I have come across the need to use an event driven setup called from a class method. The problem is that, when I call the class method and setup the callback, I then loose all access to the class object in the callback method. Is there any way to retain visibility to the calling classes object in the callback method?
Here is a simple example:
package XMLParse;
use strict;
use XML::Parser;
sub new {
my $class = shift;
my $self = {
'i_need_this' => 'important',
};
bless $self, $class;
return $self;
}
sub parse {
my ($self, $xmlfile) = @_;
my $parser = XML::Parser->new(
Handlers => {Start => \&handle_start,
End => \&handle_end,
Char => \&handle_char}
);
$parser->parsefile($xmlfile);
}
sub handle_start {
....
}
sub handle_end {
....
}
sub handle_char {
....
}
1;
In this example, I need access to the attribute 'i_need_this' in the XMLParse class object from within the xml parser callback methods. How to I go about getting at it?
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
Read Where should I post X? if you're not absolutely sure you're posting in the right place.
Please read these before you post! —
Posts may use any of the Perl Monks Approved HTML tags:
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
| |
For: |
|
Use: |
| & | | & |
| < | | < |
| > | | > |
| [ | | [ |
| ] | | ] |
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.