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    <p>I suspect you may be falling at the first hurdle:</p> <p>As has been previously stated, Hibernate will update the object that you call <code>update()</code> on and then cascade down to any subsequent objects that require updating, following the rules you specify in the <code>@Cascade</code> attribute.</p> <p>The problem is that your <code>User</code> class owns the relationship and adding a <code>User</code> object to the <code>VirtualDomain.userset</code> collection does not alter the <code>User</code> object in any way. Thus even with a cascade, Hibernate will not update the <code>User</code> object as it doesn't think that it has to.</p> <p>Instead, when you add an object to the <code>VirtualDomain.userset</code> collection, ensure that the <code>VirtualDomain</code> is added to the <code>User.virtualdomainset</code> collection as well.</p> <pre><code>// given a VirtualDomain object VirtualDomain domain = getSession().load( VirtualDomain.class, 1234 ); // and a User object User user = getSession().load( User.class, 5678 ); // add the User to the VirtualDomain domain.getUserset().add( user ); // but also add the VirtualDomain to the user user.getVirtualdomainset().add( domain ); // update the VirtualDomain and the Cascade settings will also update the User getSession().update( domain ); </code></pre> <p>In cases like this I find it useful to provide a helper method for adding objects to collections, rather than using direct access to the collections themselves. e.g.</p> <pre><code>public class VirtualDomain { Set userset; /* snip... */ public void addUser( User user ) { getUserset().add( user ); user.getVirtualdomainset().add( this ); } } </code></pre> <p>Although it's worth remembering the advice of the Hibernate fore-fathers:</p> <blockquote> <p>"In a real system, you may not have a many-to-many association. Our experience is that there is almost always other information that must be attached to each link... the best way... is via an intermediate <em>assocation class</em>." (Java Persistence With Hibernate, p. 297/298 , ISBN 1-932394-88-5)</p> </blockquote>
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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