& XSLT On Mon, 2006-11-13 at 19:12 -0500, Jaebin Lee wrote:
>  Hi,
>  I'm just trying to use the getLength function off of a xml node, but
>  get an error when used it.
>  
>  the error is saying: "can't call method "getLength" without a package
>  or object reference"
>  
>  and this is part of my codes.

Your script is missing:

  use strict;
  use warnings;

Which would have picked up the error for you.

>  my @root = $doc->getElementsByTagName("environmentConfig");
>  my $length = @root->getLength;

You can't call the getLength method on an array.

The getElementsByTagName method is sensitive to whether it is called in
scalar or list context.  You've called it in list context, so to get the
number of elements returned, you just need to know the length of the
list:

  my $length = @root;

Alternatively, if you call the method in scalar context, you get a
NodeList object rather than an array of matching nodes.  You can call
getLength on that object:

 my $root = $doc-> getElementsByTagName("environmentConfig");
 my $length = $root-> getLength;

But having said all that, you obviously haven't got very far with your
project yet, so now would be a good time to switch to using XML::LibXML
rather than XML::DOM.  The XML::LibXML module supports XPath and that
will make things much easier for you.

Regards
Grant

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