From: Peter Fitzgibbons <peter.fitzgibbons@...>
Date: 2006-10-03T06:01:21+09:00
Subject: libxml 0.3.8 - How to validate document with schema ?

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Hello all (Ross),

I'm trying to get libxml to validate an XML::Document using #validate with
an XML::Schema.

Can one of you describe to me what is wrong ?

I have this, with the examples pasted at the end of this post.  This is from
the W3Schools example at :
http://www.w3schools.com/schema/schema_example.asp

$ irb
irb(main):001:0> require 'rubygems'
=> true
irb(main):002:0> require 'xml/libxml'
=> true
irb(main):003:0> xml = XML::Document.new('shiporder.xml')
=> <?xml version="shiporder.xml"?>

irb(main):004:0> sch = XML::Schema.from_string(File.open('shiporder.xsd
').read)
=> #<XML::Schema:0x365c54>
irb(main):005:0> xml.validate sch
error -- found validity error: no root element
=> false
irb(main):006:0>


============ shiporder.xml ===============
<?xml version="1.0" encoding="ISO-8859-1"?>

<shiporder orderid="889923"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="shiporder.xsd">
 <orderperson>John Smith</orderperson>
 <shipto>
  <name>Ola Nordmann</name>
  <address>Langgt 23</address>
  <city>4000 Stavanger</city>
  <country>Norway</country>
 </shipto>
 <item>
  <title>Empire Burlesque</title>
  <note>Special Edition</note>
  <quantity>1</quantity>
  <price>10.90</price>
 </item>
 <item>
  <title>Hide your heart</title>
  <quantity>1</quantity>
  <price>9.90</price>
 </item>
</shiporder>
============ shiporder.xml ===============

============ shiporder.xsd ===============
<?xml version="1.0" encoding="ISO-8859-1" ?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">

<xs:simpleType name="stringtype">
 <xs:restriction base="xs:string"/>
</xs:simpleType>

<xs:simpleType name="inttype">
 <xs:restriction base="xs:positiveInteger"/>
</xs:simpleType>

<xs:simpleType name="dectype">
 <xs:restriction base="xs:decimal"/>
</xs:simpleType>

<xs:simpleType name="orderidtype">
 <xs:restriction base="xs:string">
  <xs:pattern value="[0-9]{6}"/>
 </xs:restriction>
</xs:simpleType>

<xs:complexType name="shiptotype">
 <xs:sequence>
  <xs:element name="name" type="stringtype"/>
  <xs:element name="address" type="stringtype"/>
  <xs:element name="city" type="stringtype"/>
  <xs:element name="country" type="stringtype"/>
 </xs:sequence>
</xs:complexType>

<xs:complexType name="itemtype">
 <xs:sequence>
  <xs:element name="title" type="stringtype"/>
  <xs:element name="note" type="stringtype" minOccurs="0"/>
  <xs:element name="quantity" type="inttype"/>
  <xs:element name="price" type="dectype"/>
 </xs:sequence>
</xs:complexType>

<xs:complexType name="shipordertype">
 <xs:sequence>
  <xs:element name="orderperson" type="stringtype"/>
  <xs:element name="shipto" type="shiptotype"/>
  <xs:element name="item" maxOccurs="unbounded" type="itemtype"/>
 </xs:sequence>
 <xs:attribute name="orderid" type="orderidtype" use="required"/>
</xs:complexType>

<xs:element name="shiporder" type="shipordertype"/>

</xs:schema>
============ shiporder.xsd ===============

-- 
------------------------------
Apple MacBook.  Black.  It's the new White!
------------------------------
Peter Fitzgibbons

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