you should use the validationQuery attribute on the jdbc-connection
descriptor. the validation query will be executed to check if a
connection is still alive before using a connection.
cheers,
Thomas
Peter Gaus wrote:
Hi all,
we are using ODMG and have a strange problem:
When we start our
Hi Marcus,
Marcus Breese wrote:
It seems that I'm having problems posting to the list. At any rate...
It seems you are not subscribed to the list. for post of nun-subscribed
user a manual affirmation by the list maintainer is required. As I was
travelling yesterday, there was some delay for
Hello,
I will use OJB in a web application running on Tomcat 4.1.24 using JDK
1.4.1 on a Win2K box.
After installing OJB 1.0.rc3, the check bin\build junit runs properly.
The tutorial1 works fine also.
Now, i create the ojb-servlet webapp and deploy it to tomcat webapps.
Tomcat greater 4.1.10
Hi,
Caused by: org.apache.ojb.broker.metadata.MetadataException: Could not
read
repository class descriptor data, using repository: repository.xml:
Error
creating PersistentField:
de.arvatosystems.monitoring.business.vo.CoreVO,
entryID
seems the repository file was found, but maybe it's
thx Thomas
--Alen
- Original Message -
From: Thomas Mahler [EMAIL PROTECTED]
To: OJB Users List [EMAIL PROTECTED]
Sent: Thursday, June 26, 2003 7:57 AM
Subject: Re: ToDo list very empty
Hi ALen,
here is a list that is not that empty:
http://scarab.werken.com/scarab/issues/
Joerg Lensing schrieb:
hi armin,
i think my problem is, that LocalTxManager.getCurrentTransaction()
doesn't succed, because the
transaction is registred to different thread
(tx_table.get(Thread.currentThread())---) . I'm using struts
and the transaction is saved to the session. when the
yep I think so.
(We don't have a test case for 'join()'.
Please let me know if you detect side effects)
regards,
Armin
- Original Message -
From: Joerg Lensing [EMAIL PROTECTED]
To: OJB Users List [EMAIL PROTECTED]
Sent: Thursday, June 26, 2003 8:54 AM
Subject: Re: abort transaction
Hello Jim,
but it seems to use the write file because otherwise it wouldn't have found
the declaration of the CoreVO class. Or does this indicate that can not find
the class CoreVFo? But I would then expect a NoClassDefFoundError.
Other suggestions?
Julia
-Ursprüngliche Nachricht-
Von:
Hi Phil,
- exhausted DataSource pool (db-connection pool, jboss)?
I use default settings for the OracleDS, should this be changed in
oracle-service.xml?
I'm not a database guy, but on second thoughts I think this
can't be the problem (missing exhausted/timeout exception).
On the dev
Hi Armin,
Thanks for your reply.
It is basically like this. I have two users who logged
on to my application and working on that parallely
that means two different PB instances and contexts.
It happened that both of them hit the same query at
the same time and we got this problem.
Is there any
Hi again,
The file is not corrupted. I validated it against the dtd with XML Spy
and
that works fine!
ok, but
Caused by: org.apache.ojb.broker.metadata.MetadataException: Error
creating
PersistentField: de.arvatosystems.monitoring.business.vo.CoreVO,
entryID
at
Hi Armin,
sure I can post it. The Declaration is right at the beginning of the
repository_user.xml:
class-descriptor class=de.arvatosystems.monitoring.business.vo.CoreVO
table=COREVO
extent-class
class-ref=de.arvatosystems.monitoring.business.vo.CoreRpcVO/
extent-class
Hi,
really strange!
I agree, your declaration is ok.
When using OJB standalone, do you get the same
exception when calling
'Implementation odmg = factory.getInstance()' ?
regards,
Armin
- Original Message -
From: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Thursday, June 26, 2003 9:38
Hello Armin,
I'm getting behind the problems!! But still I think it is strange! I wasn't
strict enough with my naming conventions. Some class attributes started with
a capital letter. Also it matched my speeling min the repository file, OJB
wasn't able the create the persistent filed. This seems
Hi Thomas,
Thanks for your fast response and your advice.
Our problem is solved.
I have only two further questions:
1) Why does OJB a connection loss with the throw of an
StackOverflowError
(even if we you the validationQuery),
couldn't there be another exception?
2) Does an addtitional
Can anyone show me how to deploy db-ojb-1.0.rc3.tgz on windows tomcat4.1.4?
I was using the previous version and didn't notice this latest version.
Thanks in advance.
Wai Kit.
mail2web - Check your email from the web at
Hello,
-Original Message-
From: Joerg Lensing [mailto:[EMAIL PROTECTED]
Sent: Thursday, June 26, 2003 10:12 AM
To: OJB Users List
Subject: mapping
hello,
i have to map several fields which can have a limited number
of values.
e.g. day of week = mon,tue, wed. Because of
[EMAIL PROTECTED] schrieb:
or maybe BYTE?
yes, this would be ok took,
we have the same situation.
We use the type-safe enum pattern in our application,
i.e., a class DayOfWeek with a private constructor
and seven static fields of type DayOfWeek, namely MONDAY,
TUESDAY and so on.
Then we
Hi,
update works perfectly well in my application for small modification, says only one
setter.
Now I've got a big big form (it's an eight step form). I stored its values in a
session during all the time.
I trace the value for a specific field, this value is right to the end.
But when I call
Hello,
-Original Message-
From: Joerg Lensing [mailto:[EMAIL PROTECTED]
We use the type-safe enum pattern in our application,
Then we implement a class
DayOfWeekToIntConversion implements
org.apache.ojb.broker.accesslayer.conversions.FieldConversion
i thought about this
I found my mistake.
I forgot to set the Id to force an update of the object.
Christophe
Message du 26/06/03 10:49
De : cmarcourt [EMAIL PROTECTED]
A : [EMAIL PROTECTED]
Copie à :
Objet : Am I missing something for the update
Hi,
update works perfectly well in my application for small
hi Joerg,
http://db.apache.org/ojb/repository.html#attribute for reference.
You can use this tag for user defined attrbites that you want to add to your
field-, reference, collection and class-decsriptors.
This allows you to keep special information within the DescriptorRepository.
For instance
Joerg --
The attribute element allows you to add any sort of attribute without having to first
modify the dtd. They allow users to implement enhancements that shouldn't be part of
the core ojb api. I use them extensively on my current project to allow me to use
Oracle packages to handle all
Hello,
I'm using JBoss 3.0.6 and I have a web application running that uses OJB
rc3. I'm trying to insert an object but I'm not able to get the current
transaction:
Transaction tx = odmg.currentTransaction(); /* here I get the crash */
tx.lock(object, Transaction.WRITE);
tx.commit();
The ODMG
Hi! In my M:N testing work, I've discovered that class-descriptor now works
ONLY for ManageableCollections now.
This problem is caused by
private ManageableCollection getCollectionByQuery(Class collectionClass,
Class itemClass, Query query)
...
result =
Well, not really. Your code looks like it's examining the database to find
the right ClassDescriptor, which I don't really need to do. I'm looking
for a way to override readObjectFromRow, so that I can simply return an
object of the correct class. All the different classes come from the same
Hi,
in your configuration OJB needs a JTA transaction
to synchronize with this a internal tx.
Try to use UserTransaction
UserTransaction utx = lookup..
utx.begin()
Transaction tx = odmg.currentTransaction(); /* here I get the crash */
tx.lock(object, Transaction.WRITE);
utx.commit();
or
In ODMG, I have a 1:1 relationship between object A and object B. I retrieve object A
using PB. I proceed to make a change to object B that was materialized along with
object A. I then pass object A to a method that contains the code below, update(A).
In rc3 object B's changes were made
Check out the FieldConversion interface. You can define your own FieldConversion that
takes the Java representation (a String) and turns it into the database representation
(a number) when rows are saved and does the reverse when they're read in. You then
just register that FieldConversion
hello lance and oliver,
you convinced me :-)
joerg
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
(this is a real long mail, but I've made a long research. The first part is
the reason I started to research, the second is explain why this occur. The
third is a suggestion of how can we correct).
FIRST PART:
Ok. To avoid the problem related to OJB always using RemovalAwareCollection,
I put my
On Thu, Jun 26, 2003 at 10:05:04AM +0200, [EMAIL PROTECTED] wrote:
Hello Armin,
I'm getting behind the problems!! But still I think it is strange! I wasn't
strict enough with my naming conventions. Some class attributes started with
a capital letter. Also it matched my speeling min the
How about this,
Take a look at the method
protected ClassDescriptor selectClassDescriptor(Map row) throws
PersistenceBrokerException
The row is basically a resultset that you of the table. Just pull your
column that represents the correct class type and used that to indicate
which object
AH... That was the context I was missing for your example to make sense to
me...
|-+---
| | Jim Shingler |
| | [EMAIL PROTECTED]|
| | et |
| | |
| |
hi,
and now i should guess which one ?
jakob
Kwok Peng Tuck wrote:
I get a sql exception when trying to run bin\build junit.
I'm using version 7.3 of sapdb. Did you ask the driver to us oracle
mode ?
Jakob Braeuchi wrote:
hi,
i use sapdb to run the testcases.
btw what's the problem ?
David,
Here is the RowReader that I use for this. It's an abstract class; a subclass
to handle a specific table would have code like this:
protected String getDiscriminatorColumn() {
return KeyColumn;
}
protected Map getClassMappings() {
if (sClassMap == null) {
I am adding optimistic locking to my database, using integer version fields
in each table.
I notice that it does not seem to work with tables implementing M:N
relationships
(I am using the decomposed style). I get this error :
com.jnetdirect.jsql.w: Cannot insert the value NULL into column
Gerhard Kreutzer wrote:
Hello,
I will use OJB in a web application running on Tomcat 4.1.24 using JDK
1.4.1 on a Win2K box.
Here are some additional information.
After booting Tomcat and calling the ojb TestServlet the first time,
ithe following Exception will be thrown:
Are y using the package commons-lang-1.0-mod.jar from jakarta commons?
[ ]´s
- Original Message -
From: Gerhard Kreutzer [EMAIL PROTECTED]
To: OJB Users List [EMAIL PROTECTED]
Sent: Thursday, June 26, 2003 3:43 PM
Subject: Re: ojb-servlet WebApp on Tomcat
Gerhard Kreutzer wrote:
Hi everyone,
I've been trying to find a way to have a sorted list where I can do a
get method on the key, right now I'm using to lists, one that I have
implemented based on the java SortedMap list and a vector, then when OJB
uses the setList method I go and add all the elements to the sorted map,
Hi,
Saman Ghodsian wrote:
Hi everyone,
I've been trying to find a way to have a sorted list where I can do a
get method on the key, right now I'm using to lists, one that I have
implemented based on the java SortedMap list and a vector, then when OJB
uses the setList method I go and add all the
Saman Ghodsian
CTO
Middle Earth Technologies Ltd.
www.metca.com
Cell (604)-839-7791
Vancouver, BC
Canada
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Sent: Thursday, June 26, 2003 12:34 PM
To: OJB Users List
Subject: Re: Sorted list
Hi,
Saman
I don't think so.
First of all, OJB is always using RemovalAwareCollection if I don't specify
collection-class (I don't know why).
Since RemovalAwareCollection has a call to afterStore, the object is always
removed. I'm working a months with this problem, and trying to fix it. But
only with
hi edson,
i changed the testcases. now we have
auto-delete ON RemovalAware (ok)
auto-delete ON not RemovalAware (fail)
auto-delete OFF RemovalAware (fail)
auto-delete OFF not RemovalAware (ok)
i could not find col.afterStore() when you check cascadeDelete ?
jakob
Edson Carlos Ericksson
Hi Edson,
the private Method you refer to is expected to return a
ManageableCollection. thus it's required to do this cast.
I don't see how this could be avoided.
The method
private ManageableCollection getCollectionByQuery(Class collectionClass,
Class itemClass, Query query)
is called by
hi michael,
try using addSql:
Query query;
Criteria crit;
crit = new Criteria();
crit.addEqualTo(boss, new Boolean(true));
crit.addSql(upper( name) like '%ER');
query = new QueryByCriteria(Person.class, crit);
hi michael,
sorry, adding free form sql to a query is not supported.
please ignore my previous post .
jakob
Michael Schulze wrote:
Hello,
I use OJB with the PB API and DB2.
I want to add FETCH x ROWS ONLY to a query to limit the number of rows
returned (I know i could do this with
And how are these two things configured?
|-+---
| | Matthew Baird |
| | [EMAIL PROTECTED]|
| | otiva.com |
| | |
| | 06/26/2003 03:07|
| |
That's a good question :)
right now, batch enablement is the same as with the current JDBC connector descriptor
way of doing thing:
jdbc-connection-descriptor
jcd-alias=default
default-connection=true
platform=Oracle9i
I am using ojb-0.9.7 ODMG API exclusively in my multi-threaded application.
In my data model I have a very straight forward 1:M association between
class A(1) and class B(M). The application runs fine under single thread
configuration, but occasionally the application fails to behave properly
when
Hi Jakob,
Jakob Braeuchi wrote:
hi thomas,
so my testcases are wrong as well :( (it's probably too hot here
:-)
to clarify this issue:
- when the collection IS removal aware the n side is ALWAYS deleted when
removed from the collection (not matter of the auto-xxx settings).
- when the
Yes, Jakob gets the point.
As far as I understood, if I don't specify the collection-class, OJB will
use RemovalAwareCollection.
Being as is, when I remove an object from the intermediary collection, the N
object should be deleted from the N table when we store the M object only
when auto-delete
well that's the beauty of the Platform design. They just work! No need to do anything
other than set your platform to Oracle9i
I promise I will get around to documenting at some point.
m
-Original Message-
From: Thomas Mahler [mailto:[EMAIL PROTECTED]
Sent: Thursday, June 26, 2003 2:08
Hello,
I'm new to OJB. Can anybody explain to me the purpose of refresh attribute
for reference-descriptor?
All I found is: The refresh attribute can be set to true to force OJB to
refresh object references on instance loading. ...
The second - I don't understand why this attribute by default is
Hi
This is one of those not sure how to describe the problem problem *grin*
I have a set of tests in a TestCase that were displaying unusual behaviour.
One that failed when the entire case was run did not fail when executed
solely on its own.
So I changed the order and have found the following
That's the something happened that's so severe that you should call db2 service
error.
it appears to be happening during the execution of a batch. You could try turning off
batch, although I think you may have to do that in code and recompile.
m
-Original Message-
From: Shane Mingins
Yes I have seen comments about it being a call IBM message :-)
When referring to batch do you mean the batch-mode property in my JDBC
connection descriptor for OJB?
Thanks
Shane
-Original Message-
From: Matthew Baird [mailto:[EMAIL PROTECTED]
Sent: Friday, 27 June 2003 10:33 a.m.
To:
- Original Message -
From: Matthew Baird [EMAIL PROTECTED]
To: OJB Users List [EMAIL PROTECTED]
Sent: Friday, June 27, 2003 12:32 AM
Subject: RE: DB2 Error - Can Anybody Help?
That's the something happened that's so severe that you should call db2
service error.
it appears to be
Matthew Armin
Thanks, I changed the code, and it all goes :-)
Cheers
Shane
-Original Message-
From: Armin Waibel [mailto:[EMAIL PROTECTED]
Sent: Friday, 27 June 2003 10:43 a.m.
To: OJB Users List
Subject: Re: DB2 Error - Can Anybody Help?
- Original Message -
From: Matthew
Hi,
It's OK now. I wasn't keeping all my OJB.properties files well
synchronized. My LoggerClass setting was
LoggerClass=org.apache.ojb.broker.util.logging.PoorMansLoggerImpl
rather than
LoggerClass=org.apache.ojb.broker.util.logging.Log4jLoggerImpl
I have different OJB.properties file for
Cesar wrote:
Are y using the package commons-lang-1.0-mod.jar from jakarta commons?
No
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