Update of /cvsroot/perl-xml/perl-xml-faq
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv4540
Modified Files:
perl-xml-faq.xml
Log Message:
- integrate tip from Dan Horne re schema validation using XML::LibXML
Index: perl-xml-faq.xml
===================================================================
RCS file: /cvsroot/perl-xml/perl-xml-faq/perl-xml-faq.xml,v
retrieving revision 1.20
retrieving revision 1.21
diff -u -d -r1.20 -r1.21
--- perl-xml-faq.xml 11 Feb 2005 08:06:16 -0000 1.20
+++ perl-xml-faq.xml 2 Nov 2005 09:03:03 -0000 1.21
@@ -1829,6 +1829,48 @@
</answer>
</qandaentry>
+ <qandaentry id="validation_libxml_xsd">
+ <question>
+ <para>W3C Schema Validation With <classname>XML::LibXML</classname></para>
+ </question>
+ <answer>
+
+ <para><classname>XML::LibXML</classname> provides undocumented support
+ for validating against a W3C schema. Here's an example of how you might
+ use it (contributed by Dan Horne):</para>
+
+ <programlisting><![CDATA[
+use XML::LibXML;
+
+my $schema_file = 'po.xsd';
+my $document = 'po.xml';
+
+my $schema = XML::LibXML::Schema->new(location => $schema_file);
+
+my $parser = XML::LibXML->new;
+my $doc = $parser->parse_file($document);
+
+eval { $schema->validate($doc) };
+die $@ if $@;
+
+print "$document validated successfully\n";
+ ]]></programlisting>
+
+ <para>The referenced XSD schema file and sample XML document can be
+ downloaded from the <ulink url="http://www.w3.org/TR/xmlschema-0/">W3C
+ Schema Primer</ulink>.</para>
+
+ <para>The xmllint command line validator included in the libxml2
+ distribution can also do W3C schema validation. You can use it like
+ this:</para>
+
+ <programlisting><![CDATA[
+xmllint --noout --schema po.xsd po.xml
+ ]]></programlisting>
+
+ </answer>
+ </qandaentry>
+
<qandaentry id="validation_xerces">
<question>
<para>W3C Schema Validation With <classname>XML::Xerces</classname></para>
@@ -1852,7 +1894,24 @@
<para>Sam Tregar's <classname>XML::Validator::Schema</classname> allows
you to validate XML documents against a W3C XML Schema. It does not
implement the full W3C XML Schema recommendation, but a useful
- subset.</para>
+ subset. Here's an example:</para>
+
+ <programlisting><![CDATA[
+use XML::SAX::ParserFactory;
+use XML::Validator::Schema;
+
+my $schema_file = 'po.xsd';
+my $document = 'po.xml';
+
+my $validator = XML::Validator::Schema->new(file => $schema_file);
+
+my $parser = XML::SAX::ParserFactory->parser(Handler => $validator);
+
+eval { $parser->parse_uri($document); };
+die $@ if $@;
+
+print "$document validated successfully\n";
+ ]]></programlisting>
</answer>
</qandaentry>
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