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From "Stefan Guggisberg (JIRA)" <j...@apache.org>
Subject [jira] Assigned: (JCR-62) import must not ignore xml prefixed attributes
Date Sun, 13 Mar 2005 13:07:54 GMT
     [ http://issues.apache.org/jira/browse/JCR-62?page=history ]

Stefan Guggisberg reassigned JCR-62:
------------------------------------

    Assign To: Peeter Piegaze  (was: Stefan Guggisberg)

> That is a significant loss of information, since xml:base, xml:lang, 
> and xml:id attributes are critical to the content. We should register 
> the xml prefix as a reserved namespace (not needing an xmlns declaration)
> and then treat it like any other attribute.

i agree that those attributes need to be handled,
however registering the xml prefix as a reserved 
namespace alone would IMO not solve the issue but
introduce further problems.

if e.g. "xml:lang" would be a legal property name 
and therefore "xml" a legal prefix in JCR, users 
could be e.g. tempted to use names such as "xml:data", 
"xml:foo" etc. those in turn would be illegal in
the Document View XML representation
(http://www.w3.org/TR/xml-names11/#xmlReserved).

i think that this is a specification issue. 
the specification should be clear about how 
the reserved attributes xml:base, xml:lang etc
are handled on Document View XML import.
also, the handling of the "xml" namespace
should be clearly defined.

reassigning to peeter


> import must not ignore xml prefixed attributes
> ----------------------------------------------
>
>          Key: JCR-62
>          URL: http://issues.apache.org/jira/browse/JCR-62
>      Project: Jackrabbit
>         Type: Bug
>   Components: xml
>     Reporter: Roy T. Fielding
>     Assignee: Peeter Piegaze
>     Priority: Blocker

>
> XML import currently ignores attributes that are in the xml namespace.
> e.g., DocViewImportHandler's startElement():
>                 if (atts.getQName(i).startsWith("xml:")) {
>                     // skipping xml:space, xml:lang, etc.
>                     log.debug("skipping reserved/system attribute " + atts.getQName(i));
>                     continue;
>                 }
> That is a significant loss of information, since xml:base, xml:lang, and xml:id attributes
are critical to the content.  We should register the xml prefix as a reserved namespace (not
needing an xmlns declaration) and then treat it like any other attribute.
> Here are some useful XML examples:
> http://xformsinstitute.com/essentials/browse/ch03s02.php
> http://www.zvon.org/HowTo/Output/
> http://www.w3.org/Math/testsuite/testsuite/TortureTests/Complexity/complex1.xml
> http://intertwingly.net/wiki/pie/EchoExample
> http://support.sas.com/onlinedoc/913/getDoc/en/engxml.hlp/a002973381.htm

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