/**
* Iterates a collection, and sums the Money elements contained in the specified property of each
* object.
*
* <p>Nulls are excluded from the addition.
*
* @param <T> Type of elements in the collection.
* @param collection Collection to iterate.
* @param clazz Type of elements in the collection.
* @param property Name of the property that contains the money element.
* @param currency Currency of the money elements.
* @return Returns the sum.
*/
public static <T> Money sum(
Collection<T> collection, Class<T> clazz, String property, Currency currency) {
PropertyDescriptor pd = JavaBeanUtils.getPropertyDescriptor(clazz, property);
MoneyCalculator calc = new MoneyCalculator(currency, false);
for (T t : collection) {
Money money = (Money) JavaBeanUtils.getProperty(pd, t);
if (money != null) {
calc.add(money);
}
}
return calc.getResult();
}
