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  1. XWiki Platform
  2. XWIKI-11800

Cannot change a list property from multiple select to single select if there is an instance that has no value selected

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Details

    • Unit
    • High
    • Trivial
    • N/A
    • N/A

    Description

      Follow this steps to reproduce:

      1. Create a class with only one property of type Database List
      2. Configure this property as multiple select
      3. Create a new page and add an object of this class but don't select any value for the Database List property
      4. Edit the class again and change the property from multiple select to single select. Save

      You get:

      A problem occurred while trying to process your request. Please contact the webmaster if this happens again.

      And the exception is:

      Caused by: java.lang.ClassCastException: com.xpn.xwiki.objects.ListProperty$NotifyList cannot be cast to java.lang.String
at com.xpn.xwiki.objects.BaseStringProperty.setValue(BaseStringProperty.java:40)
at com.xpn.xwiki.store.XWikiHibernateStore.saveXWikiDoc(XWikiHibernateStore.java:666)
... 52 more

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        Issue Links

          is related to

          Bug - A problem which impairs or prevents the functions of the product. XWIKI-299 Changing property layout of a list property in a class doesn' work (multiple select yes/no)

          • Major - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. XWIKI-6566 Changing the multiple select attribute of a ListProperty in an XWiki class occasionally causes a document to become unsavable.

          • Major - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. XWIKI-4825 Altering the storage properties of a DBList or DBTreeList property sometimes fails to save the changes

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. XWIKI-11806 Changing (list) property storage type in class editor fails when object instances exist in the class document

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Closed

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              mflorea Marius Dumitru Florea
              mflorea Marius Dumitru Florea
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              Dates

                Created:
                Updated:
                Resolved: