Subject: RE: [xsl] id attribution in template match From: "Michael Kay" <mike@xxxxxxxxxxxx> Date: Tue, 29 Sep 2009 10:25:07 +0100 |
> Since switching from DTD-based to XSD-based documents, a > number of templates which make use of the id() function have > stopped working. It's not a processor problem because it > occurs with Xalan, Saxon and libxslt. An XSLT 1.0 processor is unlikely to have any mechanism to recognize ID types notified by a schema processor rather than a DTD processor. Indeed, the XSLT 1.0 specification does not really give them any license to do so (other than saying that you can construct the input data model any way you like). An XSLT 2.0 schema-aware processor will recognize ID types notified by a schema processor: so with schema-aware Saxon, provided you validate the input document using Saxon's schema processor, the types will be recognized. However, I would encourage use of key() rather than id(). Even in a DTD world, id() is excessively dependent on how the stylesheet is run. For example, some parsers (System.Xml is a notable example) do not notify the ID-ness of attributes to the application, and inserting a filter between the parser and the XSLT processor will often lose the information. Regards, Michael Kay http://www.saxonica.com/ http://twitter.com/michaelhkay
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