@Override
public T eval(List<String> tuple) {
double result = 0;
for (ValueExpression factor : _veList) {
Object currentVal = factor.eval(tuple);
NumericConversion currentType = (NumericConversion) (factor.getType());
result += currentType.toDouble(currentVal);
}
return _wrapper.fromDouble(result);
}
@Override
public T eval(List<String> tuple) {
final ValueExpression firstVE = _veList.get(0);
final Object firstObj = firstVE.eval(tuple);
final NumericConversion firstType = (NumericConversion) firstVE.getType();
double result = firstType.toDouble(firstObj);
for (int i = 1; i < _veList.size(); i++) {
final ValueExpression currentVE = _veList.get(i);
final Object currentObj = currentVE.eval(tuple);
final NumericConversion currentType = (NumericConversion) currentVE.getType();
result -= currentType.toDouble(currentObj);
}
return _wrapper.fromDouble(result);
}