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From "Stefan Guggisberg (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (JCR-3452) Modified property and child node definition are rejected
Date Thu, 29 Nov 2012 17:20:58 GMT

    [ https://issues.apache.org/jira/browse/JCR-3452?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13506599#comment-13506599
] 

Stefan Guggisberg commented on JCR-3452:
----------------------------------------

bq. AFAIU, making something more restrictive than before is considered a "major" change because
it could make existing content invalid.

correct. changes that might render existing content illegal according to the new definition
are considered major. 
only changes that have no effect on existing content (e.g. making a mandatory item non-mandatory)
are allowed.
                
> Modified property and child node definition are rejected
> --------------------------------------------------------
>
>                 Key: JCR-3452
>                 URL: https://issues.apache.org/jira/browse/JCR-3452
>             Project: Jackrabbit Content Repository
>          Issue Type: Bug
>    Affects Versions: 2.5.2
>            Reporter: Tom Quellenberg
>            Priority: Minor
>         Attachments: patch.txt
>
>
> NodeTypeDefDiff identifies modified properties and child nodes by QNodeDefinitionId and
QPropertyDefinitionId. Both classes have their own equals and hashCode methods. Thus, properties
and child nodes with trivial changes (changed required types or isMultiple) are always considered
as added and removed ( = major change) and never as changed.
> Additional, the check for required child node types seems wrong to me: adding additional
(alternative) constraints are considered as major change. I think, the opposite is true: removing
node types from the list of required types is a major change (there may exist child nodes
of the removed type), adding alternative constraints is a trivial change.
> There is one more change to the required child node types, which can easily be checked:
setting the required type to nt:base. This should always be possible.

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