DatabasePageManager issue

[James Liao <ji...@gmail.com>]

Hi *Randy*,
I am testing DatabasePageManager, my environment:
WinXP SP2, JDK 1.4.2_10, Jetspeed-branch-2.0.1 svn head, Tomcat 5.5.12.

When I enabled DatabasePageManager, and then I visit
http://localhost:8080/jetspeed/, I got an NPE, pls read the detail exception
below. I do some debug and found that the problem is caused by a constants
variable named EMPTY_NODE_SET defined in
org.apache.jetspeed.page.document.impl.NodeSetImpl. This constants is
created by the default constructor which did not initialize the member
variable - nodes. Then when invoke NodeSetImpl.iterator(), it will return a
null.

java.lang.NullPointerException at
org.apache.jetspeed.om.folder.proxy.FolderProxy.aggregateChildren(
FolderProxy.java:752) at
org.apache.jetspeed.om.folder.proxy.FolderProxy.getAll(FolderProxy.java:309)
at org.apache.jetspeed.om.folder.proxy.FolderProxy.invoke(FolderProxy.java:198)
at $Proxy12.getAll(Unknown Source) at
org.apache.jetspeed.portalsite.view.SiteView.isProxyViewable(SiteView.java:1092)
at org.apache.jetspeed.portalsite.view.SiteView.getNodeProxies(SiteView.java:1009)
at org.apache.jetspeed.portalsite.view.SiteView.getNodeProxies(SiteView.java:888)
at org.apache.jetspeed.portalsite.impl.MenuImpl.constructMenuElements(
MenuImpl.java:580) at org.apache.jetspeed.portalsite.impl.MenuImpl.(
MenuImpl.java:216) at org.apache.jetspeed.portalsite.impl.MenuImpl.(
MenuImpl.java:474) at
org.apache.jetspeed.portalsite.impl.PortalSiteRequestContextImpl.getMenu(
PortalSiteRequestContextImpl.java:457) at
org.apache.jetspeed.portalsite.impl.PortalSiteRequestContextImpl.getMenu(
PortalSiteRequestContextImpl.java:405) at
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(
DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(
Method.java:324) at
org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(
UberspectImpl.java:267) at
org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:197)
at org.apache.velocity.runtime.parser.node.ASTReference.execute(
ASTReference.java:175) at
org.apache.velocity.runtime.parser.node.ASTReference.value(ASTReference.java:327)
at org.apache.velocity.runtime.parser.node.ASTExpression.value(
ASTExpression.java:51) at
org.apache.velocity.runtime.parser.node.ASTSetDirective.render(
ASTSetDirective.java:95) at
org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:230)
at org.apache.velocity.runtime.directive.Parse.render(Parse.java:181) at
org.apache.velocity.runtime.parser.node.ASTDirective.render(
ASTDirective.java:114) at
org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:230)
at org.apache.velocity.Template.merge(Template.java:256) at
org.apache.portals.bridges.velocity.BridgesVelocityViewServlet.mergeTemplate
(BridgesVelocityViewServlet.java:118) at
org.apache.velocity.tools.view.servlet.VelocityViewServlet.doRequest(Unknown
Source) at org.apache.velocity.tools.view.servlet.VelocityViewServlet.doGet(Unknown
Source) at javax.servlet.http.HttpServlet.service(HttpServlet.java:689) at
javax.servlet.http.HttpServlet.service(HttpServlet.java:802) at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(
ApplicationFilterChain.java:252) at
org.apache.catalina.core.ApplicationFilterChain.doFilter(
ApplicationFilterChain.java:173) at
org.apache.catalina.core.ApplicationDispatcher.invoke(
ApplicationDispatcher.java:672) at
org.apache.catalina.core.ApplicationDispatcher.doInclude(
ApplicationDispatcher.java:574) at
org.apache.catalina.core.ApplicationDispatcher.include(
ApplicationDispatcher.java:499) at
org.apache.jetspeed.dispatcher.JetspeedRequestDispatcher.include(
JetspeedRequestDispatcher.java:72) at
org.apache.portals.bridges.common.GenericServletPortlet.doView(
GenericServletPortlet.java:363) at
org.apache.jetspeed.portlets.layout.LayoutPortlet.doView(LayoutPortlet.java:207)
at org.apache.jetspeed.portlets.layout.MultiColumnPortlet.doView(
MultiColumnPortlet.java:126) at javax.portlet.GenericPortlet.doDispatch(
GenericPortlet.java:247) at javax.portlet.GenericPortlet.render(
GenericPortlet.java:175) at
org.apache.jetspeed.factory.JetspeedPortletInstance.render(
JetspeedPortletInstance.java:102) at
org.apache.jetspeed.container.invoker.LocalPortletInvoker.invoke(
LocalPortletInvoker.java:196) at
org.apache.jetspeed.container.invoker.LocalPortletInvoker.render(
LocalPortletInvoker.java:116) at
org.apache.pluto.PortletContainerImpl.renderPortlet(
PortletContainerImpl.java:119) at
org.apache.jetspeed.container.JetspeedPortletContainerWrapper.renderPortlet(
JetspeedPortletContainerWrapper.java:120) at
org.apache.jetspeed.aggregator.impl.RenderingJobImpl.execute(
RenderingJobImpl.java:120) at
org.apache.jetspeed.aggregator.impl.PortletRendererImpl.renderNow(
PortletRendererImpl.java:110) at
org.apache.jetspeed.aggregator.impl.PageAggregatorImpl.aggregateAndRender(
PageAggregatorImpl.java:199) at
org.apache.jetspeed.aggregator.impl.PageAggregatorImpl.build(
PageAggregatorImpl.java:106) at
org.apache.jetspeed.aggregator.AggregatorValve.invoke(AggregatorValve.java:48)
at org.apache.jetspeed.pipeline.JetspeedPipeline.invokeNext(
JetspeedPipeline.java:203) at
org.apache.jetspeed.pipeline.valve.impl.ActionValveImpl.invoke(
ActionValveImpl.java:132) at
org.apache.jetspeed.pipeline.JetspeedPipeline.invokeNext(
JetspeedPipeline.java:203) at
org.apache.jetspeed.container.ContainerValve.invoke(ContainerValve.java:76)
at org.apache.jetspeed.pipeline.JetspeedPipeline.invokeNext(
JetspeedPipeline.java:203) at
org.apache.jetspeed.decoration.DecorationValve.invoke(DecorationValve.java:100)
at org.apache.jetspeed.pipeline.JetspeedPipeline.invokeNext(
JetspeedPipeline.java:203) at
org.apache.jetspeed.profiler.impl.ProfilerValveImpl.invoke(
ProfilerValveImpl.java:179) at
org.apache.jetspeed.pipeline.JetspeedPipeline.invokeNext(
JetspeedPipeline.java:203) at
org.apache.jetspeed.security.impl.LoginValidationValveImpl.invoke(
LoginValidationValveImpl.java:143) at
org.apache.jetspeed.pipeline.JetspeedPipeline.invokeNext(
JetspeedPipeline.java:203) at
org.apache.jetspeed.security.impl.PasswordCredentialValveImpl.invoke(
PasswordCredentialValveImpl.java:148) at
org.apache.jetspeed.pipeline.JetspeedPipeline.invokeNext(
JetspeedPipeline.java:203) at
org.apache.jetspeed.localization.impl.LocalizationValveImpl.invoke(
LocalizationValveImpl.java:168) at
org.apache.jetspeed.pipeline.JetspeedPipeline.invokeNext(
JetspeedPipeline.java:203) at
org.apache.jetspeed.security.impl.AbstractSecurityValve$1.run(
AbstractSecurityValve.java:117) at
java.security.AccessController.doPrivileged(Native Method) at
javax.security.auth.Subject.doAsPrivileged(Subject.java:437) at
org.apache.jetspeed.security.impl.AbstractSecurityValve.invoke(
AbstractSecurityValve.java:111) at
org.apache.jetspeed.pipeline.JetspeedPipeline.invokeNext(
JetspeedPipeline.java:203) at
org.apache.jetspeed.container.url.impl.PortalURLValveImpl.invoke(
PortalURLValveImpl.java:55) at
org.apache.jetspeed.pipeline.JetspeedPipeline.invokeNext(
JetspeedPipeline.java:203) at
org.apache.jetspeed.capabilities.impl.CapabilityValveImpl.invoke(
CapabilityValveImpl.java:128) at
org.apache.jetspeed.pipeline.JetspeedPipeline.invokeNext(
JetspeedPipeline.java:203) at
org.apache.jetspeed.pipeline.JetspeedPipeline.invoke(JetspeedPipeline.java:185)
at org.apache.jetspeed.engine.JetspeedEngine.service(JetspeedEngine.java:231)
at org.apache.jetspeed.engine.JetspeedServlet.doGet(JetspeedServlet.java:226)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:689) at
javax.servlet.http.HttpServlet.service(HttpServlet.java:802) at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(
ApplicationFilterChain.java:252) at
org.apache.catalina.core.ApplicationFilterChain.doFilter(
ApplicationFilterChain.java:173) at
org.apache.catalina.core.ApplicationDispatcher.invoke(
ApplicationDispatcher.java:672) at
org.apache.catalina.core.ApplicationDispatcher.processRequest(
ApplicationDispatcher.java:463) at
org.apache.catalina.core.ApplicationDispatcher.doForward(
ApplicationDispatcher.java:398) at
org.apache.catalina.core.ApplicationDispatcher.forward(
ApplicationDispatcher.java:301) at
org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:693)
at org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:660)
at org.apache.jsp.index_jsp._jspService(org.apache.jsp.index_jsp:45) at
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97) at
javax.servlet.http.HttpServlet.service(HttpServlet.java:802) at
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264) at
javax.servlet.http.HttpServlet.service(HttpServlet.java:802) at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(
ApplicationFilterChain.java:252) at
org.apache.catalina.core.ApplicationFilterChain.doFilter(
ApplicationFilterChain.java:173) at
org.apache.catalina.core.StandardWrapperValve.invoke(
StandardWrapperValve.java:213) at
org.apache.catalina.core.StandardContextValve.invoke(
StandardContextValve.java:178) at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(
AuthenticatorBase.java:432) at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(
StandardEngineValve.java:107) at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:868)
at
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection
(Http11BaseProtocol.java:663) at
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(
PoolTcpEndpoint.java:527) at
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(
LeaderFollowerWorkerThread.java:80) at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(
ThreadPool.java:684) at java.lang.Thread.run(Thread.java:534)

regards,

- Jian Liao