mapping of collection and class

ganesh.guddu · **Joined:** Mon Mar 02, 2009 3:36 pm **Posts:** 25

Hi ,

i have declared a set in my *.hbm.xml file and mapped it with a class as one to many . using configuration properties i want to know that to which class this collection is mapped ??? could anybody please tell me how to proceed ???

Thanks,
Ganesh

littypreethkr · **Posted:** Wed Mar 18, 2009 6:43 am

Do you mean: at runtime you have a Set object and you want to know the class to which this Set object is mapped (owner of this Set object)

For this you can do this:

Code:

public Class getOwnerClass(java.util.Collection c) {
    if(c instanceof PersistentCollection) {
        return c.getOwner().getClass();
    }
    return null;
}

ganesh.guddu · **Joined:** Mon Mar 02, 2009 3:36 pm **Posts:** 25

No i don't want to know the owner of the collection ..

i am putting my problem through an example :

i have a "Person" class which has a set named "addresses" and this set is mapped to the "Address" class in the person.hbm.xml file . now at run time ,using configuration property i am able to list all the collections which are declared in mapping file and owner entity name of the collection but i am not able to know that the content of the collection . i.e i want to know that the set named "addresses" is declared to hold the "Address" Object .

If you want to see my code i will paste it here .

Thanks,
Ganesh

littypreethkr · **Posted:** Thu Mar 19, 2009 12:33 am

May be this will give you wht you want:

Code:

collection.getCollectionType().getElementType(
                     (SessionFactoryImplementor) HibernateUtil
                           .getSessionFactory()).getName()

collection is of type org.hibernate.mapping.Collection