Extracting library-based object-oriented applications
In an increasingly popular model of software distribution,
software is developed in one computing environment and
deployed in other environments by transfer over the internet.
Extraction tools perform a static whole-program analysis to
determine unused functionality in applications in order to
reduce the time required to download applications.
We have identified a number of scenarios where extraction tools
require information beyond what can be inferred through
static analysis: software distributions other than complete
applications, the use of reflection, and situations where an
application uses separately developed class libraries.
This paper explores these issues, and introduces a modular
specification language for expressing the information required
for extraction. We implemented this language in the context
of Jax, an industrial-strength application extractor for Java,
and present a small case study in which different extraction
scenarios are applied to a commercially available library-based
application.
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