static public 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 inc = null;
if (lhsPred is LogicalAndPredicate)
{
inc = lhsPred as LogicalAndPredicate;
}
if (inc == null || !inc.Inverse)
{
inc = new LogicalAndPredicate();
inc.Invert();
inc.Children.Add(lhsPred);
}
inc.Children.Add(rhsPred);
return(inc);
}
public int CompareTo(object obj)
{
if (obj is LogicalAndPredicate)
{
LogicalAndPredicate other = (LogicalAndPredicate)obj;
if (Inverse == other.Inverse)
{
if (members.Count == other.members.Count)
{
for (int i = 0; i < members.Count; i++)
{
if (members[i] != other.members[i])
{
return(-1);
}
}
return(0); //members.CompareTo(other.members);
}
}
}
return(-1);
}
