I think you are talking in part about "XML Schema Inference", that is generating an XSD schema from an existing instance of XML. As far as I know there is no module on CPAN that provides this facility (though I would be delighted to be proved wrong.) The basic problem of schema inference (or extraction if you would rather) is described in this paper.

Personally if I need to generate a schema from an existing XML document I use the xsd.exe that is part of the .NET framework, this is also available for mono if you are not on Windows and the mono implementation is described here.

As for validating an instance against an existing schema, you have a choice - you can use XML::Validator::Schema or the facilities in XML::LibXML among others that you will have seen when you performed the search on CPAN as davorg suggested.

/J\

In reply to Re: How to use xml schema in perl by gellyfish
in thread How to use xml schema in perl by antovinraj

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.