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Restrict <CRLF> to the value \r\n ... the instance is <CRLF>\r\n</CRLF> ... error on validation -- why?

From: Costello, Roger L. <costello@mitre.org>
Date: Wed, 24 Oct 2012 12:55:10 +0000
To: "xmlschema-dev@w3.org" <xmlschema-dev@w3.org>
Message-ID: <B5FEE00B53CF054AA8439027E8FE17751E6924D5@IMCMBX04.MITRE.ORG>
Hello Folks,

The following schema declares two ENTITIES, one for carriage return and one for line feed. And then it restricts the value of the <CRLF> element by referencing those ENTITIES.

-------------------------------------------------
                CRLF.xsd
-------------------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE xs:schema [
<!ENTITY CR "&#13;">
<!ENTITY LF "&#10;">
]>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">

    <xs:element name="Test">
        <xs:complexType>
            <xs:sequence>
                <xs:element name="CRLF" maxOccurs="unbounded">
                    <xs:simpleType>
                        <xs:restriction base="xs:string">
                            <xs:pattern value="&CR;&LF;"/>
                        </xs:restriction>
                    </xs:simpleType>
                </xs:element>
            </xs:sequence>
        </xs:complexType>
    </xs:element>

</xs:schema>

In an instance document the value of <CRLF> should be a carriage return followed by a line feed, right?

-------------------------------------------------
                CRLF.xml
-------------------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<Test>
        <CRLF>&#13;&#10;</CRLF>
</Test>

However, when I validate that instance document I get this error message:

    The content "\r\n" of element <CRLF> does not match 
    the required simple type. Value "\r\n" contravenes the 
    pattern facet "  " of the type of element CRLF.

That makes no sense. The pattern facet clearly specifies "\r\n"

What am I doing wrong?

/Roger
Received on Wednesday, 24 October 2012 12:55:38 UTC

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