Using Caché Globals - InterSystems Documentation

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Global Structure• The null string ("") — The current namespace on the local system.• "namespace" — A defined namespace that global is not currently mapped to. Namespace namesare not case-sensitive.• "^^dir" — An implied namespace whose default directory is the specified directory on yourlocal system.• "^system^dir" — An implied namespace whose default directory is the specified directoryon the specified remote system.To access the global ORDER in your current namespace on your current system, when no mappinghas been defined for ORDER, use the following syntax:SET x = ^|""|ORDERThis is the same as the simple global reference:SET x = ^ORDERTo access the global ORDER mapped to the defined namespace MARKETING:SET x = ^|"MARKETING"|ORDERYou can use an implied namespace to access the global ORDER in the directory C:\BUSINESS onyour local system:SET x = ^|"^^C:\BUSINESS"|ORDERYou can use an implied namespace to access the global ORDER in the directory C:\BUSINESS on aremote system named SALES:SET x = ^|"^SALES^C:\BUSINESS"|ORDER14 Using Caché Globals
3Using Multidimensional Storage(Globals)This chapter describes the various operations you can perform using multidimensional storage (globalvariables). It includes the following topics:• Storing Data in Globals• Deleting Global Nodes• Testing the Existence of a Global Node• Retrieving the Value of a Global Node• Traversing Data within a Global• Copying Data within Globals• Maintaining Shared Counters within Globals• Using Temporary Globals• Sorting Data within Globals• Using Indirection with Globals• Managing Transactions• Managing Concurrency• Checking the Most Recent Global ReferenceUsing Caché Globals 15
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