Hi all,
Seems the error I have posted is wrong. The above error is correct, because
I am trying to acquire a non existing resource. (I saw in the doc, the way
jcr resources get resolved, there it defines a resourcePathInfo as
.html/.json where if you add a node as "/foo/bar") you can view the content
of it through /foo/bar.html or /foo/bar.json.

In my case If I do the same, the resource that I have stored is
"/content/cassandra/1K/0" , but above NPE comes when I tried *
http://localhost:8080/content/cassandra/1K/0.html*. (NOTE: I have also set
resourcePathInfo =.html in resource meta data). I am getting following when
I do the correct sample path *http://localhost:8080/content/cassandra/1K/0.
  *The unsupported exception is thrown by me on resource.adaptTo  since I
did not see any requirement of implementing that. Is it required to
implement adaptTo method ? What does it suppose to do ? ( I believe now up
to this error point, my request has come in the correct path
, and this is something I should fix)

I checked on PlanetResource impl class. There I found following which I do
not have in my CassandraResource class. What these annotations means ?
@Adaptable(adaptableClass=Resource.class, adapters={
    @Adapter({ValueMap.class})
})  * *

Internal Server Error (500)

The requested URL /content/cassandra/num4K/0 resulted in an error in
org.apache.sling.servlets.get.DefaultGetServlet.
Exception:

java.lang.UnsupportedOperationException
        at 
org.apache.sling.cassandra.resource.provider.CassandraResource.adaptTo(CassandraResource.java:186)
        at 
org.apache.sling.servlets.get.impl.helpers.HtmlRendererServlet.doGet(HtmlRendererServlet.java:63)
        at 
org.apache.sling.api.servlets.SlingSafeMethodsServlet.mayService(SlingSafeMethodsServlet.java:268)
        at 
org.apache.sling.api.servlets.SlingSafeMethodsServlet.service(SlingSafeMethodsServlet.java:344)
        at 
org.apache.sling.api.servlets.SlingSafeMethodsServlet.service(SlingSafeMethodsServlet.java:375)
        at 
org.apache.sling.servlets.get.impl.DefaultGetServlet.doGet(DefaultGetServlet.java:252)
        at 
org.apache.sling.api.servlets.SlingSafeMethodsServlet.mayService(SlingSafeMethodsServlet.java:268)
        at 
org.apache.sling.api.servlets.SlingSafeMethodsServlet.service(SlingSafeMethodsServlet.java:344)
        at 
org.apache.sling.api.servlets.SlingSafeMethodsServlet.service(SlingSafeMethodsServlet.java:375)
        at 
org.apache.sling.engine.impl.request.RequestData.service(RequestData.java:508)
        at 
org.apache.sling.engine.impl.SlingRequestProcessorImpl.processComponent(SlingRequestProcessorImpl.java:261)
        at 
org.apache.sling.engine.impl.filter.RequestSlingFilterChain.render(RequestSlingFilterChain.java:49)
        at 
org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:64)
        at 
org.apache.sling.engine.impl.debug.RequestProgressTrackerLogFilter.doFilter(RequestProgressTrackerLogFilter.java:64)
        at 
org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:60)
        at 
org.apache.sling.engine.impl.SlingRequestProcessorImpl.processRequest(SlingRequestProcessorImpl.java:151)
        at 
org.apache.sling.engine.impl.SlingMainServlet.service(SlingMainServlet.java:207)
        at 
org.apache.felix.http.base.internal.handler.ServletHandler.doHandle(ServletHandler.java:96)
        at 
org.apache.felix.http.base.internal.handler.ServletHandler.handle(ServletHandler.java:79)
        at 
org.apache.felix.http.base.internal.dispatch.ServletPipeline.handle(ServletPipeline.java:42)
        at 
org.apache.felix.http.base.internal.dispatch.InvocationFilterChain.doFilter(InvocationFilterChain.java:49)
        at 
org.apache.felix.http.base.internal.dispatch.HttpFilterChain.doFilter(HttpFilterChain.java:33)
        at 
org.apache.sling.engine.impl.log.RequestLoggerFilter.doFilter(RequestLoggerFilter.java:75)
        at 
org.apache.felix.http.base.internal.handler.FilterHandler.doHandle(FilterHandler.java:88)
        at 
org.apache.felix.http.base.internal.handler.FilterHandler.handle(FilterHandler.java:76)
        at 
org.apache.felix.http.base.internal.dispatch.InvocationFilterChain.doFilter(InvocationFilterChain.java:47)
        at 
org.apache.felix.http.base.internal.dispatch.HttpFilterChain.doFilter(HttpFilterChain.java:33)
        at 
org.apache.felix.http.base.internal.dispatch.FilterPipeline.dispatch(FilterPipeline.java:48)
        at 
org.apache.felix.http.base.internal.dispatch.Dispatcher.dispatch(Dispatcher.java:39)
        at 
org.apache.felix.http.base.internal.DispatcherServlet.service(DispatcherServlet.java:67)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
        at 
org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
        at 
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:390)
        at 
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
        at 
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
        at 
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
        at org.mortbay.jetty.Server.handle(Server.java:326)
        at 
org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
        at 
org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:926)
        at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549)
        at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
        at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
        at 
org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410)
        at 
org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)

Request Progress:

      0 (2013-08-17 10:25:10) TIMER_START{Request Processing}
      0 (2013-08-17 10:25:10) COMMENT timer_end format is {<elapsed
msec>,<timer name>} <optional message>
      0 (2013-08-17 10:25:10) LOG Method=GET,
PathInfo=/content/cassandra/num4K/0
      0 (2013-08-17 10:25:10) TIMER_START{ResourceResolution}
     11 (2013-08-17 10:25:10) TIMER_END{11,ResourceResolution}
URI=/content/cassandra/num4K/0 resolves to
Resource=org.apache.sling.cassandra.resource.provider.CassandraResource@52ecb5eb
     17 (2013-08-17 10:25:10) LOG Resource Path Info:
SlingRequestPathInfo: path='/content/cassandra/num4K/0',
selectorString='null', extension='html', suffix='null'
     17 (2013-08-17 10:25:10) TIMER_START{ServletResolution}
     17 (2013-08-17 10:25:10)
TIMER_START{resolveServlet(org.apache.sling.cassandra.resource.provider.CassandraResource@52ecb5eb)}
     26 (2013-08-17 10:25:10)
TIMER_END{9,resolveServlet(org.apache.sling.cassandra.resource.provider.CassandraResource@52ecb5eb)}
Using servlet org.apache.sling.servlets.get.DefaultGetServlet
     26 (2013-08-17 10:25:10) TIMER_END{9,ServletResolution}
URI=/content/cassandra/num4K/0 handled by
Servlet=org.apache.sling.servlets.get.DefaultGetServlet
     26 (2013-08-17 10:25:10) LOG Applying Requestfilters
     26 (2013-08-17 10:25:10) LOG Calling filter:
org.apache.sling.engine.impl.debug.RequestProgressTrackerLogFilter
     26 (2013-08-17 10:25:10)
TIMER_START{org.apache.sling.servlets.get.DefaultGetServlet#0}
     29 (2013-08-17 10:25:10) LOG Using
org.apache.sling.servlets.get.impl.helpers.HtmlRendererServlet to
render for extension=html
     32 (2013-08-17 10:25:10)
TIMER_END{6,org.apache.sling.servlets.get.DefaultGetServlet#0}
     33 (2013-08-17 10:25:10)
TIMER_START{handleError:throwable=java.lang.UnsupportedOperationException}
     72 (2013-08-17 10:25:10)
TIMER_END{39,handleError:throwable=java.lang.UnsupportedOperationException}
Using handler 
org.apache.sling.servlets.resolver.internal.defaults.DefaultErrorHandlerServlet
     73 (2013-08-17 10:25:10) TIMER_END{73,Request Processing} Dumping
SlingRequestProgressTracker Entries



On Fri, Aug 16, 2013 at 11:58 AM, Bertrand Delacretaz <
[email protected]> wrote:

> On Fri, Aug 16, 2013 at 4:12 AM, Dishara Wijewardana
> <[email protected]> wrote:
> > ...java.lang.NullPointerException
> >         at
> org.apache.sling.servlets.resolver.internal.SlingServletResolver.resolveServlet(SlingServletResolver.java:581)...
>
> duplicated question...I replied in the other thread.
> -Bertrand
>



-- 
Thanks
/Dishara

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