XML::Simple tries to provide a simple interface but it does assume a knowledge of Perl references. I recommend perlreftut.

The most common mistake with XML::Simple is to ignore the advice in the docs about the ForceArray and KeyAttr options. Always set ForceArray => 1 if you're not sure, and setting it to an array of element names is probably the best way.

I also recommend setting KeyAttr => [] unless you know what you want. In the case of the original XML snippet, KeyAttr =>  'DlrItemNum' might be useful.

I suspect the line that says if ( ref $thing eq "SCALER" ); will never get executed.

If you're processing big XML files, XML::SAX might be a good answer. XML::SAX::ByRecord from Barrie Slaymaker's XML::SAX::Machines could be very handy once you have your head around SAX.

But, XML::Twig is possibly the best answer for simple record oriented processing.

Edit: Sorry, I typed 'always set ForceArray => 0 ...' when I meant 'ForceArray => 1 ...'


In reply to Re: Re: easy way of parsing XML by grantm
in thread easy way of parsing XML by amir

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":



  • 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:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.