If anyone is interested in this sort of "overlay" using facelets, see https://facelets.dev.java.net/servlets/ReadMsg?list=users&msgNo=546 and others in that thread.
Dave Brondsema wrote: > Without facelets, I think you'd need to extend myfaces' view handler > (org.apache.myfaces.application.jsp.JspViewHandlerImpl) and specify to > use that in faces-config.xml In your custom view handler, you'd have > to load the file from the base app jar and feed the content into some > protected method of JspViewHandlerImpl. If this is possible at all, I > think that's the basic idea of how you'd do it. > > I'm looking into something very similar and am now pursing facelets for > other reasons (http://www.onjava.com/pub/a/onjava/2004/06/09/jsf.html). > I think for facelets it would be different; I'm just getting into this > issue today. It seems that the facelets' view handler > (com.sun.facelets.FaceletViewHandler) uses a FaceletFactory, in which we > could override the getFacelet method. > > In all these cases, I'm assuming that we'd use a special view-id (e.g. > "/the-parent/page3") which our custom code would resolve to pull from > the jar file. > > Richard Wallace wrote: > >>I was wondering if maybe Tiles could help me out here. I looked into it >>but I'm not 100% sure how it would work. I mean, optimally, the JSPs >>and other resources from the base app would be bundled in a jar. Tiles >>would look in the normal location for the JSP file, so >>$CATALINA_HOME/webapps/mywebapp/ and then look on the classpath for the >>resource. From what I saw when I was looking at Tiles, it didn't say >>anything about being able to do anything like this. Maybe someone can >>fill me in or point me in the right direction on where to look for this? >> >>Thanks, >>Rich >> >>Mike Kienenberger wrote: >> >> >>>Have you looked into some kind of templating layer such as using >>>facelets or Tiles? >>> >>>You'd have the configurable aspects as separate resources. >>> >>>On 9/6/05, Richard Wallace <[EMAIL PROTECTED]> wrote: >>> >>> >>> >>>>Hey everyone, >>>> >>>>I've got an interesting question that came up while working on my last >>>>project that I'm hoping someone has an answer to. Basically, the >>>>situation is that there is a base webapp that has all the basic features >>>>of the application. But, we plan on licensing it to clients and do some >>>>customization for them, like custom user registration system, custom >>>>skinning, etc. The thing is that most of the JSPs and other resources >>>>from the base webapp can remain the same but a few will need to change >>>>(logos, css, etc.). >>>> >>>>Right now we don't have a good way of doing this other than to copy ALL >>>>the JSPs over from the base into the sub-projects and modify only those >>>>that need it. The problem we're running into is that adding features to >>>>the base webapp and propagating them to the sub-projects is quickly >>>>becoming a major PITA. >>>> >>>>What I was thinking was that it would be nice if there was a way to do >>>>something like an "overlay" of the webapp. So that the base webapp >>>>would be unrolled first and then the sub-projects webapp would be rolled >>>>out over top of that replacing any files that were modified and keeping >>>>anything that wasn't. That way we would only have to maintain JSPs and >>>>resources in the sub-project that are specific to that clients >>>>customizations. >>>> >>>>Is there anything out there that solves this problem already? Have >>>>others run into this and what have you done? Any input would be >>>>appreciated. >>>> >>>>Thanks. >>>> >>>>Rich >>>> >>>> >>>> >>>> >> >> > > -- Dave Brondsema Software Developer Cornerstone University
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