in reply to How to generate XML file from XSDs ?

Are you sure your schema itself is valid? Please post the entire schema, the fragment is not sufficient, i.e. I assume you define a "yes-or-no" type somewhere in the schema. Like brother Cody Pendant already stated you use the wrong attribute name.

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Re^2: How to generate XML file from XSDs ?
by matrixmadhan (Beadle) on Nov 13, 2008 at 10:48 UTC
    Thanks again for the reply

    Much appreciated !

    I have taken another simple XSD and XML file for sample to avoid confusions that I have might have made

    Here it is,

    XSD 

    <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
            targetNamespace="urn:books"
            xmlns:bks="urn:books">

  <xsd:element name="books" type="bks:BooksForm"/>

  <xsd:complexType name="BooksForm">
    <xsd:sequence>
      <xsd:element name="book" 
                  type="bks:BookForm" 
                  minOccurs="0" 
                  maxOccurs="unbounded"/>
      </xsd:sequence>
  </xsd:complexType>

  <xsd:complexType name="BookForm">
    <xsd:sequence>
      <xsd:element name="author"   type="xsd:string"/>
      <xsd:element name="title"    type="xsd:string"/>
      <xsd:element name="genre"    type="xsd:string"/>
      <xsd:element name="price"    type="xsd:float" />
      <xsd:element name="pub_date" type="xsd:date" />
      <xsd:element name="review"   type="xsd:string"/>
    </xsd:sequence>
    <xsd:attribute name="id"   type="xsd:string"/>
  </xsd:complexType>
</xsd:schema>

    [download]
    XML file 

    <?xml version="1.0"?>
<x:books xmlns:x="urn:books">
   <book id="bk001">
      <author>Writer</author>
      <title>The First Book</title>
      <genre>Fiction</genre>
      <price>44.95</price>
      <pub_date>2000-10-01</pub_date>
      <review>An amazing story of nothing.</review>
   </book>

   <book id="bk002">
      <author>Poet</author>
      <title>The Poet's First Poem</title>
      <genre>Poem</genre>
      <price>24.95</price>
      <review>Least poetic poems.</review>
   </book>
</x:books>

    [download]
    With this, how to generate a XML file with XSD. The reason behind the question is, I have a perl datastructure and with that I need to generate XML file that validates the XSD.
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      I know of no Perl module that generates an XML document based on an input XSD. There are tools available that do it however (Google;-). I myself use XMLSpy for that. See below for an example generated with XMLSpy (runs under Windows only). Look for oXygen for a platform independent solution, it's cheap and good and has an "XML Instance Generator" too.

      <?xml version="1.0" encoding="UTF-8"?>
<!--Sample XML file generated by XMLSPY v2004 rel. 4 U (http://www.xml
+spy.com)-->
<bks:books xmlns:bks="urn:books" xmlns:xsi="http://www.w3.org/2001/XML
+Schema-instance"
      xsi:schemaLocation="urn:books
      theSchema.xsd">
<book id="String">
    <author>String</author>
    <title>String</title>
    <genre>String</genre>
    <price>3.14159</price>
    <pub_date>1967-08-13</pub_date>
    <review>String</review>
</book>
</bks:books>

      [download]

      The XML file you give is not valid by the way. Error message: "Mandatory ‘pub_date’ element expected in place of ‘review’."

      There are many Perl modules to work with XML. With some effort you can write a Perl script that generates a valid XML file out of an XSD.

      HTH

      UPDATE
      Some XIGs (XML Instance Generators):

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