comment on

<book:bookResource>
<book:book>
<book:meta coverImage="/cover.gif" doi="10.1088" publicationDate="2016
+-12-01" issn="1111-222X" collectionId="0001">
<book:title title="Lattice dynamics">
<book:subTitle>Book 17</book:subTitle></book:title>
<book:isbn isbn="979-0-4444-1000-17" type="epub"/>
<book:isbn isbn="979-0-4444-2000-2" type="ppub"/>
</book:meta>
</book:bookResource>
</book:book>
[download]

How can I get isbn="979-0-4444-1000-17" for type="epub"? I tried the following code, but of no use. Help me please.

use XML::LibXML;

my $parser = XML::LibXML->new();
my $doc    = $parser->parse_file("book_service.xml");
my $xpc = XML::LibXML::XPathContext->new($doc->documentElement());

foreach my $book_node ($xpc->findnodes('/book:bookResource/book:book/b
+ook:meta'))
{
    foreach $book_element ('./*/@isbn[@type="epub"]')
    {
        print $book_node->findvalue($book_element);
        }
}
[download]

In reply to How do i get value of an element if the next elememnt has specific value in XML::LibXML using Xpath? by ravi06

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.


go ahead... be a heretic
	PerlMonks