[xwiki-users] groovy notification

[Dan Svoboda]

Hi,

I'm trying to use the notification system to trigger the sending of  
email whenever a comment is added to a blog article. I'm patterning my  
groovy class after the pircbot example on the xwiki snippets site.

My system is xwiki workspaces as a virtual xwiki under xem. The  
platform version is 1.5.2.

Here's my groovy class (XWSNotify.BlogMailNotificationGroovyClass):

/* Groovy Class #* */

import com.xpn.xwiki.api.XWiki;
import com.xpn.xwiki.XWikiContext;
import com.xpn.xwiki.notify.XWikiDocChangeNotificationInterface;
import com.xpn.xwiki.notify.DocObjectChangedRule;
import com.xpn.xwiki.notify.XWikiNotificationRule;
import com.xpn.xwiki.doc.XWikiDocument;

public class BlogMailNotificationGroovyClass implements \
                                               
XWikiDocChangeNotificationInterface

{
     def xwiki;
     def rule;
     def name;

     public void initClasses(XWikiContext context)
     {
         this.xwiki = context.getWiki();
         // listen to notifications
         this.rule = DocObjectChangedRule(this);
          
context.getWiki().getNotificationManager().addGeneralRule(rule);
     }

     public void notify(XWikiNotificationRule rule, XWikiDocument  
newdoc, \
                        XWikiDocument olddoc, int event, XWikiContext  
context)
     {
         def length = newdoc.getSpace().length();
         def lastFour = length - 4;
         if(newdoc.getSpace().substring(lastFour) == "Blog") {

         def ms = xwiki.getPlugin("mailsender");
         def nb = ms.sendHtmlMessage(context.getUser(), "[EMAIL PROTECTED] 
", \
                            context.get("ccrecipients"),  
context.get("bccrecipients"), \
                            context.get("subject"),  
newdoc.getRenderedContent(), \
                            newdoc.getContent(),  
newdoc.getAttachments());
         }
     }
}

/* *# */

Here's a velocity script I'm using to initialize/test:

#set($sc = $context.getContext().getEngineContext().getServletContext())
$sc.getAttribute("blgmailnotif")<br/>
#set($blgmlnotif =  
$xwiki.parseGroovyFromPage("XWSNotify.BlogMailNotificationGroovyClass"))
#set($ok = $sc.setAttribute("blgmailnotif", $blgmlnotif))
#set($blgmailnotif = $sc.getAttribute("blgmailnotif"))
$sc.getAttribute("blgmailnotif")<br/>
#set($ok = $blgmlnotif.initClasses($context))
#set($ok = $blgmlnotif.notify($blgmlnotif.rule,$newdoc,$newdoc, 
3,$context))

Here's the output from the velocity script:

[EMAIL PROTECTED]
[EMAIL PROTECTED]

So, the groovy class gets initialized to a new reference successfully  
each time parseGroovyFromPage is called.

Here's what appears in the log after running the velocity script:

[ERROR] Left side ($request.title) of '!=' operation has null value.  
Operation not possible.  [line 53, column 43]
[WARNING] Cannot retrieve method notify from object of class  
BlogMailNotificationGroovyClass due to security restrictions.

If I alter the velocity script to:

#set($sc = $context.getContext().getEngineContext().getServletContext())
$sc.getAttribute("blgmailnotif")<br/>

Here's what appears in the log:

[ERROR] Left side ($request.title) of '!=' operation has null value.  
Operation not possible.  [line 53, column 43]

So, the [WARNING] is the only log entry pertaining to the groovy class.

If I add a comment to a Blog article (with or without the  
BlogMailNotificationGroovyClass initialized), the following appears in  
the log:

[ERROR] Left side ($index) of addition operation has null value.  
Operation not possible.  [line 20, column 25]
[ERROR] Left side ($index) of addition operation has null value.  
Operation not possible.  [line 20, column 25]
[ERROR] Left side ($index) of addition operation has null value.  
Operation not possible.  [line 20, column 25]
[ERROR] Left side ($index) of addition operation has null value.  
Operation not possible.  [line 20, column 25]
[ERROR] Left side ($index) of addition operation has null value.  
Operation not possible.  [line 20, column 25]
[ERROR] Left side ($index) of addition operation has null value.  
Operation not possible.  [line 20, column 25]
[ERROR] Left side ($index) of addition operation has null value.  
Operation not possible.  [line 20, column 25]
[ERROR] Left side ($index) of addition operation has null value.  
Operation not possible.  [line 20, column 25]
[ERROR] Left side ($index) of addition operation has null value.  
Operation not possible.  [line 20, column 25]

The number of lines corresponds to the number of comments present in  
the Blog article. There's nothing in the log pertaining to the groovy  
class.

What am I doing wrong? Is there a way to put additional groovy  
debugging information into the log?

Thanks,

Dan Svoboda
University of Pittsburgh Center for HIV Protein Interactions
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