I substituted the AuthenticationContextProvider with the ContextManager as
proposed by you, but unfortunately I still get a NullPointerException.
the stacktrace is:
java.lang.NullPointerException
at
org.apache.cocoon.components.ContextHelper.getRequest(ContextHelper.java:88)
at
org.apache.cocoon.webapps.session.components.DefaultContextManager.getSession(DefaultContextManager.java:113)
at
org.apache.cocoon.webapps.session.components.DefaultContextManager.existsContext(DefaultContextManager.java:337)
at archivesystem.roles.GetRolesAction.act(GetRolesAction.java:60)
....
The exception in my Action occurs in this
line:
if(contextManager.existsContext(AuthenticationConstants.SESSION_CONTEXT_NAME))
This time the problem seems to be the context object in
DefaultContextManager, which seems to be null.
What I've done wrong?
Is it a good idea to implement the initializable interface and intitialize
the DefaultContextManager there?
Here's my changed source code:
--------------------------------------------------------------------
public class GetRolesAction extends AbstractAction implements ThreadSafe,
Initializable{
protected ContextManager contextManager;
public void initialize() throws Exception {
contextManager = new DefaultContextManager();
}
public Map act(
Redirector redirector,
SourceResolver sourceResolver,
Map objectModel,
String src,
Parameters parameters)
throws Exception {
Map map = null;
//check parameter
final String project = parameters.getParameter("project");
if(project == null){
throw new ProcessingException("GetRolesAction requires the
parameter
'project'.");
}
if (contextManager == null){
throw new NullPointerException("Can't get contextManager.");
}
SessionContext sessionContext =
null;
if(contextManager.existsContext(AuthenticationConstants.SESSION_CONTEXT_NAME)){
sessionContext =
contextManager.getContext(AuthenticationConstants.SESSION_CONTEXT_NAME);
}
else{
throw new NullPointerException("Can't get
sessionContext");
}
map = new HashMap(3);
//check roles
if
(sessionContext.getSingleNode("authentication/rights/projects/[EMAIL
PROTECTED]"+project+"]/admin")!=null)
map.put("admin","true");
else
map.put("admin","false");
/*......*/
}
}
--------------------------------------------------------------------
Thanks a lot for your help in advance,
Regards,
Stephanie
> You should access the context using the ContextManager (in the session
> block). The provider classes are internal "plugins" for the context
> manager to make such custom contexts, like the authentication context,
> available.
>
> HTH
> Carsten
>
> > -----Original Message-----
> > From: Stephanie Zohner [mailto:[EMAIL PROTECTED]
> > Sent: Monday, July 19, 2004 2:34 PM
> > To: [EMAIL PROTECTED]
> > Subject: HELP! Custom Action using AuthenticationContext
> >
> >
> > Hi all,
> >
> >
> > Sorry for double posting but I got no anwers in the users
> > list, so I hope that one of you java gurus can help me.
> >
> >
> > I get a NullPointerException in my GetRolesAction.
> >
> > With my action I want to make the user roles available to the
> > sitemap. The roles are stored in the Authentication Context.
> >
> > All I want to do is read out the roles from the
> > Authentication context and put it in the map that is returned
> > to the sitemap.
> >
> > However I get a NullPointerException when retrieving the
> > authentication context.
> > I "followed" the exception to the Class
> > AuthenticationContextProvider. I guess the problem is that
> > the ServiceManager is not initialized, but is null.
> >
> > How can I make my Code working? Do I have to call the
> > service() method of the AuthenticationContextProvider to set
> > the serviceManager instance??
> >
> > Thanks alot for bringing light into my darkness,
> >
> > Regards,
> >
> > Stephanie
> >
> > P.S.: Code and Exception Text see below:
> >
> > ______________________________________________________________
> > __________
> >
> > public class GetRolesAction extends AbstractAction implements
> > ThreadSafe, Initializable{
> >
> > protected AuthenticationContextProvider contextProvider;
> >
> > public void initialize() throws Exception {
> > contextProvider = new AuthenticationContextProvider();
> > }
> >
> >
> > public Map act(
> > Redirector redirector,
> > SourceResolver sourceResolver,
> > Map objectModel,
> > String src,
> > Parameters parameters)
> > throws Exception {
> >
> > Map map = null;
> >
> > //check parameter
> > final String project =
> > parameters.getParameter("project");
> > if(project == null){
> > throw new
> > ProcessingException("GetRolesAction requires the parameter
> > 'project'.");
> > }
> > if (contextProvider == null){
> > throw new NullPointerException("Can't
> > get contextProvider.");
> > }
> > AuthenticationContext
> > sessionContext
> > =
> > null;
> >
> >
> > if(contextProvider.existsSessionContext(AuthenticationConstant
> > s.SESSION_CONTEXT_NAME)){
> >
> > sessionContext
> > =
> > (AuthenticationContext)
> > contextProvider.getSessionContext(AuthenticationConstants.SESS
> > ION_CONTEXT_NAME);
> > }
> > else{
> > throw new
> > NullPointerException("Can't get sessionContext");
> > }
> >
> > map = new
> > HashMap(3);
> > //check
> > roles
> > if
> > (sessionContext.getSingleNode("authentication/rights/projects/
> > [EMAIL PROTECTED]"+project+"]/admin")!=null)
> > map.put("admin","true");
> > else
> > map.put("admin","false");
> >
> > if
> > (sessionContext.getSingleNode("authentication/rights/projects/
> > [EMAIL PROTECTED]"+project+"]/developer")!=null)
> > map.put("developer","true");
> > else
> > map.put("developer","false");
> >
> > if
> > (sessionContext.getSingleNode("authentication/rights/projects/
> > [EMAIL PROTECTED]"+project+"]/guest")!=null)
> > map.put("guest","true");
> > else
> > map.put("guest","false");
> >
> > return
> > map;
> > }
> >
> > }
> > --------------------------------------------------------------
> > ----------
> >
> >
> > java.lang.NullPointerException
> >
> > at
> > org.apache.cocoon.webapps.authentication.context.Authenticatio
> > nContextProvider.getSessionContext(AuthenticationContextProvid
> > er.java:97)
> >
> > at
> > archivesystem.roles.GetRolesAction.act(GetRolesAction.java:57)
> >
> > at
> > org.apache.cocoon.components.treeprocessor.sitemap.ActTypeNode
> > .invoke(ActTypeNode.java:152)
> >
> > at
> > org.apache.cocoon.components.treeprocessor.AbstractParentProce
> > ssingNode.invokeNodes(AbstractParentProcessingNode.java:84)
> >
> > ....
> > --------------------------------------------------------------
> > ------------
> >
> > My Sitemap snippet
> >
> > <map:match pattern="protected-*">
> > <map:act type="auth-protect">
> > <map:match pattern="protected-delivery">
> > <map:generate type="request"/>
> > <map:act type="getRoles">
> > <map:parameter name="project"
> > value="{session-attr:project}"/>
> > <map:select type="parameter">
> > <map:parameter name="parameter-selector-test"
> > value="{admin}"/>
> > <map:when test="true">
> > <map:transform type="xslt"
> > src="stylesheets/deliveries.xsl"/>
> > </map:when>
> > <map:otherwise>
> > <map:transform type="xslt"
> > src="stylesheets/deliveries-readonly.xsl"/>
> > </map:otherwise>
> > </map:select>
> > <map:serialize type="html"/>
> > </map:act>
> > </map:match>
> > </map:act>
> > </map:match>
> >
> >
> > --------------------------------------------------------------
> > ------------
> >
> >
>
--
