Actually Tomcat does do a reload for the whole Web app when it detects a class update. There's no big magic here. The "reloadable" attribute is only recommended for use during app development, not for production. The feature just saves a click of "restart".
-Jack 2009/1/15 David Jencks <david_jen...@yahoo.com> > I really doubt that pursuing this will turn out to be a good use of our > time -- I fear that it is likely to introduce hard-to-find and fix problems > -- but if anyone wants to look into it.... > > -- a tomcat flag is unlikely to work in geronimo since we are not using any > tomcat class loaders. > > -- I would investigate what tomcat does from this flag and if eclipse has a > similar feature and find out how they work. > > -- I think I recall a jvm feature that lets you replace class definitions > in some circumstances. I've never used it and don't know when it can be > used. > > Basically I don't see how you can reliably replace one class - say a > servlet class - in a web app without restarting the whole web app. There is > going to be at least one instance of the servlet class created, so you need > to stop and recreate the servlet. Assuming it has load-on-startup == 0..... > you have to start the whole web app. > > If people have different perspectives I'd like to hear them :-) > > From a user perspective what I do is to set up a maven build that builds my > app, uses the car-maven-plugin to build it into a geronimo plugin, use the > car-maven-plugin again to build a micro server including my app, and use > selenium to run tests against it in the micro server. > > thanks > david jencks > > On Jan 15, 2009, at 12:12 AM, Jack Cai wrote: > > I also agree that it's nice to have that. But I guess it's not as easy as > just exposing the attribute. As David J. pointed out in another thread, we > are dealing with two containers here. I did a small experiment by adding a > context.xml in Tomcat's conf folder, and set "reloadable=true". Then Tomcat > reports a NullPointerException each time it wants to do class reload. We > need to look deeper into this. > > -Jack > > 2009/1/15 Ivan <xhh...@gmail.com> > >> Currently, it seems that the reload attribute of the context is not >> exported by the TomcatWebAppContext GBean, shall we add this attribute to >> allow the user to set it in the config.xml ?Thanks ! >> >> 2009/1/15 chi runhua <chirun...@gmail.com> >> >> Try deploy --inPlace <yourAppHome>, here is the doc for your >>> information >>> >>> http://cwiki.apache.org/GMOxDOC22/deploy.html#deploy-Deploy >>> >>> Jeff C >>> >>> >>> On Thu, Jan 15, 2009 at 2:36 PM, Kai Fei <boy...@gmail.com> wrote: >>> >>>> Hello, >>>> >>>> My name is Kai, a new geronimo user. I met a small problem when develope >>>> a web application on geronimo. It seems that geronimo won't reload the java >>>> class file when it is replaced. >>>> Here is what I did: >>>> After I deploied a war file, I wanted to change a java class, so I >>>> replaced the old one with a new one, but the application didn't make any >>>> changes. Then I restart the war application, it works. >>>> Is there any way to make geronimo reload the java class file >>>> automaticly? >>>> >>>> I expect that there could be a config file which can enable this >>>> function, but I didn't find... >>>> >>>> Would anyone help? >>>> >>> >>> >> >> >> -- >> Ivan >> > > >
