package ejava.examples.orm.core.mapped;
   
   /**
    * This class provides an example of embedding a primary key class within
    * the containing class.
    */
   public class Napsack {
       private NapsackPK pk;
       private int size;
      
      public Napsack() {}
      public Napsack(String make, String model) {
          this.pk = new NapsackPK(make, model);
      }
      
      public NapsackPK getPk() { return pk; }
      
      public int getSize() { return size; }
      public void setSize(int size) {
          this.size = size;
      }
      
      public String toString() {
          return super.toString() +
             "pk=" + pk +
             ", size=" + size;
      }
  }