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ClassCastException trying to show WOStats
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ClassCastException trying to show WOStats

  • Subject: ClassCastException trying to show WOStats
  • From: Paul Hoadley <email@hidden>
  • Date: Wed, 10 Dec 2008 19:03:10 +1030
Hello,

I'm using WO 5.4.3, and some Wonder frameworks, though this particular app does not extend ERXApplication.  The following happens in development (OS X) and deployment (CentOS, JavaMonitor).

I've got -WOStatisticsPassword set.  When I hit wa/WOStats, I get this:

Application.handleException: Handling an Exception:
java.lang.ClassCastException: java.util.HashMap
at com.webobjects.woextensions.WOStatsPage._initIvars(WOStatsPage.java:81)
at com.webobjects.woextensions.WOStatsPage.appendToResponse(WOStatsPage.java:94)
at com.webobjects.appserver.WOComponent._appendPageToResponse(WOComponent.java:1574)
at com.webobjects.appserver.WOComponent._generateResponseInContext(WOComponent.java:1543)
at com.webobjects.appserver.WOComponent.generateResponse(WOComponent.java:1538)
at com.webobjects.appserver._private.WOActionRequestHandler._handleRequest(WOActionRequestHandler.java:278)
at com.webobjects.appserver._private.WOActionRequestHandler.handleRequest(WOActionRequestHandler.java:158)
at com.webobjects.appserver.WOApplication.dispatchRequest(WOApplication.java:1687)
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:613)

The offending lines up to and including 81 in WOStatsPage._initIvars() are:

        statsDict = WOApplication.application().statistics();
        pagesDict = (NSDictionary)statsDict.objectForKey("Pages");
        directActionsDict = (NSDictionary)statsDict.objectForKey("DirectActions");
        detailsDict = (NSDictionary)statsDict.objectForKey("Details");
        transactions = (NSDictionary)statsDict.objectForKey("Transactions");
        memoryDict = (NSDictionary)statsDict.objectForKey("Memory");
        sessionsDict = ((NSDictionary)statsDict.objectForKey("Sessions")).mutableClone();
        sessionMemoryDict = (NSDictionary)sessionsDict.removeObjectForKey("Avg. Memory Per Session");

So it's just trying to pull stuff out of WOApplication.statistics().  Why are we getting the class mismatch here, and, more importantly, does anyone know how to fix/work around it?

Google shows a few references to this problem, but, as far as I could find, no solution.


-- 
Paul.

w  http://logicsquad.net/
h  http://paul.hoadley.name/


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