3.2. IMPORTing Symbols
Connected: An Internet Encyclopedia
3.2. IMPORTing Symbols
Up:
Connected: An Internet Encyclopedia
Up:
Requests For Comments
Up:
RFC 1902
Up:
3. Information Modules
Prev: 3.1.1. Textual Clauses
Next: 3.3. Exporting Symbols
3.2. IMPORTing Symbols
3.2. IMPORTing Symbols
To reference an external object, the IMPORTS statement must be used
to identify both the descriptor and the module in which the
descriptor is defined, where the module is identified by its ASN.1
module name.
Note that when symbols from "enterprise-specific" information modules
are referenced (e.g., a descriptor), there is the possibility of
collision. As such, if different objects with the same descriptor
are IMPORTed, then this ambiguity is resolved by prefixing the
descriptor with the name of the information module and a dot ("."),
i.e.,
"module.descriptor"
(All descriptors must be unique within any information module.)
Of course, this notation can be used even when there is no collision
when IMPORTing symbols.
Finally, the IMPORTS statement may not be used to import an ASN.1
named type which corresponds to either the SEQUENCE or SEQUENCE OF
type.
Next: 3.3. Exporting Symbols
Connected: An Internet Encyclopedia
3.2. IMPORTing Symbols
|