Appendix A. Using OSGi Services to Dynamically Wire Applications
This appendix will present OSGi services as a means of communicating and connecting applications. Unlike the Eclipse extension point mechanism, OSGi services can have multiple versions available at runtime and can work in other OSGi environments, such as Felix or other commercial OSGi runtimes.
Services overview
In an Eclipse or OSGi runtime, each individual bundle is its own separate module, which has explicit dependencies on library code via Import-Package, Require-Bundle, or Require-Capability. These express static relationships and provide a way of configuring the bundle's classpath.
However, this presents a problem. If services are independent, how can they use contributions provided ...
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