"java.lang.LinkageError: loader constraint violation" when restarting after just installing the Workspace UI extension

Details

Type: Bug
Status: Closed
Priority: Critical
Resolution: Fixed
Affects Version/s: 4.3
Fix Version/s: 4.5.2, 5.0-milestone-2
Component/s: Extension Manager
Labels:
- bugfixingday

Tests:

Unit
Difficulty:
Unknown
Documentation:
N/A
Documentation in Release Notes:
N/A

Similar issues:

~~XWIKI-8343~~	Workspaces Manager does not work when installed with Extension Manager
~~XWIKI-7151~~	Installed extension licenses are lost after server restart
~~XWIKI-8603~~	Error when installing Workspace UI on XE
~~XWIKI-6991~~	Add hooks into the platform to handle the workspaces feature when it is installed
~~XWIKI-8553~~	EM UI does not allow installing an extension on a subwiki when it's installed on another wiki
XWIKI-8359	New workspace is not set up as workspace
~~XWIKI-8335~~	Restarting the wiki generates an invalid extension exception after installing the IRCBot app in a subwiki
~~XWIKI-8515~~	Localization module does not properly load translations pages registered as documentBundles
~~XWIKI-7700~~	Give public script access to job status for a specific extension id
~~XWIKI-8628~~	Console error when installing/creating a workspace using workspaces installed with EM

Description

This actually happens on 4.4/3-SNAPSHOT.
How to reproduce:

Download XE 4.4-SNAPSHOT jetty-hsqldb
Add the snapshots repository and set to virtual=1
Install org.xwiki.platform:xwiki-platform-workspace-ui 4.4-SNAPSHOT on the entire farm
uninstall workspace-ui from the entire farm and re-install it but only on the main wiki
Restart XWiki and access an open the homepage

org.xwiki.velocity.XWikiVelocityException: Failed to evaluate content with id [/templates/menuview.vm]
        at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:247)
        at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:187)
        at com.xpn.xwiki.render.XWikiVelocityRenderer.evaluate(XWikiVelocityRenderer.java:105)
        at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:1765)
        at com.xpn.xwiki.XWiki.parseTemplate(XWiki.java:1705)
        at com.xpn.xwiki.api.XWiki.parseTemplate(XWiki.java:854)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:616)
        at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:395)
        at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:384)
        at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:173)
        at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:280)
        at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:369)
        at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
        at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:216)
        at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:311)
        at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:230)
        at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:207)
        at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
        at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:87)
        at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
        at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:228)
        at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:187)
        at com.xpn.xwiki.render.XWikiVelocityRenderer.evaluate(XWikiVelocityRenderer.java:105)
        at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:1765)
        at com.xpn.xwiki.XWiki.parseTemplate(XWiki.java:1705)
        at com.xpn.xwiki.api.XWiki.parseTemplate(XWiki.java:854)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:616)
        at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:395)
        at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:384)
        at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:173)
        at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:280)
        at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:369)
        at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
        at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:216)
        at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:311)
        at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:230)
        at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:207)
        at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
        at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
        at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:106)
        at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
        at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:228)
        at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:187)
        at com.xpn.xwiki.render.XWikiVelocityRenderer.evaluate(XWikiVelocityRenderer.java:105)
        at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:1765)
        at com.xpn.xwiki.web.Utils.parseTemplate(Utils.java:155)
        at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:241)
        at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:116)
        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:707)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
        at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:538)
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1352)
        at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:120)
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323)
        at org.xwiki.wysiwyg.server.filter.ConversionFilter.doFilter(ConversionFilter.java:144)
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323)
        at com.xpn.xwiki.plugin.webdav.XWikiDavFilter.doFilter(XWikiDavFilter.java:66)
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323)
        at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208)
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323)
        at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111)
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323)
        at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:476)
        at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119)
        at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:517)
        at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:225)
        at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:937)
        at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:406)
        at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:183)
        at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:871)
        at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
        at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:247)
        at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:149)
        at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110)
        at org.eclipse.jetty.server.Server.handle(Server.java:346)
        at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:589)
        at org.eclipse.jetty.server.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:1048)
        at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:601)
        at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:214)
        at org.eclipse.jetty.server.HttpConnection.handle(HttpConnection.java:411)
        at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:535)
        at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:40)
        at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:529)
        at java.lang.Thread.run(Thread.java:679)
Caused by: org.apache.velocity.exception.MethodInvocationException: Invocation of method 'getWikiDocument' in  class com.xpn.xwiki.plugin.wikimanager.internal.WikiManagerScriptService threw exception java.lang.LinkageError: loader constraint violation: when resolving method "com.xpn.xwiki.plugin.wikimanager.WikiManagerPluginApi.<init>(Lcom/xpn/xwiki/plugin/wikimanager/WikiManagerPlugin;Lcom/xpn/xwiki/XWikiContext;)V" the class loader (instance of org/xwiki/classloader/NamespaceURLClassLoader) of the current class, com/xpn/xwiki/plugin/wikimanager/WikiManagerPlugin, and the class loader (instance of org/xwiki/classloader/NamespaceURLClassLoader) for resolved class, com/xpn/xwiki/plugin/wikimanager/WikiManagerPluginApi, have different Class objects for the type com/xpn/xwiki/plugin/wikimanager/WikiManagerPlugin used in the signature at /templates/menuview.vm[line 165, column 43]
        at org.apache.velocity.runtime.parser.node.ASTMethod.handleInvocationException(ASTMethod.java:261)
        at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:187)
        at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:280)
        at org.apache.velocity.runtime.parser.node.ASTReference.value(ASTReference.java:567)
        at org.apache.velocity.runtime.parser.node.ASTExpression.value(ASTExpression.java:71)
        at org.apache.velocity.runtime.parser.node.ASTSetDirective.render(ASTSetDirective.java:142)
        at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
        at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:87)
        at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
        at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:87)
        at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
        at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:228)
        ... 93 more
Caused by: java.lang.LinkageError: loader constraint violation: when resolving method "com.xpn.xwiki.plugin.wikimanager.WikiManagerPluginApi.<init>(Lcom/xpn/xwiki/plugin/wikimanager/WikiManagerPlugin;Lcom/xpn/xwiki/XWikiContext;)V" the class loader (instance of org/xwiki/classloader/NamespaceURLClassLoader) of the current class, com/xpn/xwiki/plugin/wikimanager/WikiManagerPlugin, and the class loader (instance of org/xwiki/classloader/NamespaceURLClassLoader) for resolved class, com/xpn/xwiki/plugin/wikimanager/WikiManagerPluginApi, have different Class objects for the type com/xpn/xwiki/plugin/wikimanager/WikiManagerPlugin used in the signature
        at com.xpn.xwiki.plugin.wikimanager.WikiManagerPlugin.getPluginApi(WikiManagerPlugin.java:84)
        at com.xpn.xwiki.plugin.wikimanager.internal.WikiManagerScriptService.getAPI(WikiManagerScriptService.java:93)
        at com.xpn.xwiki.plugin.wikimanager.internal.WikiManagerScriptService.getWikiDocument(WikiManagerScriptService.java:174)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:616)
        at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:395)
        at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:384)
        at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:173)
        ... 103 more

Workaround: Uninstall the Workspace UI from the main wiki. This will avoid the usage of the wikimanager script service in the menuview.vm template.

Issue Links

is duplicated by

XWIKI-8768 org.xwiki.platform%3Axwiki-platform-workspace-api extension breaks upgrade to 4.4.1

is related to

XWIKI-8603 Error when installing Workspace UI on XE

Activity

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Thomas Mortagne added a comment - 21/Feb/13 12:05 - edited

I cannot reproduce this on 5.0-SNAPSHOT. What I don't understand is that the error seems to indicate that com.xpn.xwiki.plugin.wikimanager.WikiManagerPlugin is in two different classloaders, you are sure you did not had wiki-manager jar both in WEB-INF/lib and installed as extension ?

Show

Thomas Mortagne added a comment - 21/Feb/13 12:05 - edited I cannot reproduce this on 5.0-SNAPSHOT. What I don't understand is that the error seems to indicate that com.xpn.xwiki.plugin.wikimanager.WikiManagerPlugin is in two different classloaders, you are sure you did not had wiki-manager jar both in WEB-INF/lib and installed as extension ?

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Thomas Mortagne added a comment - 21/Feb/13 20:39

Closing it, reopen it if you find a new way to reproduce it.

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Thomas Mortagne added a comment - 21/Feb/13 20:39 Closing it, reopen it if you find a new way to reproduce it.

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Eduard Moraru added a comment - 22/Feb/13 16:42 - edited

I have just reproduced the problem:

XE 5.0-snapshot jetty/hsqldb
org.xwiki.platform:xwiki-platform-workspace-ui 5.0-SNAPSHOT

Exactly the same problem:

2013-02-22 17:38:58.925:INFO::Started SelectChannelConnector@0.0.0.0:8080 STARTING
2013-02-22 17:38:58.938:INFO::----------------------------------
2013-02-22 17:38:59.052:INFO::Server started, you can now open http://Enygma.XWiki:8080/ in your browser to access your wiki.
2013-02-22 17:38:59.052:INFO::----------------------------------
2013-02-22 17:39:03,987 [http://localhost:8080/xwiki/bin/view/Main/WebHome] INFO  .HibernateDataMigrationManager - Storage schema updates and data migrations are enabled 
2013-02-22 17:39:04,009 [http://localhost:8080/xwiki/bin/view/Main/WebHome] INFO  .HibernateDataMigrationManager - No data migration to apply for database [xwiki] currently in version [43000] 
2013-02-22 17:39:04,010 [http://localhost:8080/xwiki/bin/view/Main/WebHome] INFO  .HibernateDataMigrationManager - Checking Hibernate mapping and updating schema if needed for database [xwiki] 
org.xwiki.velocity.XWikiVelocityException: Failed to evaluate content with id [/templates/menuview.vm]
        at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:247)
        at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:187)
        at com.xpn.xwiki.render.XWikiVelocityRenderer.evaluate(XWikiVelocityRenderer.java:105)
        at com.xpn.xwiki.internal.template.DefaultPrivilegedTemplateRenderer.evaluate(DefaultPrivilegedTemplateRenderer.java:125)
        at com.xpn.xwiki.internal.template.DefaultPrivilegedTemplateRenderer.evaluateTemplate(DefaultPrivilegedTemplateRenderer.java:75)
        at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:1788)
        at com.xpn.xwiki.XWiki.parseTemplate(XWiki.java:1728)
        at com.xpn.xwiki.api.XWiki.parseTemplate(XWiki.java:854)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:601)
        at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:395)
        at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:384)
        at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:173)
        at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:280)
        at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:369)
        at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
        at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:216)
        at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:311)
        at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:230)
        at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:207)
        at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
        at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:87)
        at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
        at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:228)
        at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:187)
        at com.xpn.xwiki.render.XWikiVelocityRenderer.evaluate(XWikiVelocityRenderer.java:105)
        at com.xpn.xwiki.internal.template.DefaultPrivilegedTemplateRenderer.evaluate(DefaultPrivilegedTemplateRenderer.java:125)
        at com.xpn.xwiki.internal.template.DefaultPrivilegedTemplateRenderer.evaluateTemplate(DefaultPrivilegedTemplateRenderer.java:75)
        at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:1788)
        at com.xpn.xwiki.XWiki.parseTemplate(XWiki.java:1728)
        at com.xpn.xwiki.api.XWiki.parseTemplate(XWiki.java:854)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:601)
        at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:395)
        at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:384)
        at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:173)
        at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:280)
        at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:369)
        at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
        at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:216)
        at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:311)
        at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:230)
        at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:207)
        at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
        at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
        at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:106)
        at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
        at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:228)
        at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:187)
        at com.xpn.xwiki.render.XWikiVelocityRenderer.evaluate(XWikiVelocityRenderer.java:105)
        at com.xpn.xwiki.internal.template.DefaultPrivilegedTemplateRenderer.evaluate(DefaultPrivilegedTemplateRenderer.java:125)
        at com.xpn.xwiki.internal.template.DefaultPrivilegedTemplateRenderer.evaluateTemplate(DefaultPrivilegedTemplateRenderer.java:75)
        at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:1788)
        at com.xpn.xwiki.web.Utils.parseTemplate(Utils.java:151)
        at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:241)
        at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:116)
        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:707)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
        at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:538)
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1352)
        at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:120)
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323)
        at org.xwiki.wysiwyg.server.filter.ConversionFilter.doFilter(ConversionFilter.java:144)
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323)
        at com.xpn.xwiki.plugin.webdav.XWikiDavFilter.doFilter(XWikiDavFilter.java:66)
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323)
        at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208)
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323)
        at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111)
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323)
        at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:476)
        at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119)
        at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:517)
        at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:225)
        at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:937)
        at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:406)
        at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:183)
        at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:871)
        at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
        at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:247)
        at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:149)
        at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110)
        at org.eclipse.jetty.server.Server.handle(Server.java:346)
        at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:589)
        at org.eclipse.jetty.server.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:1048)
        at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:601)
        at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:214)
        at org.eclipse.jetty.server.HttpConnection.handle(HttpConnection.java:411)
        at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:535)
        at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:40)
        at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:529)
        at java.lang.Thread.run(Thread.java:722)
Caused by: org.apache.velocity.exception.MethodInvocationException: Invocation of method 'canCreateWorkspace' in  class org.xwiki.workspace.internal.WorkspaceManagerScriptService threw exception java.lang.LinkageError: loader constraint violation: when resolving method "com.xpn.xwiki.plugin.wikimanager.WikiManagerPluginApi.<init>(Lcom/xpn/xwiki/plugin/wikimanager/WikiManagerPlugin;Lcom/xpn/xwiki/XWikiContext;)V" the class loader (instance of org/xwiki/classloader/NamespaceURLClassLoader) of the current class, com/xpn/xwiki/plugin/wikimanager/WikiManagerPlugin, and the class loader (instance of org/xwiki/classloader/NamespaceURLClassLoader) for resolved class, com/xpn/xwiki/plugin/wikimanager/WikiManagerPluginApi, have different Class objects for the type inApi.<init>(Lcom/xpn/xwiki/plugin/wikimanager/WikiManagerPlugin;Lcom/xpn/xwiki/XWikiContext;)V used in the signature at /templates/menuview.vm[line 54, column 23]
        at org.apache.velocity.runtime.parser.node.ASTMethod.handleInvocationException(ASTMethod.java:261)
        at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:187)
        at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:280)
        at org.apache.velocity.runtime.parser.node.ASTReference.evaluate(ASTReference.java:530)
        at org.apache.velocity.runtime.parser.node.ASTAndNode.evaluate(ASTAndNode.java:106)
        at org.apache.velocity.runtime.parser.node.ASTAndNode.value(ASTAndNode.java:74)
        at org.apache.velocity.runtime.parser.node.ASTExpression.value(ASTExpression.java:71)
        at org.apache.velocity.runtime.parser.node.ASTSetDirective.render(ASTSetDirective.java:142)
        at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
        at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:87)
        at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
        at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:228)
        ... 99 more
Caused by: java.lang.LinkageError: loader constraint violation: when resolving method "com.xpn.xwiki.plugin.wikimanager.WikiManagerPluginApi.<init>(Lcom/xpn/xwiki/plugin/wikimanager/WikiManagerPlugin;Lcom/xpn/xwiki/XWikiContext;)V" the class loader (instance of org/xwiki/classloader/NamespaceURLClassLoader) of the current class, com/xpn/xwiki/plugin/wikimanager/WikiManagerPlugin, and the class loader (instance of org/xwiki/classloader/NamespaceURLClassLoader) for resolved class, com/xpn/xwiki/plugin/wikimanager/WikiManagerPluginApi, have different Class objects for the type inApi.<init>(Lcom/xpn/xwiki/plugin/wikimanager/WikiManagerPlugin;Lcom/xpn/xwiki/XWikiContext;)V used in the signature
        at com.xpn.xwiki.plugin.wikimanager.WikiManagerPlugin.getPluginApi(WikiManagerPlugin.java:84)
        at com.xpn.xwiki.plugin.wikimanager.internal.WikiManagerScriptService.getAPI(WikiManagerScriptService.java:93)
        at com.xpn.xwiki.plugin.wikimanager.internal.WikiManagerScriptService.getWikiFromName(WikiManagerScriptService.java:159)
        at org.xwiki.workspace.internal.DefaultWorkspaceManager.getWorkspace(DefaultWorkspaceManager.java:487)
        at org.xwiki.workspace.internal.DefaultWorkspaceManager.isWorkspace(DefaultWorkspaceManager.java:604)
        at org.xwiki.workspace.internal.DefaultWorkspaceManager.canCreateWorkspace(DefaultWorkspaceManager.java:166)
        at org.xwiki.workspace.internal.WorkspaceManagerScriptService.canCreateWorkspace(WorkspaceManagerScriptService.java:94)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:601)
        at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:395)
        at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:384)
        at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:173)
        ... 109 more

AFAIR from the last time, if you don`t restart the wiki after just installing workspaces, it is working fine. Once you restart, the classloader gets messed-up.

Show

Eduard Moraru added a comment - 22/Feb/13 16:42 - edited I have just reproduced the problem: XE 5.0-snapshot jetty/hsqldb org.xwiki.platform:xwiki-platform-workspace-ui 5.0-SNAPSHOT Exactly the same problem: 2013-02-22 17:38:58.925:INFO::Started SelectChannelConnector@0.0.0.0:8080 STARTING 2013-02-22 17:38:58.938:INFO::---------------------------------- 2013-02-22 17:38:59.052:INFO::Server started, you can now open http://Enygma.XWiki:8080/ in your browser to access your wiki. 2013-02-22 17:38:59.052:INFO::---------------------------------- 2013-02-22 17:39:03,987 [http://localhost:8080/xwiki/bin/view/Main/WebHome] INFO .HibernateDataMigrationManager - Storage schema updates and data migrations are enabled 2013-02-22 17:39:04,009 [http://localhost:8080/xwiki/bin/view/Main/WebHome] INFO .HibernateDataMigrationManager - No data migration to apply for database [xwiki] currently in version [43000] 2013-02-22 17:39:04,010 [http://localhost:8080/xwiki/bin/view/Main/WebHome] INFO .HibernateDataMigrationManager - Checking Hibernate mapping and updating schema if needed for database [xwiki] org.xwiki.velocity.XWikiVelocityException: Failed to evaluate content with id [/templates/menuview.vm] at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:247) at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:187) at com.xpn.xwiki.render.XWikiVelocityRenderer.evaluate(XWikiVelocityRenderer.java:105) at com.xpn.xwiki.internal.template.DefaultPrivilegedTemplateRenderer.evaluate(DefaultPrivilegedTemplateRenderer.java:125) at com.xpn.xwiki.internal.template.DefaultPrivilegedTemplateRenderer.evaluateTemplate(DefaultPrivilegedTemplateRenderer.java:75) at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:1788) at com.xpn.xwiki.XWiki.parseTemplate(XWiki.java:1728) at com.xpn.xwiki.api.XWiki.parseTemplate(XWiki.java:854) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:395) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:384) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:173) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:280) at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:369) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:216) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:311) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:230) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:207) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:87) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342) at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:228) at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:187) at com.xpn.xwiki.render.XWikiVelocityRenderer.evaluate(XWikiVelocityRenderer.java:105) at com.xpn.xwiki.internal.template.DefaultPrivilegedTemplateRenderer.evaluate(DefaultPrivilegedTemplateRenderer.java:125) at com.xpn.xwiki.internal.template.DefaultPrivilegedTemplateRenderer.evaluateTemplate(DefaultPrivilegedTemplateRenderer.java:75) at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:1788) at com.xpn.xwiki.XWiki.parseTemplate(XWiki.java:1728) at com.xpn.xwiki.api.XWiki.parseTemplate(XWiki.java:854) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:395) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:384) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:173) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:280) at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:369) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:216) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:311) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:230) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:207) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:106) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342) at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:228) at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:187) at com.xpn.xwiki.render.XWikiVelocityRenderer.evaluate(XWikiVelocityRenderer.java:105) at com.xpn.xwiki.internal.template.DefaultPrivilegedTemplateRenderer.evaluate(DefaultPrivilegedTemplateRenderer.java:125) at com.xpn.xwiki.internal.template.DefaultPrivilegedTemplateRenderer.evaluateTemplate(DefaultPrivilegedTemplateRenderer.java:75) at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:1788) at com.xpn.xwiki.web.Utils.parseTemplate(Utils.java:151) at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:241) at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:116) 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:707) at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:538) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1352) at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:120) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323) at org.xwiki.wysiwyg.server.filter.ConversionFilter.doFilter(ConversionFilter.java:144) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323) at com.xpn.xwiki.plugin.webdav.XWikiDavFilter.doFilter(XWikiDavFilter.java:66) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323) at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323) at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:476) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119) at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:517) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:225) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:937) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:406) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:183) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:871) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117) at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:247) at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:149) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110) at org.eclipse.jetty.server.Server.handle(Server.java:346) at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:589) at org.eclipse.jetty.server.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:1048) at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:601) at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:214) at org.eclipse.jetty.server.HttpConnection.handle(HttpConnection.java:411) at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:535) at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:40) at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:529) at java.lang.Thread.run(Thread.java:722) Caused by: org.apache.velocity.exception.MethodInvocationException: Invocation of method 'canCreateWorkspace' in class org.xwiki.workspace.internal.WorkspaceManagerScriptService threw exception java.lang.LinkageError: loader constraint violation: when resolving method "com.xpn.xwiki.plugin.wikimanager.WikiManagerPluginApi.<init>(Lcom/xpn/xwiki/plugin/wikimanager/WikiManagerPlugin;Lcom/xpn/xwiki/XWikiContext;)V" the class loader (instance of org/xwiki/classloader/NamespaceURLClassLoader) of the current class, com/xpn/xwiki/plugin/wikimanager/WikiManagerPlugin, and the class loader (instance of org/xwiki/classloader/NamespaceURLClassLoader) for resolved class, com/xpn/xwiki/plugin/wikimanager/WikiManagerPluginApi, have different Class objects for the type inApi.<init>(Lcom/xpn/xwiki/plugin/wikimanager/WikiManagerPlugin;Lcom/xpn/xwiki/XWikiContext;)V used in the signature at /templates/menuview.vm[line 54, column 23] at org.apache.velocity.runtime.parser.node.ASTMethod.handleInvocationException(ASTMethod.java:261) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:187) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:280) at org.apache.velocity.runtime.parser.node.ASTReference.evaluate(ASTReference.java:530) at org.apache.velocity.runtime.parser.node.ASTAndNode.evaluate(ASTAndNode.java:106) at org.apache.velocity.runtime.parser.node.ASTAndNode.value(ASTAndNode.java:74) at org.apache.velocity.runtime.parser.node.ASTExpression.value(ASTExpression.java:71) at org.apache.velocity.runtime.parser.node.ASTSetDirective.render(ASTSetDirective.java:142) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:87) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342) at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:228) ... 99 more Caused by: java.lang.LinkageError: loader constraint violation: when resolving method "com.xpn.xwiki.plugin.wikimanager.WikiManagerPluginApi.<init>(Lcom/xpn/xwiki/plugin/wikimanager/WikiManagerPlugin;Lcom/xpn/xwiki/XWikiContext;)V" the class loader (instance of org/xwiki/classloader/NamespaceURLClassLoader) of the current class, com/xpn/xwiki/plugin/wikimanager/WikiManagerPlugin, and the class loader (instance of org/xwiki/classloader/NamespaceURLClassLoader) for resolved class, com/xpn/xwiki/plugin/wikimanager/WikiManagerPluginApi, have different Class objects for the type inApi.<init>(Lcom/xpn/xwiki/plugin/wikimanager/WikiManagerPlugin;Lcom/xpn/xwiki/XWikiContext;)V used in the signature at com.xpn.xwiki.plugin.wikimanager.WikiManagerPlugin.getPluginApi(WikiManagerPlugin.java:84) at com.xpn.xwiki.plugin.wikimanager.internal.WikiManagerScriptService.getAPI(WikiManagerScriptService.java:93) at com.xpn.xwiki.plugin.wikimanager.internal.WikiManagerScriptService.getWikiFromName(WikiManagerScriptService.java:159) at org.xwiki.workspace.internal.DefaultWorkspaceManager.getWorkspace(DefaultWorkspaceManager.java:487) at org.xwiki.workspace.internal.DefaultWorkspaceManager.isWorkspace(DefaultWorkspaceManager.java:604) at org.xwiki.workspace.internal.DefaultWorkspaceManager.canCreateWorkspace(DefaultWorkspaceManager.java:166) at org.xwiki.workspace.internal.WorkspaceManagerScriptService.canCreateWorkspace(WorkspaceManagerScriptService.java:94) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:395) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:384) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:173) ... 109 more AFAIR from the last time, if you don`t restart the wiki after just installing workspaces, it is working fine. Once you restart, the classloader gets messed-up.

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Thomas Mortagne added a comment - 23/Feb/13 13:22

I did exactly what you listed but with release version of org.xwiki.platform:xwiki-platform-workspace-ui and it was working well after the restart. Will try with the SNAPSHOT next week but I don't understand what is the diffrence.

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Thomas Mortagne added a comment - 23/Feb/13 13:22 I did exactly what you listed but with release version of org.xwiki.platform:xwiki-platform-workspace-ui and it was working well after the restart. Will try with the SNAPSHOT next week but I don't understand what is the diffrence.

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Thomas Mortagne added a comment - 07/Mar/13 16:06

OK I was able to reproduce it this time. The difference is that I tested on jetty/hsqldb distribution while I used to check on Tomcat. Going to be fun debugging this...

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Thomas Mortagne added a comment - 07/Mar/13 16:06 OK I was able to reproduce it this time. The difference is that I tested on jetty/hsqldb distribution while I used to check on Tomcat. Going to be fun debugging this...

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Thomas Mortagne added a comment - 07/Mar/13 16:50

Was finally able to reproduce it on tomcat too after several restarts.

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Thomas Mortagne added a comment - 07/Mar/13 16:50 Was finally able to reproduce it on tomcat too after several restarts.

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Thomas Steinbach added a comment - 14/Mar/13 18:42

Can't wait the 4.5.2 release. Spend about 12 hours on this bug over the last three days. Especially because this bug becomes active just after restart :V

Thanx for fixing it, because at present there is no standard way to install a clean XWiki with workspace manager.

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Thomas Steinbach added a comment - 14/Mar/13 18:42 Can't wait the 4.5.2 release. Spend about 12 hours on this bug over the last three days. Especially because this bug becomes active just after restart :V Thanx for fixing it, because at present there is no standard way to install a clean XWiki with workspace manager.

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Thomas Mortagne added a comment - 15/Mar/13 09:00

Well you could have done it the "old way" by putting the jars in WEB-INF/lib/

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Thomas Mortagne added a comment - 15/Mar/13 09:00 Well you could have done it the "old way" by putting the jars in WEB-INF/lib/

People

Assignee:

Thomas Mortagne

Reporter:

Eduard Moraru

Vote (0)

Watch (3)

Dates

Created:

14/Dec/12 19:09

Updated:

09/Apr/13 17:03

Resolved:

07/Mar/13 18:41

Date of First Response:

21/Feb/13 12:05 PM