Hi Sergey,
Manukyan, Sergey wrote:
Hi Everybody,
We upgraded to 1.0.4 and using JT400-4.4 JDBC driver for AS400 data
source.
See now our JDBC driver throwing exceptions when OJB askes him for field
named "OJB_CLAZZ", that the result set doesn't have, and it happens for
every row.
Is it possible to avoid OJB to check for this field from result set?
First, thanks much! This was an important hint to unravel the mystery of
slowdown of query performance between 1.0.3 and 1.0.4.
Currently OJB checks each row of a result set for this column. The check
was needed to resolve real class names when inheritance was used.
http://db.apache.org/ojb/docu/guides/advanced-technique.html#Mapping+Each+Subclass+to+a+Distinct+Table+%28table+per+subclass%29
I will check in a improved version tomorrow. This version will only ask
for the column when it really exists, thus no exceptions should occur.
regards,
Armin
-Sergey
-----Original Message-----
From: Armin Waibel [mailto:[EMAIL PROTECTED]
Sent: Friday, January 20, 2006 12:58 PM
To: OJB Users List
Subject: Re: store object without references
Hi Sergey,
Manukyan, Sergey wrote:
Folks,
I am using 1.0.4.
Could you please advice if there is a way to store an object of some
class without storing references although I defined in the descriptor
of
the class to store references as well.
I am looking for a workaround that will enable me to do it in some
cases...
Something like:
PersistenceBroker.store(object, <some flag to indicate not to store
references>)
you can use a method defined in PersistenceBrokerInternal, simply cast
the used PB instance to PBI.
public void store(Object obj, Identity oid, ClassDescriptor cld,
boolean insert, boolean ignoreReferences)
This method will ignore the auto-update settings when flag
'ignoreReferences' is true.
http://db.apache.org/ojb/api/org/apache/ojb/broker/PersistenceBrokerInte
rnal.html
Build the Identity via IdentityFactory (service method in PB), lookup
the ClassDescriptor via PB.
regards,
Armin
Thank you,
Sergey
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