OpenH323 1.18.0
OpalGloballyUniqueID Class Reference

#include <guid.h>

List of all members.

Public Member Functions

Construction
 OpalGloballyUniqueID ()
 OpalGloballyUniqueID (const char *cstr)
 OpalGloballyUniqueID (const PString &str)
 OpalGloballyUniqueID (const PASN_OctetString &ostr)
Overrides from PObject
virtual void PrintOn (ostream &strm) const
virtual void ReadFrom (istream &strm)
virtual PObject * Clone () const
virtual PINDEX HashFunction () const
Operations
PString AsString () const
BOOL IsNULL () const
bool operator! () const

Detailed Description

Globally unique ID definition. This implements a 128 bit globally unique ID as required by many protocols and software systems. The value is constructed in such a way as to make a duplicate anywhere in the world highly unlikely.


Constructor & Destructor Documentation

OpalGloballyUniqueID::OpalGloballyUniqueID ( )

Create a new ID. The ID created with this will be initialised to a globally unique ID as per specification.

OpalGloballyUniqueID::OpalGloballyUniqueID ( const char *  cstr)

Create an ID from a C string of hex (as produced by AsString()). A useful construct is to construct a OpalGloballyUniqueID() with NULL which produces an all zero GUID, etectable with the isNULL() function.

Parameters:
cstrC string to convert
OpalGloballyUniqueID::OpalGloballyUniqueID ( const PString &  str)

Create an ID from a PString of hex (as produced by AsString()).

Parameters:
strString of hex to convert
OpalGloballyUniqueID::OpalGloballyUniqueID ( const PASN_OctetString &  ostr)

Create an ID from an octet string in an ASN PDU.

Parameters:
ostrOctet string from ASN to convert

Member Function Documentation

PString OpalGloballyUniqueID::AsString ( ) const

Convert the ID to human readable string.

virtual PObject* OpalGloballyUniqueID::Clone ( ) const [virtual]

Create a clone of the ID. The duplicate ID has the same value as the source. Required for having this object as a key in dictionaries.

virtual PINDEX OpalGloballyUniqueID::HashFunction ( ) const [virtual]

Get the hash value for the ID. Creates a number based on the ID value for use in the hash table of a dictionary. Required for having this object as a key in dictionaries.

BOOL OpalGloballyUniqueID::IsNULL ( ) const

Test if the GUID is null, ie consists of all zeros.

Referenced by operator!().

bool OpalGloballyUniqueID::operator! ( ) const [inline]

References IsNULL().

virtual void OpalGloballyUniqueID::PrintOn ( ostream &  strm) const [virtual]

Standard stream print function. The PObject class has a << operator defined that calls this function polymorphically.

Parameters:
strmStream to output text representation
virtual void OpalGloballyUniqueID::ReadFrom ( istream &  strm) [virtual]

Standard stream read function. The PObject class has a >> operator defined that calls this function polymorphically.

Parameters:
strmStream to output text representation

The documentation for this class was generated from the following file: