Java


Software Versioning Is Complex Or Am I Imagining It?

So it seems everyone and his dog are talking about versioning at the moment. Specifically the proposed version numbering systems used in OSGi and JSR 277 and their ability to coexist (or not).

For my own part I personally favor the OSGi scheme because to my mind it is simpler and better defined.

The OSGi scheme says that there are three numbers used in a version, major.minor.micro -> 1.2.1. The micro version is incremented when ever there are bug fixes. The minor version is incremented when there are backwards compatible additions and the major version is incremented when there are any non backwards compatible changes. It is also possible to add postfix elements to an OSGi version i.e. 1.2.1_20080608 (todays date appended). These postfix elements are considered lexicographically to mean increments/improvements which do not warrant a version update – i.e. nightly builds etc.

When a module consumer wishes to specify a version they wish to (more…)


A JSR To Far?

So there’s a lot of conversation going on around the both the politics and the technological issues surrounding JSR 277. Personally I think the spec is doomed if it doesn’t start working much more closely with the OSGi community – and here’s why.

The OSGi community now comprises almost all the major software vendors who have been expending significant effort working on the OSGi specifications and OSGi enabling their applications over a number of years. The JSR is currently stalled and taking advice predominantly from Sun internal researchers. (more…)