Hi, I have the xml file file this, perl script to create hash

<university>
<name>svu</name>
 <location>ravru</location>
 <branch>
   <electronics>
     <student name="mikky" number="12">
     <semester number="1"subjects="7" rank="2"/>
     </student>
     <student name="vijju" number="15">
     <semester number="1" subjects="7" rank="10"/>
     <semester number="2" subjects="4" rank="1"/>
      </student>
       <student name="shyam" number="16">
       <semester number="1"subjects="7" rank="2"/>
      <semester number="2"subjects="4" rank="2"/>
       </student>
    </electronics>
 </branch>
 </university>.
              . 
              .
              .
              .
              .
 <data>
 <student name="mikky" number="1" branch="computers" />
 <student name="vijju" number="2" branch="electronics" />
<student name="shyam" number="3" branch="EEE" />
<student name="csr" number="4" branch="IT" />
<student name="msr" number="5" branch="MEC" />
<student name="ssr" number="6" branch="computers" />
<student name="msr" number="1" branch="CIV" />
.............................
..............................
.....................
</data>

[download]

how to create hash table for data elements. name and number as the key and branch is the value in that hash. why I need like this means some students have same name and some students have same number. by using this hash keys I have to search in the university node for student if found and print branch name of each student.

I written some script in XML::Simple but I am not able to create hash.

#!/usr/bin/perl
use warnings;
use strict;
use Data::Dumper; 
use XML::Simple;

my $xml = new XML::Simple;
my $data = $xml->XMLin("data.xml", forcearray => [ 'student' , 'semist
+er'],                                                                
+                   KeyAttr=>{student=>"+Name"});

print Dumper($data);

[download]
its printing like this by using data dumper. 
$var1={
      
      'data'=>{
                'student'=>[
                              {
                               'name'=>'mikky',
                               'number'=>'12',
                               'branch'=>'computers',
                                },

                               {
                               'name'=>'vijju',
                               'number'=>'15',
                               'branch'=>'electronics',
                                },

                               {
                               'name'=>'shyam',
                               'number'=>'16',
                               'branch'=>'EEE',
                                },
                              ],

             
        'university'=>{
               'name'=>'svu',
               'location'=>'ravru',
                 'branch'=>{
                     'electronics'=>{
                                'student'=>[
                                         {
                                        'name'=>'mikky',
                                         'number'=>'12',
                                           'semester'=>{
                                                  'Number'=>'1',
                                                  'subjects'=>'7',
                                                   'rank'=>'2'
                                                  }
                                               },
                                       {
                                        'name'=>'vijju',
                                         'number'=>'15',
                                           'semester'=>[
                                                {
                                               'number'=>'1',
                                                'subjects'=>'7',
                                                 'rank'=>'10'
                                                  },
                                                 {
                                                'number'=>'2',
                                                'subjects'=>'4',
                                                 'rank'=>'1'
                                                  }
                                                 ]
                                               }, 
                                         {
                                        'name'=>'shyam,
                                         'number'=>'15',
                                           'semester'=>[
                                                {
                                               'number'=>'1',
                                                'subjects'=>'7',
                                                 'rank'=>'2'
                                                  },
                                                 {
                                                'number'=>'2',
                                                'subjects'=>'4',
                                                 'rank'=>'2'
                                                  }
                                                 ]
                                               },     
                                            ]
                                          }
                                         }
                                       };

[download]

but I need to print only data node elements only not university node elements.please halp me.

In reply to help me in perl script to create hash and print some data. by veerubiji

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