[jboss-user] [EJB 3.0] - relationship does not prevent from deleting referenced entit

I thougtht, that the definition of a unidirectional relationship without cascading delet would prevent the Entities from deletion Example: unidirectional many-to-many relationship between user and usergroup. users know their usergroups, usergroups do not know their users It shold not be possible to delete a usergroup which is in an relationship to a (or many) user I coded like this, what have I done wrong? Thanks Micho @Entity | public class Usergroup implements Serializable | { private long mSid; | private String mName; | | public BenutzerGruppe() | { super(); } | | @Id @GeneratedValue(strategy=GenerationType.AUTO) | public long getSid() | { return mSid; } | | public void setSid(long sid) | { mSid = sid; } | | public String getName() | { return mName; } | | public void setName(String pName) | { this.mName = pName; } | } | @Entity | public class User implements Serializable | { private long mSid; | private String mName; | private List<Usergroup> mUsergrouplist; | | public User() | { super(); } | | public String getName() | { return mName; } | | public void setName(String pName) | { mName = pName;} | | @Id @GeneratedValue(strategy=GenerationType.AUTO) | public long getSid() | { return mSid; } | | public void setSid(long pSid) | { mSid = pSid; } | | @ManyToMany | ( targetEntity = Usergroup.class ) | public List<Usergroup> getUsergrouplist() | { return mUsergrouplist; } | | public void setUsergrouplist(List<Usergroup> pUsergrouplist) | { mBenutzerGruppeListe = pBenutzerGruppeListe; } | } | View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4019859#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...