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This is documentation for Caché & Ensemble.

For information on converting to InterSystems IRIS, see the InterSystems IRIS Adoption Guide and the InterSystems IRIS In-Place Conversion Guide, both available on the WRC Distributions page (login required).

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Final

Specifies whether this class is final (cannot have subclasses).

Usage

To specify that a class is final, use the following syntax:

Class MyApp.Exam As %Persistent [ Final ]  { //class members }

Otherwise, omit this keyword or place the word Not immediately before the keyword.

Details

If a class is final, it cannot have subclasses.

Also, if a class is final, the class compiler may take advantage of certain code generation optimizations (related to the fact that instances of a final class cannot be used polymorphically).

Default

If you omit this keyword, the class definition is not final.

See Also