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From "Florent Guillaume (JIRA)" <j...@apache.org>
Subject [jira] Created: (JCR-542) Allow the removal of an item even if its schema has changed
Date Fri, 11 Aug 2006 00:47:14 GMT
Allow the removal of an item even if its schema has changed
-----------------------------------------------------------

                 Key: JCR-542
                 URL: http://issues.apache.org/jira/browse/JCR-542
             Project: Jackrabbit
          Issue Type: Improvement
          Components: core
    Affects Versions: 1.0.1
            Reporter: Florent Guillaume
            Priority: Minor


During schema migrations, it is often the case that an item definition changes. For instance,
a property may move from type Long to type String.
However when jackrabbit is restarted, it's impossible to remove any node having "old" properties:

javax.jcr.nodetype.ConstraintViolationException: no matching property definition found for
{}myprop
        at org.apache.jackrabbit.core.nodetype.EffectiveNodeType.getApplicablePropertyDef(EffectiveNodeType.java:797)
        at org.apache.jackrabbit.core.NodeImpl.getApplicablePropertyDefinition(NodeImpl.java:913)
        at org.apache.jackrabbit.core.ItemManager.getDefinition(ItemManager.java:161)
        at org.apache.jackrabbit.core.ItemManager.createPropertyInstance(ItemManager.java:522)
        at org.apache.jackrabbit.core.ItemManager.createItemInstance(ItemManager.java:477)
        at org.apache.jackrabbit.core.ItemManager.getItem(ItemManager.java:320)
        at org.apache.jackrabbit.core.NodeImpl.onRemove(NodeImpl.java:674)
        at org.apache.jackrabbit.core.NodeImpl.removeChildNode(NodeImpl.java:623)
        at org.apache.jackrabbit.core.ItemImpl.internalRemove(ItemImpl.java:848)
        at org.apache.jackrabbit.core.ItemImpl.remove(ItemImpl.java:1034)

I don't understand enough of the internals to know if it's easy, but could something be made
more lenient to allow such removals?


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