Accessing session variables in the sitemap.xmap

[Heiko Milke]

Hello,   I want my application to work like the following.     <map:match pattern="xsp/example.xsp">     <map:generate src="" type="serverpages"/>     <map:transform src=""/>     <map:serialize/> </map:match>     1. the serverpages generator accesses a script named "xsp/example.xsp" Withing this script a session variable named "selected_stylesheet" is set.   <xsp-session:set-attribute name="selected_stylesheet">xsp/example.xsl</.....   2. In the next step i want to transform the generated data using the stylesheet whose path is stored in the session variable.   3. finally i want to serialize and close the pipe.     This one is not working. Cocoon complains about a resource that cannot be found. Actually it can't find  the stylesheet. Its all about coming to the page for the first time. Im creating the session in the serverpages - generator. But somehow the sitemap doesnt get it.   -------------------------------   Thats why i did this one right here :   <map:match pattern="xsp/session-test">     <map:generate src="" type="serverpages"/>     <map:act type="session-validator">         <map:parameter name="descriptor" value="descriptors/params.xml"/>         <map:parameter name="validate" value="selected_stylesheet"/>         <map:transform src=""/>     </map:act>     <map:serialize/> </map:match>     the descriptor file looks like this:   <parameters-descriptor>   <parameter name="selected_stylesheet" type="string" nullable="yes" default="xsp/example.xsl"/> </parameters-descriptor>     I expected cocoon to find out that, when coming to the page for the first time, even if there is no "selected_stylesheet", that it can get the default parameter  from the descriptor and get lucky.     This one aint working too.   What am I supposed to do to make it work ? Maybe it would be a good idea to create the session earlier, maybe before i enter the pipe but i dont know how to do that.     Thanks in advance   Heiko.