NPE in ResourceProviderEntry
----------------------------
Key: SLING-725
URL: https://issues.apache.org/jira/browse/SLING-725
Project: Sling
Issue Type: Bug
Components: JCR Resource
Reporter: Alexander Klimetschek
Priority: Minor
In o.a.s.jcr.resource.internal.helper.ResourceProviderEntry, line 137, an NPE
happens when the resource object is null (getPath() is called on it). This
might happen if the resource cannot be found because eg. an anonymous user does
the request, who has no rights to read the node in question.
Here is the stacktrace:
10.11.2008 16:18:54.321 *INFO* [127.0.0.1 [1226330334321] GET
/bin/tree/ext.json HTTP/1.1] logs/request.log 10/Nov/2008:16:18:54 +0100 [1028]
-> GET
/bin/tree/ext.json?_dc=1226330323421&predicate=hierarchy&depth=0&path=%2Fcontent&node=ynode-24
HTTP/1.1
10.11.2008 16:18:54.322 *ERROR* [127.0.0.1 [1226330334321] GET
/bin/tree/ext.json HTTP/1.1] org.apache.sling.engine.impl.SlingMainServlet
service: Uncaught Throwable java.lang.NullPointerException
at
org.apache.sling.jcr.resource.internal.helper.ResourceProviderEntry$1.<init>(ResourceProviderEntry.java:137)
at
org.apache.sling.jcr.resource.internal.helper.ResourceProviderEntry.listChildren(ResourceProviderEntry.java:125)
at
org.apache.sling.jcr.resource.internal.JcrResourceResolver.listChildren(JcrResourceResolver.java:191)
at
com.day.cq.widget.ExtTreeJsonWriter.getChildren(ExtTreeJsonWriter.java:165)
at com.day.cq.widget.ExtTreeJsonWriter.write(ExtTreeJsonWriter.java:105)
at com.day.cq.widget.ExtTreeJsonWriter.write(ExtTreeJsonWriter.java:92)
at
com.day.cq.widget.servlets.ExtTreeExportServlet.doGet(ExtTreeExportServlet.java:68)
at
com.day.cq.commons.servlets.AbstractPredicateServlet.doGet(AbstractPredicateServlet.java:73)
at
org.apache.sling.api.servlets.SlingSafeMethodsServlet.mayService(SlingSafeMethodsServlet.java:262)
at
org.apache.sling.api.servlets.SlingAllMethodsServlet.mayService(SlingAllMethodsServlet.java:134)
at
org.apache.sling.api.servlets.SlingSafeMethodsServlet.service(SlingSafeMethodsServlet.java:338)
at
org.apache.sling.api.servlets.SlingSafeMethodsServlet.service(SlingSafeMethodsServlet.java:370)
at
org.apache.sling.engine.impl.request.RequestData.service(RequestData.java:465)
at
org.apache.sling.engine.impl.filter.SlingComponentFilterChain.render(SlingComponentFilterChain.java:45)
at
org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:59)
at
com.day.cq.wcm.core.impl.WCMDebugFilter.doFilter(WCMDebugFilter.java:145)
at
org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:57)
at
com.day.cq.wcm.core.impl.WCMRequestFilter.filterRootInclude(WCMRequestFilter.java:292)
at
com.day.cq.wcm.core.impl.WCMRequestFilter.doFilter(WCMRequestFilter.java:143)
at
org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:57)
at
org.apache.sling.engine.impl.SlingMainServlet.processRequest(SlingMainServlet.java:462)
at
org.apache.sling.engine.impl.filter.RequestSlingFilterChain.render(RequestSlingFilterChain.java:48)
at
org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:59)
at
org.apache.sling.engine.impl.debug.RequestProgressTrackerLogFilter.doFilter(RequestProgressTrackerLogFilter.java:59)
at
org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:57)
at
com.day.cq.rewriter.filter.RewriterFilter.doFilter(RewriterFilter.java:74)
at
org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:57)
at
com.day.cq.theme.impl.ThemeResolverFilter.doFilter(ThemeResolverFilter.java:67)
at
org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:57)
at org.apache.sling.i18n.impl.I18NFilter.doFilter(I18NFilter.java:96)
at
org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:57)
at
org.apache.sling.debug.impl.RequestProgressLogFilter.doFilter(RequestProgressLogFilter.java:45)
at
org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:57)
at
org.apache.sling.engine.impl.SlingMainServlet.service(SlingMainServlet.java:296)
at
org.apache.sling.engine.impl.SlingMainServlet.service(SlingMainServlet.java:183)
at
org.eclipse.equinox.http.servlet.internal.ServletRegistration.handleRequest(ServletRegistration.java:90)
at
org.eclipse.equinox.http.servlet.internal.ProxyServlet.processAlias(ProxyServlet.java:109)
at
org.eclipse.equinox.http.servlet.internal.ProxyServlet.service(ProxyServlet.java:75)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at
org.apache.sling.launcher.webapp.SlingServlet.service(SlingServlet.java:198)
at
com.day.j2ee.servletengine.ServletRuntimeEnvironment.service(ServletRuntimeEnvironment.java:228)
at
com.day.j2ee.servletengine.RequestDispatcherImpl.doFilter(RequestDispatcherImpl.java:315)
at
com.day.j2ee.servletengine.FilterChainImpl.doFilter(FilterChainImpl.java:74)
at
com.day.crx.launchpad.filters.CRXLaunchpadLicenseFilter.doFilter(CRXLaunchpadLicenseFilter.java:101)
at
com.day.j2ee.servletengine.FilterChainImpl.doFilter(FilterChainImpl.java:72)
at
com.day.j2ee.servletengine.RequestDispatcherImpl.service(RequestDispatcherImpl.java:334)
at
com.day.j2ee.servletengine.RequestDispatcherImpl.service(RequestDispatcherImpl.java:378)
at
com.day.j2ee.servletengine.ServletHandlerImpl.execute(ServletHandlerImpl.java:313)
at
com.day.j2ee.servletengine.DefaultThreadPool$DequeueThread.run(DefaultThreadPool.java:134)
at java.lang.Thread.run(Thread.java:613)
10.11.2008 16:18:54.326 *INFO* [127.0.0.1 [1226330334321] GET
/bin/tree/ext.json HTTP/1.1] logs/request.log 10/Nov/2008:16:18:54 +0100 [1028]
<- 500 text/html; charset=UTF-8 5ms
10.11.2008 16:18:54.328 *INFO* [127.0.0.1 [1226330334321] GET
/bin/tree/ext.json HTTP/1.1] logs/access.log localhost - anonymous
10/Nov/2008:16:18:54 +0100 "GET
/bin/tree/ext.json?_dc=1226330323421&predicate=hierarchy&depth=0&path=%2Fcontent&node=ynode-24
HTTP/1.1" 500 7302 "http://10.0.1.199:8081/libs/wcm/content/siteadmin.html";
"Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/525.19 (KHTML,
like Gecko) Chrome/0.3.154.9 Safari/525.19"
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