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Re: [xml-dev] Processing and Serialization of FIXED attributes

Hi Mike,

I think Jim wants this on the serialization part, while -expand:off 
seems to apply to loading a document. He needs the values for processing 
the document but when the processing is done he does not want to save 
values that come from the DTD/schema.

Hi Jim,

The values added by the parser that are not present in the XML document 
itself can be identified at SAX level by looking at the isSpecified() 
property - if this is true then the value comes from the document, 
otherwise the value comes from the DTD/schema. See for example:

Hope this helps!

Best Regards,
George Cristian Bina
<oXygen/> XML Editor, Schema Editor and XSLT Editor/Debugger

On 6/11/13 10:02 AM, Michael Kay wrote:
> Saxon has an option (-expand:off) to suppress the expansion of fixed
> attribute values defined in the schema or DTD.
> Michael Kay
> Saxonica
> On 11 Jun 2013, at 04:47, Jim Tivy wrote:
>> Hello
>> The DITA XML DTD has a number of #FIXED declarations in the DTDs that
>> imply fixed values for class attributes.
>> When this is processed in SAX and serialized the DITA class attributes
>> are also serialized.
>> It would be cleaner, for future XML authors to not have to see these
>> class attributes inlined into the XML document.
>> Do XSLT or other serializers commonly take out FIXED attributes or
>> does the infoset mark them so they are not serialized – or is the
>> usual form to serialize these.
>> Inhttp://www.w3.org/TR/xslt-xquery-serialization-30/#xml-outputit
>> states “MAY”
>> ·  Thereconstructed tree
>> <http://www.w3.org/TR/xslt-xquery-serialization-30/#reconstructed-tree>*MAY*contain
>> additional attributes and textnodes
>> <http://www.w3.org/TR/xslt-xquery-serialization-30/#dt-node>resulting
>> from the expansion of default and fixed values in its DTD or schema;
>> also, in the presence of a DTD, non-CDATA attributes may lose
>> whitespace characters as a result of attribute value normalization.
>> My question is, what do most java based implementations of XLST
>> processors, SAX processors and associated serializers do with respect
>> to inlining or stripping out #FIXED attributes.
>> Jim

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