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From "Felix Meschberger (JIRA)" <j...@apache.org>
Subject [jira] Commented: (JCR-1261) Replace Xerces/JAXP based (un)marshalling by XPP3 based implementation
Date Sun, 09 Dec 2007 18:22:43 GMT

    [ https://issues.apache.org/jira/browse/JCR-1261?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12549850

Felix Meschberger commented on JCR-1261:

> i run into problems with an older version

Issue JCR-984 refers to an older version (as you said). I am proposing to go for MXP1 which
is XPP3.

> did you perform test (e.g. litmus)? or do you know whether they fixed these kind of problems?

I did perform some tests with Gnome VFS connection but no litmus yet. Will do that and report
the results.

> Replace Xerces/JAXP based (un)marshalling by XPP3 based implementation
> ----------------------------------------------------------------------
>                 Key: JCR-1261
>                 URL: https://issues.apache.org/jira/browse/JCR-1261
>             Project: Jackrabbit
>          Issue Type: Improvement
>          Components: jackrabbit-webdav
>    Affects Versions: 1.3.3
>            Reporter: Felix Meschberger
>         Attachments: JCR-1261.patch
> Proposing to replace the current Xerces/JAXP based implementation of XML data unmarshalling
and marshalling to be replaced by a MXP ([1]) based implementation. MXP is an implementation
of the XML PullParser API [2] and provides a very mall footprint (120KB) and far better performance
than Xerces (my tests showed around 50% performance increase over Xerces for both unmarshalling
and marshalling, see also [3]).
> Why do I care ? I would like to include WebDAV functionality into Sling and bundle is
with as little dependencies as possible ( the xpp3 lib might even be bundled into this project
to minimize dependencies). In addition, I think XML (un)marshalling performance is crucial
in any WebDAV solution. For this reason, this project can only win if we add a more performing
> [1] http://www.extreme.indiana.edu/xgws/xsoap/xpp/mxp1/
> [2] http://www.xmlpull.org
> [3] http://www.extreme.indiana.edu/~aslom/xpp_sax2bench/results.html

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