Sean,
are you still using Castor 0.9.5.3 ? Afair, this problem has been fixed in
CVS, and will be part of the upcoming 0.9.6 release.
Thanks
Werner
PS The problem fixed is that as a result of an ObjectNotFoundException,
sometimes a lock has not been released.
> This might be a bug of castor, please try on your project to see if it
> would happen.
>
> I'm using mysql and my mapping file contains something like this:
> -------------------------------------
> <key-generator name="HIGH-LOW">
> <param name="table" value="sequence"/>
> <param name="key-column" value="tablename"/>
> <param name="value-column" value="currentid"/>
> <param name="same-connection" value="true"/>
> <param name="grab-size" value="1"/>
> </key-generator>
>
> <class identity="id" key-generator="HIGH-LOW" name="model.User">
> <map-to xml="user" table="user" />
> <field name="id" type="integer">
> <sql name="id" type="integer" />
> </field>
> <field name="name" type="string">
> <sql name="name" type="varchar" />
> </field>
> </class>
>
> Suppose that current MAX id of user table is 1000, and the following
> statments:
> -------------------------------------
> Integer id = new Integer(1001);
> User user = database.load(User.class, id);
>
> will throw an exception:
> -------------------------------------
> org.exolab.castor.jdo.ObjectNotFoundException: The object of type
> model.User with identity 1,001 was not found in persistent storage
>
> After this, new user object could never be created:
> -------------------------------------
> User user = new User();
> user.setName("Sean");
> database.create(user);
>
> throws an exception:
> -------------------------------------
> org.exolab.castor.jdo.LockNotGrantedException: Lock is already existed for
> the new oid.
> at
> org.exolab.castor.persist.LockEngine$TypeInfo.rename(LockEngine.java:1357)
> at
>
org.exolab.castor.persist.LockEngine$TypeInfo.access$400(LockEngine.java:1038)
> at org.exolab.castor.persist.LockEngine.create(LockEngine.java:496)
> at
>
org.exolab.castor.persist.TransactionContext.create(TransactionContext.java:907)
> at
> org.exolab.castor.jdo.engine.DatabaseImpl.create(DatabaseImpl.java:374)
> ...
> org.exolab.castor.jdo.PersistenceException: Nested error: Key Generator
> Failure. Duplicated Identity is generated!
>
>
> I searched the Internet and can't find any solution to the exception. Do
> you have any suggestion?
> http://hypermail.linklord.com/castor-dev/2004/Apr/4119.html
>
> Thanks,
> Sean
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