Rob,
----- Original Message -----
From: "Rob Dixon" <[EMAIL PROTECTED]>
To: <beginners@perl.org>
Cc: "Mike Blezien" <[EMAIL PROTECTED]>
Sent: Wednesday, July 25, 2007 10:57 AM
Subject: Re: Parsing large XML file - Revisited
Mike Blezien wrote:
Mirod wrote:
On Jul 22, 3:33 am, [EMAIL PROTECTED] (Dr.Ruud) wrote:
"Mike Blezien" schreef:
> my $article_number = $elt->first_child_text('article_number');
> my $dist_number = $elt->first_child_text('distributor_number');
> my $dist_name = $elt->first_child_text('distributor_name');
> my $artist = $elt->first_child_text('artist');
> my $ean_upc = $elt->first_child_text('ean_upc');
> my $set_total = $elt->first_child_text('set_total');
That looks awful. Isn't there some way with the module to do it cleaner?
Or do it more like:
my @text_tags = qw(article_number distributor_number etc);
my %data;
for my $tag (@text_tags) {
$data{_text}{$tag} = $elt->first_child_text($tag);
}
just a quick note, that first_child_text can also be written field,
which often makes more sense in a data oriented context.
that was an excellent idea :) Alot cleaner and alot less coding involved.
Still fairly new working with XML parsing.
Hi Mike
Using a shorter synonym for a method isn't a significant improvement. I prefer
the 'first_child_text' name as it is more descriptive, and if I was using
exactly the code above I would rewrite it as:
my ($article_number, $dist_number, $dist_name, $artist, $ean_upc, $set_total)
= map {
$elt->first_child_text($_)
} qw/article_number distributor_number distributor_name artist ean_upc
set_total/
But I made no changes to your code apart from to correct the semantics as it
wasn't
at all obvious what you're doing. The code you posted just extracts XML field
text
values into a number of lexical variables and then discards them. If you give
us an
idea what your final intention is then I'm sure we can help, and it probably
won't
involve using 'field' instead of 'first_child_text'; but it is likely that a
hash
structure would be more appropriate.
As I mentioned in an earlier post, it's important to separate XML nodes from
their
textual content. XML::Twig methods return both types of data and it's best not
to mix
them up. More importantly, you can always extract the text data value from an
XML node,
but the reverse isn't true.
Obviously there are several approaches to accomplish this task. With the help of
yourself and others who posted, I have been able to put together a fairly
efficient script, as we need to process & parse approx., 5000+ XML files
averaging 9-1000KB's in size. So far it has been working smoothly :)
Mike
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