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accessing XML string using regular expression

krishperl
New User

Nov 18, 2009, 1:54 AM

Post #1 of 3 (4162 views)

accessing XML string using regular expression	Can't Post

/I have clubed both my postings to a single one so its more readable

query to fetch the first name,lastname,id of that particular login.

Here is the string

<?xml version="1.0"?><poc_list name="node"><poc notify="on" userType="login" includeHistory="off">fieldwatch</poc></poc_list>

The field I am trying to read is fieldwatch which is the login name in a table called user.

i need help in reg exp to read that login name and use that with a query in array to read users first_name,last_name from another table called user. ( which is accessed using DBI - mySQL)

more to add here is that the items for user table

id,last_name,first_name,role,login etc.

what ever values I get from reading the xml string eg "fieldwatch" need to be stored in array. and use that array to read all the user last_name,first_name etc from the user table.

toolic
User

Nov 18, 2009, 11:22 AM

Post #2 of 3 (4144 views)

Re: [krishperl] accessing XML string using regular expression [In reply to]	Can't Post

Parsing XML is notoriously difficult. If you are open to an alternative solution, use a CPAN XML parser module, such as XML::Twig:

Code

use strict; 
use warnings; 
use XML::Twig; 
 
my $xfile = <<'EOF'; 
<?xml version="1.0"?><poc_list name="node"><poc notify="on" userType="login" includeHistory="off">fieldwatch</poc></poc_list>  
EOF 
 
my $t = new XML::Twig(); 
$t->parse($xfile); 
my $plist = $t->root(); 
print $plist->first_child('poc')->text(), "\n";

ichi
User

Nov 19, 2009, 5:10 PM

Post #3 of 3 (4082 views)

Re: [krishperl] accessing XML string using regular expression [In reply to]	Can't Post

without XML parser (not recommended for complex XML parsing)

Code

$str=q(<?xml version="1.0"?><poc_list name="node"><poc notify="on" userType="login" includeHistory="off">fieldwatch</poc></poc_list>); 
@s = split "</poc>", $str ; 
$s[0] =~ s/.*>//; 
print $s[0];

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