A satisfactory alternative for our situation would be to hide the Admin user from all but users in the Admin group. That is a feature that I can see coming in handy for other scenarios as well (for example, someone leaves the organization but for some reason we don't want to remove them from the user directory). I would envision adding a 'Hide' flag or an 'Expiry Date' field to the user profile to determine whether or not the user should be displayed. Does anyone have an idea as to how this could be accomplished? A complementary feature of course would be to prevent the hidden user from logging in. In our case, we are using Active Directory authentication so we can take care of that outside of the xwiki software. -- View this message in context: http://xwiki.475771.n2.nabble.com/Deleting-Admin-user-causes-document-tree-t... Sent from the XWiki- Users mailing list archive at Nabble.com.

  On 23 Feb 2016 at 17:57:24, Mark Sack ([email protected](mailto:[email protected])) wrote:

A satisfactory alternative for our situation would be to hide the Admin user from all but users in the Admin group. That is a feature that I can see coming in handy for other scenarios as well (for example, someone leaves the organization but for some reason we don't want to remove them from the user directory). I would envision adding a 'Hide' flag or an 'Expiry Date' field to the user profile to determine whether or not the user should be displayed.

Does anyone have an idea as to how this could be accomplished?

First, note that you should perfectly be able to delete the admin user from your wiki and everything should continue to work well. There’s a very easy solution for this second question though. Just edit the admin user profile page and set it as hidden. It won’t appear anymore in the user directory or other places. Thanks -Vincent

A complementary feature of course would be to prevent the hidden user from logging in. In our case, we are using Active Directory authentication so we can take care of that outside of the xwiki software.

I'm not sure if this is of more than academic interest since the alternative of hiding the page works for me and, as per Thomas' comment, deleting Admin apparently has some severe consequences. In any event, I think the behaviour is specific to Postgres and not my environment as I reproduced it by creating a new VM from scratch. Here is the error message in catalina.out as per below. I've also included below the output of the javascript console. INFORMAÇÕES: Server startup in 51391 ms 2016-02-24 09:48:32,197 [XWiki initialization] INFO .HibernateDataMigrationManager - Storage schema updates and data migrations are enabled 2016-02-24 09:48:32,455 [XWiki initialization] INFO .HibernateDataMigrationManager - No data migration to apply for wiki [xwiki] currently in version [73000] 2016-02-24 09:48:32,456 [XWiki initialization] INFO .HibernateDataMigrationManager - Checking Hibernate mapping and updating schema if needed for wiki [xwiki] 2016-02-24 09:48:40,801 [XWiki initialization] INFO .a.DefaultAuthorizationManager - [programming] access has been denied for user [xwiki:XWiki.Admin] on [Public]: security checkpoint 2016-02-24 09:48:40,871 [XWiki initialization] ERROR cumentTranslationBundleFactory - Failed to register translation bundle from document [xwiki:WikiManager.Translations] org.xwiki.security.authorization.AccessDeniedException: Access denied when checking [programming] access to [Main Wiki] for user [xwiki:XWiki.Admin] at org.xwiki.security.authorization.DefaultAuthorizationManager.checkAccess(DefaultAuthorizationManager.java:94) ~[DefaultAuthorizationManager.class:na] at org.xwiki.localization.wiki.internal.DocumentTranslationBundleFactory.checkRegistrationAuthorization(DocumentTranslationBundleFactory.java:439) [DocumentTranslationBundleFactory.class:na] at org.xwiki.localization.wiki.internal.DocumentTranslationBundleFactory.registerTranslationBundle(DocumentTranslationBundleFactory.java:418) [DocumentTranslationBundleFactory.class:na] at org.xwiki.localization.wiki.internal.DocumentTranslationBundleFactory.loadTranslations(DocumentTranslationBundleFactory.java:233) [DocumentTranslationBundleFactory.class:na] at org.xwiki.localization.wiki.internal.DocumentTranslationBundleFactory.initialize(DocumentTranslationBundleFactory.java:207) [DocumentTranslationBundleFactory.class:na] at org.xwiki.component.embed.InitializableLifecycleHandler.handle(InitializableLifecycleHandler.java:39) [InitializableLifecycleHandler.class:na] at org.xwiki.component.embed.EmbeddableComponentManager.createInstance(EmbeddableComponentManager.java:322) [EmbeddableComponentManager.class:na] at org.xwiki.component.embed.EmbeddableComponentManager.getComponentInstance(EmbeddableComponentManager.java:424) [EmbeddableComponentManager.class:na] at org.xwiki.component.embed.EmbeddableComponentManager.getComponentInstance(EmbeddableComponentManager.java:392) [EmbeddableComponentManager.class:na] at org.xwiki.component.embed.EmbeddableComponentManager.getInstance(EmbeddableComponentManager.java:190) [EmbeddableComponentManager.class:na] at org.xwiki.component.embed.GenericProvider.getInstance(GenericProvider.java:111) [GenericProvider.class:na] at org.xwiki.component.embed.GenericProvider.get(GenericProvider.java:100) [GenericProvider.class:na] at org.xwiki.localization.wiki.internal.DocumentTranslationBundleInitializer.onEvent(DocumentTranslationBundleInitializer.java:82) [DocumentTranslationBundleInitializer.class:na] at org.xwiki.observation.internal.DefaultObservationManager.notify(DefaultObservationManager.java:304) [DefaultObservationManager.class:na] at org.xwiki.observation.internal.DefaultObservationManager.notify(DefaultObservationManager.java:269) [DefaultObservationManager.class:na] at com.xpn.xwiki.internal.XWikiInitializerJob.runInternal(XWikiInitializerJob.java:129) [XWikiInitializerJob.class:na] at org.xwiki.job.AbstractJob.runInContext(AbstractJob.java:205) [AbstractJob.class:na] at org.xwiki.job.AbstractJob.run(AbstractJob.java:188) [AbstractJob.class:na] at java.lang.Thread.run(Thread.java:745) [na:1.7.0_95] 2016-02-24 09:48:41,040 [XWiki Solr index job thread] INFO o.x.s.s.i.j.IndexerJob - Starting job of type [solr.indexer] with identifier [[solr, indexer]] 2016-02-24 09:48:43,529 [Active Installs Ping Thread] WARN a.i.c.ActiveInstallsPingThread - Failed to send Active Installation ping to [http://extensions.xwiki.org/activeinstalls]. Error = [SocketTimeoutException: Read timed out]. Will retry in [86400] seconds... 2016-02-24 09:48:50,496 [XWiki Solr index job thread] INFO o.x.s.s.i.j.IndexerJob - 262 documents added, 261 deleted and 0 updated during the synchronization of the Solr index. 2016-02-24 09:48:50,496 [XWiki Solr index job thread] INFO o.x.s.s.i.j.IndexerJob - Finished job of type [solr.indexer] with identifier [[solr, indexer]] 2016-02-24 09:50:13,715 [http://10.48.2.109:8080/xwiki/bin/get/XWiki/DocumentTree?outputSyntax=plain&...] ERROR o.x.v.i.DefaultVelocityEngine - Exception in macro #addNestedChildDocuments called at 36:xwiki:XWiki.DocumentTree[line 441, column 1] 2016-02-24 09:50:13,716 [http://10.48.2.109:8080/xwiki/bin/get/XWiki/DocumentTree?outputSyntax=plain&...] ERROR o.x.v.i.DefaultVelocityEngine - Exception in macro #addChildDocuments called at 36:xwiki:XWiki.DocumentTree[line 627, column 1] 2016-02-24 09:50:13,716 [http://10.48.2.109:8080/xwiki/bin/get/XWiki/DocumentTree?outputSyntax=plain&...] ERROR o.x.v.i.DefaultVelocityEngine - Exception in macro #addDocumentChildren called at 36:xwiki:XWiki.DocumentTree[line 1, column 1] 2016-02-24 09:50:13,716 [http://10.48.2.109:8080/xwiki/bin/get/XWiki/DocumentTree?outputSyntax=plain&...] ERROR o.x.v.i.DefaultVelocityEngine - Exception in macro #getChildren called at 36:xwiki:XWiki.DocumentTree[line 37, column 1] 2016-02-24 09:50:13,716 [http://10.48.2.109:8080/xwiki/bin/get/XWiki/DocumentTree?outputSyntax=plain&...] ERROR o.x.v.i.DefaultVelocityEngine - Exception in macro #handleDocumentTreeRequest called at 36:xwiki:XWiki.DocumentTree[line 3, column 1] The problem occurs when you try to expand a branch of the document tree. 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