1XML::LibXML::XPathExpreUssseironC(o3n)tributed Perl DocuXmMeLn:t:aLtiiboXnML::XPathExpression(3)
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NAME

6       XML::LibXML::XPathExpression - XML::LibXML::XPathExpression - interface
7       to libxml2 pre-compiled XPath expressions
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SYNOPSIS

10         use XML::LibXML;
11         my $compiled_xpath = XML::LibXML::XPathExpression->new('//foo[@bar="baz"][position()<4]');
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13         # interface from XML::LibXML::Node
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15         my $result = $node->find($compiled_xpath);
16         my @nodes = $node->findnodes($compiled_xpath);
17         my $value = $node->findvalue($compiled_xpath);
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19         # interface from XML::LibXML::XPathContext
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21         my $result = $xpc->find($compiled_xpath,$node);
22         my @nodes = $xpc->findnodes($compiled_xpath,$node);
23         my $value = $xpc->findvalue($compiled_xpath,$node);
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25         $compiled = XML::LibXML::XPathExpression->new( xpath_string );
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DESCRIPTION

28       This is a perl interface to libxml2's pre-compiled XPath expressions.
29       Pre-compiling an XPath expression can give in some performance benefit
30       if the same XPath query is evaluated many times.
31       "XML::LibXML::XPathExpression" objects can be passed to all "find..."
32       functions "XML::LibXML" that expect an XPath expression.
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34       new()
35             $compiled = XML::LibXML::XPathExpression->new( xpath_string );
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37           The constructor takes an XPath 1.0 expression as a string and
38           returns an object representing the pre-compiled expressions (the
39           actual data structure is internal to libxml2).
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AUTHORS

42       Matt Sergeant, Christian Glahn, Petr Pajas
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VERSION

45       2.0205
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48       2001-2007, AxKit.com Ltd.
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50       2002-2006, Christian Glahn.
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52       2006-2009, Petr Pajas.
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LICENSE

55       This program is free software; you can redistribute it and/or modify it
56       under the same terms as Perl itself.
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60perl v5.32.0                      2020-07-28   XML::LibXML::XPathExpression(3)
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