XML Parsing - Finding a particular node

[joe2684]

I am working on a university masters project. It involves extracting information from xml files. The xml file consists of information as shown below.

<Moved to attachment - MOD>

I have to write a code, so that whenever the user enters the node_id, the information about that node gets retrieved, in xml format.

I have been trying many approaches, but to no avail. Please help me out on it, as I am nearing the deadline. Please.

Thanks..

[numberwhun]

First, nice user name.

Writing code isn't all that bad and we can certainly do our best to help you. Why not post what you have tried thus far and we can help you achieve your goal and point you in the right direction.

Regards,

Jeff

[joe2684]

Thanks for the reply, Jeff. Here's what I had done.

#!/usr/bin/perl
 
use strict;
use warnings;
 
$node=<STDIN>;
chomp($node);
 
my @nodeinfo = ( );
 
open (NODEINFO,"C:\\test.xml") || die "cannot open nodefile: $!\n";
 
my @nodeinfo = <NODEINFO>;
 
close NODEINFO;
 
foreach $nodeid(@nodeinfo) {
    if ($nodeid =~ /<node_id (.*) <\ /node>/) {
        print $nodeid;
    }
}
 

I am basically from biology field, but trying to grasp perl for this part of my project. I have tried out many similar programs after looking out in various books.

By the way, I have now got one day less for my deadline.

[numberwhun]

I have not, unfortunately, played with any of the XML modules to any extent, but you may want to look at this page. That is the page for the XML::Simple module. It describes right in the beginning how you can use this module to slurp in the XML, and then Data::Dumper to more easily get at the information contained within each set of elements.

Hopefully this will get you pointed in the right direction. I also hope that some of the others that have dealt with XML will throw some advice you way as well, if they have a minute.

Regards,

Jeff

[joe2684]

Thanks a lot Jeff!!!

The XML::Simple works beautifully in reading the xml into hash, but I am still finding problem with extracting information about one particular node.
Any help, or suggestions are welcome.

Thank you