I've just ran into a problem (well for me anyway). I have a class called Department which has a collection of TradingAccounts(). This all persists OK in the database.

My problem occurs when I delete one of the items from this collection. Although my Collection of TradingAccounts no longer has a reference to it, it remains in the database!. I've read on the web (URL below) that this is the desired functionality for Hibernate, and I can see uses for this, however I don't want this functionality so it there a way to remove child objects from the database?

I also read that it is possible to use a cascade="all-delete-orphan" option to delete any child objects, however I treid this and it failed during the generate stage of my build process as this option is not specified in the DTD.

Any advice would be much appreciated,

Paul

URL: http://www.hibernate.org/hib_docs/refer ... child.html

all-delete-orphan is exactly for this. Are you using a recent version of hibernate?

Use the latest Hibernate 2.1.1 and all-delete-orphan.

I'm using Hibernate 2.1, and i've checked the DTD and it does allow the all-delete-orphan, but i'm using xDoclet to generate my .hbm.xml files. The build task has the following tag:

<replace dir="${gen-src.dir}">
<include name="**/*.hbm.xml"/>
<replacefilter token="readonly" value="inverse"/>
<replacefilter token="role" value="name"/>
<replacefilter token="hibernate-mapping.dtd" value="hibernate-mapping-2.0.dtd"/>
</replace>

This successfully renames the DTD to use the new one, however the build fails before this code is reached, so i'm assuming that the xDoclet task (xdoclet.modules.hibernate.HibernateDocletTask) for some reason isn't using the latest DTD?

Would an upgrade of xDoclet solve this problem?

Use XDoclet 1.2 final (or CVS version) and remember to set the version attritbute to be "2.0" to get the correct mappings (and DTD reference).

Yep this worked fine, although I did have to chane the following line in my build.xml file:

<replacefilter token="hibernate-mapping-1.1.dtd" value="hibernate-mapping-2.0.dtd"/>

And also change to the following parameters for the xDoclet tag on my class:

@hibernate.list cascade="all-delete-orphan" name="accounts" inverse="true"

This works great! :)

Just set version="2.0" in your <hibernate> ant task