A Property-Based Method for Selecting Among
Multiple Implementations of Modules
Christian S. Collberg and Magnus G. Krampell
Department of Computer Sciences,
Lund University,
S-221 00 Lund, Sweden.
collberg@dna.lth.se
Abstract
A method for automatic selection among multiple implementations in a
modular language is presented. The method assumes, in keeping with the
principle of information hiding, that only the specification part of a
module is available to a user of a module. In each implementation a list
of properties is included which describes the specifics of that implementation.
The user of a module gives a "wish list" where she specifies what kind of
implementation she wants for her particular application and the system will
match the user's list of requirements against the available implementations and
choose the most appropriate one. To aid users and module implementers a set
of key-words that may be used to describe an implementation is included in
the specification part of the module. An algorithm for selection of the most
appropriate implementation is proposed together with an example.
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