New subject: [xwiki-users] groovy & context

6 Sep 2006

Hi,

I try to save a Java- object to the context with groovy:

<%
test=context.getContext().get("test");
if(test==null)
  println "test is null"
else
  println "test is not null"
context.getContext().put("test",new Object());
%>

If you reload the page the object should be in the context and the output
should be "test is not null". But unfortunately I get "test is null".

I also tried it with the Servlet-Context like this:

<%
scontext=context.getRequest().getSession().getServletContext();
test=scontext.get("test");
if(test==null)
  println "test is null"
else
 println "test is not null"
scontext.put("test",new Object())
%>

Then I get an exception: java.lang.NoClassDefFoundError:
org/apache/catalina/session/StandardSessionFacade

This class is in the catalina.jar which is located in tomcat/server/lib and
the documentation of tomcat says:  These classes and resources are TOTALLY
invisible to web applications. 
I copied catalina.jar to WEB-INF/lib but then I get a ClassCastException:

java.lang.ClassCastException:
org.apache.catalina.session.StandardSessionFacade

I guess this is because of different ClassLoaders. 

How can I save a Java-Object to a session?

Thanks
Barbara

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