boon/src/main/java/org/boon/criteria/ObjectFilter.java
public static Criteria createCriteriaFromClass(String name, Class<?> cls, Operator operator,  List<?> values) {

        if (operator == Operator.AND) {
            return new Group.And(cls, values);
        } else if (operator == Operator.OR) {

            return new Group.Or(cls, values);
        } else {
            FieldAccess fieldAccess = BeanUtils.idxField(cls, name);
            return createCriteria(name, operator, fieldAccess.typeEnum(), (Class<Object>) fieldAccess.type(), values);
        }
    }
public static Criteria createCriteriaFromClass(String name, Class<?> cls, Operator operator,  List<?> values) {

        if (operator == Operator.AND) {
            return new Group.And(cls, values);
        } else if (operator == Operator.OR) {

            return new Group.Or(cls, values);
        } else {
            FieldAccess fieldAccess = BeanUtils.idxField(cls, name);
            return createCriteria(name, operator, fieldAccess.typeEnum(), (Class<Object>) fieldAccess.type(), values);
        }
    }
Make criteria configurable
@param operator
@param values
@return