[Chicago-talk] Navigating an XSD

[Jay Strauss]

Hi,

I have an XSD document like below.  I've been googling and cpan-ing, but
can't find what I need (i know there are lots of XML packages), and I don't
know how to parse it using regexs (reliably).  I just want to read in this
XSD and navigate it like a perl structure, and extract field values like:

Field:ABS.1
Item:1514
Type:XCN
Table:HL70010
LongName:Discharge Care Provider

Field:ABS.2
...


Can anyone recommend a module or a method?

Thanks
Jay


<?xml version ="1.0" encoding="UTF-8"?>
<!--
    v2.xml Message Definitions Version v2.5.1  - fields
    HL7® Version 2.5.1, © Health Level Seven, Inc.  All rights reserved.
HL7 and Health Level Seven are registered trademarks of Health Level Seven,
Inc.
-->
<xsd:schema
    xmlns:xsd="http://www.w3.org/2001/XMLSchema"
    xmlns="urn:hl7-org:v2xml"
    xmlns:hl7="urn:com.sun:encoder-hl7-1.0"
    targetNamespace="urn:hl7-org:v2xml" xmlns:jaxb="
http://java.sun.com/xml/ns/jaxb" jaxb:version="2.0">

    <!-- include datatypes definitions for version v2.5.1 -->
    <xsd:include schemaLocation="datatypes.xsd"/>

    <xsd:annotation>
        <xsd:appinfo source="urn:com.sun:encoder">
            <encoding xmlns="urn:com.sun:encoder" name="HL7 v2 Encoding"
namespace="urn:com.sun:encoder-hl7-1.0" style="hl7encoder-1.0"/>
        </xsd:appinfo>
    </xsd:annotation>

    <!--
        FIELD ABS.1
    -->
    <xsd:attributeGroup name="ABS.1.ATTRIBUTES">
        <xsd:attribute name="Item" type="xsd:string" fixed="1514"/>
        <xsd:attribute name="Type" type="xsd:string" fixed="XCN"/>
        <xsd:attribute name="Table" type="xsd:string" fixed="HL70010"/>
        <xsd:attribute name="LongName" type="xsd:string" fixed="Discharge
Care Provider"/>
    </xsd:attributeGroup>
    <xsd:complexType name="ABS.1.CONTENT">
        <xsd:annotation>
            <xsd:documentation xml:lang="en">Discharge Care
Provider</xsd:documentation>
            <xsd:appinfo source="urn:com.sun:encoder">
                <hl7:Item>1514</hl7:Item>
                <hl7:Type>XCN</hl7:Type>
                <hl7:Table>HL70010</hl7:Table>
                <hl7:LongName>Discharge Care Provider</hl7:LongName>
            </xsd:appinfo>
        </xsd:annotation>
        <xsd:complexContent>
            <xsd:extension base="XCN">
                <xsd:attributeGroup ref="ABS.1.ATTRIBUTES"/>
            </xsd:extension>
        </xsd:complexContent>
    </xsd:complexType>
    <xsd:element name="ABS.1" type="ABS.1.CONTENT"/>
    <!--
        FIELD ABS.2
    -->
    <xsd:attributeGroup name="ABS.2.ATTRIBUTES">
        <xsd:attribute name="Item" type="xsd:string" fixed="1515"/>
        <xsd:attribute name="Type" type="xsd:string" fixed="CE"/>
        <xsd:attribute name="Table" type="xsd:string" fixed="HL70069"/>
        <xsd:attribute name="LongName" type="xsd:string" fixed="Transfer
Medical Service Code"/>
    </xsd:attributeGroup>
    <xsd:complexType name="ABS.2.CONTENT">
        <xsd:annotation>
            <xsd:documentation xml:lang="en">Transfer Medical Service
Code</xsd:documentation>
            <xsd:appinfo source="urn:com.sun:encoder">
                <hl7:Item>1515</hl7:Item>
                <hl7:Type>CE</hl7:Type>
                <hl7:Table>HL70069</hl7:Table>
                <hl7:LongName>Transfer Medical Service Code</hl7:LongName>
            </xsd:appinfo>
        </xsd:annotation>
        <xsd:complexContent>
            <xsd:extension base="CE">
                <xsd:attributeGroup ref="ABS.2.ATTRIBUTES"/>
            </xsd:extension>
        </xsd:complexContent>
    </xsd:complexType>
    <xsd:element name="ABS.2" type="ABS.2.CONTENT"/>
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