Rental.hbm.xml

<class name="Rental" table="rentals" dynamic-insert="true" dynamic-update="true">

   <id name="rentalID" column="rentalID" type="string">
      <generator class="assigned"/>
   </id>

   <property name="bookingDate" column="bookingDate" type="date" not-null="true"/>

   <!-- n:1 mapping with User -->
   <many-to-one name="user"
      column="userID"
      class="User"
      not-null="true"
      fetch="join"
      cascade="all"/>

   <!-- 1:1 mapping with Address -->
   <many-to-one name="address"
         column="addressID"
         class="Address"
         cascade="all"
         unique="true"
         not-null="true"/>

   <!-- m:n mapping with Movie -->
   <set name="rentedMovies" table="rented_movie" lazy="true" cascade="all">
      <key column="rentalID"/>
      <composite-element class="RentedMovie">
         <property name="returnDate" column="returnDate" type="date" not-null="true"/>
         <many-to-one name="movie" column="movieID" class="Movie" not-null="true" cascade="all"/>
      </composite-element>
   </set>

</class>