How get a node whose title is separated by a colon?

[thechinkysight]

I have little to no experience with xml so it's a little bit confusing for me to get working with it. My question is that I have a xml like this:

<?xml version="1.0" encoding="UTF-8"?>
<feed xmlns:dcterms="http://purl.org/dc/terms/" xmlns:thr="http://purl.org/syndication/thread/1.0" xmlns:app="http://www.w3.org/2007/app" xmlns:opensearch="http://a9.com/-/spec/opensearch/1.1/" xmlns="http://www.w3.org/2005/Atom" xmlns:opds="http://opds-spec.org/2010/catalog" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="en" xmlns:odl="http://opds-spec.org/odl" xmlns:schema="http://schema.org">
  <id>https://catalog.feedbooks.com/publicdomain/browse/homepage_selection.atom</id>
  <title>New &amp; noteworthy</title>
  <updated>2021-02-03T10:44:23Z</updated>
  <icon>/favicon.ico</icon>
  <author>
    <name>Feedbooks</name>
    <uri>http://www.feedbooks.com</uri>
    <email>help@demarque.com</email>
  </author>
  <link rel="self" type="application/atom+xml;profile=opds-catalog;kind=acquisition; charset=utf-8" href="https://catalog.feedbooks.com/publicdomain/browse/homepage_selection.atom"/>
  <link rel="start" type="application/atom+xml;profile=opds-catalog;kind=navigation" title="Home" href="https://catalog.feedbooks.com/catalog/index.atom"/>
  <link rel="search" href="https://catalog.feedbooks.com/opensearch.xml" type="application/opensearchdescription+xml" title="Search on Feedbooks"/>
  <link rel="http://opds-spec.org/shelf" type="application/atom+xml;profile=opds-catalog;kind=acquisition" title="Bookshelf" href="https://www.feedbooks.com/user/bookshelf.atom"/>
<opensearch:totalResults>0</opensearch:totalResults>
<opensearch:itemsPerPage>50</opensearch:itemsPerPage>
<opensearch:startIndex>1</opensearch:startIndex>
</feed>

from which I need to get the values of :

<opensearch:totalResults>0</opensearch:totalResults>
<opensearch:itemsPerPage>50</opensearch:itemsPerPage>
<opensearch:startIndex>1</opensearch:startIndex>

I tried doing like this:

XmlElement totalResult = parsedXml.getElement('opensearch:totalResults');

String totalResultInString = totalResult.text; 

But the totalResult was null, so I am here to seek help 🙏

[renggli]

I guess parsedXml is the XmlDocument? If so, the elements of this node are the <?xml ... and <feed xmlns ... nodes, which obviously do not match the element name you are searching for. Use parsedXml.rootElement to get the root element of your DOM tree (<feed xmlns ...); then you can ask that one for the values you're after:

XmlElement totalResult = parsedXml.rootElement.getElement('opensearch:totalResults');

[thechinkysight]

@renggli Thank you that worked :)