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.\" ========================================================================
.\"
.IX Title "XML::LibXML::Schema 3pm"
.TH XML::LibXML::Schema 3pm "2022-10-19" "perl v5.36.0" "User Contributed Perl Documentation"
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.SH "NAME"
XML::LibXML::Schema \- XML Schema Validation
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 2
\&  use XML::LibXML;
\&  $doc = XML::LibXML\->new\->parse_file($url);
\&
\&  $xmlschema = XML::LibXML::Schema\->new( location => $filename_or_url );
\&  $xmlschema = XML::LibXML::Schema\->new( string => $xmlschemastring );
\&  eval { $xmlschema\->validate( $doc ); };
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
The XML::LibXML::Schema class is a tiny frontend to libxml2's \s-1XML\s0 Schema
implementation. Currently it supports only schema parsing and document
validation. As of 2.6.32, libxml2 only supports decimal types up to 24 digits
(the standard requires at least 18).
.SH "METHODS"
.IX Header "METHODS"
.IP "new" 4
.IX Item "new"
.Vb 2
\&  $xmlschema = XML::LibXML::Schema\->new( location => $filename_or_url );
\&  $xmlschema = XML::LibXML::Schema\->new( string => $xmlschemastring );
.Ve
.Sp
The constructor of XML::LibXML::Schema may get called with either one of two
parameters. The parameter tells the class from which source it should generate
a validation schema. It is important, that each schema only have a single
source.
.Sp
The location parameter allows one to parse a schema from the filesystem or a
\&\s-1URL.\s0
.Sp
The string parameter will parse the schema from the given \s-1XML\s0 string.
.Sp
Note that the constructor will \fBdie()\fR if the schema does not meed the
constraints of the \s-1XML\s0 Schema specification.
.IP "validate" 4
.IX Item "validate"
.Vb 1
\&  eval { $xmlschema\->validate( $doc ); };
.Ve
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This function allows one to validate a (parsed) document against the given \s-1XML\s0
Schema. The argument of this function should be a XML::LibXML::Document object. If this function succeeds, it will return 0, otherwise it will \fBdie()\fR
and report the errors found. Because of this \fBvalidate()\fR should be always
evaluated.
.SH "AUTHORS"
.IX Header "AUTHORS"
Matt Sergeant,
Christian Glahn,
Petr Pajas
.SH "VERSION"
.IX Header "VERSION"
2.0134
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
2001\-2007, AxKit.com Ltd.
.PP
2002\-2006, Christian Glahn.
.PP
2006\-2009, Petr Pajas.
.SH "LICENSE"
.IX Header "LICENSE"
This program is free software; you can redistribute it and/or modify it under
the same terms as Perl itself.