[xwiki-devs] Problem: migration from XEM 4.5.4 to XE 5.2-SNAPSHOT

Hi devs. I am testing the migration from XEM 4.5.4 to XE 5.2 (local build). Sorin has already reported some problems in JIRA. For me, the problem occurs when I use the "upgrade all wikis" option. Let me explain it: = Prerequisites = 1. Install a new XEM 4.5.4. 2. Create a workspace with WorkspaceManager (called 'workspace1') 3. Create a new subwiki with WikiManager (called 'subwiki1') - I create it from a XAR template which is xwiki-enterprise-ui-all. = Upgrade, part 1 = 1. Replace the webapp with a 5.2. 2. Put your own maven directory as the extension repository. (in xwiki.properties: extension.repositories=local:maven:file://${sys:user.home}/.m2/repository) 3. Upgrade the main wiki It works: - For example Main.SpaceIndex is in version 2.1. - In the "installed extensions" menu, I can see all extensions correctly upgraded. = Upgrade, part 2 = == Scenario 1 == 1. In the DW, choose "Upgrade all wikis. Choose this option if all wikis are administrated by the same entity.". It displays "All extensions are up to date. " But: 'workspace1' is not upgraded: - for example Panels.WorkspaceInformationPanel is still in version 1.1 - In the "installed extensions" menu, I see 'XWiki Enterprise - UI All'. It has not been upgraded because there is no new version for it. It has been replaced by xwiki-enterprise-ui-wiki-all. 'subwiki1' is not upgraded: - for example Main.SpaceIndex is still in version 1.1 - In the "installed extensions" menu, I see 'XWiki Enterprise - UI All ' with the message 'Installed but not valid'. It has not been upgraded because there is no new version for it. It has been replaced by xwiki-enterprise-ui-common. == Scenario 2 == 1. In the DW, choose "Upgrade only the current wiki. Choose this option if each wiki is administrated by a separate entity. In this case it's best if each wiki is upgraded by its owner. ". 2. Go to every subwiki, logged as Admin. You will see the DW. 3. Select "Yes, this is an upgrade". Note: if you upgrade a subwiki, the proposed UI will be XWiki Enterprise - UI - Common meanwhile if you upgrade a workspace, it will be XWiki Enterprise - UI - Wiki. It is normal. 4. You will see "Administration Application - 5.2-SNAPSHOT - Installed version 4.5.4 is not valid", and the same for several extensions. 5. Click on "continue", anyway. All is OK. In the "installed extensions" menu, I can see all extensions correctly upgraded. = Conclusion = - The scenario 1 don't work at all. - In the scenario 2, it displays "Installed version 4.5.4 is not valid" which is disturbing, because everything go right in the end. As Marius and Thomas explained me: How can we solve these issues? Thanks, Guillaume Louis-Marie Delhumeau