[castor-dev] jdo bug part2

[lars.gersmann]

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.java
: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

FAILURE.zip
Description: Zip compressed data