Re: WOMailDelivery and Component E-Mails

Jerry,

Thanks you solution to my problem worked perfectly.

Regards,
Jeff

On 19-Jan-06, at 9:27 AM, Jerry W. Walker wrote:

> Hi, Jeff,
>
> It seems that the sendNoDocMail method is being activated outside  
> the Request-Response (R-R) loop. Are you messaging it from the code  
> in the long running thread covered by the WOLongResponsePage? If  
> that question makes sense to you, then just fix it by not doing so.  
> If it fails to make sense, keep reading.
>
> The WOLongResponsePage is used to maintain the browser connection  
> (through an HTML hack, actually) while you create another thread of  
> your application to go off and do some job whose completion time  
> would normally exceed the browser's response timeout period. Let's  
> call this second long running thread the LongThread and call the  
> thread that is responding to, and sending out, WOLongResponsePages  
> the RRThread.
>
> The browser connection is maintained by inserting a Refresh header  
> in the WOLongResponsePage's HTML. This causes the browser to delay  
> for a period of time typically set in the Refresh header, and then  
> send another request to the server to start another Request- 
> Response loop. When the browser's subsequent request is received by  
> the WOAdaptor, it establishes another WOContext object to describe  
> the page that is sending the request to the WO application and  
> reactivates your RRThead which typically repeats the cycle. It  
> should continue to do this until the code in your LongThread  
> finishes its job and so notifies the WOLongResponsePage through the  
> setResult method.
>
> The WO application needs the context encapsulated in the WOContext  
> object to figure out which values in the takeValuesForRequest phase  
> are associated with which fields on that page, and which links or  
> buttons triggered an action in the invokeAction phase.
>
> However, if you send a message to your WOLongResponsePage subclass  
> from your code in LongThread, that LongThread code has already been  
> disconnected from the Request-Response loop, and so, has no  
> associated WOContext. To resolve the situation, send the result of  
> your LongThread execution to the WOLongResponsePage through its  
> setStatus method and make the WOLongResponsePage message its own  
> sendNoDocMail the next time the browser returns. That way, the  
> sendNoDocMail method will be activated from within the RRThread and  
> will have the necessary WOContext.
>
> HTH
>
> Regards,
> Jerry
>
> On Jan 18, 2006, at 3:23 PM, Jeff Dunnett wrote:
>
>> Hello,
>>
>> Since many people on this list have been extremely helpful I  
>> figured I would ask another questions:
>>
>> I have the following method which is called from a WOLongResponse  
>> page:
>>
>>
>> 	private void sendNoDocMail(UUser curUser)
>> 	{
>> 		emailTemplate page = (emailTemplate)pageWithName("emailTemplate");
>> 		page.setSendNoDocNotification(true);
>> 		page.setAUser(curUser);
>> 		WOMailDelivery sharedInstance = WOMailDelivery.sharedInstance();
>> 		sharedInstance.composeComponentEmail(Application.CS_GIRL_EMAIL,  
>> new NSArray(curUser.email()), new NSArray 
>> (Application.CS_GIRL_EMAIL), Application.NOTIFICATION_SUBJECT,  
>> page, true);
>> 		
>> 		System.out.println("Send No Doc Mail Completed");
>> 	}
>>
>> This method uses WOMailDelivery to create a component email.  The  
>> problem I am having is that an exception is being thrown by the line:
>>
>> emailTemplate page = (emailTemplate)pageWithName("emailTemplate");
>>
>> I am getting the following error message:
>>
>> [2006-01-18 15:18:30 EST] <Thread-1> Session.context() evaluates  
>> to null. You may be trying to get the context object from an  
>> archived session object. there is no context object outside of the  
>> request-response loop.
>>
>> A stack trace of the exception provides:
>>
>> java.lang.IllegalArgumentException: <Application>: Unable to  
>> create page 'emailTemplate'.  No context was passed.
>> 	at com.webobjects.appserver.WOApplication.pageWithName 
>> (WOApplication.java:1934)
>> 	at com.webobjects.appserver.WOComponent.pageWithName 
>> (WOComponent.java:1200)
>> 	at sendNotificationEmail.sendNoDocMail(sendNotificationEmail.java: 
>> 181)
>> 	at sendNotificationEmail.executeNotifyMissingDoc 
>> (sendNotificationEmail.java:99)
>> 	at longResponse.performAction(longResponse.java:66)
>> 	at com.webobjects.woextensions.WOLongResponsePage.run 
>> (WOLongResponsePage.java:155)
>> 	at java.lang.Thread.run(Thread.java:552)
>>
>> I am not sure why it says no context is being passed.  I am  
>> creating the emailTemplate component like I do for pretty much  
>> every component.  Does this have something to do with the  
>> WOLongResponsePage?  Thanks for you help.
>>
>>
>> Regards,
>> Jeff
>>
>>
>> _______________________________________________
>> WebObjects-dev mailing list
>> [email protected]
>> http://www.omnigroup.com/mailman/listinfo/webobjects-dev
>
>
> --
> __ Jerry W. Walker,
>    WebObjects Developer/Instructor for High Performance Industrial  
> Strength Internet Enabled Systems
>
>     [email protected]
>     203 278-4085        office
>
>
>

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