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NAMEXML::Schematron::XPath - Perl extension for validating XML with XPath expressions. SYNOPSISuse XML::Schematron my $pseudotron = XML::Schematron->new_with_traits( traits => ['XPath'], schema => 'my_schema.xml' ); # optionally, add some addition tests from perl-space $pseudotron->add_tests( @some_tests ); my $messages = $pseudotron->verify('my_file.xml'); if ($messages) { # we got warnings or errors during validation... ... } OR, in an array context my @messages = $pseudotron->verify('my_file.xml'); DESCRIPTIONXML::Schematron::XPath serves as a simple validator for XML based on Rick JELLIFFE's Schematron XSLT script. A Schematron schema defines a set of rules in the XPath language that are used to examine the contents of an XML document tree. A simplified example: <?xml version="1.0"?> <schema> <pattern> <rule context="page"> <assert test="count(*)=count(title|body)">The page element may only contain title or body elements.</assert> <assert test="@name">A page element must contain a name attribute.</assert> <report test="string-length(@name) < 5">A page element name attribute must be at least 5 characters long.</report> </rule> </pattern> </schema> Note that an 'assert' rule will return if the result of the test expression is not true, while a 'report' rule will return only if the test expression evalutes to true. METHODS
CONFORMANCEXML::Schematron::XPath does not conform to the current Schematron specification since more modern versions allow XSLT-specific expressions to be used as tests. Please note, however, that robust validation is still quite possible using just the XPath language. AUTHORKip Hampton, khampton@totalcinema.com COPYRIGHTCopyright (c) 2000-2010 Kip Hampton. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. SEE ALSOFor information about Schematron, sample schemas, and tutorials to help you write your own schmemas, please visit the Schematron homepage at: <https://www.schematron.com/> For detailed information about the XPath syntax, please see the W3C XPath Specification at: <http://www.w3.org/TR/xpath.html>
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