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Posted to users@cocoon.apache.org by Stephanie Zohner <st...@gmx.at> on 2004/07/19 10:28:16 UTC
HELP! Custom Action using AuthenticationContext
Hi all,
I get a NullPointerException in my GetRolesAction, hope somebody of you guys
can help me.
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(AuthenticationConstants.SESSION_CONTEXT_NAME)){
sessionContext =
(AuthenticationContext)
contextProvider.getSessionContext(AuthenticationConstants.SESSION_CONTEXT_NAME);
}
else{
throw new NullPointerException("Can't get sessionContext");
}
map = new HashMap(3);
//check
roles
if
(sessionContext.getSingleNode("authentication/rights/projects/project[@name="+project+"]/admin")!=null)
map.put("admin","true");
else
map.put("admin","false");
if
(sessionContext.getSingleNode("authentication/rights/projects/project[@name="+project+"]/developer")!=null)
map.put("developer","true");
else
map.put("developer","false");
if
(sessionContext.getSingleNode("authentication/rights/projects/project[@name="+project+"]/guest")!=null)
map.put("guest","true");
else
map.put("guest","false");
return
map;
}
}
------------------------------------------------------------------------
java.lang.NullPointerException
at
org.apache.cocoon.webapps.authentication.context.AuthenticationContextProvider.getSessionContext(AuthenticationContextProvider.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.AbstractParentProcessingNode.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>
--------------------------------------------------------------------------
---------------------------------------------------------------------
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RE: HELP! Custom Action using AuthenticationContext
Posted by Carsten Ziegeler <cz...@s-und-n.de>.
Hi,
you have to lookup the components using Avalon; you never should
instantiate them yourself. Search around the code where ContextManager
is used and you will see what I mean.
Carsten
> -----Original Message-----
> From: Stephanie Zohner [mailto:stephanie.zohner@gmx.at]
> Sent: Monday, July 19, 2004 5:00 PM
> To: dev@cocoon.apache.org
> Subject: RE: HELP! Custom Action using AuthenticationContext
>
> 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(ContextH
> elper.java:88)
> at
> org.apache.cocoon.webapps.session.components.DefaultContextMan
> ager.getSession(DefaultContextManager.java:113)
> at
> org.apache.cocoon.webapps.session.components.DefaultContextMan
> ager.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.SESSIO
> N_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.SESSIO
> N_CONTEXT_NAME)){
>
> sessionContext =
> contextManager.getContext(AuthenticationConstants.SESSION_CONT
> EXT_NAME);
> }
> else{
> throw new
> NullPointerException("Can't get sessionContext");
> }
>
> map = new HashMap(3);
> //check roles
> if
> (sessionContext.getSingleNode("authentication/rights/projects/
> project[@name="+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:stephanie.zohner@gmx.at]
> > > Sent: Monday, July 19, 2004 2:34 PM
> > > To: dev@cocoon.apache.org
> > > 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/
> > > project[@name="+project+"]/admin")!=null)
> > > map.put("admin","true");
> > > else
> > > map.put("admin","false");
> > >
> > > if
> > > (sessionContext.getSingleNode("authentication/rights/projects/
> > > project[@name="+project+"]/developer")!=null)
> > > map.put("developer","true");
> > > else
> > > map.put("developer","false");
> > >
> > > if
> > > (sessionContext.getSingleNode("authentication/rights/projects/
> > > project[@name="+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>
> > >
> > >
> > > --------------------------------------------------------------
> > > ------------
> > >
> > >
> >
>
> --
>
>
>
RE: HELP! Custom Action using AuthenticationContext
Posted by Stephanie Zohner <st...@gmx.at>.
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/project[@name="+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:stephanie.zohner@gmx.at]
> > Sent: Monday, July 19, 2004 2:34 PM
> > To: dev@cocoon.apache.org
> > 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/
> > project[@name="+project+"]/admin")!=null)
> > map.put("admin","true");
> > else
> > map.put("admin","false");
> >
> > if
> > (sessionContext.getSingleNode("authentication/rights/projects/
> > project[@name="+project+"]/developer")!=null)
> > map.put("developer","true");
> > else
> > map.put("developer","false");
> >
> > if
> > (sessionContext.getSingleNode("authentication/rights/projects/
> > project[@name="+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>
> >
> >
> > --------------------------------------------------------------
> > ------------
> >
> >
>
--
RE: HELP! Custom Action using AuthenticationContext
Posted by Carsten Ziegeler <cz...@s-und-n.de>.
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:stephanie.zohner@gmx.at]
> Sent: Monday, July 19, 2004 2:34 PM
> To: dev@cocoon.apache.org
> 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/
> project[@name="+project+"]/admin")!=null)
> map.put("admin","true");
> else
> map.put("admin","false");
>
> if
> (sessionContext.getSingleNode("authentication/rights/projects/
> project[@name="+project+"]/developer")!=null)
> map.put("developer","true");
> else
> map.put("developer","false");
>
> if
> (sessionContext.getSingleNode("authentication/rights/projects/
> project[@name="+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>
>
>
> --------------------------------------------------------------
> ------------
>
>
HELP! Custom Action using AuthenticationContext
Posted by Stephanie Zohner <st...@gmx.at>.
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(AuthenticationConstants.SESSION_CONTEXT_NAME)){
sessionContext
=
(AuthenticationContext)
contextProvider.getSessionContext(AuthenticationConstants.SESSION_CONTEXT_NAME);
}
else{
throw new NullPointerException("Can't get sessionContext");
}
map = new
HashMap(3);
//check
roles
if
(sessionContext.getSingleNode("authentication/rights/projects/project[@name="+project+"]/admin")!=null)
map.put("admin","true");
else
map.put("admin","false");
if
(sessionContext.getSingleNode("authentication/rights/projects/project[@name="+project+"]/developer")!=null)
map.put("developer","true");
else
map.put("developer","false");
if
(sessionContext.getSingleNode("authentication/rights/projects/project[@name="+project+"]/guest")!=null)
map.put("guest","true");
else
map.put("guest","false");
return
map;
}
}
------------------------------------------------------------------------
java.lang.NullPointerException
at
org.apache.cocoon.webapps.authentication.context.AuthenticationContextProvider.getSessionContext(AuthenticationContextProvider.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.AbstractParentProcessingNode.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>
--------------------------------------------------------------------------