- From: Gignac Donald A CRBE <GignacDA@nswccd.navy.mil>
- Date: Thu, 24 May 2001 13:51:53 -0400
- To: "'www-xml-schema-comments@w3.org'" <www-xml-schema-comments@w3.org>
- Cc: "Garner F J (Joe) CRBE" <GarnerFJ@nswccd.navy.mil>, "Westbrook Evelyn L (Lori) CRBE" <WestbrookEL@nswccd.navy.mil>, Junod L J II CRBE <JunodLJ@nswccd.navy.mil>
Ten schema examples in part 0: "Primer" are not in conformance with the "Structures" DTD in appendix G of part 1: "Structures". They begin with the following "schema" tags. Section 3.1 "Target Namespaces & Unqualified Locals" "Purchase Order Schema with Target Namespace, po1.xsd " <schema xmlns="http://www.w3.org/2001/XMLSchema" xmlns:po="http://www.example.com/PO1" targetNamespace="http://www.example.com/PO1" elementFormDefault="unqualified" attributeFormDefault="unqualified"> Section 3.2 "Qualified Locals" "Modifications to po1.xsd for Qualified Locals" <schema xmlns="http://www.w3.org/2001/XMLSchema" xmlns:po="http://www.example.com/PO1" targetNamespace="http://www.example.com/PO1" elementFormDefault="qualified" attributeFormDefault="unqualified"> "Requiring Qualification of Single Attribute" <schema xmlns="http://www.w3.org/2001/XMLSchema" xmlns:po="http://www.example.com/PO1" targetNamespace="http://www.example.com/PO1" elementFormDefault="qualified" attributeFormDefault="unqualified"> Section 3.3 "Global vs. Local Declaration" "Modified version of po1.xsd using only global element declarations" <schema xmlns="http://www.w3.org/2001/XMLSchema" xmlns:po="http://www.example.com/PO1" targetNamespace="http://www.example.com/PO1"> Section 4.1 "A Schema in Multiple Documents" "The International Purchase Order Schema, ipo.xsd" <schema targetNamespace="http://www.example.com/IPO" xmlns="http://www.w3.org/2001/XMLSchema" xmlns:ipo="http://www.example.com/IPO"> "Addresses for International Purchase Order schema, address.xsd" <schema targetNamespace="http://www.example.com/IPO" xmlns="http://www.w3.org/2001/XMLSchema" xmlns:ipo="http://www.example.com/IPO"> Section 4.5 "Redefining Types & Groups" "Using redefine in the International Purchase Order" <schema targetNamespace="http://www.example.com/IPO" xmlns="http://www.w3.org/2001/XMLSchema" xmlns:ipo="http://www.example.com/IPO"> Section 4.7 "Abstract Elements & Types" "Schema for Vehicles" <schema xmlns="http://www.w3.org/2001/XMLSchema" targetNamespace="http://cars.example.com/schema" xmlns:target="http://cars.example.com/schema"> Section 5 "Advanced Concepts III; The Quarterly Report" "The Report Schema, report.xsd" <schema targetNamespace="http://www.example.com/Report" xmlns="http://www.w3.org/2001/XMLSchema" xmlns:r="http://www.example.com/Report" xmlns:xipo="http://www.example.com/IPO" elementFormDefault="qualified"> Section 5.4.1 "Type Libraries" "Example Currency Type in Type Library" <schema targetNamespace="http://www.example.com/Currency" xmlns:c="http://www.example.com/Currency" xmlns="http://www.w3.org/2001/XMLSchema"> In each of these examples, the default name space is xmlns="http://www.w3.org/2001/XMLSchema" and so the "p" parameter entity specifying the prefix is defined as <!ENTITY % p ""> For the above examples, the "s" parameter entities specifying the suffix are defined as <!ENTITY % s ":po"> <!ENTITY % s ":po"> <!ENTITY % s ":po"> <!ENTITY % s ":po"> <!ENTITY % s ":ipo"> <!ENTITY % s ":ipo"> <!ENTITY % s ":ipo"> <!ENTITY % s ":target"> <!ENTITY % s ":r"> <!ENTITY % s ":c"> respectively. The relevant declarations in the "structures" DTD in appendix G of part 1: "Structures" are <!ENTITY % nds 'xmlns%s;'> <!ENTITY % schema "%p;schema"> <!ATTLIST %schema; targetNamespace %URIref; #IMPLIED version CDATA #IMPLIED %nds; %URIref; #FIXED 'http://www.w3.org/2001/XMLSchema' xmlns CDATA #IMPLIED finalDefault %complexDerivationSet; '' blockDefault %blockSet; '' id ID #IMPLIED elementFormDefault %formValues; 'unqualified' attributeFormDefault %formValues; 'unqualified' xml:lang CDATA #IMPLIED %schemaAttrs;> The "URIref" parameter entity is defined in the "datatype" DTD in appendix B of part 2: "Datatypes as <!ENTITY % URIref "CDATA"> For the first example above, the ATTLIST declaration simplifies to <!ATTLIST schema ... xmlns:po CDATA #FIXED 'http://www.w3.org/2001/XMLSchema'' xmlns CDATA #IMPLIED ... > This results in a conflict between the "xmlns:po" attribute specification on the "schema" tag xmlns:po="http://www.example.com/PO1" and the attribute's #FIXED default value of 'http://www.w3.org/2001/XMLSchema''. There are similar conflicts for the other nine schema examples above. The simplest solution seems to be that of switching the default value of the attribute defined by "xmlns%s;;" and that of the "xmlns" attribute in the "structures" DTD. That is, redefine %nds; %URIref; #FIXED 'http://www.w3.org/2001/XMLSchema' xmlns CDATA #IMPLIED as %nds; %URIref; #IMPLIED xmlns CDATA #FIXED 'http://www.w3.org/2001/XMLSchema' Donald Gignac "gignacda@nswccd.navy.mil" 301-227-3348
Received on Thursday, 24 May 2001 13:52:24 UTC