Ok, I've not asked yet: what version of OJB are you using?
Edson Richter
- Original Message -
From: Joerg Lensing
To: OJB Users List
Sent: Friday, September 12, 2003 12:14 PM
Subject: Re: dynamci Proxy: ClassCastException with Interfaces
Hi Edson
thanks for your reply. I'm still stuc
Hi Edson
thanks for your reply. I'm still stuck :-(
Edson Carlos Ericksson Richter wrote:
I've the two situation in my project. I have a documents table table has a
fixed structure to all types of documents, and I have different tables for
different objects, in another (a payment structure).
All t
Hi all,
some questions about proxies:
- I want to query an Object
- the object (class A) is used by a dynamic proxy
- the Object is a superclass of two Objects (Classes A1,A2) both mapped
to the same table
- the extended objects are dynamic proxies too
- the criteria is a field from the superclass
Ahh, stupid me. Overriding base class features is already part of the
xdoclet module as I just found out (and that happens to me who wrote the
module; I think I get old ;-). But this is acomplished not via the
ojb.field tag but with a special tag, ojb.modify-inherited, which then
also allows to mod
Hi,
Thank you Thomas and Charles for your fast answers. I think I'll use
transaction.checkpoint() as Charles pointed.
By the way, don't you think this would be a nice feature to be added to
a future OJB version? Say, when an object is persisted insinde a transaction
it would be nice if any
Hi, I am trying to implement a m:n association,
using manual decomposition into two 1:n
associations, because I need get information
from intermediary table.
The situation I want is:
One "Promotion" has a list of "Offer".
I have a Offer_Promotion intermediary table.
When I find one "Promotion",
Hi,
As Thomas says, this is by design. However, you can force the transaction to
flush all object changes to the database, without committing the underlying
database connection :
In RC4, you can use Transaction.checkpoint() e.g. t.checkpoint();
After RC4 (i.e. in CVS), you should be able to cast
Hi Jair,
ODMG transaction write to the db only on tx.commit.
Thus q is not persistent in the database when you perform the first query!
All queries (also ODMG OQL!) are executed against the database. So it's
obvious that loaded != q after your query.
after commiting the transaction q is stored i
if you look in the test cases there is a contract->version->effectiveness test that
shows the classic pattern of effectivity of a business object over time with versions.
This is just the data model, of course, and you would need to manage creation of the
versions and effectiveness objects, but
Sorry but when I look this :
I think your class is like this :
class B
{
private int id;
private String email;
private A super;
/* getters and setters*/
}
So, it's an agregation (also extends but where is your type A attribute in B ?) and
you ca
Hi Thomas,
First of all, I'm very sorry for having posted this question to you
directly, instead of to the OJB user group.
I will not make that mistake again! Sorry!
About the solution you have provided, Thomas, I can't select from
Application class because I am not sure all persons
have applic
Hi,
I am using ojb1.0_rc4, ODMG api with OJB queries and mysql4. The problem is that
when I persist an object and run a identity query looking for the persisted objet the
query returns null. This only happens when I persist the object and execute the query
in the same transaction. Is this be
Sending again... Sorry, but it's important...
- Original Message -
From: Edson Carlos Ericksson Richter
To: 'OJB Users List'
Sent: Thursday, September 04, 2003 1:21 PM
Subject: Dynamic proxies and DB index usage optimization
Hi!
I'm using dynamic proxy feature in a large database.
I'v
Hello,
we are using OJB on an application server, in the moment JBoss.
everything works fine until
there comes an exception and the PersistentBroker gets closed without a
commit.
in the close()-method the broker does a rollback on the underlying
connection-object and with
the ByPassConnection
Hi,
> since I changed the class cache implementation from
> ObjectCacheEmptyImpl to ObjectCachePerBrokerImpl,
> my application don´t stop to consume more memory,
> and never free any memory.
made some tests, seems all works fine. If you call
PB.abortTransaction() or PB.close() the ObjectCache
#cl
I've the two situation in my project. I have a documents table table has a
fixed structure to all types of documents, and I have different tables for
different objects, in another (a payment structure).
All that works. I think you must specify that your interfaces extends
others. The java.io.Seria
Depends on what type you mean. I have thought some on the subject of
versioning objects and any subobjects; to provide a tag/milestone based
versioning. First, it seems to me that this would be a fairly
significant project; best built as a module running on top of the OJB
core. Second, it th
Hi,
I'm having some problems with ObjectCachePerBrokerImpl, since I changed the class
cache implementation from ObjectCacheEmptyImpl to ObjectCachePerBrokerImpl, my
application don´t stop to consume more memory, and never free any memory. I'm working
with one PersistenceBroker per Thread, but
Ok, great. That is exactly how I have it. As we discussed before that is not
working, so I will patiently wait for your fix for this.
I really do appreciate your work and effort in this!
Thanks again!
-Andrew
-Original Message-
From: Thomas Dudziak [mailto:[EMAIL PROTECTED]
Sent: Friday
Outstanding
On Fri, 2003-09-12 at 05:58, Thomas Dudziak wrote:
> Yes, both the repository descriptor (aka repository_user.xml) and the
> table schema (for Torque which then generates the tables in your
> database) are generated by the xdoclet ojb module.
> If you want to try it out, grab OJB f
Yes, both the repository descriptor (aka repository_user.xml) and the
table schema (for Torque which then generates the tables in your
database) are generated by the xdoclet ojb module.
If you want to try it out, grab OJB from CVS and look into the contrib
folder. There you'll find the module along
I'd love to learn how your using XDoclet with OJB. Are you generating
both the DDL and the repository?
On Fri, 2003-09-12 at 03:13, Thomas Dudziak wrote:
> A field declared in the class javadoc comment is only then not anonymous
> if there is a tagged field with that name in a base class of that
Hi,
i have 2 classes A and B. B inherits from A. i map classes A and B on multiple
joined tables.
my classes are
class A
{
private int id;
private String name;
/* getters and setters*/
}
class B extends A
{
private int id;
private String email;
/* getters and setters*/
}
my de
1. In your table you need a dedicated column of type INTEGER or
TIMESTAMP . Say the column is typed as INTEGER and named
VERSION_MAINTAINED_BY_OJB .
2. You then need a (possibly private) attribute in your java class
corresponding to the column. Say the attribute is defined as:
A field declared in the class javadoc comment is only then not anonymous
if there is a tagged field with that name in a base class of that
class. So, you simply tag the field with @ojb.field in your base class
(BusinessObject if I remember correctly) - this does not require that you
also tag the cl
Are there any thoughts how to implement versioning using OJB?
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Hi Rick,
please post further requests to the ojb user list, not to developers
directly.
To answer you question.
If you select a person object, OJB will load all Application objects that
belong to that person.
You have to selct from the Application class and must use criteria that
specify the
hi carlos,
did I say, that PersonPO and OrganisationPO are mapped to the same table?
The do!
joerg
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Hi Carlos,
as you can see below, I nearly did the same you wrote, except that all
my classes/interfaces
extend java.io.Serializable.
joerg
Edson Carlos Ericksson Richter wrote:
Hi!
I'm using dynamic proxy and seen no problems at all (at least for rc3/rc4).
Let me show how I'm using.
I'll u
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