> From: [EMAIL PROTECTED] [mailto:volker.schmitt@basf-it- > > > Hi,
Volker, > I am using JXPath in my Taglib implementation, description is in > http://www.mail-archive.com/cocoon-dev@xml.apache.org/msg16919.html > > I have written a out Tag which can be used to get/set variables in > request/session or context like > <jxpath:out var="$session/name" value="$request/person/name" /> > The first step is selection of the person attribute on the request, if person > is > a Object the getName Method is called and the result is stored as a session > attribute. It is also possible that the person attribute is a DOM-Node, then > the > content of the name Element is selected. > If you write: > <jxpath:out value="$request/person/name" /> > The value is written to the SAX-Pipeline instead of putting it to a variable. > Look at org.apache.cocoon.taglib.jxpath.core.OutTag. > > session,request and application are predefined variables. The Implementation > of > the variable management is already part of the scratchpad > (org.apache.cocoon.jxpath). JXPathCocoonContexts.java is a > RequestLifecycleComponent which manages the different variable context. This > Component can be used independant of the taglib implementation. > > In September (after my vacation in August) I plan to implement a > "ExpressionFactory" to make it posible to plugin different Expression > languages > to Cocoon like JSTL, JXPath or Jexl (commons-sandbox). In my current Tag > implementation the variable management is impl. in the > org.apache.cocoon.taglib.VarTagSupport class, which itself uses > JXPathCocoonContexts. I plan to implement this functionality as a generic > Avalon > Component, so everyone and of course my taglib, can use it to access variables > from session/request/applicationcontext .... using diffent expression > languages. > > What do you think? How your Tags are relate/compare to Jelly tags? Can this be unified in one approach? Vadim > > Regards, > > Volker > ... --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, email: [EMAIL PROTECTED]
