I've recently upgraded a wiki on the farm and the key documents that
should not be imported in an upgrade are:
XWiki.XWikiPreferences
XWiki.WebPreferences
Main.WebPreferences (and all other spaces WebPreferences pages)
XWiki.XWikiAllGroup (list of users)
XWiki.AdminGroup (list of admins)
Main.WebHome (usually modified)
and other content page modified (panels, etc..)
Indeed it would be usefull to have an "upgrade" xar and a "install"
xar
Ludovic
Vincent Massol a écrit :
 On Apr 20, 2007, at 10:49 AM, Sergiu Dumitriu wrote:
  I think AllUsers should not be included in the
XAR.
 Or even better, we should provide two XARs, one with all files except
 critical ones (AllUsers, Preferences, Admin), which can be used for
 upgrading an existing wiki, and one including these files. I know
 that users can unselect the above files from the complete archive,
 but I also know that users don't read instructions and aren't careful
 enough. 
 ... especially as we don't have any documentation on what needs to be
 imported and when..
 -Vincent
 On 4/20/07, *Michael Guntli* <michael.guntli(a)leica-geosystems.com
 <mailto:michael.guntli@leica-geosystems.com>> wrote:
     I think i know what the problem is.
     that happens if you import the *.xar file and it overwrites the
     existing
     global rights.. Then you have to select all users again and
     assign them to
     the all users group.. But then i get an exception, but it still
     works..
     Exception:
     Error number 3201 in 3: Exception while saving document
     XWiki.XWikiPreferences
     Wrapped Exception: could not update:
     [com.xpn.xwiki.objects.StringProperty#component[id,name]{id=1929900568,
     name=users}]
     com.xpn.xwiki.XWikiException: Error number 3201 in 3: Exception
     while saving
     document XWiki.XWikiPreferences
     Wrapped Exception: could not update:
     [com.xpn.xwiki.objects.StringProperty#component
     [id,name]{id=1929900568,
     name=users}]
             at
     com.xpn.xwiki.store.XWikiHibernateStore.saveXWikiDoc(XWikiHibernateStore.java:314)
             at
     com.xpn.xwiki.store.XWikiCacheStore.saveXWikiDoc(XWikiCacheStore.java
     :100)
             at
     com.xpn.xwiki.store.XWikiCacheStore.saveXWikiDoc(XWikiCacheStore.java:94)
             at com.xpn.xwiki.XWiki.saveDocument(XWiki.java:914)
             at com.xpn.xwiki.web.SaveAction.save
     <http://web.SaveAction.save>(SaveAction.java :114)
             at com.xpn.xwiki.web.SaveAction.action
     <http://web.SaveAction.action>(SaveAction.java:123)
             at com.xpn.xwiki.web.XWikiAction.execute
     <http://web.XWikiAction.execute>(XWikiAction.java:149)
             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.doPost(ActionServlet.java:432)
             at
     javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
             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
     com.xpn.xwiki.web.SetCharacterEncodingFilter.doFilter
<http://web.SetCharacterEncodingFilter.doFilter>(SetCharacterEncodingFilter.java:118)
             at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
             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.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:869)
             at
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
             at
     org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
             at
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
             at
     org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
             at java.lang.Thread.run(Thread.java:619)
     Wrapped Exception:
     com.mysql.jdbc.MysqlDataTruncation: Data truncation: Data
     truncated for
     column 'XWS_VALUE' at row 1
             at
     com.mysql.jdbc.SQLError.convertShowWarningsToSQLWarnings(SQLError.java:695)
             at
     com.mysql.jdbc.MysqlIO.scanForAndThrowDataTruncation(MysqlIO.java:3317)
             at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1741)
             at com.mysql.jdbc.Connection.execSQL(Connection.java:2376)
             at com.mysql.jdbc.Connection.execSQL(Connection.java:2297)
             at
     com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1860)
             at
     com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1957)
             at
     com.mysql.jdbc.PreparedStatement.executeUpdate
     (PreparedStatement.java:1880)
             at
     com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1741)
             at
org.apache.commons.dbcp.DelegatingPreparedStatement.executeUpdate(DelegatingPreparedStatement.java
     :101)
             at
org.apache.commons.dbcp.DelegatingPreparedStatement.executeUpdate(DelegatingPreparedStatement.java:101)
             at
org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java
     :2208)
             at
org.hibernate.persister.entity.AbstractEntityPersister.updateOrInsert(AbstractEntityPersister.java:2118)
             at
org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java
     :2374)
             at
     org.hibernate.action.EntityUpdateAction.execute(EntityUpdateAction.java:84)
             at
     org.hibernate.engine.ActionQueue.execute(ActionQueue.java:243)
             at org.hibernate.engine.ActionQueue.executeActions
     (ActionQueue.java:227)
             at
     org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:141)
             at
org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java
     :296)
             at
org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
             at
     org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1009)
             at org.hibernate.impl.SessionImpl.managedFlush
     (SessionImpl.java:356)
             at
     org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:106)
             at
com.xpn.xwiki.store.XWikiHibernateBaseStore.endTransaction(XWikiHibernateBaseStore.java:573)
             at
com.xpn.xwiki.store.XWikiHibernateBaseStore.endTransaction(XWikiHibernateBaseStore.java:547)
             at
     com.xpn.xwiki.store.XWikiHibernateStore.saveXWikiDoc(XWikiHibernateStore.java:309)
             at
     com.xpn.xwiki.store.XWikiCacheStore.saveXWikiDoc(XWikiCacheStore.java:100)
             at
     com.xpn.xwiki.store.XWikiCacheStore.saveXWikiDoc(XWikiCacheStore.java:94)
             at com.xpn.xwiki.XWiki.saveDocument(XWiki.java :914)
             at com.xpn.xwiki.web.SaveAction.save
     <http://web.SaveAction.save>(SaveAction.java:114)
             at com.xpn.xwiki.web.SaveAction.action
     <http://web.SaveAction.action>(SaveAction.java:123)
             at com.xpn.xwiki.web.XWikiAction.execute
     <http://web.XWikiAction.execute>(XWikiAction.java:149)
             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.doPost(ActionServlet.java:432)
             at
     javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
             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
     com.xpn.xwiki.web.SetCharacterEncodingFilter.doFilter
<http://web.SetCharacterEncodingFilter.doFilter>(SetCharacterEncodingFilter.java:118)
             at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java
     :202)
             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.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:869)
             at
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
             at
     org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
             at
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
             at
     org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
             at java.lang.Thread.run(Thread.java:619)
 Sergiu
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http://purl.org/net/sergiu
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