Overview: Hiererchical Data Sources are used to represent data from a XML file or a Web Service call.

 

The following XML and schema will be described in a processing job as a tree of hierarchical data sources:

 

XML:

<?xml version="1.0" encoding="utf-8"?>

<books>

<book id="1">

  <title>Lord Of the Rings.</title>

  <info>

        <country>United Kingdom</country>

          <author>J. R. R. Tolkien</author>

  </info>

</book>

<book id="2">

  <title>Principia Mathematica</title>

  <info>

        <country>U.S.A</country>

       <author>Bertrand Russell</author>

       <author>Alfred North Whitehead</author>

  </info>

</book>

<book id="3">

  <title>Black Holes, White Dwarfs and Neutron Stars: The Physics of Compact Objects</title>

  <info>

        <country>U.S.A</country>

       <author>Stuart L. Shapiro</author>

       <author>Saul A. Teukolsky</author>

  </info>

</book>

</books>

 

 

XML Schema:

 

<?xml version="1.0" encoding="utf-8"?>

<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">

<xs:element name="books">

  <xs:complexType>

    <xs:sequence>

      <xs:element maxOccurs="unbounded" name="book">

        <xs:complexType>

          <xs:sequence>

            <xs:element name="title" type="xs:string" minOccurs="1" maxOccurs="1" />

            <xs:element name="info" minOccurs="1" maxOccurs="1">

              <xs:complexType>

                <xs:sequence>

                  <xs:element name="country" type="xs:string" minOccurs="1" maxOccurs="1"/>

                  <xs:element name="author" type="xs:string" minOccurs="1" maxOccurs="1"/>

                </xs:sequence>

              </xs:complexType>

            </xs:element>

          </xs:sequence>

          <xs:attribute name="id" type="xs:unsignedByte" use="required" />

        </xs:complexType>

      </xs:element>

    </xs:sequence>

  </xs:complexType>

</xs:element>

</xs:schema>

 

 

This is what the hierarchical data source tree generated from the XML above will look like: