Yes that looks good. It will only parse the data though. Do you need to unparse? To unparse you will need dfdl:outputValueCalc="{../Type}" on MixedCaseType, and dfdl:outputValueCalc="{../Subtype}" on MixedCaseSubtype.

Regards

Steve Hanson
Architect, IBM Data Format Description Language (DFDL)
Co-Chair, OGF DFDL Working Group
IBM SWG, Hursley, UK
smh@uk.ibm.com
tel:+44-1962-815848



From:        "Garriss Jr., James P." <jgarriss@mitre.org>
To:        "dfdl-wg@ogf.org" <dfdl-wg@ogf.org>,
Date:        20/06/2013 19:19
Subject:        [DFDL-WG] How to ignore case and validate an element with an        enumerated list
Sent by:        dfdl-wg-bounces@ogf.org

---

Mike came up with a solid solution to the problem I posted previously.  While not quite as elegant as adding the “dfdl:ignoreElementCase=yes” property that I would prefer, it’s good enough.  Thanks, Mike!
 
Here’s the relevant parts:
 
    <xsd:complexType name="MimeTypeType">
       <xsd:sequence>
           <xsd:sequence dfdl:hiddenGroupRef="MixedCaseMimeTypeGroup"/>
           <!-- logical representation of the type and subtype, where xPath is used to convert all the characters to lower case -->
           <xsd:element name="Type" dfdl:inputValueCalc="{ fn:lower-case(../MixedCaseType) }">
               <xsd:annotation>
                   <xsd:appinfo source="http://www.ogf.org/dfdl/dfdl-1.0/">
                       <dfdl:assert test="{ dfdl:checkConstraints(.) }"
                           message="The type must match one of the values on the enumerated list."/>
                   </xsd:appinfo>
               </xsd:annotation>
               <xsd:simpleType>
                   <xsd:restriction base="xsd:string">
                       <xsd:enumeration value="application"/>
                       <xsd:enumeration value="multipart"/>
                       <xsd:enumeration value="message"/>
                       <xsd:enumeration value="text"/>
                   </xsd:restriction>
               </xsd:simpleType>
           </xsd:element>
           <xsd:element name="Subtype" dfdl:inputValueCalc="{ fn:lower-case(../MixedCaseSubtype) }">
               <xsd:annotation>
                   <xsd:appinfo source="http://www.ogf.org/dfdl/dfdl-1.0/">
                       <dfdl:assert test="{ dfdl:checkConstraints(.) }"
                           message="The subtype must match one of the values on the enumerated list."/>
                   </xsd:appinfo>
               </xsd:annotation>
               <xsd:simpleType>
                   <xsd:restriction base="xsd:string">
                       <xsd:enumeration value="pdf"/>
                       <xsd:enumeration value="ms-tnef"/> <!-- outlook -->
                       <xsd:enumeration value="alternative"/>
                       <xsd:enumeration value="mixed"/>
                       <xsd:enumeration value="rfc822"/>
                       <xsd:enumeration value="plain"/>
                       <xsd:enumeration value="html"/>
                   </xsd:restriction>
               </xsd:simpleType>
           </xsd:element>
       </xsd:sequence>
   </xsd:complexType>

   <!-- physical representation of the type and subtype, which can contain upper and lowercase characters -->
   <xsd:group name="MixedCaseMimeTypeGroup">
       <xsd:sequence dfdl:separator="/">
           <xsd:element name="MixedCaseType" type="xsd:string"/>
           <xsd:element name="MixedCaseSubtype" type="xsd:string"/>
       </xsd:sequence>
   </xsd:group>--
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