public override DataObject Evaluate(DataObject ob1, DataObject ob2, IGroupResolver group, IVariableResolver resolver, IQueryContext context)
{
bool?b1 = ob1.ToBoolean();
bool?b2 = ob2.ToBoolean();
// If either ob1 or ob2 are null
if (!b1.HasValue)
{
return(b2.HasValue && b2.Equals(false) ? DataObject.BooleanFalse : DataObject.BooleanNull);
}
if (!b2.HasValue)
{
return(b1.Equals(false) ? DataObject.BooleanFalse : DataObject.BooleanNull);
}
// If both true.
return(DataObject.Boolean(b1.Equals(true) && b2.Equals(true)));
}
