/// <summary>
/// Cria um predicado para a lógica OR.
/// </summary>
/// <param name="lhsPred">Predicado da esquerda.</param>
/// <param name="rhsPred">Predicado da direita.</param>
/// <returns></returns>
public static Predicate CreateLogicalOrPredicate(Predicate lhsPred, Predicate rhsPred)
{
if (lhsPred.Equals(TRUE_PREDICATE) || rhsPred.Equals(TRUE_PREDICATE))
{
return(TRUE_PREDICATE);
}
if (lhsPred.Equals(FALSE_PREDICATE))
{
return(rhsPred);
}
if (rhsPred.Equals(FALSE_PREDICATE))
{
return(lhsPred);
}
LogicalAndPredicate predicate = null;
if (lhsPred is LogicalAndPredicate)
{
predicate = lhsPred as LogicalAndPredicate;
}
if ((predicate == null) || !predicate.Inverse)
{
predicate = new LogicalAndPredicate();
predicate.Invert();
predicate.Children.Add(lhsPred);
}
predicate.Children.Add(rhsPred);
return(predicate);
}
/// <summary>
/// Compara com outra instancia.
/// </summary>
/// <param name="obj"></param>
/// <returns></returns>
public int CompareTo(object obj)
{
if (obj is LogicalAndPredicate)
{
LogicalAndPredicate predicate = (LogicalAndPredicate)obj;
if ((base.Inverse == predicate.Inverse) && (_members.Count == predicate._members.Count))
{
for (int i = 0; i < _members.Count; i++)
{
if (_members[i] != predicate._members[i])
{
return(-1);
}
}
return(0);
}
}
return(-1);
}
