source: src/main/java/bargainingchips/utilityfunctions/UF_75pQtyOrNothing.java@ 341

package bargainingchips.utilityfunctions;

import bargainingchips.Bundle;
import bargainingchips.Stack;

/**
 * If 75 percent of the stacks be satisfied regarding the quantity as long as 
 * the total price would be less than the total price of the wishlist, 
 * bundle b would be evaluated as 1.0, otherwise as 0.0.
 * 
 * @author Faria Nassiri-Mofakham
 *
 */
public class UF_75pQtyOrNothing implements UtilityFunction {

        Bundle wishlist;
        String role;


        /**
         * @return the role
         */
        public String getRole() {
                return role;
        }

        /**
         * @param role the role to set
         */
        public void setRole(String role) {
                this.role = role;
        }

        public UF_75pQtyOrNothing(Bundle w)
        {
                this.wishlist=w;
        }

        /**
         * @return the wishlist
         */
        public Bundle getWishlist() {
                return wishlist;
        }

        /**
         * @param wishlist the wishlist to set
         */
        public void setWishlist(Bundle w) {
                this.wishlist = w;
        }

        @Override
        public Double getUtility(Bundle b) 
        {
                // TODO Auto-generated method stub
                int num=wishlist.size();
                if (b!=null)
                {
                        for (Stack s : b)
                                for (Stack t: wishlist)
                                        if (s.getColor()==t.getColor() && s.getQuantity() >= t.getQuantity())
                                                // if bundle b has any additional stack
                                                // if the quantity is less than what is required, so this stack could not be satisfied
                                                num--;                                                  
                        if (b.getTotalPrice() <= wishlist.getTotalPrice() && num < (double)wishlist.size()*0.25) // i.e. less than 25 percent of the stacks could not be satisfied
                                if (isBuyer(role)) 
                                        return 1.0;
                                else 
                                        return 0.0;
                        else 
                                if (isBuyer(role)) 
                                        return 0.0;
                                else 
                                        return 1.0;
                }
                if (isBuyer(role)) 
                        return 0.0;
                else 
                        return 1.0;
        }


        @Override
        public String toString()
        {
                return this.getClass().getSimpleName();
        }
        
        
        public Boolean isBuyer(String role)
        {
                switch (role.toLowerCase())
                {
                case "buyer": return Boolean.TRUE;
                case "seller": return Boolean.FALSE;
                default:
                        System.out.println("Undefined role!");
                        return null;
                }               
        }

}