- From: Bob Kline <bkline@rksystems.com>
- Date: Mon, 09 Feb 2009 12:07:13 -0500
- To: xmlschema-dev@w3.org
We've got XML documents which look (greatly simplified) like this: <?xml version='1.0' encoding='utf-8'?> <TopLevelElement cdr:ref='...' otherAttribute='...'>...</TopLevelElement> None of the element names and few of the attribute names in the documents include colons. The structures for the documents evolved well before the w3c bodies released their recommendations on namespaces and schemas. The use of colons in some of the attribute names was done to accomplish in a DTD-based, pre-namespace-aware world roughly the same thing which the namespace rec gives as its motivation (avoid stepping on names which would be the same without 'cdr:' part). When the namespace rec was released we added xmlns:cdr='...' to the top-level elements of the documents so namespace-aware processors wouldn't choke on the documents. In an attempt to migrate from DTD validation to XML Schema validation, we're running into a stumbling block. Since each schema document can have at most only one target namespace, we've put the definitions for the cdr prefixed attributes in one schema document, which has a target namespace. We then include that document in the schema document for the rest of the elements and types. Schema processors won't accept this, complaining that "[t]he target namespace of the included/redefined schema 'CdrNamespaceAttributes.xml' has to be absent, since the including/redefining schema has no target namespace." If that's so, how do we go about validating a document which looks like the one above using XML Schema? -- Bob Kline http://www.rksystems.com mailto:bkline@rksystems.com
Received on Tuesday, 10 February 2009 10:45:01 UTC