73 lines
1.6 KiB
Plaintext
73 lines
1.6 KiB
Plaintext
=head1 NAME
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XML::LibXML::XPathExpression - XML::LibXML::XPathExpression - interface to libxml2 pre-compiled XPath expressions
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=head1 SYNOPSIS
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use XML::LibXML;
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my $compiled_xpath = XML::LibXML::XPathExpression->new('//foo[@bar="baz"][position()<4]');
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# interface from XML::LibXML::Node
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my $result = $node->find($compiled_xpath);
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my @nodes = $node->findnodes($compiled_xpath);
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my $value = $node->findvalue($compiled_xpath);
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# interface from XML::LibXML::XPathContext
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my $result = $xpc->find($compiled_xpath,$node);
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my @nodes = $xpc->findnodes($compiled_xpath,$node);
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my $value = $xpc->findvalue($compiled_xpath,$node);
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$compiled = XML::LibXML::XPathExpression->new( xpath_string );
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=head1 DESCRIPTION
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This is a perl interface to libxml2's pre-compiled XPath expressions.
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Pre-compiling an XPath expression can give in some performance benefit if the
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same XPath query is evaluated many times. C<<<<<< XML::LibXML::XPathExpression >>>>>> objects can be passed to all C<<<<<< find... >>>>>> functions C<<<<<< XML::LibXML >>>>>> that expect an XPath expression.
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=over 4
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=item new()
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$compiled = XML::LibXML::XPathExpression->new( xpath_string );
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The constructor takes an XPath 1.0 expression as a string and returns an object
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representing the pre-compiled expressions (the actual data structure is
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internal to libxml2).
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=back
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=head1 AUTHORS
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Matt Sergeant,
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Christian Glahn,
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Petr Pajas
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=head1 VERSION
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2.0134
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=head1 COPYRIGHT
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2001-2007, AxKit.com Ltd.
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2002-2006, Christian Glahn.
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2006-2009, Petr Pajas.
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=cut
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=head1 LICENSE
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This program is free software; you can redistribute it and/or modify it under
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the same terms as Perl itself.
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