namespace-alias result-prefix

Hello,

As far as I can see, the current namespace-alias
implementation does exactly what is necessary 
according to the standard. Unfortunately, the standard
defines what should happen with the 
namespace itself, but does not specify which prefix should
be used in the result.

The current libxslt (well, I'm using libxslt 1.1.15, but it
probably has not changed since; at 
least there is nothing about it in the changelog) just
copies the prefix used in the stylesheet.

As a result, a stylesheet that starts with

<?xml version="1.0"
encoding="utf-8"?>
<xsl:stylesheet version="1.0" xmlnssl=&
quot;http://www.w3.or
g/1999/XSL/Transform" 
xmlns:new="http://www.
w3.org/1999/XSL/TransformAlias">
     <xsl:namespace-alias
stylesheet-prefix="new"
result-prefix="xsl"/>
     <xsl:output method="xml"
version="1.0" encoding="utf-8"
indent="yes"/>

will generate a stylesheet that starts with

<?xml version="1.0"
encoding="utf-8"?>
<new:stylesheet xmlns:new="http://www.w3.or
g/1999/XSL/Transform">
     <new:output ...

which is syntactically correct, but could confuse a less
experienced stylesheet writer.

As we all like to standardise  I would
suggest to use the value of result-prefix in the 
output instead. That is, if there is just a single alias for
a given namespace. I can't find any 
reason for a second one, but maybe someone else does. In
that case I would suggest to use the 
first alias.

Please let me know whether a patch that makes this change
would make it into the library, in 
which case I'll try to create one.


-- 
with kind regards,

Age Jan Kuperus
Wageningen UR Library
_______________________________________________
xml mailing list, project page  http://xmlsoft.org/
xmlgnome.org
http://mai
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Age Jan Kuperus wrote:
> Hello,
> 
> As far as I can see, the current namespace-alias
implementation does exactly what is necessary 
> according to the standard. Unfortunately, the standard
defines what should happen with the 
> namespace itself, but does not specify which prefix
should be used in the result.
> 
> The current libxslt (well, I'm using libxslt 1.1.15,
but it probably has not changed since; at 
> least there is nothing about it in the changelog) just
copies the prefix used in the stylesheet.
> 
> As a result, a stylesheet that starts with
> 
> <?xml version="1.0"
encoding="utf-8"?>
> <xsl:stylesheet version="1.0" xmlnssl=&
quot;http://www.w3.or
g/1999/XSL/Transform" 
> xmlns:new="http://www.
w3.org/1999/XSL/TransformAlias">
>      <xsl:namespace-alias
stylesheet-prefix="new"
result-prefix="xsl"/>
>      <xsl:output method="xml"
version="1.0" encoding="utf-8"
indent="yes"/>
> 
> will generate a stylesheet that starts with
> 
> <?xml version="1.0"
encoding="utf-8"?>
> <new:stylesheet xmlns:new="http://www.w3.or
g/1999/XSL/Transform">
>      <new:output ...
> 
> which is syntactically correct, but could confuse a
less experienced stylesheet writer.
> 
> As we all like to standardise  I would
suggest to use the value of result-prefix in the 
> output instead. 

{removed a line that on second thought didn't make sense]

> 
> Please let me know whether a patch that makes this
change would make it into the library, in 
> which case I'll try to create one.
> 
> 


-- 
with kind regards,

Age Jan Kuperus
Bibliotheek Wageningen UR
_______________________________________________
xml mailing list, project page  http://xmlsoft.org/
xmlgnome.org
http://mai
l.gnome.org/mailman/listinfo/xml

Age Jan Kuperus wrote:
> Hello,
> 
> As far as I can see, the current namespace-alias
implementation does exactly what is necessary 
> according to the standard. Unfortunately, the standard
defines what should happen with the 
> namespace itself, but does not specify which prefix
should be used in the result.
> 
> The current libxslt (well, I'm using libxslt 1.1.15,
but it probably has not changed since; at 
> least there is nothing about it in the changelog) just
copies the prefix used in the stylesheet.
> 
> As a result, a stylesheet that starts with
> 
> <?xml version="1.0"
encoding="utf-8"?>
> <xsl:stylesheet version="1.0" xmlnssl=&
quot;http://www.w3.or
g/1999/XSL/Transform" 
> xmlns:new="http://www.
w3.org/1999/XSL/TransformAlias">
>      <xsl:namespace-alias
stylesheet-prefix="new"
result-prefix="xsl"/>
>      <xsl:output method="xml"
version="1.0" encoding="utf-8"
indent="yes"/>
> 
> will generate a stylesheet that starts with
> 
> <?xml version="1.0"
encoding="utf-8"?>
> <new:stylesheet xmlns:new="http://www.w3.or
g/1999/XSL/Transform">
>      <new:output ...
> 
> which is syntactically correct, but could confuse a
less experienced stylesheet writer.
> 
> As we all like to standardise  I would
suggest to use the value of result-prefix in the 
> output instead. 

{removed a line that on second thought didn't make sense]

> 
> Please let me know whether a patch that makes this
change would make it into the library, in 
> which case I'll try to create one.
> 
> 


-- 
with kind regards,

Age Jan Kuperus
Bibliotheek Wageningen UR
_______________________________________________
xml mailing list, project page  http://xmlsoft.org/
xmlgnome.org
http://mai
l.gnome.org/mailman/listinfo/xml

Age Jan Kuperus wrote:
> Hello,
> 
> As far as I can see, the current namespace-alias
implementation does exactly what is necessary 
> according to the standard. Unfortunately, the standard
defines what should happen with the 
> namespace itself, but does not specify which prefix
should be used in the result.
> 
> The current libxslt (well, I'm using libxslt 1.1.15,
but it probably has not changed since; at 
> least there is nothing about it in the changelog) just
copies the prefix used in the stylesheet.
> 
> As a result, a stylesheet that starts with
> 
> <?xml version="1.0"
encoding="utf-8"?>
> <xsl:stylesheet version="1.0" xmlnssl=&
quot;http://www.w3.or
g/1999/XSL/Transform" 
> xmlns:new="http://www.
w3.org/1999/XSL/TransformAlias">
>      <xsl:namespace-alias
stylesheet-prefix="new"
result-prefix="xsl"/>
>      <xsl:output method="xml"
version="1.0" encoding="utf-8"
indent="yes"/>
> 
> will generate a stylesheet that starts with
> 
> <?xml version="1.0"
encoding="utf-8"?>
> <new:stylesheet xmlns:new="http://www.w3.or
g/1999/XSL/Transform">
>      <new:output ...
> 
> which is syntactically correct, but could confuse a
less experienced stylesheet writer.
> 
> As we all like to standardise  I would
suggest to use the value of result-prefix in the 
> output instead. 

{removed a line that on second thought didn't make sense]

> 
> Please let me know whether a patch that makes this
change would make it into the library, in 
> which case I'll try to create one.
> 
> 


-- 
with kind regards,

Age Jan Kuperus
Bibliotheek Wageningen UR
_______________________________________________
xml mailing list, project page  http://xmlsoft.org/
xmlgnome.org
http://mai
l.gnome.org/mailman/listinfo/xml

Hi,

This issue is related to
http
://bugzilla.gnome.org/show_bug.cgi?id=341325
and a bit of
http
://bugzilla.gnome.org/show_bug.cgi?id=313711

I changed the processor to generate the
"result-prefix" prefix
in the refactored code paths (define XSLT_REFACTORED); but
since
I cannot foresee when we'll be able to enable this code,
a patch for the current behaviour would be good, I think.
The current code performs aliasing during transformation,
every
time it hits a literal result element; the refactored code
computes the result prefix/namespace at compilation time.

Note that Xalan and the old Saxon behaves the same way
as Libxml2 currently does for XSLT 1.0. Only in the XSLT 2.0
spec, the resulting prefix needs to be the
"result-prefix";
but the prefix still might be changed if there's a
namespace
clash (a rather unlikely scenario).

(by the way: direct Libxslt related issues to xsltgnome.org)

Greetings from the unemployed front 

Kasimier

-------- Original-Nachricht --------
Datum: Tue, 12 Sep 2006 17:07:50 +0200

> Age Jan Kuperus wrote:
> > Hello,
> > 
> > As far as I can see, the current namespace-alias
implementation does
> exactly what is necessary 
> > according to the standard. Unfortunately, the
standard defines what
> should happen with the 
> > namespace itself, but does not specify which
prefix should be used in
> the result.
> > 
> > The current libxslt (well, I'm using libxslt
1.1.15, but it probably has
> not changed since; at 
> > least there is nothing about it in the changelog)
just copies the prefix
> used in the stylesheet.
> > 
> > As a result, a stylesheet that starts with
> > 
> > <?xml version="1.0"
encoding="utf-8"?>
> > <xsl:stylesheet version="1.0"
> xmlnssl=&
quot;http://www.w3.or
g/1999/XSL/Transform" 
> > xmlns:new="http://www.
w3.org/1999/XSL/TransformAlias">
> >      <xsl:namespace-alias
stylesheet-prefix="new"
result-prefix="xsl"/>
> >      <xsl:output method="xml"
version="1.0" encoding="utf-8"
> indent="yes"/>
> > 
> > will generate a stylesheet that starts with
> > 
> > <?xml version="1.0"
encoding="utf-8"?>
> > <new:stylesheet xmlns:new="http://www.w3.or
g/1999/XSL/Transform">
> >      <new:output ...
> > 
> > which is syntactically correct, but could confuse
a less experienced
> stylesheet writer.
> > 
> > As we all like to standardise  I would
suggest to use the value of
> result-prefix in the 
> > output instead. 
> 
> {removed a line that on second thought didn't make
sense]
> 
> > 
> > Please let me know whether a patch that makes this
change would make it
> into the library, in 
> > which case I'll try to create one.
> > 
> > 
> 
> 
> -- 
> with kind regards,
> 
> Age Jan Kuperus
> Bibliotheek Wageningen UR

[...]
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