Hi Vincent,
I don't know what wrong could happen, but what I know for sure, is that
missing to set the value in XWikiPreferences during a migration could cause
a complete mess.
Therefore, I am +1 to have the proper default to false.
Thanks,
On Tue, Sep 1, 2015 at 5:37 PM, vincent(a)massol.net <vincent(a)massol.net>
wrote:
  Hi,
 Some analysis that took me time so I’m putting it here in case it helps
 someone and for us to consider changing the way this velocity parameter
 works.
 Problem: I was moving the Annotation functional test from enterprise to
 platform and the test was failing because there are 2 Annotations entries
 displayed in the More Actions menu and the PageObjects picks the first one
 (the wrong one). This doesn’t show in XE, nor in an empty wiki.
 Cause:
 * If you’re in XE, then we provide a custom XWikiPreferences which has
 showannotations set to false. Thus Comments and Annotations are merged
 * If you’re in an empty wiki, then there’s no XWikiPreferences but there’s
 also no AnnotationConfig page and thus this code in xwikivars.vm sets
 showannotations to false:
 #retrieveSetting('showannotations' $settingValue)
 #set ($showannotations = $settingValue)
 #if ($showannotations)
   ## The general settings allow displaying the tab
   #set ($showannotations = false)
   #if ($xwiki.exists('AnnotationCode.AnnotationConfig'))
     #set ($annotationConfigObject =
$xwiki.getDocument('AnnotationCode.AnnotationConfig').getObject('AnnotationCode.AnnotationConfig'))
     #if ($annotationConfigObject.getProperty('activated').value != 0 &&
!$annotationConfigObject.getProperty('exceptionSpaces').value.contains($doc.space))
       #set ($showannotations = true)
       #set ($annotationClass =
 $annotationConfigObject.getProperty('annotationClass').value)
       #set ($annotationCount = $doc.getObjects($annotationClass).size())
     #end
   #end
 #end
 * If you’re in the functional test of the annotation module. You don’t
 have XWikiPreferences but you do have an AnnotationConfig object and thus
 showannotations = true, thus displaying the 2 tabs: both the Comments tab
 and the Annotation tab.
 Am I the only one to believe that Comments and Annotations should be
 merged by default, ie that by default showannotations = false without
 having to override it in XWikiPreferences? I guess we did this for backward
 compatibility? Can you imagine what problem we would have if we changed the
 default now?
 Thanks
 -Vincent
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