INTERFACE-ID paragraph

Function

The INTERFACE-ID paragraph indicates that this Identification Division introduces an interface definition and specifies the interface name and its attributes.

Format

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INTERFACE-ID. interface-name-1
   [INHERITS FROM {interface-name-2}...]
   [USING {parameter-name-1}...].

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Syntax rules

1. interface-name-1 must not be either BASEFACTORYINTERFACE or BASEINTERFACE.

2. interface-name-2 is the name of an interface, which must be specified in the REPOSITORY paragraph.

3. interface-name-2 may not inherit directly or indirectly from interface-name-1.
   interface-name-2 may not inherit directly or indirectly from an interface which is an expansion of interface-name-1.

4. If a given method-name is inherited from more than one interface, then each of these methods must have the same interface.

5. parameter-name-1 is the name of a class or interface which must be defined in the REPOSITORY paragraph.

6. The same parameter-name-1 may not occur more than once in a USING clause.

7. parameter-name-1 must be different from interface-name-1.

General rules

1. interface-name-1 names the interface declared by this interface definition.

2. The INHERITS phrase specifies the names of interfaces that are inherited by interface-name-1 according to the rules for interface inheritance.

3. The USING clause specifies this interface as a parameterized interface and lists the names of the parameters.