It is probably because of the empty string that causes problem with the dirty check. Does Oracle changed it behavior on empty string comparison in 8.1.7?
Could you try and let me know if using add the attribute dirty="ignore" into the field mapping? Thomas -----Original Message----- >From: lars.gersmann [mailto:[EMAIL PROTECTED]] >Sent: Monday, December 31, 2001 5:10 AM >To: [EMAIL PROTECTED] >Subject: [castor-dev] jdo bug part2 > >sorry i forgot to append the testcase :-) > >below the bug message send before. > >hi, > >i created a simple persistent class TextValue > >public class TextValue >{ > public String id = null; > public String value = null; > > public TextValue() > { > } > > public String toString() > { > return value; > } >} > >i am using oracle 8.1.7 as database. > >when creating a TextValue object with value set to an empty string ("") and >set the id field without key generator > >... > db.begin(); > TextValue text = new TextValue(); > text.id = "test"; > text.value = ""; > db.create( text); > db.commit(); > > db.begin(); > text = (TextValue)db.load( TextValue.class, "test"); > text.value = "a sample value"; > db.commit(); >... > >i get an error on next update of the object: > >Castor: Creating TextValue (test) >Castor: Loading TextValue (test) >Castor: Storing TextValue (test) >org.exolab.castor.jdo.ObjectModifiedException: Transaction aborted: Object >of type TextValue with identity test has been modified by a concurrent >transaction > at org.exolab.castor.jdo.engine.SQLEngine.store(SQLEngine.java:867) > at org.exolab.castor.persist.ClassMolder.store(ClassMolder.java:1584) > at org.exolab.castor.persist.LockEngine.store(LockEngine.java:758) > at >org.exolab.castor.persist.TransactionContext.prepare(TransactionContext.jav a >:1457) > at org.exolab.castor.jdo.engine.DatabaseImpl.commit(DatabaseImpl.java:499) > at ora_test.run(ora_test.java:52) > at ora_test.main(ora_test.java:63) >Exception in thread "main" Normal Termination > >but when using a key generator for the id field everything is fine !! > >i used the cvs version 2001/12/27. > >hope the appended testcase helps fixing the bug. > >thanks, > >lars > > ----------------------------------------------------------- If you wish to unsubscribe from this mailing, send mail to [EMAIL PROTECTED] with a subject of: unsubscribe castor-dev
