Re: [xwiki-users] Groovy Errors

I am upgrading XWIKI from 1.1 to 1.8 in my sites. And I use Groovy for the user rights module. When I update the user rights, errors occurs: Error number 4001 in 4: Error while parsing velocity page MyNetcipia.PlaceRightsConfirmation Wrapped Exception: Failed to evaluate content with id Place Rights Confirmation com.xpn.xwiki.XWikiException: Error number 4001 in 4: Error while parsing velocity page MyNetcipia.PlaceRightsConfirmation Wrapped Exception: Failed to evaluate content with id Place Rights Confirmation at com.xpn.xwiki.render.XWikiVelocityRenderer.evaluate(XWikiVelocityRenderer.java:114) at com.xpn.xwiki.render.XWikiVelocityRenderer.render(XWikiVelocityRenderer.java:85) at com.xpn.xwiki.render.DefaultXWikiRenderingEngine.renderText(DefaultXWikiRenderingEngine.java:272) at com.xpn.xwiki.render.DefaultXWikiRenderingEngine.renderText(DefaultXWikiRenderingEngine.java:202) at com.xpn.xwiki.render.DefaultXWikiRenderingEngine.renderText(DefaultXWikiRenderingEngine.java:170) at com.xpn.xwiki.render.DefaultXWikiRenderingEngine.renderDocument(DefaultXWikiRenderingEngine.java:159) at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:525) at com.xpn.xwiki.api.Document.getRenderedContent(Document.java:450) at sun.reflect.GeneratedMethodAccessor261.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:295) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:245) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:203) at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:294) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:74) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:318) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:107) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:318) at org.xwiki.velocity.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:178) at org.xwiki.velocity.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:143) at com.xpn.xwiki.render.XWikiVelocityRenderer.evaluate(XWikiVelocityRenderer.java:108) at com.xpn.xwiki.XWiki.parseTemplate(XWiki.java:1662) at com.xpn.xwiki.XWiki.parseTemplate(XWiki.java:1612) at com.xpn.xwiki.api.XWiki.parseTemplate(XWiki.java:696) at sun.reflect.GeneratedMethodAccessor96.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:295) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:245) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:203) at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:294) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:318) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:194) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:170) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:74) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:88) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:74) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:318) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:107) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:318) at org.xwiki.velocity.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:178) at org.xwiki.velocity.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:143) at com.xpn.xwiki.render.XWikiVelocityRenderer.evaluate(XWikiVelocityRenderer.java:108) at com.xpn.xwiki.XWiki.parseTemplate(XWiki.java:1662) at com.xpn.xwiki.XWiki.parseTemplate(XWiki.java:1612) at com.xpn.xwiki.web.Utils.parseTemplate(Utils.java:124) at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:242) at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:122) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196) at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414) at javax.servlet.http.HttpServlet.service(HttpServlet.java:690) at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.xpn.xwiki.wysiwyg.server.filter.ConversionFilter.doFilter(ConversionFilter.java:145) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:111) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.xpn.xwiki.plugin.webdav.XWikiDavFilter.doFilter(XWikiDavFilter.java:68) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.xpn.xwiki.web.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:295) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.xpn.xwiki.web.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:112) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263) at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:190) at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:283) at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:767) at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:697) at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:889) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690) at java.lang.Thread.run(Thread.java:619) Wrapped Exception: org.apache.velocity.exception.MethodInvocationException: Invocation of method 'updateRights' in class PlaceManager threw exception java.lang.NullPointerException: Cannot invoke method getDocument() on null object @ MyNetcipia.PlaceRightsConfirmation11,15 at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:286) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:203) at org.apache.velocity.runtime.parser.node.ASTReference.evaluate(ASTReference.java:396) at org.apache.velocity.runtime.parser.node.ASTExpression.evaluate(ASTExpression.java:64) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:86) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:74) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:318) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:107) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:318) at org.xwiki.velocity.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:178) at org.xwiki.velocity.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:143) at com.xpn.xwiki.render.XWikiVelocityRenderer.evaluate(XWikiVelocityRenderer.java:108) at com.xpn.xwiki.render.XWikiVelocityRenderer.render(XWikiVelocityRenderer.java:85) at com.xpn.xwiki.render.DefaultXWikiRenderingEngine.renderText(DefaultXWikiRenderingEngine.java:272) at com.xpn.xwiki.render.DefaultXWikiRenderingEngine.renderText(DefaultXWikiRenderingEngine.java:202) at com.xpn.xwiki.render.DefaultXWikiRenderingEngine.renderText(DefaultXWikiRenderingEngine.java:170) at com.xpn.xwiki.render.DefaultXWikiRenderingEngine.renderDocument(DefaultXWikiRenderingEngine.java:159) at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:525) at com.xpn.xwiki.api.Document.getRenderedContent(Document.java:450) at sun.reflect.GeneratedMethodAccessor261.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:295) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:245) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:203) at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:294) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:74) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:318) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:107) at org.apache.velocity.runtime.parser.node.SimpleNode.r ender(SimpleNode.java:318) at org.xwiki.velocity.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:178) at org.xwiki.vel ocity.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:143) at com.xpn.xwiki.render.XWikiVelocityRenderer.evaluate(XWik iVelocityRenderer.java:108) at com.xpn.xwiki.XWiki.parseTemplate(XWiki.java:1662) at com.xpn.xwiki.XWiki.parseTemplate(XWiki.jav a:1612) at com.xpn.xwiki.api.XWiki.parseTemplate(XWiki.java:696) at sun.reflect.GeneratedMethodAccessor96.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Met hod.java:597) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:295) at org.apach e.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:245) at org.apache.velocity.runtime.parser.node.ASTReference.exe cute(ASTReference.java:203) at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:294) at org.apache. velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:318) at org.apache.velocity.runtime.directive.VelocimacroProxy. render(VelocimacroProxy.java:194) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:170) at org .apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:74) at org.apache.velocity.runtime.parser.node.ASTIfStatement.re nder(ASTIfStatement.java:88) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:74) at org.apache.velocity .runtime.parser.node.SimpleNode.render(SimpleNode.java:318) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(AST IfStatement.java:107) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:318) at org.xwiki.velocity.De faultVelocityEngine.evaluate(DefaultVelocityEngine.java:178) at org.xwiki.velocity.DefaultVelocityEngine.evaluate(DefaultVelocit yEngine.java:143) at com.xpn.xwiki.render.XWikiVelocityRenderer.evaluate(XWikiVelocityRenderer.java:108) at com.xpn.xwiki.XWiki. parseTemplate(XWiki.java:1662) at com.xpn.xwiki.XWiki.parseTemplate(XWiki.java:1612) at com.xpn.xwiki.web.Utils.parseTemplate(Ut ils.java:124) at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:242) at com.xpn.xwiki.web.XWikiAction.execute(XWikiActio n.java:122) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431) at org.apache.struts.ac tion.RequestProcessor.process(RequestProcessor.java:236) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:11 96) at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414) at javax.servlet.http.HttpServlet.service(HttpServle t.java:690) at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) at org.apache.catalina.core.ApplicationFilterChain.i (ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) a t com.xpn.xwiki.wysiwyg.server.filter.ConversionFilter.doFilter(ConversionFilter.java:145) at org.apache.catalina.core.Applicati onFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(Appl icationFilterChain.java:206) at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:111) at org.apache.catalina.core.Appli cationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter( .java:206) at com.xpn.xwiki.plugin.webdav.XWikiDavFilter.doFilter(XWikiDavFilter.java:68) at org.apache.catalina.core.Applicatio nFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(Appli cationFilterChain.java:206) at com.xpn.xwiki.web.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:295) at org .apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.Appli cationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.xpn.xwiki.web.SetCharacterEncodingFilter.doFilter(SetCharacte rEncodingFilter.java:112) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.Standa rdWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValv e.java:175) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.Error ReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:10 9) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263) at org.apache.jk.server.JkCoyoteHandler.invoke (JkCoyoteHandler.java:190) at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:283) at org.apache.jk.common.Channe lSocket.invoke(ChannelSocket.java:767) at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:697) at org.ap ache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:889) at org.apache.tomcat.util.threads.ThreadPool$Control Runnable.run(ThreadPool.java:690) at java.lang.Thread.run(Thread.java:619) Caused by: java.lang.NullPointerException: Cannot invoke method getDocument() on null object at org.codehaus.groovy.runtime.NullObject.invokeMethod(NullObject.java:77) at org.codehaus.groovy.runtime.InvokerHelper.invokePogoMethod(InvokerHelper.java:748) at org.codehaus.groovy.runtime.InvokerHelper.invokeMethod(InvokerHelper.java:725) at org.codehaus.groovy.runtime.callsite.NullCallSite.call(NullCallSite.java:17) at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:43) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:117) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:129) at PlaceManager.updateRights(script1247022056918.groovy:622) at PlaceManager$updateRights.callCurrent(Unknown Source) at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:47) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:143) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:151) at PlaceManager.updateRights(script1247022056918.groovy:712) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:295) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:245) … 95 more I see one sentence: Wrapped Exception: org.apache.velocity.exception.MethodInvocationException: Invocation of method 'updateRights' in class PlaceManager threw exception java.lang.NullPointerException: Cannot invoke method getDocument() on null object @ MyNetcipia.PlaceRightsConfirmation11,15 I find there is null in Groovy:(bold is null value) public boolean updateRights(String space) { Document doc = new Document(wiki.xWiki.getDocument(getRightsPage(space),context.context),context.context) if ((doc!=null)&&(!doc.isNew())) { for (obj in doc.getObjects("XWiki.XWikiGlobalRights")) { doc.removeObject(obj) } doc.saveWithProgrammingRights() } boolean update = false; if (doc!=null) { update |= updateRights(space, "view", doc.newObject("XWiki.XWikiGlobalRights")) update |= updateRights(space, "edit", doc.newObject("XWiki.XWikiGlobalRights")) update |= updateRights(space, "comment", doc.newObject("XWiki.XWikiGlobalRights")) if (space=="") { // Make sur the admin rights is set update |= addAdminRights(doc.newObject("XWiki.XWikiGlobalRights")) } } else return false; if (update) doc.saveWithProgrammingRights() return true; } But I cannot find which causes the null value and how to avoid this.