Hi !
I've got a problem with RC5.
I use the broker api to store several objets with collections and nested
objets.
Under certain circumstances (Oracle, batch mode), i've got the following
exception thrown:
java.sql.SQLException: ORA-02291: violation de contrainte
(GNT.SYS_C00194175) d'integrite
Hi Guillaume,
Please translate the text of the exception into English and give more details
about this case. Is GNT the name of the table? What are related objects for
GNT involved into this thansaction?
And the most important question is:
Do all database constraints correspond to some
Thx to all for your answer
But it's still only workaround
Because the problem is not when the broker is not closed and the connection
release for other broker
But only when the broker is close by the gc
I need to investigate .
In fact after a few test of debug , when I apply the test case
Hi Sean,
We have a page listing reference usages and user testimonials:
http://db.apache.org/ojb/references.html
some of these projects are open source.
We also have sample apps in our contributions package. You'll find more
details on this page: http://db.apache.org/ojb/links.html#OJB
Hi Sean,
Sean Dockery wrote:
Thanks. I've downloaded it and will look at it later this weekend.
Is OpenEMed an example of a typical OJB application?
Mhh, What do you mean by typical? OJB is used in large variety of
application scenarios. (E.G. in Swing based clients, in Servlets, in EJB
Suma --
Stored procedures are only supported for data persistence operations
(insert, update or delete). Data retrieval (i.e. select) is still performed
by 'basic' sql statements.
Ron Gallagher
Atlanta, GA
[EMAIL PROTECTED]
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL
Dear OJB User Group,
I am using OJB in jboss and making an EJB connection to the server and it
seems like the client application is trying to down a server side class.
Any suggestion as to what can be the problem that cause the rmi classloader to
reference the RemovalAwareCollection.
Is
Suma --
At this point, OJB's support for stored procedures is limited to just data
persistence operations (insert, update or delete). Data retrieval (i.e.
select) is still performed by 'basic' sql statements. I am aware of no
plans at this time to extend SP support to handle data retrieval.
Hi
I posted the below question 3 days ago. Is it that new joiners are not answered OR
is my question too obvious !!! Iam completely new to OJB and trying to learn it.
Please help me.
Iam working on using store procedures using OJB. I want to call a store procedure
which selects a number
Hi Christopher,
per default OJB use a
org.apache.ojb.broker.util.collections.RemovalAwareCollection for
populating 1:n relations. Thus you need this class on client side too.
You can change this default class by setting a
'collection-class' attribute in collection-descriptor.
e.g.
The Oracle error is:
ORA-02291 integrity constraint (%s.%s) violated - parent key not found
The constraint referenced in my case is an optional foreign key
'FOREIGN KEY (ACTDATA) REFERENCES ACTIVITIES (ID)' on table PROPERTIES.
The ddl is following (i ommited all fields that i think are
Hi Suma
[EMAIL PROTECTED] wrote:
Hi
I posted the below question 3 days ago. Is it that new joiners are
not answered OR is my question too obvious !!!
Your question was answered within 6 hours by Ron Gallagher. I've also
forwarded his posting to you in case you missed it.
cheers,
thomas
Iam
In tutorial 4 I found something like:
factory = new OjbStorePMF();
Isn't this a better way to create a PersistenceManagerFactory?
Properties props = new Properties();
props.setProperty(javax.jdo.PersistenceManagerFactoryClass,
org.apache.ojb.jdori.sql.OjbStorePMF);
Hi pedro,
Pedro Salgado wrote:
In tutorial 4 I found something like:
factory = new OjbStorePMF();
Isn't this a better way to create a PersistenceManagerFactory?
Properties props = new Properties();
props.setProperty(javax.jdo.PersistenceManagerFactoryClass,
Hello,
i am using the Persistence-Broker API and a mySQL-Database. My Server-Application
holds persistent Objects in the following way:
I have a Container-Object called ProductCon, which holds n Product-Objects in a
Vector. I have made this struct persistent using
a 1:n mapping and it works
Hi Pedro,
Pedro Salgado wrote:
snip
Sure, this is much cleaner. But my code is only one line ;-)
Yes, but if I make an additional util class I can get the same effect (1
line) and abstract from the JDO implementation ;)... Maybe one more private
attribute for the pmf on usecase implementation
I've got an object model with strongly typed collections:
class A {
private BList bs;
public BList getBs();
}
class B {
...
}
class BList implements Collection {
...
}
When I store
How is this coming? It is a major headache for a project I am working
on at the moment =/
Anything I can do to help?
-Brian
On Jan 7, 2004, at 5:53 PM, Brian McCallister wrote:
I like none (default) / ojb / database the most.
I never hit the problem running against PostgreSQL, but started a
I'll try to answer your question, although I'm still somewhat new to OJB
myself.
OJB uses RemovalAwareCollection as the default implementation class for
holding the collection instance. RemovalAwareCollection implements
java.util.Collection. So, when your container class is serialized to
As has been stated a couple of times, there is no support for directly
specifying the use of a stored procedure so that OJB will use it for
data retrieval. However, I would expect that you could write the SP so
that it returns a set of OIDs which you could then use to quickly
materialize the
On Tue, 13 Jan 2004, Brian McCallister wrote:
How is this coming? It is a major headache for a project I am working
on at the moment =/
I can't fix it in the source currently in CVS as I'm nearly finished with
a major overhaul so my codebase is quite different from the one in CVS. I
plan to
Hello, Thomas.
Thanks for the link to the references page.
I have looked at some of the sample applications, but I'm not sure that
sample applications will provide the information that I'm looking for. The
problem with sample applications is that you can't be sure whether or not
how OJB is used
Philipp, this appears to be the same problem/question asked by another
posting last night. Here's the response I sent to that request:
I'll try to answer your question, although I'm still somewhat new to OJB
myself.
OJB uses RemovalAwareCollection as the default implementation class for
Hi Guilaume,
Guillaume Nodet wrote:
I've got an object model with strongly typed collections:
class A {
private BList bs;
public BList getBs();
}
class B {
...
}
class BList implements Collection {
I mean typical as in a good example of how to use OJB. I'm not concerned
with what the user interface medium happens to be; I just want some
exposure to approaches taken in the real world applications using OJB that
have been proven to be viable.
Do you have a sense of which of the ODMG or PB
The problem is the object model cannot be modified.
-Message d'origine-
De : Thomas Mahler [mailto:[EMAIL PROTECTED]
Envoye : mardi 13 janvier 2004 17:41
A : OJB Users List
Objet : Re: Problem using strongly typed collections
Hi Guilaume,
Guillaume Nodet wrote:
I've got an object
I know that it may have just been omitted from your example data model,
but do you have a
public void setBs( Collection )
method in A?
Guillaume Nodet wrote:
The problem is the object model cannot be modified.
-Message d'origine-
De : Thomas Mahler [mailto:[EMAIL PROTECTED]
Envoye :
Yes, I have one, but it cannot be used by PersistentFieldIntrospectorImpl
because the getPropertyDescriptor().getWriteMethod() returns null.
I think this is because the set accessor
public void setBs( Collection )
is not recognized as a setter for the property
public BList getBs()
Excellent, thank you!
-Brian
On Jan 13, 2004, at 11:39 AM, Thomas Dudziak wrote:
On Tue, 13 Jan 2004, Brian McCallister wrote:
How is this coming? It is a major headache for a project I am working
on at the moment =/
I can't fix it in the source currently in CVS as I'm nearly finished
with
a
All,
I noticed that the Cache Mechanism works only with the Broker API, Is it true ?
I want to use the ODMG API, is it possible somehow to use the Cache Mechanism
with this API ?
Thanxs,
Ronen Yaari
Traiana Technologies
Hello, Philippe.
Thanks for the analysis and tip about the performance of ODMG in relation
to caching objects. That is helpful.
I have a question for you about your little snippet...
PersistenceBroker broker = ((TransactionImpl) tx).getBroker();
A aDummyObject = new A();
On 13/01/2004 15:44, Thomas Mahler [EMAIL PROTECTED] wrote:
Hi Pedro,
Pedro Salgado wrote:
snip
Sure, this is much cleaner. But my code is only one line ;-)
Yes, but if I make an additional util class I can get the same effect (1
line) and abstract from the JDO implementation
On 13/01/2004 15:44, Thomas Mahler [EMAIL PROTECTED] wrote:
Hi Pedro,
Pedro Salgado wrote:
snip
Sure, this is much cleaner. But my code is only one line ;-)
Yes, but if I make an additional util class I can get the same effect (1
line) and abstract from the JDO implementation
Guillaume, I guess I know what's the bug: now only reference-descriptors are
counted as a source of constraints, and in your case I guess there is only
collection-descriptor without reference-descriptor in the inverse direction,
am I right?
I'll fix the bug tonight.
On Tuesday 13 January 2004
Hi
Ron,thomas and Larry
Thank you so much for the response. I did not receive any answers prior to todays
email and hence was my frustration.Sorry about that.
If OJB doesnt support a store procedure performing only selects, can i atleast call a
custom store procedure ?
Larry's answer:
Hi
Larry,
Thanks for the response. Will work this way.
suma
Larry V. Streepy, Jr. [EMAIL PROTECTED] wrote:
Suma, I was suggesting that you could use JDBC directly to execute the
stored procedure and retrieve the results. The use the results to feed
OJB queries to materialize the objects.
Hi,
I really strongly suggest you make a module using an ANT build file.
There are lots of docs on the netbeans site and templates in the
OpenAPIs Support module. Otherwise it will just get messier and messier
every time you try to do something.
Once you have a module, use nice netbeans-style
I am getting a NullPointerException when the execution reaches the line:
query.create(select users from users in +FlUserBO.class.getName()+
where users.identification = $1);
in the code above. Some one can tell me what's wrong?
Thanks.
Implementation impl = OJB.getInstance();
Database
Sean Dockery wrote:
Hello, Philippe.
Thanks for the analysis and tip about the performance of ODMG in relation
to caching objects. That is helpful.
I have a question for you about your little snippet...
PersistenceBroker broker = ((TransactionImpl) tx).getBroker();
A aDummyObject = new
Thomas, I tried removing the collection-class entry and it had no
effect. The only difference in the two executions is the existence of
the reference from Trait to Person. When that is in place, the
traPerOID field is not updated with the person's OID. This is smelling
more like a bug. Is
I've got a question regarding the default behavior of OJB. Given a M:N
relation which is being decomposed with a standard indirection table,
the default collection class (RemovalAwareCollection) is deleting the
target objects when they are removed from the subject. This seems
Guillaume, can you try now, with CVS version?
Thanks,
Oleg
On Tuesday 13 January 2004 12:53, Guillaume Nodet wrote:
The Oracle error is:
ORA-02291 integrity constraint (%s.%s) violated - parent key not found
The constraint referenced in my case is an optional foreign key
'FOREIGN KEY
Hi Armin,
I found Jacob's fixes and incorporated them into my local source branch,
rebuilt jars etc, and now it all works!!
Thanks Armin. Thanks Jacob.
-Raymond
Armin Waibel wrote:
Hi Raymond,
Jakob has checked in a fix. Will be included
in the upcoming 1.0 version.
regards,
Armin
Armin
Hi all,
What is the best way of storing an ordered list without using Dlist
which requires additional tables SQL lookups?
OrderBy works great if the positioning has some underlying field (eg.
Object id, name) but if the only thing specifying the position is the
list index then it doesn't work
Hi All,
What I have :
Root Object RO has:
- a collection of CO objects specified using collection-descriptor
Child Object CO has:
- a collection of CO objects specified using collection-descriptor
- a reference to a parent CO (null if the object has no CO parent)
- a reference to the RO
Hi,
how can I map two tables with each having a 1:N relation to the same table?
I always get a null pointer exception for class Person.
I have three tables:
PERSON with a 1:N relation to ACTIVITY
and
VENTURE with a 1:N relation to ACTIVITY
Table PERSON and VENTURE both references
46 matches
Mail list logo
