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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