I am trying to get value of an element if it contains a part of the search string in XPath.

use XML::LibXML;

my $parser = XML::LibXML->new();
my $doc = $parser->parse_file("type_book.xml");

for my $chapter_node ($doc->findnodes('/book/contents'))
{
    print $chapter_node->findvalue('locator[@href ="/book/isbn/979-0-4
+444-1000-17/book-part/chapter/bk444444ch1?releaseStatus=RELEASED"]/@t
+itle');    
}
[download]

I want replace the replace the XPath in print statement as below:

print $chapter_node->findvalue('locator[@href ="/*releaseStatus=RELEAS
+ED"]/@title');    
}
[download]

So that I will always get the value of title where the href tag contains "releaseStatus=RELEASED" only. The XML file is as follows:

<book>
<contents>
<locator href="/book/isbn/979-0-4444-1000-17/book-part/chapter/bk44444
+4ch1?releaseStatus=RELEASED" role="http://www.iop.org/roles/book-part
+-locator" title="Photonic crystal light-emitting sources">
</locator>  
<locator href="/book/isbn/979-0-4444-1000-17/book-part/chapter/bk44444
+4ch1?releaseStatus=RELEASED&amp;format=pdf" role="http://www.iop.org/
+roles/book-part-pdf-locator" title="Photonic crystal light-emitting s
+ources">
</locator>  
<locator href="/book/isbn/979-0-4444-1000-17/book-part/chapter/bk44444
+4ch1?releaseStatus=RELEASED&amp;format=epub" role="http://www.iop.org
+/roles/book-part-epub-locator" title="Photonic crystal light-emitting
+ sources">
</locator>
</contents>
</book>
[download]