ZZZ Liu wrote:
Hi, Armin
Thanks a lot for your reply. I am using PB-api and the batch mode is turned on (in repository_database.xml, batch-mode="true" for jdbc-connection-descriptor). I found that database operations are not applied to db until transaction is commited. For example, if I try to insert null into a "not null" field, I won't get exception until transaction is commited. Is the problem caused due to batch-mode=true?
hmm, set batch-mode 'true' enables OJB to use batch operations if your DB supports it. But you have to call broker.getConnectionManager().setBatchMode("true") before begin with pb-tx to start a batchable session. If you do so, then the answer is yes.
I assume your problem is another. Are you sure that you always use the same PB instance?
What's the environment - servlet, stand-alone, managed-environment?
Can you post your sample code?
regards, Armin
Thanks, Zhe
---------------------------------------------------------------------
-----Original Message----- From: Armin Waibel [mailto:[EMAIL PROTECTED] Sent: Thursday, January 15, 2004 2:25 AM To: OJB Users List Subject: Re: Cannot retrieve back just saved objects without committing transaction
Hi Zhe,
ZZZ Liu wrote:
Hi, all
I have a problem when I try to insert an object in
a
data base table and then try to retrieve all
records
from that table. I use the same persistence broker
for
the above two operations. I found that if I don't commit the transaction after save, the retrieved records won't include the new record just saved.
If you are using PB-api this should work.
PersistenceBroker has same behaviour as a "pur Connection". If you start a
PB-tx a connection was associated with the PB instance. Do you enable batch
mode?
The ODMG-api is different, it collects all changes
till commit is called. To write changes to DB while the tx is
running, you have to call proprietary TransactionExt#flush() method.
regards, Armin
I am wondering whether anybody else ever had this
problem
and whether this is a bug or is designed in this
way.
But I know if I use JDBC directly, and if I insert
a
record in a database table, even though it is not commited, the record should be visible to current session (connection).
I am using rc5. Any help or comments on this
problem
would be much appreciated.
Thanks in advance. Zhe
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