[opencms-dev] CmsObject#readAllProjectResources(id) throwsClassCastException
Alexander Kandzior
alex at opencms.org
Sat May 7 09:29:46 CEST 2005
John,
You are right, the method CmsObject#readAllProjectResources(int) does not
work. It's a bug. It's apparently so that the method is a leftover from very
old, since it's only used on one location in the code that's apparently
never really executed. That's why I removed that method in CVS HEAD.
The replacement method that does work is
CmsObject#readProjectResources(CmsProject). However, this method does not
return all resources in the project, but only the list of resources that
compose the project "view" (Strings). Internally the other method used the
same code, that's why there was a classcast exception.
Best Regards,
Alex.
Alexander Kandzior
Alkacon Software - The OpenCms Experts
http://www.alkacon.com
> -----Original Message-----
> From: opencms-dev-bounces at opencms.org
> [mailto:opencms-dev-bounces at opencms.org] On Behalf Of John Emmer
> Sent: Saturday, May 07, 2005 2:34 AM
> To: opencms-dev at opencms.org
> Subject: [opencms-dev] CmsObject#readAllProjectResources(id)
> throwsClassCastException
>
>
>
>
>
> I'm just poking around trying to learn my way around the OpenCMS APIs.
> I've deployed the 6.0 beta 2 release and added a simple
> servlet that contains the following code:
>
> PrintWriter out = response.getWriter();
>
> try {
>
> CmsObject cms = OpenCms.initCmsObject("Guest");
> cms.loginUser("Admin","admin");
> out.println("Accessible Projects<BR>");
> out.println("<UL>");
> for ( Iterator projIter =
> cms.getAllAccessibleProjects().iterator(); projIter.hasNext();) {
> CmsProject project = (CmsProject)projIter.next();
> out.println( "<LI>"+project.toString()+"</LI>" );
> out.println("Project Resources<BR>");
> out.println("<OL>");
> List resources =
> cms.readAllProjectResources(project.getId());
> for ( Iterator resIter =
> resources.iterator(); resIter.hasNext(); ) {
> CmsResource resource =
> (CmsResource)resIter.next();
> I_CmsResourceType type =
> OpenCms.getResourceManager().getResourceType(resource.getTypeId());
> out.println(
> "<LI>"+resource.getResourceId().toString()+" : "+type+" : "
> +resource.getName()+" :
> "+resource.getRootPath()+"</LI>" );
> }
> out.println("</OL>");
> }
> out.println("</UL>");
> } catch (CmsException e) {
> e.printStackTrace(out);
> }
>
> When I access my servlet, I get the following:
>
> org.opencms.main.CmsException: Exception during database
> operation [Code 0
> - Unknown exception] Root cause was:
> java.lang.ClassCastException at
> org.opencms.db.CmsDbContext.report(CmsDbContext.java:197)
> at
> org.opencms.db.CmsSecurityManager.readAllProjectResources(CmsS
> ecurityManager.java:2679)
>
> at
> org.opencms.file.CmsObject.readAllProjectResources(CmsObject.j
> ava:1982)
> at com.avega.cms.OpenCMSProbe.examineCmsObject(OpenCMSProbe.java:95)
> at com.avega.cms.OpenCMSProbe.service(OpenCMSProbe.java:69)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilt
> er(ApplicationFilterChain.java:252)
>
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(Appli
> cationFilterChain.java:173)
>
> at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardW
> rapperValve.java:213)
>
> at
> org.apache.catalina.core.StandardContextValve.invoke(StandardC
> ontextValve.java:178)
>
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHost
> Valve.java:126)
>
> at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReport
> Valve.java:105)
>
> at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEn
> gineValve.java:107)
>
> at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdap
> ter.java:148)
> at
> org.apache.coyote.http11.Http11Processor.process(Http11Process
> or.java:856)
> at
> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandle
r.processConnection(Http11Protocol.java:744)
>
> at
> org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolT
> cpEndpoint.java:527)
>
> at
> org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(Le
> aderFollowerWorkerThread.java:80)
>
> at
> org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(
ThreadPool.java:684)
>
> at java.lang.Thread.run(Thread.java:534)
> >-----------
> >Root cause:
> >java.lang.ClassCastException
> > at
> org.opencms.db.CmsDriverManager.updateContextDates(CmsDriverMa
> nager.java:7025)
>
> > at
> org.opencms.db.CmsDriverManager.readAllProjectResources(CmsDri
> verManager.java:4824)
>
> > at
> org.opencms.db.CmsSecurityManager.readAllProjectResources(CmsS
> ecurityManager.java:2677)
>
> > at
> org.opencms.file.CmsObject.readAllProjectResources(CmsObject.j
> ava:1982)
> > at com.avega.cms.OpenCMSProbe.examineCmsObject(OpenCMSProbe.java:95)
> > at com.avega.cms.OpenCMSProbe.service(OpenCMSProbe.java:69)
> > at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
> > at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilt
> er(ApplicationFilterChain.java:252)
>
> > at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(Appli
> cationFilterChain.java:173)
>
> > at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardW
> rapperValve.java:213)
>
> > at
> org.apache.catalina.core.StandardContextValve.invoke(StandardC
> ontextValve.java:178)
>
> > at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHost
> Valve.java:126)
>
> > at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReport
> Valve.java:105)
>
> > at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEn
> gineValve.java:107)
>
> > at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdap
> ter.java:148)
> > at
> org.apache.coyote.http11.Http11Processor.process(Http11Process
> or.java:856)
> > at
> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandle
r.processConnection(Http11Protocol.java:744)
>
> > at
> org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolT
> cpEndpoint.java:527)
>
> > at
> org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(Le
> aderFollowerWorkerThread.java:80)
>
> > at
> org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(
ThreadPool.java:684)
>
> > at java.lang.Thread.run(Thread.java:534)
>
> What am I doing wrong? At this point, I just want to walk
> the resource tree to see what everything looks like from the
> API point of view.
>
> Thanks!
>
> --------------------------------------------------------------
> ---------------
>
> John Emmer
> Senior Software Engineer
> Avega
> 200 N. Sepulveda, Suite 600 El Segundo, CA 90245
> 310-563-3322 jemmer at avega.com
>
>
>
>
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