java.lang.NullPointerException in DBListClass#displayView

2011-11-16 20:59:06,948 [http://localhost:8080/xwiki/bin/edit/Test/EditObjectsTestObject?xpage=editobject&xaction=addObject&className=Test.EditObjectsTestClass] WARN  c.x.x.d.XWikiDocument          - Failed to display field [prop] in [view] mode for Object of Class [xwiki:Test.EditObjectsTestObject] 
java.lang.NullPointerException: null
	at com.xpn.xwiki.objects.classes.DBListClass.displayView(DBListClass.java:565) ~[xwiki-platform-legacy-oldcore-3.3-20111116.182336-161.jar:na]
	at com.xpn.xwiki.doc.XWikiDocument.display(XWikiDocument.java:2768) [xwiki-platform-legacy-oldcore-3.3-20111116.182336-161.jar:na]
	at com.xpn.xwiki.doc.XWikiDocument.display(XWikiDocument.java:2729) [xwiki-platform-legacy-oldcore-3.3-20111116.182336-161.jar:na]
	at com.xpn.xwiki.doc.XWikiDocument.display(XWikiDocument.java:2678) [xwiki-platform-legacy-oldcore-3.3-20111116.182336-161.jar:na]
	at com.xpn.xwiki.api.Document.display(Document.java:1247) [xwiki-platform-legacy-oldcore-3.3-20111116.182336-161.jar:na]
	at sun.reflect.GeneratedMethodAccessor230.invoke(Unknown Source) ~[na:na]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) ~[na:1.6.0_29]
	at java.lang.reflect.Method.invoke(Method.java:597) ~[na:1.6.0_29]
	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:395) [velocity-1.7.jar:1.7]
	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:384) [velocity-1.7.jar:1.7]
	at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:173) [velocity-1.7.jar:1.7]
	at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:280) [velocity-1.7.jar:1.7]
	at org.apache.velocity.runtime.parser.node.ASTReference.value(ASTReference.java:567) [velocity-1.7.jar:1.7]
	at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:151) [velocity-1.7.jar:1.7]
	at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:280) [velocity-1.7.jar:1.7]
	at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:369) [velocity-1.7.jar:1.7]
	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72) [velocity-1.7.jar:1.7]
	at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:87) [velocity-1.7.jar:1.7]
	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72) [velocity-1.7.jar:1.7]
	at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:216) [velocity-1.7.jar:1.7]
	at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:311) [velocity-1.7.jar:1.7]
	at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:230) [velocity-1.7.jar:1.7]
	at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:207) [velocity-1.7.jar:1.7]
	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72) [velocity-1.7.jar:1.7]
	at org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:420) [velocity-1.7.jar:1.7]
	at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:207) [velocity-1.7.jar:1.7]
	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72) [velocity-1.7.jar:1.7]
	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342) [velocity-1.7.jar:1.7]
	at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:106) [velocity-1.7.jar:1.7]
	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72) [velocity-1.7.jar:1.7]
	at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:216) [velocity-1.7.jar:1.7]
	at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:311) [velocity-1.7.jar:1.7]
	at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:230) [velocity-1.7.jar:1.7]
	at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:207) [velocity-1.7.jar:1.7]
	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72) [velocity-1.7.jar:1.7]
	at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:87) [velocity-1.7.jar:1.7]
	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72) [velocity-1.7.jar:1.7]
	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342) [velocity-1.7.jar:1.7]
	at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:106) [velocity-1.7.jar:1.7]
	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72) [velocity-1.7.jar:1.7]
	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342) [velocity-1.7.jar:1.7]
	at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:106) [velocity-1.7.jar:1.7]
	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72) [velocity-1.7.jar:1.7]
	at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:87) [velocity-1.7.jar:1.7]
	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342) [velocity-1.7.jar:1.7]
	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:186) [xwiki-commons-velocity-3.3-20111116.083746-30.jar:na]
	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:152) [xwiki-commons-velocity-3.3-20111116.083746-30.jar:na]
	at com.xpn.xwiki.render.XWikiVelocityRenderer.evaluate(XWikiVelocityRenderer.java:117) [xwiki-platform-legacy-oldcore-3.3-20111116.182336-161.jar:na]
	at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:1813) [xwiki-platform-legacy-oldcore-3.3-20111116.182336-161.jar:na]
	at com.xpn.xwiki.web.Utils.parseTemplate(Utils.java:154) [xwiki-platform-legacy-oldcore-3.3-20111116.182336-161.jar:na]
	at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:239) [xwiki-platform-legacy-oldcore-3.3-20111116.182336-161.jar:na]
	at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:116) [xwiki-platform-legacy-oldcore-3.3-20111116.182336-161.jar:na]
	at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431) [struts-1.2.9.jar:1.2.9]
	at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236) [struts-1.2.9.jar:1.2.9]
	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196) [struts-1.2.9.jar:1.2.9]
	at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432) [struts-1.2.9.jar:1.2.9]
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) [servlet-api-2.5.jar:2.5]
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) [servlet-api-2.5.jar:2.5]
	at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:538) [jetty-servlet-7.4.5.v20110725.jar:7.4.5.v20110725]
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1352) [jetty-servlet-7.4.5.v20110725.jar:7.4.5.v20110725]
	at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:128) [xwiki-platform-legacy-oldcore-3.3-20111116.182336-161.jar:na]
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323) [jetty-servlet-7.4.5.v20110725.jar:7.4.5.v20110725]
	at org.xwiki.wysiwyg.server.filter.ConversionFilter.doFilter(ConversionFilter.java:144) [xwiki-platform-wysiwyg-server-3.3-SNAPSHOT.jar:na]
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323) [jetty-servlet-7.4.5.v20110725.jar:7.4.5.v20110725]
	at com.xpn.xwiki.plugin.webdav.XWikiDavFilter.doFilter(XWikiDavFilter.java:68) [xwiki-platform-webdav-server-3.3-20111116.182858-160.jar:na]
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323) [jetty-servlet-7.4.5.v20110725.jar:7.4.5.v20110725]
	at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:217) [xwiki-platform-container-servlet-3.3-20111116.180707-194.jar:na]
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323) [jetty-servlet-7.4.5.v20110725.jar:7.4.5.v20110725]
	at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:109) [xwiki-platform-container-servlet-3.3-20111116.180707-194.jar:na]
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323) [jetty-servlet-7.4.5.v20110725.jar:7.4.5.v20110725]
	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:476) [jetty-servlet-7.4.5.v20110725.jar:7.4.5.v20110725]
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119) [jetty-server-7.4.5.v20110725.jar:7.4.5.v20110725]
	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:517) [jetty-security-7.4.5.v20110725.jar:7.4.5.v20110725]
	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:225) [jetty-server-7.4.5.v20110725.jar:7.4.5.v20110725]
	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:937) [jetty-server-7.4.5.v20110725.jar:7.4.5.v20110725]
	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:406) [jetty-servlet-7.4.5.v20110725.jar:7.4.5.v20110725]
	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:183) [jetty-server-7.4.5.v20110725.jar:7.4.5.v20110725]
	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:871) [jetty-server-7.4.5.v20110725.jar:7.4.5.v20110725]
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117) [jetty-server-7.4.5.v20110725.jar:7.4.5.v20110725]
	at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:247) [jetty-server-7.4.5.v20110725.jar:7.4.5.v20110725]
	at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:149) [jetty-server-7.4.5.v20110725.jar:7.4.5.v20110725]
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110) [jetty-server-7.4.5.v20110725.jar:7.4.5.v20110725]
	at org.eclipse.jetty.server.Server.handle(Server.java:346) [jetty-server-7.4.5.v20110725.jar:7.4.5.v20110725]
	at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:589) [jetty-server-7.4.5.v20110725.jar:7.4.5.v20110725]
	at org.eclipse.jetty.server.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:1048) [jetty-server-7.4.5.v20110725.jar:7.4.5.v20110725]
	at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:601) [jetty-http-7.4.5.v20110725.jar:7.4.5.v20110725]
	at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:214) [jetty-http-7.4.5.v20110725.jar:7.4.5.v20110725]
	at org.eclipse.jetty.server.HttpConnection.handle(HttpConnection.java:411) [jetty-server-7.4.5.v20110725.jar:7.4.5.v20110725]
	at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:535) [jetty-io-7.4.5.v20110725.jar:7.4.5.v20110725]
	at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:40) [jetty-io-7.4.5.v20110725.jar:7.4.5.v20110725]
	at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:529) [jetty-util-7.4.5.v20110725.jar:7.4.5.v20110725]
	at java.lang.Thread.run(Thread.java:662) [na:1.6.0_29]