XML::LibXML::XPathExprUseroContributed Perl DXML::LibXML::XPathExpression(3pm)
NAME
XML::LibXML::XPathExpression - XML::LibXML::XPathExpression - interface
to libxml2 pre-compiled XPath expressions
SYNOPSIS
use XML::LibXML;
my $compiled_xpath = XML::LibXML::XPathExpression->new('//foo[@bar="baz"][position()<4]');
# interface from XML::LibXML::Node
my $result = $node->find($compiled_xpath);
my @nodes = $node->findnodes($compiled_xpath);
my $value = $node->findvalue($compiled_xpath);
# interface from XML::LibXML::XPathContext
my $result = $xpc->find($compiled_xpath,$node);
my @nodes = $xpc->findnodes($compiled_xpath,$node);
my $value = $xpc->findvalue($compiled_xpath,$node);
$compiled = XML::LibXML::XPathExpression->new( xpath_string );
DESCRIPTION
This is a perl interface to libxml2's pre-compiled XPath expressions.
Pre-compiling an XPath expression can give in some performance benefit
if the same XPath query is evaluated many times.
"XML::LibXML::XPathExpression" objects can be passed to all "find..."
functions "XML::LibXML" that expect an XPath expression.
new()
$compiled = XML::LibXML::XPathExpression->new( xpath_string );
The constructor takes an XPath 1.0 expression as a string and
returns an object representing the pre-compiled expressions (the
actual data structure is internal to libxml2).
AUTHORS
Matt Sergeant, Christian Glahn, Petr Pajas
VERSION
2.0134
COPYRIGHT
2001-2007, AxKit.com Ltd.
2002-2006, Christian Glahn.
2006-2009, Petr Pajas.
LICENSE
This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
perl v5.36.0 2022-10-19 XML::LibXML::XPathExpression(3pm)
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