InterSystems Programming Tools Index
Namespaces
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Get information about Caché namespaces programmatically; query for list of namespaces.
Background Information
In Caché, any code runs within a namespace. A namespace provides access to data and to code, which is stored (typically) in multiple database files. For an introduction, see Namespaces and Databases in the Caché Programming Orientation Guide.
Typically you create and configure namespaces via the Management Portal. See Configuring Namespaces in the chapter “Configuring Caché” in the Caché System Administration Guide.
Available Tools
%SYS.Namespace class
Provides the following class methods:
This class also provides the following query:
Availability: All namespaces.
%SYSTEM.SYS class
Includes the following class method:
Availability: All namespaces.
Config.Namespaces class
Enables you to modify and obtain information about the [Namespaces] section of the CPF file. (Note that you usually perform this configuration via the Management Portal, as noted above.)
The class also provides the List() class query. The class documentation includes examples and details.
Availability: %SYS namespace.
%Installer.Manifest class and other classes in the %Installer package
Enable you to define and use an installation manifest. Among other tasks, you can configure namespaces.
Availability: All namespaces.
%Library.EnsembleMgr class
Provides the EnableNamespace() method, which you can use to enable a namespace to work with Ensemble. This is useful if you create namespaces programmatically.
Do not use this method to repair a damaged namespace. In the event of a damaged namespace, contact the InterSystems Worldwide Response Center (WRC) for assistance.
Ignore all other methods in this class.
Availability: %SYS namespace.
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().