public int compareTo(Object obj) {
if (obj == null) {
return -1;
}
ShoppingCart shoppingCart = (ShoppingCart) obj;
String pk = shoppingCart.getPrimaryKey();
return getPrimaryKey().compareTo(pk);
}
public boolean equals(Object obj) {
if (obj == null) {
return false;
}
ShoppingCart shoppingCart = null;
try {
shoppingCart = (ShoppingCart) obj;
} catch (ClassCastException cce) {
return false;
}
String pk = shoppingCart.getPrimaryKey();
if (getPrimaryKey().equals(pk)) {
return true;
} else {
return false;
}
}