I have class Feature and Class CPProfile. they have many to many relationship. I use to one-to-many and CPProfile_Feature class since it has another column. When I try to delete the child (CPProfile_Feature ) the parent (Feature) is being deleted as well!! Why?
I do: Feature f = session.load(....)
f.deleteFeaturesFromProfiles();

Here are my classes:
Class Feature{

Set featuresProfiles = new HashSet();
/**
* @hibernate.set
* cascade="save-update"
* inverse="false"
* lazy="true"
*
* @hibernate.collection-key
* column="FEATURE_ID"
*
* @hibernate.collection-one-to-many
* class="CPProfile_Feature"
*
*
* @return Returns the featuresProfiles.
*/
public Set getFeaturesProfiles() {
return featuresProfiles;
}


public void deleteFeaturesFromProfiles(){
Set profileFeatures = featuresProfiles;
for (Iterator it2 = profileFeatures.iterator(); it2.hasNext();)
{
CPProfile_Feature theProfileFeatures = (CPProfile_Feature)it2.next();
CPProfile theProfile = theProfileFeatures.getProfile();
theProfile.getFeaturesProfiles().remove(theProfileFeatures);
}
profileFeatures.clear();
}
}




Class CPProfile{

Set featuresProfiles = new HashSet();

/**
* @hibernate.set
* cascade="save-update"
* inverse="false"
* lazy="true"
*
*
* @hibernate.collection-key
* column="CPPROFILE_ID"

* @hibernate.collection-one-to-many
* class="CPProfile_Feature"
*
*
* @return Returns the featuresProfiles.
*/
public Set getFeaturesProfiles() {
return featuresProfiles;
}

}


Class CPProfile_Feature{

private CPProfile profile;
private Feature feature;

/**
* @hibernate.many-to-one
* name="category"
* insert="true"
* update="true"
* not-null="true"
* column="CPPROFILE_ID"
*
* @return Returns the profile.
*/
public CPProfile getProfile() {
return profile;
}

/**
* @hibernate.many-to-one
* name="feature"
* insert="true"
* update="true"
* not-null="true"
* column="FEATURE_ID"

* @return Returns the feature.
*/
public Feature getFeature() {
return feature;
}

}

I think you want inverse="true" on your parent object.

Inverse="true" true must work for delete but inserting new Parent along with new children will cause problems parent ID is entered as 0 !! At least its causing me that!!
Please Comment

I have explained this prob in my own Post
http://forum.hibernate.org/viewtopic.php?t=945092