Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

XML::LibXML and Xpath syntax How do I get attribute of sibling

Posted on 2016-08-15
2
Medium Priority
?
222 Views
Last Modified: 2016-08-21
This is follow on fromThis Question

In the xml bellow I need to locate the next 'link' after I've located 'images' within the parent 'entry'


I found this link that suggest can use "following-sibling" can someone see what I've  done wrong?  

note I've striped the xml down to simplify

Perl script
 
!C:\strawberry\perl\bin\perl.exe

use strict;
use warnings;
use XML::LibXML;
use XML::LibXML::XPathContext;
use Data::Dump qw(dump);


my $filename = 'georss.xml';

my $dom = XML::LibXML->load_xml(location => $filename);
my $xpc = XML::LibXML::XPathContext->new($dom);
$xpc->registerNs(dft => "http://www.w3.org/2005/Atom");
$xpc->registerNs(georss => "http://www.georss.org/georss");


foreach my $Entry ($xpc->findnodes("//dft:feed/dft:entry")) {

     foreach my $Images ($xpc->findnodes("/dft:title[not(\@type='text')]", $Entry)) {
         my $ImageVal = $Images->textContent;

          ####  This finds all the Images
         print "ImageVal $ImageVal\n";
         my $link = $Images->following-sibling::link[\@href];
         print "link $link\n";
         
     }

}

Open in new window


georss.xml
<?xml version="1.0" encoding="utf-8"?>
<feed xmlns="http://www.w3.org/2005/Atom" xmlns:georss="http://www.georss.org/georss" xmlns:gml="http://www.opengis.net/gml" >
  <entry>
    <title>fileName1.jpg</title>
     <link href="PathTo/fileName1.jpg" />
  </entry>
  <entry>
    <title>fileName2.jpg</title>
     <link href="PathTo/fileName2.jpg" />
  </entry>
  <entry>
    <title>fileName3.jpg</title>
     <link href="PathTo/fileName3.jpg" />
  </entry>
  <entry>
    <title type="text">fileName.pdf</title>
     <link type="application/pdf"  href="PathTo/fileName.pdf" />
  </entry>
    <georss:where>
     <point xmlns="http://www.opengis.net/gml" srsName="urn:ogc:crs:EPSG:4326">
      <pos>45.256 -71.92</pos>
     </point>
  </georss:where>

</feed>

Open in new window

0
Comment
Question by:trevor1940
2 Comments
 
LVL 35

Accepted Solution

by:
Robert Schutt earned 2000 total points
ID: 41763918
Try it like this:
foreach my $Entry ($xpc->findnodes("//dft:feed/dft:entry")) {

     foreach my $Images ($xpc->findnodes("./dft:title[not(\@type='text')]", $Entry)) {
         my $ImageVal = $Images->textContent;

          ####  This finds all the Images
         print "ImageVal $ImageVal\n";
         my $link = $xpc->findvalue('following-sibling::dft:link[1]/@href', $Images);
         print "link $link\n";
         
     }

}

Open in new window

0
 
LVL 1

Author Closing Comment

by:trevor1940
ID: 41764348
That worked thank you
0

Featured Post

What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

The Windows functions GetTickCount and timeGetTime retrieve the number of milliseconds since the system was started. However, the value is stored in a DWORD, which means that it wraps around to zero every 49.7 days. This article shows how to solve t…
In the first part of this tutorial we will cover the prerequisites for installing SQL Server vNext on Linux.
This demo shows you how to set up the containerized NetScaler CPX with NetScaler Management and Analytics System in a non-routable Mesos/Marathon environment for use with Micro-Services applications.
Six Sigma Control Plans
Suggested Courses
Course of the Month9 days, 13 hours left to enroll

926 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question