Hi,
I have stumbled across this before. SVG 1.2 requires that if there is
an SVG id attribute, there must also be a corresponding id attribute
in the XML namespace. However, what Batik does is this: If an SVG id
attribute is set, it automatically sets an id attribute in the XML
namespace - however, when calling the setAttributeNS method, it uses
the local name for the id attribute instead of the qualified name (see
AbstractElement and SVGOMElement).
The correct output of Paul's example would be:
<?xml version="1.0"?>
<!DOCTYPE svg PUBLIC '-//W3C//DTD SVG 1.0//EN' 'http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd'
>
<svg xmlns="http://www.w3.org/2000/svg"; xmlns:xlink="http://www.w3.org/1999/xlink
" version="1.2">
<g id="test" xml:id="test"><text>ANY CONTENT</text></g>
</svg>
This can be achieved by passing the qualified name for the XML id
attribute ("xml:id") to the setAttributeNS method instead of the local
name.
With the current implementation of Batik, it is impossible to parse a
serialized SVG 1.2 document containing id attributes, because the
parser will complain about the duplicate id attribute.
Best regards,
Daniel
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