If an element is empty, it has no text() child nodes, so you can't call any methods on any of them. But even if it had, you don't want to remove the child nodes of the text(), but the child nodes of their parent, i.e. the otherTitle.
Note how the following script is SSCCE (which your question wasn't, which made it harder for us to help you):
#!/usr/bin/perl
use warnings;
use strict;
use feature qw{ say };
use XML::LibXML;
for my $other_title (
'<alt-title origin="tilte"><otherTitle/></alt-title>',
'<alt-title origin="tilte"><otherTitle>old value</otherTitle></alt
+-title>',
) {
my $xml = qq(
<file>
<body>
<group>
<unit id="3Ojs1SLwMmEHK8mJ0_dc2:43">
$other_title
</unit>
</group>
</body>
</file>
);
my $dom = 'XML::LibXML'->load_xml(string => $xml);
my ($other_title) = $dom->findnodes('//file/body/group/unit/alt-ti
+tle/otherTitle');
if ($other_title->findnodes('text()')) {
$other_title->removeChildNodes;
}
$other_title->appendText('new value');
print $dom;
}
($q=q:Sq=~/;[c](.)(.)/;chr(-||-|5+lengthSq)`"S|oS2"`map{chr |+ord
}map{substrSq`S_+|`|}3E|-|`7**2-3:)=~y+S|`+$1,++print+eval$q,q,a,
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.
|