Header Ads Widget

[MAN] XML::LibXML::XPathExpression

Content-type: text/html; charset=UTF-8 Man page of XML::LibXML::XPathExpression

XML::LibXML::XPathExpression

Section: User Contributed Perl Documentation (3pm)
Updated: 2017-11-10
Index Return to Main Contents
 

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

2.0128  

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.


 

Index

NAME
SYNOPSIS
DESCRIPTION
AUTHORS
VERSION
COPYRIGHT
LICENSE

This document was created by man2html, using the manual pages.
Time: 04:45:41 GMT, September 16, 2022

댓글 쓰기

0 댓글