Dependency injection refined by extra-functional properties

Abstract

The Dependency Injection has been widely implemented in a lot of frameworks to decouple software parts. However, current frameworks use simple matching algorithms to determine candidates to be injected. For instance, Spring does type-based matching, optionally enriched with a qualifier string. This is limiting mainly in dynamic systems where a lot of candidates may exist. As a result, the matching fails and developer's interaction is needed. In this work, we propose to enrich Dependency Injection with extra-functional properties serving as additional parameters of the matching algorithm to reliably select the most suitable candidate.