Xerces (Perl) : Validate subset of schema and ignore other tags ?

[Abhinav Modi <ab...@gmail.com>]

Hi,

I have an xml which contains the following

<a>
    <aaa>
    </aaa>
    <!-- aa Is what I am interested in -->
    <aa>
    </aa>

    <bb></bb>
    <cc></cc>

</a>

Here, my application requires that <a> (The root element) *must* contain
<aa> tag.

However, tags such as <aaa>, <bb>, <cc>, or anything else might exist - 
they are
optional, and I do not know which of them (if at all) will be present.

How do I write the schema for it ?

Using all requires that I know which tags might appear ..

Using any doesnt allow me to check the presence of the specific tag <aa>

Also, this does not work : 

<?xml version="1.0" encoding="windows-1252"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
            xmlns="http://www.example.org"
            targetNamespace="http://www.example.org"
            elementFormDefault="qualified" >

  <xsd:element name="a" type="aa-type">
    <xsd:annotation>
      <xsd:documentation>A sample element</xsd:documentation>
    </xsd:annotation>
  </xsd:element>
  <xsd:complexType name="aa-type">
    <xsd:sequence>
      <xsd:any minOccurs="0" maxOccurs="unbounded" 
namespace="http://www.example.org" processContents="skip"/>
      <xsd:element name="aa"/>
      <xsd:any minOccurs="0" maxOccurs="unbounded" 
namespace="http://www.example.org" processContents="skip"/>
    </xsd:sequence>
  </xsd:complexType>

</xsd:schema>

It fails with : 
MESSAGE: Not enough elements to match content model : '((,aa),)'

Any pointers on how to achieve this ?

TIA

--
-- 
-------------
http://www.abhinavmodi.tk

---------------------------------------------------------------------
To unsubscribe, e-mail: xerces-p-dev-unsubscribe@xml.apache.org
For additional commands, e-mail: xerces-p-dev-help@xml.apache.org