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GUIDs (Globally Unique Identifiers)

Work with GUIDs (Globally Unique Identifiers).

Background Information

A GUID (globally unique identifier) is a unique reference number used as an identifier.

Available Tools

GUIDENABLED class parameter
Enables you to generate a GUID for each instance of the class. See “Object Synchronization” in Using Caché Objects.
This class is a persistent class that gives you access to GUID,OID value pairs. This class can be queried using SQL. This class presents examples.
Availability: All namespaces.
%GUID class
Provides utility methods for GUIDs. These include:
  • %FindGUID()
  • AssignGUID()
  • And others
Availability: All namespaces.
Includes the following method:
  • CreateGUID()
Availability: All namespaces.

Reminder

The special variable $SYSTEM is bound to the %SYSTEM package. This means that (for ObjectScript) instead of
##class(%SYSTEM.class).method()
, you can use
$SYSTEM.class.method()
.
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