d"), count(*) from A0
group by DATE_FORMAT(DATE, " %Y %m %d")
---
The type of DATE is TIMESTAMP.
Is there any way ?
Hello Armin,
OJB 1 Rc3,
I use Oracle, and I've tried both driver ( thin and oci8 ).
result the same,
when I set repository_database.xml
sounds strange! Could you give some more information.
AW> Code snip, OJB version, repository_database.xml
AW> file.
--
Best regards,
Alexander
I read the documentation about setting up OJB in a servlet. However I
couldnt find any instructions on how to configure connection pooling (eg
using jakarta-commons) together with OJB in Tomcat so that connections to
the database is pooled. Are there any synchronization issues to be careful
about ?
Hello Again :),
is it possible to use nested queries in OJB OQL ?
something like :
select distinct struct (code: c.crse_code, title: c.crse_title,
(select x
from c.offers x
where x.enrollment < 20))
from courses c
or define to classes or more in From statements?
thank you.
--
Best regards,
Sorry for my ignorance, I just did not expected any problems while
switching the databases.
with a simple FieldConversion, now all my Integer-fields also work on
Oracle.
that's for help ;-)
with best wishes Kristian
Mahler Thomas wrote:
Hi again,
-Original Message-
From: kristi
We were not able to fix it. We had to modify the OJB code to check to
see if the first field is an auto-increment field and if it was, then we
would turn Identity insert on. That requires that you make sure that if
you are going to use Identity insert that it be the first field. Not a
great fix, bu
Hi,
Maybe your repository_database.xml is wrong.
'test.' is database name.
You have to set mysql database name as below.
- dbalias="//localhost:3306/test
+ dbalias="//localhost:3306/databaseName
On Thursday 05 June 2003 23:57, Christian Pesch wrote:
> Hi Folks,
>
> I'm clueless how to switch
Did you ever solve this? I'm having the same issue with Sybase 11.9.3
identity columns.
"Peter Costa" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> I am stuck with it for right now. So I take it there is no easy way
> around this other than removing the Identities. If anyone has an
Just have a a look at the Javadocs:
http://db.apache.org/ojb/api/org/apache/ojb/broker/query/QueryByCriteria.htm
l#addOrderBy(java.lang.String)
Thomas
> -Original Message-
> From: shivaken [mailto:[EMAIL PROTECTED]
> Sent: Thursday, June 05, 2003 11:21 AM
> To: OJB Users List
> Subject: H
Hi again,
> -Original Message-
> From: kristian meier [mailto:[EMAIL PROTECTED]
> Sent: Thursday, June 05, 2003 11:54 AM
> To: OJB Users List
> Subject: Re: Possible OJB Bug with Oracle
>
>
> Hi Thomas,
>
> just to understand, if
>
> repository.xml
>
> is wrongly configured it should
Hi everyone,
i have a problem using dynamic proxies in a multiuser enviroment. Assume
that client A has a unmaterialized proxy P for the persistent object
Person. The Person got deleted by client B. When client A tries to
access the proxy P a NullPointerException will be thrown. The tests
succeed
Hi Thomas,
just to understand, if
repository.xml
is wrongly configured it shouldn't work with mysql, hsqldb as well not oracle.
basically the same file (the platform attribute changes respectivly) works fine for
mysql, hsqldb, but
not for oracle !!! all java classes are the same in each case
Hi all,
Today, I noticed that Criteria.addGroupBy is deprcated.
Then javadoc use Query#addGroupBy .
But, interface org.apache.ojb.broker.query.Query dosen't have addGroupBy
method.
What do I have to use?
-- shivaken
antshell: Ant command line front end
http://www.antshell.org
--
Hi Kristian,
For me this does not look like a OJB bug, but as a configuration problem.
If you have a java attribute of type String but have defined it as INTEGER
in the repository.xml you've got a problem!
If you want to have a String attribute converted into an Oracle Number
column you should us
Hello,
I have a class with a map type attribute. I've try to store it using object to
byte array conversion but it seems to not work.
There are no errors during the storage, but when I list rows from the table, the
corresponding column is empty whereas when debugging the converter it returns a
byt
Hi,
sounds strange! Could you give some more information.
Code snip, OJB version, repository_database.xml
file.
regards,
Armin
- Original Message -
From: "Alexander Prozor" <[EMAIL PROTECTED]>
To: "OJB Users List" <[EMAIL PROTECTED]>; "Armin Waibel"
<[EMAIL PROTECTED]>
Sent: Thursday, Ju
Hello Armin,
Ok, but I still have problem with Active connections.
Try to take example,
when I set activeconnections = 10.
I can open my page for a 3 times before server crashed ( it contains
some db call ).
when I set activeconnections = 40 I can do it for 10 times :).
and so on.
so I am think tha
Hello,
I have a Workstation class which contains the reference "wntWorkstation" to another
class WntWorkstation (there is a 1:1 relationship).
How could I delete in Workstation the reference "wntWorkstation" AND the object
referenced in WntWorksation table??
Thanks
Sylvain
Note: the mailing-
Hello,
when I yesterday switch to oracle I came across the same exception and I
investigated a bit, and
found an unexpected situation in the PlatformOracleImpl.java
in the setObjectForStatement( ) method the sqlType was Type.INTEGER
and the value was a String class
both arguments were pass
Hi,
use 'validationQuery' in your jdbc-connection-descriptor.
Then OJB do a 'real' query before a connection was returned.
This is a minor performance impact, but this should solve your
problem.
regards,
Armin
- Original Message -
From: "luke cassady-dorion" <[EMAIL PROTECTED]>
To: "'OJB
Hi,
> connections. ( I also call db.close() after each operations ).
is not necessary. Close the database only before open another.
> > Or I just call db.open(...) the first time?
yep, that's recommended
> > It's is possible to share db among the different threads?
yep!
> > Should I close som
Hello ,
I can't find answer for this question...
But I have a some strange trouble and it looks like I didn't close
connections. ( I also call db.close() after each operations ).
Should I call another finalized methods?
thank you.
> From: Mauricio CASTRO <[EMAIL PROTECTED]>
> To: [EM
I'm working with mySQL 4+ and OJB's current release. I am wondering
about the preferred method for autoincrement keys in mySQL. Almost all
of my tables have an integer ID field that autoincrements in mySQL. I
also edit the databases directly (i.e. not through OJB) through other apps.
When I use
I'm having some problems moving from 0.9.8 in the SequenceManager. I have
a polymorphic class ObservationValue_ that
has multiple . I have a primary key "valueId" which I try
to increment with the call
broker.serviceSequenceManager().getUniqueValue(field);
This call fails with a NullPointerE
Hi, I am having some misunderstandings on implementing 1,n mappings.
The mapping is this one, as follows right bellow. My doubt is in the
collectin-descriptor: What is the field that I need to reference on the
inverse-foreignkey?
This colection is a vector of EntidadeExt
I can't send the actual code. Duplicating the error in an autonomous test
may be probematic. It could be due to some mechanism (mine or ojb's)
that doesn't get repesented in the autonomous environment.
The only other alternatives I can think of at this point are to attempt working
around it with
Hi
I just wanted to reping the group on this questions
I am having trouble performing tasks with a 1-M mapping
None of my objects use the reference descritor constructs. I
constructed my 1-M exactly as the documentation
suggests but the problem that i have is that when my test attempts to
Hi Mark,
can you post a piece of code demonstrating the failure?
I'd like to verify this with a test case.
cheers,
thomas
Mark Neighbors wrote:
Hi,
I'm having problems with TransactionImpl.markDelete(Object anObject)
regarding keys to DMAP entries as well as the DMap Impl object itself.
markDelet
Hi Raymond,
Raymond Barlow wrote:
Hi all,
I'd like to get a general opinion on what is the best practise for using
database views or not. I'm currently converting a system that has a
number of views. Some of the views use other views to build up reporting
type information. I would think that
Forgive me, I know this is a really basic question, but...
I just finished reading how to set up optimistic locking.
I gather that I need to set this explicitly for each class,
and that each table needs to have a dedicated column
for this purpose (timestamp or integer). Is this correct?
Is there a
A requirement for my application is that the application can continue to
service requests even if the database connection is severed. In order to
do this, i'm putting insert requests into a queue and pushing them back
on if they fail. What i'm finding tho is that the if the db is started
and stoppe
What are the reasons for writing startup classes (ODMGFactory and PBFactory)
specific to an app server (extending jboss.ServiceMBeanSupport for JBoss,
and extending T3StartupDef for WebLogic, and xxx for WebSphere)?
Could this be achieved using JMX alone, or does the spec not meet the needs
to in
I did finally get a chance and change eager-release to true. I
just wanted to get back to you all and say I have confirmed it is
retrieving the full collection.
- Ken
Ken Dempster
Programmer Analyst
Vision Solutions, Inc.
17911 Von Karman Ave, 5th Floor
Irvine, CA 92614
UNITED STATES
I installed OJB and ran the junit tests.
Then I decided to make a test with a helloworld flavored application.
I used the great xdoclet-ojb tool (this package is findable in the OJB
CVS contrib) to generate
myapp-repository.xml and myapp-schema.xml directly from my java source
code (neat!).
B
Hi,
I'm having problems with TransactionImpl.markDelete(Object anObject)
regarding keys to DMAP entries as well as the DMap Impl object itself.
markDelete will sometimes not cause an sql DELETE for these objects at
transaction commit. However, the Entry object always get deleted.
The persistent
Hi Chuck,
to isolate your problem use default
settings for connection properties:
eager-release="false"
batch-mode="false"
useAutoCommit="1"
ignoreAutoCommitExceptions="false"
Maybe the sequence manager cause the problem.
Change the sequence manager
(e.g. SequenceManagerInMemoryImpl when running
Thanks so much Armin. Now After writing one object to the db, I get no
errros but no more objects written to the database. DEBUG tells me it is
now updating an object rather than doing a new insert even though a new
object is attempted to be written.
My repository.xml has changed to this:
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