I used it too. it did work. But I could not validate it. Did you
validate your files or you implemented other ways to check for error?

I really appreciate your help.

Weiming

On Tue, 2003-11-18 at 09:48, G. Wade Johnson wrote:
> Remember, DTDs are not namespace-aware.
> 
> I did not extend the SVG DTD at all. I added elements (and attributes
> that were part of a separate namespace. For example,
> 
> <svg width="400" height="300"
>      xmlns="http://www.w3.org/2000/svg";
>      xmlns:xlink="http://www.w3.org/1999/xlink";
>      xmlns:gwj="http://www.anomaly.org/mock_namespace";>
> 
>   <g id="CoolComponent" gwj:extra="Extra attribute information">
>     <metadata>
>       <gwj:special>Putting the extra tags in a metadata tag is
>         probably the cleanest approach.</gwj:special>
>     </metadata>
>     <rect x="50" y="50" width="300" height="200" fill="blue"/>
>     <gwj:other id="NotPartOfSVG">But it is not required.</gwj:special>
>   </g>
> 
> </svg>
> 
> Warning: The above has not actually been tested. However, I've used
> all of the techniques I've shown in different SVG pages.
> 
> HTH,
> G. Wade
> 
> On 18 Nov 2003 09:37:41 -0700
> "Weiming Zhang" <[EMAIL PROTECTED]> wrote:
> 
> > Hi, Wade,
> > 
> > When you added new elements or attributes with different name space to
> > the file, did you use internal DTD to extend SVG DTD? The SVG
> > specification states it can be done with internal DTD. But I might
> > have to extend it quite a lot and I do not want to give a big internal
> > repetitive DTD to each file. Is there a way to do it with external
> > DTD?
> > 
> > Thanks.
> > 
> > Weiming
> > 
> > On Fri, 2003-10-31 at 11:09, [EMAIL PROTECTED] wrote:
> > > The way I did this on a similar project was to put the
> > > new elements and attributes in a different namespace.
> > > 
> > > Batik does not try to render those elements, but it does
> > > make them available through the DOM.
> > > 
> > > G. Wade
> > > 
> > > Weiming Zhang wrote:
> > > > Hi,
> > > > 
> > > > Thank you very much.
> > > > 
> > > >>>Is it possible to rendering such svg content with Batik? 
> > > >>
> > > >>    Yes, and no.  There are some issues with the above example,
> > > >>like Batik requires an SVGDocument with a 'getRoot' method that
> > > >>returns the 'root' SVG element.  So you might be able to write a
> > > >>'hacked' document object that 'behaved' correctly however...
> > > > 
> > > > I tried the sample from SVG specification but it did not work. You
> > > > are right, it has to have svg element as root for batik rendering.
> > > > 
> > > > 
> > > >>>I want to use
> > > >>>some custom XML tags to add some extra information to the
> > > >document. For>>example, I may specify for certain group of graphic
> > > >shapes, there are>>certain callbacks. Those callbacks will be
> > > >specified as either elements>>or attributes. 
> > > >>
> > > >>    This makes me think that you may want (or at least get away
> > > >with)>something that looks more like:
> > > >>
> > > >>      <svg:svg width="4cm" height="8cm" version="1.1"
> > > >>          xmlns="http://example.org";
> > > >>         xmlns:svg="http://www.w3.org/2000/svg";>
> > > >>        <svg:ellipse cx="2cm" cy="4cm" rx="2cm" ry="1cm">
> > > >>          <callback-list>
> > > >>             <!-- callbacks for the ellipse element -->
> > > >>             <callback name="foo" function="bar"/>
> > > >>          </callback-list>
> > > >>        </svg:ellipse>
> > > >>     </svg:svg>
> > > >>
> > > >>    This will work trivially "right out of the box".
> > > > 
> > > > This indeed works! But the callback related elements are not in
> > > > SVG DTD, so batik does not validate the document? If I make a DTD
> > > > or schema by adding some extra information to SVG DTD (is it
> > > > possible to do inheritance with a DTD?), how can I let batik know?
> > > > 
> > > > Thanks.
> > > > 
> > > > wz
> > > > 
> > > > 
> > > > 
> > > > 
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