FW: JTA Transaction with OJb

[Mahler Thomas <th...@itellium.com>]

Hi, 
        I am trying to use the JTA Transaction with OJb. Can you please give
me some articles / code links where i can get a reference implementation. I
want to use it with weblogic server.  
Thanks and regards,
Sudhakar
Cognizant Technology Solutions India Pvt Ltd.
Tidel Park - 6th Floor, Chennai 600 113
Ph: 91-44-22540555 x 7113 Vnet 47421 


This e-mail and any files transmitted with it are for the sole use of the
intended recipient(s) and may contain confidential and privileged
information.
If you are not the intended recipient, please contact the sender by reply
e-mail and destroy all copies of the original message. 
Any unauthorised review, use, disclosure, dissemination, forwarding,
printing or copying of this email or any action taken in reliance on this
e-mail is strictly 
prohibited and may be unlawful.

Visit us at http://www.cognizant.com

---------------------------------------------------------------------
To unsubscribe, e-mail: ojb-user-unsubscribe@db.apache.org
For additional commands, e-mail: ojb-user-help@db.apache.org

Re: Howto get sequence value before

[Armin Waibel <ar...@apache.org>]

Hi,

Lázaro Miguel Fung wrote:
> Hi,
> 
> How I can get a sequence value using SequenceManagerNextValImpl before OJB
> insert a new object in the DB.
> 

You can generate an Identity object before insert, then the PK fields 
will be set in object and you can get them from the generated Identity, see
http://db.apache.org/ojb/docu/guides/sequencemanager.html#Force+computation+of+unique+values

Another possibility is to lookup a new sequence value using 
SequenceManager#getUniqueValue(FieldDescriptor field) via
broker.serviceSequenceManager()
and then *set* the PK values by your own in the new object (The PK 
fields can be obtained from the ClassDescriptor and this from 
broker.getClassDescriptorFor(object)).

In both cases I recommend to use broker.store(Object obj, 
ObjectModification mod) for best performance.

Or use one of OJB callback interfaces to extract the PK value before 
insert (PersistenceBrokerAware, PBLifeCycleListener more info see javadoc).

All suggestions are not possible when database IDENTITY columns will be 
used (but you don't ;-)), see
http://db.apache.org/ojb/docu/guides/sequencemanager.html#Identity+based+sequence+manager

regards,
Armin


> TIA.
> 
> LFung
> 
> 
> 
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: ojb-user-unsubscribe@db.apache.org
> For additional commands, e-mail: ojb-user-help@db.apache.org
> 
> 
> 

---------------------------------------------------------------------
To unsubscribe, e-mail: ojb-user-unsubscribe@db.apache.org
For additional commands, e-mail: ojb-user-help@db.apache.org

Howto get sequence value before

[Lázaro Miguel Fung <lf...@desliang.com>]

Hi,

How I can get a sequence value using SequenceManagerNextValImpl before OJB
insert a new object in the DB.

TIA.

LFung



---------------------------------------------------------------------
To unsubscribe, e-mail: ojb-user-unsubscribe@db.apache.org
For additional commands, e-mail: ojb-user-help@db.apache.org