InterSystems Programming Tools Index
GUIDs (Globally Unique Identifiers)
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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.
%ExtentMgr.GUID class
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:
Availability: All namespaces.
%SYSTEM.Util class
Includes the following method:
Availability: All namespaces.
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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