public override IPermission Union(IPermission target)
{
#if (debug)
Console.WriteLine("************* Entering Union *********************");
#endif
if (target == null)
{
return(this);
}
#if (debug)
Console.WriteLine("This is = " + (( NameIdPermission)this).Name);
Console.WriteLine("Target is " + (( NameIdPermission)target).m_Name);
#endif
if (!VerifyType(target))
{
throw new ArgumentException(String.Format("Argument_WrongType", this.GetType().FullName));
}
NameIdPermission operand = ( NameIdPermission)target;
if (operand.IsSubsetOf(this))
{
return(this.Copy());
}
else if (this.IsSubsetOf(operand))
{
return(operand.Copy());
}
else
{
return(null);
}
}
public override bool IsSubsetOf(IPermission target)
{
#if (debug)
Console.WriteLine("************* Entering IsSubsetOf *********************");
#endif
if (target == null)
{
Console.WriteLine("IsSubsetOf: target == null");
return(false);
}
#if (debug)
Console.WriteLine("This is = " + (( NameIdPermission)this).Name);
Console.WriteLine("Target is " + (( NameIdPermission)target).m_Name);
#endif
try
{
NameIdPermission operand = ( NameIdPermission)target;
// The following check for unrestricted permission is only included as an example for
// permissions that allow the unrestricted state. It is of no value for this permission.
if (true == operand.m_Unrestricted)
{
return(true);
}
else if (true == this.m_Unrestricted)
{
return(false);
}
if (this.m_Name != null)
{
if (operand.m_Name == null)
{
return(false);
}
if (this.m_Name == "")
{
return(true);
}
}
if (this.m_Name.Equals(operand.m_Name))
{
return(true);
}
else
{
// Check for wild card character '*'.
int i = operand.m_Name.LastIndexOf("*");
if (i > 0)
{
string prefix = operand.m_Name.Substring(0, i);
if (this.m_Name.StartsWith(prefix))
{
return(true);
}
}
}
return(false);
}
catch (InvalidCastException)
{
throw new ArgumentException(String.Format("Argument_WrongType", this.GetType().FullName));
}
}
static void Main(string[] args)
{
NameIdPermission nameIdPermission = new NameIdPermission("Donal");
IPermission otherPermission = nameIdPermission.Copy();
nameIdPermission.IsSubsetOf(otherPermission);
nameIdPermission.Intersect(otherPermission);
nameIdPermission.Union(otherPermission);
Console.WriteLine(nameIdPermission.ToXml());
Console.Read();
}