Regarding XML::LibXML::Element

* Karthick Radhakrishnan wrote:
>I'm creating and modifying XML file using perl module
XML::LibXML::Element.
>
>But I'm getting Error when I'm using
"appendChild" method. Atlast I found
>that there is no Element.pm in XML::LibXML
distribution.

There is no module XML::LibXML::Element, there is only a
package with
that name in the XML::LibXML module. Presumably you tried to
`use XML::
LibXML::Element;` which will fail. You have to `use
XML::LibXML;` and
the package will become available.
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On Fri, 2007-08-24 at 20:58 +0530, Karthick Radhakrishnan
wrote:
> Hi there,
> 
> I'm creating and modifying XML file using perl module
> XML::LibXML::Element.
> 
> But I'm getting Error when I'm using
"appendChild" method. Atlast I
> found that there is no Element.pm in XML::LibXML
distribution.
> 

What error are you getting?

As Björn pointed out there is no separate
XML::LibXML::Element module.

/J
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On Mon, 2007-08-27 at 10:28 +0530, Karthick Radhakrishnan
wrote:
> Bjoern & Jonathan,
> Thanks for your reply. Here is the detailed one.
> There is no module XML::LibXML::Element. Instead of
package I said
> module. sorry for that.
> 
> I'm trying to insert a new tag. See below xml
> 
> The Error I got is
> "
> Can't locate object method "appendChild" via
package
> "XML::LibXML::NodeList" at xmlCreate.pl line
34.
> "
> 
> Code
> use strict;
> use warnings;
> use XML::LibXML;
> 
> my $xmlFile = "library.xml";
> my $isbn = "076455106X";
> 
> my $xmlObj = XML::LibXML->new();
> my $doc = $xmlObj->parse_file($xmlFile);
> my $book  = $doc->findnodes("//book[isbn =
'$isbn']");
> 


In a scalar context (such as you have above) findnodes()
returns an
XML::LibXML::NodeList object - irrespective  of the number
of nodes
found.  If you are absolutely sure that you will only find
one node with
your expression then you can do:

   my $book  = ($doc->findnodes("//book[isbn =
'$isbn']"))[0];

(i.e putting the RHS in a list context and taking the first
element of
the list or:

  my $book  = $doc->findnodes("//book[isbn =
'$isbn']")->shift();

(i.e. shift() the first element off the
XML::LibXML::NodeList )

/J

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