Re: AjaxTabbedPanel - exception while handling request

Fri, 28 Jan 2011 20:46:01 -0800

Thanks a lot Chuck, I have updated Wonder frameworks and the issue got resolved. Now I am able to see the AjaxTabbedPannel and Tabs. 

Thanks,
Raghu.

On 29-Jan-11, at 8:27 AM, Chuck Hill wrote:


Caused by: java.lang.NullPointerException
       at er.ajax.AjaxTabbedPanel.findTabs(AjaxTabbedPanel.java:94)
I have no idea what you have on that line, that is an old version. Check your source at that line. Or update Wonder and see if the problem goes away. 


Chuck


On Jan 28, 2011, at 6:09 PM, Raghavender wrote:


Hi Chuck,
WOActionResults res = super.invokeAction(aRequest, aContext); 
...
return ((WOComponent)res); // Exception occurring at this line-151.
I have changed the casting from WOResponse to WOComponent, and now the error in the Session invokeAction(. .) method is not occurring. But the exception (InvokeTargetException) is occurring in the my Application's dispatchRequest(.) method, getting the following exception:
Also I see a NullPointerException from the AjaxTabbedPanel class at the end of the following exception: 
-------------------------------------------------------------------------------------------------------------------------------------------------------
29193 [WorkerThread15] INFO NSLog - <DDStartPage name: DDStartPage subcomponents: null > 29203 [WorkerThread15] WARN NSLog - <com.webobjects.appserver._private.WOComponentRequestHandler>: Exception occurred while handling request: com.webobjects.foundation.NSForwardException [java.lang.reflect.InvocationTargetException] null:java.lang.reflect.InvocationTargetException [2011-1-28 14:16:3 EST] <WorkerThread15> com.webobjects.foundation.NSForwardException [java.lang.reflect.InvocationTargetException] null:java.lang.reflect.InvocationTargetException at com .webobjects .foundation ._NSUtilities._explainInstantiationException(_NSUtilities.java:600) at com .webobjects .foundation._NSUtilities.instantiateObject(_NSUtilities.java:620) at com .webobjects .appserver.WOApplication.dynamicElementWithName(WOApplication.java: 2404) at com .webobjects .appserver .parser .WOHTMLWebObjectTag._elementWithClass(WOHTMLWebObjectTag.java:179) at com .webobjects .appserver .parser .WOHTMLWebObjectTag._elementWithDeclaration(WOHTMLWebObjectTag.java: 234) at com .webobjects .appserver .parser.WOHTMLWebObjectTag.dynamicElement(WOHTMLWebObjectTag.java: 155) at com .webobjects .appserver .parser .WOBundleComponentTemplateParser .didParseClosingWebObjectTag(WOBundleComponentTemplateParser.java:68) at com .webobjects .appserver .parser.WOHTMLParser.didParseClosingWebObjectTag(WOHTMLParser.java: 194) at com .webobjects .appserver.parser.WOHTMLParser.endOfWebObjectTag(WOHTMLParser.java: 161) at com .webobjects .appserver.parser.WOHTMLParser.parseHTML(WOHTMLParser.java:68) at com .webobjects .appserver .parser .WOBundleComponentTemplateParser .parse(WOBundleComponentTemplateParser.java:109) at com .webobjects .appserver .parser.WOHTMLTemplateParser.parse(WOHTMLTemplateParser.java:40) at com .webobjects .appserver .parser .WOComponentTemplateParser .templateWithHTMLAndDeclaration(WOComponentTemplateParser.java:438) at com .webobjects .appserver ._private.WOComponentDefinition.template(WOComponentDefinition.java: 364) at com.webobjects.appserver.WOComponent.template(WOComponent.java:499) at com .webobjects.appserver.WOComponent.appendToResponse(WOComponent.java: 1112) at er .extensions .components.ERXComponent.appendToResponse(ERXComponent.java:107) at com.webobjects.appserver.WOSession.appendToResponse(WOSession.java: 1385) at er.extensions.appserver.ERXSession.appendToResponse(ERXSession.java: 540) at com .webobjects .appserver.WOApplication.appendToResponse(WOApplication.java:1794) at er .extensions .appserver.ERXApplication.appendToResponse(ERXApplication.java:1704) at com .webobjects .appserver ._private .WOComponentRequestHandler ._dispatchWithPreparedPage(WOComponentRequestHandler.java:242) at com .webobjects .appserver ._private .WOComponentRequestHandler ._dispatchWithPreparedSession(WOComponentRequestHandler.java:298) at com .webobjects .appserver ._private .WOComponentRequestHandler ._dispatchWithPreparedApplication(WOComponentRequestHandler.java:332) at com .webobjects .appserver ._private .WOComponentRequestHandler ._handleRequest(WOComponentRequestHandler.java:369) at com .webobjects .appserver ._private .WOComponentRequestHandler .handleRequest(WOComponentRequestHandler.java:442) at com .webobjects .appserver.WOApplication.dispatchRequest(WOApplication.java:1687) at er .extensions .appserver .ERXApplication.dispatchRequestImmediately(ERXApplication.java:1802) at er .extensions .appserver.ERXApplication.dispatchRequest(ERXApplication.java:1767) 
       at Application.dispatchRequest(Application.java:505)
at com .webobjects .appserver._private.WOWorkerThread.runOnce(WOWorkerThread.java:144) at com .webobjects .appserver._private.WOWorkerThread.run(WOWorkerThread.java:226) 
       at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun .reflect .NativeConstructorAccessorImpl .newInstance(NativeConstructorAccessorImpl.java:39) at sun .reflect .DelegatingConstructorAccessorImpl .newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at com .webobjects .foundation._NSUtilities.instantiateObject(_NSUtilities.java:614) 
       ... 31 more
Caused by: java.lang.NullPointerException
       at er.ajax.AjaxTabbedPanel.findTabs(AjaxTabbedPanel.java:94)
       at er.ajax.AjaxTabbedPanel.findTabs(AjaxTabbedPanel.java:107)
       at er.ajax.AjaxTabbedPanel.<init>(AjaxTabbedPanel.java:75)
       ... 36 more

------------------------------------------------------------------------------------------------------------------------------------------------------

Adding my Application's dispatchRequest(.) method code:

------------------------------------------------------------------------------------------------------------------------------------
public WOResponse dispatchRequest(WORequest aRequest){
//here we basically want to capture one recently served perfect request, so to get to this, we'll check the request as follows. if(recentlyServedPerfectReq == null || canResetRecentlyServedPerfectReq || (recentlyServedPerfectReq.sessionID() != null && aRequest.sessionID() != null && recentlyServedPerfectReq.sessionID().equals(aRequest.sessionID()) == false)) 
                {
                        recentlyServedPerfectReq = aRequest;
canResetRecentlyServedPerfectReq = (recentlyServedPerfectReq.sessionID() == null); 
                }

           // first check if the session is created for this Request
           // Session not created means, first time user
System.out.println("aRequest.sessionID()---- >>>>>>"+aRequest.sessionID()); // Session is not null, printing the session ID if(aRequest.sessionID() == null || (aRequest.sessionID() != null && aRequest.formValueForKey(".loginPage") != null) || (aRequest.sessionID() != null && aRequest.formValueForKey(".homePage") != null) || (aRequest.sessionID() != null && aRequest.formValueForKey(".exitPage") != null)){ //This is the case where the session is not created Yet or the first page is not LoginPage return super.dispatchRequest(aRequest); // Exception is occurring at this line-505. }else if(aRequest.sessionID() != null && aRequest.cookieValueForKey(aRequest.sessionID()) != null){ // This is the case where the session is created and there is a cookie created in this request // check to see if the cookie matches the one that's set 
               String userNameInSes = "";
               String hostNameInReq = "";
String cookieValue = aRequest.cookieValueForKey(aRequest.sessionID()); if(this.sessionStore() != null && this .sessionStore ().restoreSessionWithID(aRequest.sessionID(),aRequest) != null){ userNameInSes = ((Session )this .sessionStore ().restoreSessionWithID (aRequest.sessionID(),aRequest)).loginUser().fullName(); 
                   hostNameInReq = getHostNameFromRequest(aRequest);
//System.out.println(" Cookie Value Constructed from session and request values= " + userNameInSes+hostNameInReq);
// check to see if the value of cookie is same as that obtained now if((userNameInSes +hostNameInReq).equals(cookieValue)){ // success. Send the user to the respective Page 
                       return super.dispatchRequest(aRequest);

                   }
               }

           }
// Any of the case doesn'e match, send the user to the login Page. 
           WOResponse res = new WOResponse();
WOComponent redirectPage = pageWithName("Main",createContextForRequest(aRequest)); 
           WOResponse resp = redirectPage.generateResponse();
           res.setContent(resp.contentString());
//res.setContent("<html><body><h1>Error</h1></body></ html>"); 
           return res;
       }

------------------------------------------------------------------------------------------------------------------------------------

Regards,
Raghu.

On 28-Jan-11, at 10:15 PM, Chuck Hill wrote:
WOActionResults res = super.invokeAction(aRequest, aContext); 
...
return ((WOResponse)res); // Exception occurring at this line-151.
Perhaps if you cast correctly? The issue is with your code, not AjaxTabbedPanel. 



On Jan 28, 2011, at 6:53 AM, Raghavender wrote:


Hi,
I am trying to implement Project Wonder's AjaxTabbedPanel and AjaxTabbedPanelTab in my application by following the Wonder Ajax Examples from the link http://webobjects.mdimension.com/cgi-bin/WebObjects/AjaxExample.woa/1 . But after added these AjaxTabbedPanel and AjaxTabbedPanelTab in my component's html and wod files then my page is not loading, getting the following exception: 
        
------------------------------------------------------------------------------------------------------------------------------------
23848 [WorkerThread15] WARN NSLog - <com.webobjects.appserver._private.WOComponentRequestHandler>: Exception occurred while handling request: java.lang.ClassCastException: DDStartPage cannot be cast to com.webobjects.appserver.WOResponse [2011-1-28 9:42:11 EST] <WorkerThread15> java.lang.ClassCastException: DDStartPage cannot be cast to com.webobjects.appserver.WOResponse 
      at Session.invokeAction(Session.java:151)
at com .webobjects .appserver.WOApplication.invokeAction(WOApplication.java:1745) at er .extensions .appserver .ajax.ERXAjaxApplication.invokeAction(ERXAjaxApplication.java:50) at er .extensions .appserver.ERXApplication.invokeAction(ERXApplication.java:1687) at com .webobjects .appserver ._private .WOComponentRequestHandler ._dispatchWithPreparedPage(WOComponentRequestHandler.java:206) at com .webobjects .appserver ._private .WOComponentRequestHandler ._dispatchWithPreparedSession(WOComponentRequestHandler.java:298) at com .webobjects .appserver ._private .WOComponentRequestHandler ._dispatchWithPreparedApplication(WOComponentRequestHandler.java: 332) at com .webobjects .appserver ._private .WOComponentRequestHandler ._handleRequest(WOComponentRequestHandler.java:369) at com .webobjects .appserver ._private .WOComponentRequestHandler .handleRequest(WOComponentRequestHandler.java:442) at com .webobjects .appserver.WOApplication.dispatchRequest(WOApplication.java:1687) at er .extensions .appserver .ERXApplication.dispatchRequestImmediately(ERXApplication.java: 1802) at er .extensions .appserver.ERXApplication.dispatchRequest(ERXApplication.java:1767) 
      at Application.dispatchRequest(Application.java:503)
at com .webobjects .appserver._private.WOWorkerThread.runOnce(WOWorkerThread.java:144) at com .webobjects .appserver._private.WOWorkerThread.run(WOWorkerThread.java:226) 
      at java.lang.Thread.run(Thread.java:619)

------------------------------------------------------------------------------------------------------------------------------------
My Application and Session classes extends ERXApplication and ERXSession classes. 

Any help would be appreciated.

Also adding my Session class invokeAction method code:

------------------------------------------------------------------------------------------------------------------------------------
public WOActionResults invokeAction(WORequest aRequest, WOContext aContext) {
WOElement element = (WOElement)requestLookup.objectForKey(aRequest.uri()); 
       if ( element == null ) {
WOActionResults res = super.invokeAction(aRequest, aContext); 
           try{
           element = ((WOComponent)res).template();
           }catch(Exception e){
                 e.printStackTrace();
return ((WOResponse)res); // Exception occurring at this line-151. 
           }
if (res!=null && element != null && ! isReportMillComponent(element)) { requestLookup.setObjectForKey(element, aRequest.uri()); 

           }
           return res;
       }
       else if ( element instanceof WOComponent ){
           ((WOComponent)element).ensureAwakeInContext(aContext);
           return (WOComponent)element;

       }
       return null;
  }
------------------------------------------------------------------------------------------------------------------------------------

Thanks,
Raghu.
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--
Chuck Hill             Senior Consultant / VP Development
Practical WebObjects - for developers who want to increase their overall knowledge of WebObjects or who are trying to solve specific problems. 
http://www.global-village.net/products/practical_webobjects











--
Chuck Hill             Senior Consultant / VP Development
Practical WebObjects - for developers who want to increase their overall knowledge of WebObjects or who are trying to solve specific problems. 
http://www.global-village.net/products/practical_webobjects










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