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From "fabrizio giustina (JIRA)" <j...@apache.org>
Subject [jira] Created: (JCR-1084) Maintan a stable ordering of properties in xml export
Date Fri, 24 Aug 2007 07:42:30 GMT
Maintan a stable ordering of properties in xml export
-----------------------------------------------------

                 Key: JCR-1084
                 URL: https://issues.apache.org/jira/browse/JCR-1084
             Project: Jackrabbit
          Issue Type: Improvement
    Affects Versions: 1.4
            Reporter: fabrizio giustina
            Priority: Minor


When exporting to xml (system view, not tested with document view) the order of properties
is not consistent.
This is not an issue with the jcr specification, since the order of properties is undefined,
but keeping the same (whatever) order in xml export could be useful.

At this moment if you try running a few import->export->import->export roundtrips
you will notice that the exported xml often changes. This is an example of the differences
you can see:

  <sv:property sv:name="jcr:uuid" sv:type="String">
    <sv:value>59357999-b4fb-45cd-8111-59277caf14b7</sv:value>
  </sv:property>
+  <sv:property sv:name="title" sv:type="String">
+    <sv:value>test</sv:value>
+  </sv:property>
  <sv:property sv:name="visible" sv:type="String">
    <sv:value>true</sv:value>
  </sv:property>
-  <sv:property sv:name="title" sv:type="String">
-    <sv:value>test</sv:value>
-  </sv:property>

If you may need to diff between two exported files that could be pretty annoying, you have
no clear way to understand if something has really changed or not.
I would propose to keep ordering consistent between export: an easy way could be sorting properties
alphabetically during export.

This behavior has been tested on a recent jackrabbit build from trunk (1.4-SNAPSHOT)





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