FacesContext instance is null in webscript

jnjp28 — Thu, 26 May 2011 09:43:55 GMT

Hi,i have a problem with the use of FacesConext in a webscript (extends DeclarativeWebScript). When i try to get an instance of FacesConext i have this error : "FacesContext must no be null"This is the code :FacesContext context = FacesContext.getCurrentInstance();Config config = Application.getConf

Re: FacesContext instance is null in webscript

openpj — Thu, 26 May 2011 10:23:47 GMT

But why you need to get the FacesContext?
The FacesContext is dedicated to the Alfresco Web Client, you don't need to get this context. And you can't I think…
What are the resources that you want to use for your case?

Maybe you want to get the Service Registry of Alfresco…

Re: FacesContext instance is null in webscript

jnjp28 — Thu, 26 May 2011 12:07:54 GMT

Thanks for your reply,

ConfigService is not a public service, and it's not in ServiceRegistry.

Moreover i tried to inject configService with Spring but i don't know what implementation i have to use

Regards

Re: FacesContext instance is null in webscript

jnjp28 — Thu, 26 May 2011 12:12:41 GMT

I will try the "webClientConfigService"

Re: FacesContext instance is null in webscript

jnjp28 — Thu, 26 May 2011 12:54:11 GMT

Hi,

i found my problem. The last developer wanted to create a dynamique action group with a webscript :


protected List<Map<String, String>> buildActionGroup(FacesContext context, ActionsConfigElement config, ActionGroup actionGroup, Node node) throws UnsupportedEncodingException {
      
      
      javax.faces.application.Application facesApp = context.getApplication();
      ResourceBundle messages = Application.getBundle(context);

      List<Map<String, String>> actions = new ArrayList<Map<String, String>>();
      for (String actionId : actionGroup)
       {
          if (logger.isDebugEnabled())
             logger.debug("—processing ActionDefinition: " + actionId);
          
          ActionDefinition actionDef = config.getActionDefinition(actionId);
          if (actionDef == null)
          {
             throw new AlfrescoRuntimeException("Unable to find configured ActionDefinition Id: " + actionId);
          }
          
          // build a permissions evaluator component to wrap the actionlink 
          PermissionEvaluator permEval = null;
          List<String> allow = actionDef.getAllowPermissions();
          if (allow != null && allow.size() != 0)
          {
             // found some permissions to test
             permEval = (PermissionEvaluator)facesApp.createComponent(UIActions.COMPONENT_PERMISSIONEVAL);
             String condition = allow.get(0);
             if (allow.size() != 1)
             {
                for (int i=1; i<allow.size(); i++)
                {
                   condition += "," + allow.get(i);
                }
             }
             permEval.setAllow(condition);
          }
          List<String> deny = actionDef.getDenyPermissions();
          if (deny != null && deny.size() != 0)
          {
             if (permEval == null)
             {
                permEval = (PermissionEvaluator)facesApp.createComponent(UIActions.COMPONENT_PERMISSIONEVAL);
             }
             String condition = deny.get(0);
             if (deny.size() != 1)
             {
                for (int i=1; i<deny.size(); i++)
                {
                   condition += "," + deny.get(i);
                }
             }
             permEval.setDeny(condition);
          }

          // Evaluate permissions
          if (permEval != null) {
             // Set context node
             permEval.setValue(node);
             if (! permEval.evaluate()) {
                // Skip this action
                continue;
             }
          }

          // now prepare any code based evaluators that may be present
          if (actionDef.Evaluator != null)
          {
             ActionInstanceEvaluator evaluator = (ActionInstanceEvaluator)facesApp.createComponent(UIActions.COMPONENT_ACTIONEVAL);
             evaluator.setEvaluator(actionDef.Evaluator);
             // Set context node
            evaluator.setValue(node);
             
             if (! evaluator.evaluate()) {
                // Skip this action
                continue;
             }
          }
          
          Map<String, String> action = new HashMap<String, String>();

          // Build href
          StringBuilder scriptHref = new StringBuilder(100);
          scriptHref.append("/command/script/execute");
          if (actionDef.Script.charAt(0) == '/') {
             // found a Path - encode it as a URL argument
             scriptHref.append("?scriptPath=");
             scriptHref.append(Utils.replace(URLEncoder.encode(actionDef.Script, "UTF-8"), "+", "%20"));
          }
          action.put("href", scriptHref.toString());
          action.put("target", actionDef.Target);
          action.put("image", actionDef.Image);
          if (actionDef.TooltipMsg != null) {
             action.put("tooltip", Application.getMessage(context, actionDef.TooltipMsg));
          } else if (actionDef.Tooltip != null) {
             action.put("tooltip", actionDef.Tooltip);
          }
          if (actionDef.LabelMsg != null) {
             action.put("label", Application.getMessage(context, actionDef.LabelMsg));
          } else if (actionDef.Label != null) {
             action.put("label", actionDef.Label);
          }
          
          actions.add(action);
       }
      
      return actions;
   }

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To create an action group we must have a FacesContext. What is the bestPractice to create an action group with a webscript ?

Regards

Re: FacesContext instance is null in webscript

daave — Mon, 30 May 2011 09:45:52 GMT

I just wanted to know if your problem was solved or not……?

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FacesContext instance is null in webscript

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