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https://issues.apache.org/jira/browse/JS2-1284?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13709939#comment-13709939
]
Woonsan Ko edited comment on JS2-1284 at 7/16/13 7:54 PM:
----------------------------------------------------------
I don't know what is the cause, but there's a very suspicious code in
EhCacheDistributedImpl.java:
- The member variable, 'refList', is supposed to keep a map keyed by EhCache
key and valued by object, the type of which is 'EhCacheDistributedElementImpl'
(See EhCacheDistributedImpl#put() method)
- However, the following code looks problematic:
public void notifyElement( Ehcache cache, boolean local,Element arg1,
int action)
{
// <SNIP>
try
{
// <SNIP>
if (action < 0)
refList.remove(arg1.getKey());
else if (action == CacheElement.ActionAdded)
refList.put(arg1.getKey(), arg1);
// <----- it gives Element object instead of
EhCacheDistributedElementImpl!
e.notifyChange(action);
notifyListeners(local, action, arg1.getKey(),
arg1.getObjectValue());
}
else
{
notifyListeners(local, action, arg1.getKey(), null);
}
} catch (Exception e)
{
e.printStackTrace();
}
}
I think the 'refList.put(arg1.getKey(), arg1);' line caused the problem, which
should have put an EhCacheDistributedElementImpl instance instead of the raw
ehcache Element instance.
was (Author: woon_san):
I don't know what is the cause, but there's a very suspicious code in
EhCacheDistributedElementImpl.java:
- The member variable, 'refList', is supposed to keep a map keyed by EhCache
key and valued by object, the type of which is 'EhCacheDistributedElementImpl'
(See EhCacheDistributedElementImpl#put() method)
- However, the following code looks problematic:
public void notifyElement( Ehcache cache, boolean local,Element arg1,
int action)
{
// <SNIP>
try
{
// <SNIP>
if (action < 0)
refList.remove(arg1.getKey());
else if (action == CacheElement.ActionAdded)
refList.put(arg1.getKey(), arg1);
// <----- it gives Element object instead of
EhCacheDistributedElementImpl!
e.notifyChange(action);
notifyListeners(local, action, arg1.getKey(),
arg1.getObjectValue());
}
else
{
notifyListeners(local, action, arg1.getKey(), null);
}
} catch (Exception e)
{
e.printStackTrace();
}
}
I think the 'refList.put(arg1.getKey(), arg1);' line caused the problem, which
should have put an EhCacheDistributedElementImpl instanced instead of the raw
ehcache Element instance.
> ClassCastException in EhCacheDistributedElementImpl
> ---------------------------------------------------
>
> Key: JS2-1284
> URL: https://issues.apache.org/jira/browse/JS2-1284
> Project: Jetspeed 2
> Issue Type: Bug
> Reporter: Woonsan Ko
>
> While testing, I noticed the following error log in the console:
> --------------------------------------------------------------------------------
> java.lang.ClassCastException: net.sf.ehcache.Element cannot be cast to
> org.apache.jetspeed.cache.impl.EhCacheDistributedElementImpl
> at
> org.apache.jetspeed.cache.impl.EhCacheDistributedImpl.notifyElement(EhCacheDistributedImpl.java:241)
> at
> org.apache.jetspeed.cache.impl.EhCacheDistributedImpl.notifyElementPut(EhCacheDistributedImpl.java:275)
> at
> net.sf.ehcache.event.RegisteredEventListeners.notifyElementPut(RegisteredEventListeners.java:95)
> at net.sf.ehcache.Cache.put(Cache.java:866)
> at net.sf.ehcache.Cache.put(Cache.java:796)
> at
> org.apache.jetspeed.cache.impl.EhCacheDistributedImpl.put(EhCacheDistributedImpl.java:88)
> at
> org.apache.jetspeed.components.portletpreferences.PortletPreferencesServiceImpl.retrieveDefaultPreferences(PortletPreferencesServiceImpl.java:682)
> at
> org.apache.jetspeed.components.portletpreferences.PortletPreferencesServiceImpl.getDefaultPreferences(PortletPreferencesServiceImpl.java:135)
> at sun.reflect.GeneratedMethodAccessor122.invoke(Unknown Source)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at
> org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
> at
> org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
> at
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
> at
> org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106)
> at
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
> at
> org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
> at com.sun.proxy.$Proxy5.getDefaultPreferences(Unknown Source)
> at
> org.apache.pluto.container.impl.PortletPreferencesImpl.<init>(PortletPreferencesImpl.java:103)
> at
> org.apache.pluto.container.impl.PortletRequestImpl.getPreferences(PortletRequestImpl.java:459)
> at
> com.onehippo.jetspeed.portlets.FileContentPortlet.doView(FileContentPortlet.java:32)
> at javax.portlet.GenericPortlet.doDispatch(GenericPortlet.java:348)
> at javax.portlet.GenericPortlet.render(GenericPortlet.java:253)
> at
> org.apache.jetspeed.portlet.PortletObjectProxy.proxyRender(PortletObjectProxy.java:280)
> at
> org.apache.jetspeed.portlet.PortletObjectProxy.invoke(PortletObjectProxy.java:172)
> at com.sun.proxy.$Proxy64.render(Unknown Source)
> at
> org.apache.jetspeed.factory.JetspeedPortletInstance.render(JetspeedPortletInstance.java:117)
> at
> org.apache.jetspeed.container.services.JetspeedFilterChain.doFilter(JetspeedFilterChain.java:142)
> at
> org.apache.jetspeed.container.services.JetspeedFilterChain.processFilter(JetspeedFilterChain.java:92)
> at
> org.apache.jetspeed.container.services.JetspeedFilterManager.processFilter(JetspeedFilterManager.java:112)
> at
> org.apache.jetspeed.container.JetspeedContainerServlet.doGet(JetspeedContainerServlet.java:290)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
> at
> org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:749)
> at
> org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:605)
> at
> org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:544)
> at
> org.apache.jetspeed.container.invoker.ServletPortletInvoker.invoke(ServletPortletInvoker.java:165)
> at
> org.apache.jetspeed.container.invoker.JetspeedPortletInvokerService.render(JetspeedPortletInvokerService.java:127)
> at
> org.apache.pluto.container.impl.PortletContainerImpl.doRender(PortletContainerImpl.java:157)
> at
> org.apache.jetspeed.container.JetspeedPortletContainerWrapper.doRender(JetspeedPortletContainerWrapper.java:69)
> at
> org.apache.jetspeed.aggregator.impl.RenderingJobImpl.executeInternal(RenderingJobImpl.java:245)
> at
> org.apache.jetspeed.aggregator.impl.RenderingJobImpl.access$000(RenderingJobImpl.java:57)
> at
> org.apache.jetspeed.aggregator.impl.RenderingJobImpl$1.run(RenderingJobImpl.java:206)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAsPrivileged(Subject.java:454)
> at
> org.apache.jetspeed.security.JSSubject.doAsPrivileged(JSSubject.java:187)
> at
> org.apache.jetspeed.aggregator.impl.RenderingJobImpl.execute(RenderingJobImpl.java:200)
> at
> org.apache.jetspeed.util.ServletRequestCleanupService.executeNestedRenderJob(ServletRequestCleanupService.java:79)
> at
> org.apache.jetspeed.aggregator.impl.RenderingJobImpl.run(RenderingJobImpl.java:154)
> at
> org.apache.jetspeed.aggregator.impl.WorkerImpl.run(WorkerImpl.java:173)
> --------------------------------------------------------------------------------
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