[jboss-user] [Persistence, JBoss/CMP, Hibernate, Database] - How to turn off cascading saving/deleting

I have a SITE, and a SHIPTYPE table. These two table have a many-to-may relationship (the cross reference table is SHIPTYPE_X_SITE). I created the corresponding entities Site and ShipType. For the creation of ShipType, my UI has ShipType related fields as well as a list of sites. Therefore,ShipType has a collection of Sites: @ManyToMany(fetch=FetchType.LAZY) @JoinTable(name="SHIPTYPE_X_SITE", joinColumns={@JoinColumn(name="SHIP_TYPE_CD",referencedColumnName="SHIP_TYP_CD")}, inverseJoinColumns={@JoinColumn(name="ST_SITE_ID",referencedColumnName="SITE_ID")}) private List sites; and the cross reference records are saved when I save ShipType. That is good. On the other side, the creation of Site just have some basic Site related fields. There is no list of ShipTYPES in the UI. However, I do have the need to retrieve list of ShipTypes associated with a site sometimes. So I added following association to Site entity bean: @ManyToMany(fetch=FetchType.LAZY) @JoinTable(name="SHIPTYPE_X_SITE", joinColumns={@JoinColumn(name="ST_SITE_ID",referencedColumnName="SITE_ID")}, inverseJoinColumns={@JoinColumn(name="SHIP_TYPE_CD",referencedColumnName="SHIP_TYP_CD")}) private List shipTypes; Once I did that, if I modify Site and save (collection shipTypes is null), all the cross reference records are gone for the given site. My question is how can I make the Site bean has the association, but not doing the cascading? Thank you very much for you help. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4177530#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...