hibernate, saving and updating doesn't do anything

[duffcase]

Hi.

I've recently upgraded from jboss 4.0.3 to 4.0.4GA, and I've had some troubles getting hibernate to work correctly. I'm almost there now, except whenever I try to make changes to the database, nothing happens!?

So there must be something I'm missing..
Either my config is wrong, or my strategy is wrong.

this is my jboss-service.xml:

<server>
 <mbean code="org.jboss.hibernate.jmx.Hibernate" name="jboss.TRIM:name=HibernateSessionFactory">
 <!-- Wait for the Postgres Datasource to be defined -->
 <!-- <depends>jboss.jca:service=RARDeployer</depends> -->
 <!-- <depends>jboss.jca:service=LocalTxCM,name=PostgresDS</depends> -->
 <depends>jboss.jca:service=DataSourceBinding,name=PostgresDS</depends>

 <attribute name="DatasourceName">java:/PostgresDS</attribute>
 <attribute name="Dialect">org.hibernate.dialect.PostgreSQLDialect</attribute>
 <attribute name="Username">admin</attribute>
 <attribute name="Password">123456</attribute>
 <attribute name="SessionFactoryName">java:/hibernate/TRIMSessionFactory</attribute>


 <!-- We do want hibernate to look everywhere for mapping files-->
 <attribute name="ScanForMappingsEnabled">true</attribute>

 <!-- We also want to see the actual SQL -->
 <attribute name="ShowSqlEnabled">true</attribute>
 <attribute name="SqlCommentsEnabled">true</attribute>

 <!-- Second level caching -->
 <attribute name="SecondLevelCacheEnabled">true</attribute>
 <attribute name="CacheProviderClass">org.hibernate.cache.EhCacheProvider</attribute>
 <attribute name="QueryCacheEnabled">false</attribute>

 </mbean>
</server>

and this is how I use hibernate.

 public boolean saveEditedRelationType ( RelationType relationType) {
 try {
 // Get session from session factory
 Session session = HibernateSessionFactory.currentSession();

 // Tell hibernate to save to database, gets the object ID in return
 session.saveOrUpdate( relationType );

 return true;

 } catch (HibernateException hex) {

when I use the ShowSqlEnabled in my config, I only see selects in the output.. shouldn't there be updates or inserts?

[duffcase]

This seems to work.. Is this an acceptable way to do it, or will I encounter exceptions?

 session.getTransaction().begin();
 session.saveOrUpdate( in );
 session.getTransaction().commit();