pretty cool! thanks! Matthias
On Thu, Aug 27, 2009 at 12:57 PM, Werner Punz<werner.p...@gmail.com> wrote: > Hello everyone, here is a small bomb I am dropping, some might have > noticed already by the Jira entries. > > This minute I committed a first preliminary working version of the > Java!!! reloading code. > It still is rough and has limitations, but it works already for expanded > webapps. > > Ok here is how it goes: I basically just dynamically recompile the > objects on the fly and try to save attributes of the old instance > in the new one. Since JSF has introspection left and right, this works > out pretty well. > > If you check out the web.xml of the provided example you can find two > config entries which you can use to point towards your real source > paths, otherwise WEB-INF/groovy and WEB-INF/java is picked up as source > path. > > You can run after adjusting your web.xml the example via > mvn:jetty-run:exploded and you can edit the provided java classes > of the example (TestBean under WEB-INF/java and its dependencies) > on the fly and what the code being recompiled on the fly > and new adjustments being applied without server restarts! > > Following limitations are present for now > > a) Statically compiled java code can only call the dynamic one either by > using introspection or by using interfaces, otherwise you will > get class cast exceptions even if the classname of the dynamic class > does not change (the engine sees two classes both having the same name > but are different) > > b) You can run currently only in webapp environments (EAR for now is not > fully supported) and exploded, I will work out those limitations in the > long run, but for now I am happy that it even works! > > > Happy hacking > > Werner > > > -- Matthias Wessendorf blog: http://matthiaswessendorf.wordpress.com/ sessions: http://www.slideshare.net/mwessendorf twitter: http://twitter.com/mwessendorf
