Hi,
That's ok. Thanks for the help
Armin Waibel wrote:
Hi Alen,
I can't speak for weblogic server (I don't use it), but
we have a similar redeploy problems with jboss (ok, we got
a exception after redeploy) until we deploy the whole
ejb-examples with all ojb.jars + config files + libraries
in a
Solution 1:
Implement AddressGroup as a custom collection (implementing Manageable
Collection) used to hold the address instances. This muddies the domain
model a bit as AddressGroup then needs to know about
ManageableCollection.
Solution 2:
Map two classes to the same table (I used an exist
Hi again,
Plummer, Greg wrote:
Hi Armim,
Thanks for the quick reply.
batch-mode is false.
Here's my DB definition:
==> typo?
platform="db2"
jdbc-level="1.0"
driver="COM.ibm.db2.jdbc.app.DB2Driver"
protocol="jdbc"
subprotocol="db2"
dbalias="DB2T
Sound like AddressGroup is a collection of addresses. Through the 'collection-class'
attribute on collection descriptors you can specify your own implementation of the
collection class to use for a particular relationship. I think it needs to implement
Collection, but other than that it seems
Hello, and now for something completely different:
are there any plans to support the native inheritance feature of e.g.
postgres for mapping of object hierarchies?
Is there any O/R-Mapper that supports this feature?
Are there special reasons not to work this way?
Thanks
-Gunnar
Hello all,
I am stumped by what is posibly a very simple mapping problem.
Consider something like this
Person is stored in the person table
Person has-a AddressGroup. AddressGroup is not stored in the DB
AddressGroup has a list of Addresses
Address is stored in th
Hi Armim,
Thanks for the quick reply.
batch-mode is false.
Here's my DB definition:
By the way, I'm using the PersistenceManager directly, not JDO or ODMG.
One more thing to note, when instances of ClientPayrollDeductionPlan
have a value of 0 for the planId field
Hi,
sorry for the late reply (forget to reply).
It's a very detailed description, but anyway
I'm a little confused. So could you please
post the relevant code? When DescriptorRepository
profile is set, when perThreadChanges are enabled, ...
regards,
Armin
C.K, Shibin (Cognizant) wrote:
Hi,
Hi Greg,
assume you are using SequenceManagerNativeImpl
(or SequenceManagerMySQLImpl). The '-1' value
is a temporary used id. Normally OJB creating
and handling id's before an object was written
to DB. When using identity columns the id can
only be read after the object was stored to DB.
hmm, do y
Hi All,
I have a superclass, PayrollDeductionPlan, that contains a collection of
PayPlanAssociation objects. The foreign key in the PayPlanAssociation
table that points back to the PayrollDeductionPlan table is not getting
stored correctly. See the snapshots of the tables below, don't know
where t
Hi Marcello,
Marcello Zaniboni wrote:
Hi. I am exploring the implementations of ObjectCache.
Where can I find documents about ObjectCacheJCSImpl,
ObjectCachePerClassImpl, ObjectCacheUnlimitedImpl, etc.?
In the javadoc I do not find enough information
Try latest from CVS to get the refactored
Hi again,
sorry I don't have much experience
in using odmg-api (I'm not a real-life
hardcore odmg-user), so I can't give
any recommendation :-(
regards,
Armin
Gunnar Hilling wrote:
Thanks for your answer. One additional question:
Is it definitely correct to use DList as Collection-Class in my
Bu
Thanks for your answer. One additional question:
Is it definitely correct to use DList as Collection-Class in my
Business-Objects? In my current Setup, I use DLists (DListImpl_2), default
settings for auto-x (as recommended), no refresh, adding bidirectional
references manually.
Is this sane? Rec
Hi,
Gunnar Hilling wrote:
Hello!
Simple Question: What is the difference between DListImpl and DListImpl_2?
DListImpl_2 is a new DList implementation and should replace
the old one sooner or later.
The new implementation does better seperate the characteristics
be a List and be a persistence cap
Hello!
Simple Question: What is the difference between DListImpl and DListImpl_2?
"DListImpl_2" seems to work faster for me. Are there any differences? Is
it in Beta Stage?
Which one should I use?
Regards,
-Gunnar
-
To unsubs
Hi
Could someone please confirm that the following solution options are
correct:
1. ObjectCacheClass=org.apache.ojb.broker.cache.ObjectCachePerBrokerImpl but
each user session must use a dedicated broker with its own local cache.
Or
2. ObjectCacheClass=org.apache.ojb.broker.cache.ObjectCacheEmp
Hello All,
I am wondering how to get ojb to respect default fields. (if it matters, I am using
MySql and Weblogic).
I have a table that has a field defined as non-nullable and with a default like so:
SecurityUseType varchar(1) NOT NULL DEFAULT 'N'
My domain class has a field of the s
Hi
How do I use OJB and ODMG to ensure that during an update transaction to an
object:
1. Other threads can do a read of this object
2. The object returned from the read does not show any of the changed state
from the update transaction until the update transaction has been committed.
Thanks
Sha
Hi. I am exploring the implementations of ObjectCache.
Where can I find documents about ObjectCacheJCSImpl,
ObjectCachePerClassImpl, ObjectCacheUnlimitedImpl, etc.?
In the javadoc I do not find enough information
Thanks,
Marcello Zaniboni
---
If I have a 1..n relationship in my object, eg:
Car--->Parts
and I do something like:
Car car = new Car();
car.getParts().add(new Engine());
broker.store(car);
I expect one record in my Car table and one in my Parts table. Perfect
- that's what I have.
Now, I do a:
car.setParts(new ArrayList
Hello,
i'm selecting an object and than i change this object and store it. The next selection
with OJB provides me the unchanged object and the third selection always provides me
the changed object.
I tried to clear the cache of the broker, but this causes that every selection after
the change
You need it for the lazy instantiation via the iterator
On Thu, 2003-10-30 at 09:06, [EMAIL PROTECTED] wrote:
> > get rid of the transaction... why are you doing a
> > broker.close() before
> > you starting iterating? Not sure what you are trying to do.
>
> I'm doing a broker.close() to be sure
> get rid of the transaction... why are you doing a
> broker.close() before
> you starting iterating? Not sure what you are trying to do.
I'm doing a broker.close() to be sure to put the broker instance back to the
connection pool.
Sylvain
-
How do u store a m:n relation which looks like an array?
when i try to do that i get the following error
java.lang.ClassCastException
at
org.apache.ojb.broker.core.PersistenceBrokerImpl.storeCollections(Persistenc
eBrokerImpl.java:785)
at
org.apache.ojb.broker.core.PersistenceBrokerImpl.store
get rid of the transaction... why are you doing a broker.close() before
you starting iterating? Not sure what you are trying to do.
getIteratorByQuery() is a lazy version of getCollectionByQuery(). If
does a count when creating the iterator and a select on each
iter.next().
your code should loo
Hi again,
Rémi Bars wrote:
I'm not familiar with java.beans package.
So what's wrong invoking
"Method m = getPropertyDescriptor().getWriteMethod();"
write method for the property to set the value?
this method (getPropertyDescriptor().) don't see the parent's field.
hmm, I don't understand
Hello,
I have a question/problem about the function getIteratorByQuery():
Here is a code:
code
Iterator iter = null;
try {
broker = PersistenceBrokerFactory.defaultPersistenceBroker();
broker.beginTransaction();
iter = broker.getIteratorByQuery(query);
broker.commitTransaction();
> I'm not familiar with java.beans package.
> So what's wrong invoking
> "Method m = getPropertyDescriptor().getWriteMethod();"
> write method for the property to set the value?
this method (getPropertyDescriptor().) don't see the parent's field.
remi
Sorry, get your last post too late ;-)
Armin
Armin Waibel wrote:
Hi,
Rémi Bars wrote:
Hi all,
i don't understand the use of the PersistentFieldIntrospectorImpl class.
in the OJB.properties i read:
# - PersistentFieldIntrospectorImpl
# uses JavaBeans compliant calls only to access persiste
Hi,
Rémi Bars wrote:
Hi all,
i don't understand the use of the PersistentFieldIntrospectorImpl class.
in the OJB.properties i read:
# - PersistentFieldIntrospectorImpl
# uses JavaBeans compliant calls only to access persistent attributes.
# No Reflection is needed. But for each attribute x
ok it is in the doc tutorial3.htm
sorry :)
remi
- Original Message -
From: "Rémi Bars" <[EMAIL PROTECTED]>
To: "OJB Users List" <[EMAIL PROTECTED]>
Sent: Thursday, October 30, 2003 3:34 PM
Subject: PersistentFieldIntrospectorImpl
> Hi all,
>
> i don't understand the use of the Per
Hi all,
i don't understand the use of the PersistentFieldIntrospectorImpl class.
in the OJB.properties i read:
# - PersistentFieldIntrospectorImpl
# uses JavaBeans compliant calls only to access persistent attributes.
# No Reflection is needed. But for each attribute xxx there must be
# pu
Hi Gerhard,
At first I'd like to thank You for the hints!
> Hi again,
>
> According to the docs, the auto-xy options should be left at their
> defaults for ODMG to work correctly. I'm not sure how this really
> affects things, but obviously something goes wrong with
> auto-update=true.
>
> The
OK, I solved *nearly* all of my problems (at least those related to OJB ;-).
Now I persist "Zertifikat" with db.makePersistent() before adding "Option".
Remaining problem:
The collection of "Zertifikat" is empty *unless* the Object is loaded from
the database. refresh="true" is set on the Collect
Hi again,
According to the docs, the auto-xy options should be left at their
defaults for ODMG to work correctly. I'm not sure how this really
affects things, but obviously something goes wrong with
auto-update=true.
The remaining problem is probably solved by doing both a
zz.addOption(o1) *and*
Emmanuel Dupont wrote:
Maybe you have reach the max number limit of connection borrowed.
superfluous to say
... and don't forget to call broker.close() after
using a PersistenceBroker instance. This will return
pooled PB instance back to pool.
regards,
Armin
In ojb.properties check the flag :
By the Way: I'm using ManageableSet for my Collections (both) and ojb from
cvs (maybe one week old).
-Gunnar
-
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Hi Alen,
I can't speak for weblogic server (I don't use it), but
we have a similar redeploy problems with jboss (ok, we got
a exception after redeploy) until we deploy the whole
ejb-examples with all ojb.jars + config files + libraries
in a sar directory (jboss specific deployment format).
Sorry,
Maybe you have reach the max number limit of connection borrowed.
In ojb.properties check the flag :
ConnectionFactoryClass, it seems you use the ConnectionFactoryPooledImpl
And
whenExhaustedAction=0
Isn't it ?
-Message d'origine-
De : Réda Benzair [mailto:[EMAIL PROTECTED]
Envoyé :
On Thu, 30 Oct 2003 08:58:33 +0100, Gerhard Grosse wrote:
Hello Gerhard,
Thanks for your Proposal. I think the problem is somewhere where you
pointed out.
But it't not exactly what you proposed. I think there is a problem whith
"auto-update" and "auto-retrieve"- Options. If "Option" is auto-updat
Hello,
> -Original Message-
> From: Andy Malakov [mailto:[EMAIL PROTECTED]
> Problem: Right after insert, PersistenceBrokerImpl calls
> storeCollections () method that performs redundant DELETE FROM...
> operation.
The problem has been mentioned by myself in the developer list
together
Hi
I have a problem in the excecution with this error :
Error handled :org.apache.ojb.broker.PBFactoryException: Borrow broker
from pool failed
org.apache.ojb.broker.PBFactoryException: Borrow broker from pool failed
I do not know which is the cause of this error on the level of OJB.
her
Hi Edson,
I apologize; I wanted to say in the collection-descriptor.
Each time I have a Foreign Key reference in the reference_descriptor I have
an inverse Foreign Key in a collection descriptor.
Maybe I'm wrong...I thought you all time oblige to have a collection
descriptor in such case
Yes, I've done this yesterday, and it works. Thanks for the tip.
Edson Richter
- Original Message -
From: Gerhard Grosse
To: [EMAIL PROTECTED]
Sent: Thursday, October 30, 2003 5:04 AM
Subject: Re: 1:1 navigable && EmptyCache bug
Hi Edson,
I think with EmptyCache OJB can
Can you explain a bit more? I never seen inverse foreign keys in
references... How this apply in sample XML bellow?
- Original Message -
From: Emmanuel Dupont
To: 'OJB Users List'
Sent: Thursday, October 30, 2003 4:59 AM
Subject: RE : 1:1 navigable && EmptyCache bug
Is it because you don
Hi,
I cannot see a nice solution to my problem, I would like to do a
(PersistenceBroker API) QueryByCriteria that uses where-clauses on two
tables that have no relations to each other.
ex.: 2 tables
TAB_A ( ID_A, VALUE_A ) and TAB_B ( ID_B, VALUE_B )
now i need a query like:
SELECT ID_A, VAL
Hi Edson,
I think with EmptyCache OJB cannot detect loops in your object
relations, because it does not maintain object identity. I'm afraid
you need to use some non-empty cache implementation or remove the
back-reference that causes the loop.
hth
Gerhard
On Wed, 29 Oct 2003 19:36:59 -0300, "Eds
Hi Gunnar,
First thing I would try is to add db.makePersistent(o1) to your code.
This affects the order of generated SQL statements and might solve
your problem.
hth
Gerhard
On Wed, 29 Oct 2003 18:29:31 +0100, Gunnar Hilling
<[EMAIL PROTECTED]> wrote:
>Hello,
>I got a problem with the followin
Is it because you don't have any Inverse_foreignkey in your reference
descriptor ?
-Message d'origine-
De : Edson Carlos Ericksson Richter
[mailto:[EMAIL PROTECTED]
Envoyé : mercredi 29 octobre 2003 23:37
À : 'OJB Users List'
Objet : 1:1 navigable && EmptyCache bug
Hi!
If using EmptyCa
Hi Bob,
You can obtain a PersistenceBroker instance from the ODMG transaction
by casting it to the interface HasBroker and then use OJB queries. The
only difference is that you have to read-lock the query results
yourself:
PersistenceBroker pb = ((HasBroker) tx).getBroker();
Object result = broke
Hi Christophe,
Christophe.Demarey wrote:
Hi,
Is there a way how I can simultaneously use multiple databases from OJB
JDO ?
OJB allows us to specify multiple jdbc-connection in the database
repository but I don't know how to choose a jdbc-connection via the OJB
JDO api ?
Currently our JDO solu
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