Hi Oscar, Yes, the are many similarities between traits and contributions. In fact I've often thought that Isis is in some regards more of an aspect-oriented framework than an object - oriented frameworks. At the system level it implements presentation logic as a cross - cutting concern, sell as the more usual security, transactions and auditing.
Using the event bus one can also book into these pointcuts at an application level. Cheers, Dan. On 6 Sep 2014 18:01, "QUALITEC - Óscar Bou" <o...@qualitec.es> wrote: > > Hi to all. > > Just to notice that I've been reading recently about the concept of > "traits" [1] and "mixins" [2], as a way to encourage code reuse avoiding > inheritance problems. > > This language features are supported by languages like Ada, Groovy, Scala > or Python, but there's no native support for Java. > > It's REALLY noticeable that we, as Apache Isis users, have somewhat an > implementation of those concepts by means of contributions [3]. > > So, can we think about contributions as a "traits" or "mixins" > implementation for Apache Isis developed systems? > > > Regards, > > Oscar > > > > [1] http://en.wikipedia.org/wiki/Trait_(computer_programming) > > [2] http://en.wikipedia.org/wiki/Mixin > > [3] > http://isis.apache.org/more-advanced-topics/how-to-01-062-How-to-decouple-dependencies-using-contributions.html
