XML::LibXML::PI(3) User Contributed Perl Documentation XML::LibXML::PI(3)

NAME
       XML::LibXML::PI - XML::LibXML Processing Instructions

SYNOPSIS
         $pinode->setData( $datastring );
         $pinode->setData( name=>stringvalue [...] );

DESCRIPTION
       Processing instructions are implemented with XML::LibXML with read and
       write access. The PI data is the PI without the PI target (as specified
       in XML 1.0 [17]) as a string. This string can be accessed with getData
       as implemented in XML::LibXML::Node.

       The write access is aware about the fact, that many processing
       instructions have attribute like data. Therefore setData() provides
       besides the DOM spec conform Interface to pass a set of named
       parameter. So the code segment

         my $pi = $dom->createProcessingInstruction("abc");
         $pi->setData(foo=>'bar', foobar=>'foobar');
         $dom->appendChild( $pi );

       will result the following PI in the DOM:

         

       Which is how it is specified in the DOM specification. This three step
       interface creates temporary a node in perl space. This can be avoided
       while using the insertProcessingInstruction() method. Instead of the
       three calls described above, the call

         $dom->insertProcessingInstruction("abc",'foo="bar" foobar="foobar"');

       will have the same result as above.

       XML::LibXML::PI's implementation of setData() differs a bit from the
       the standard version as available in XML::LibXML::Node():

       sseettDDaattaa
             $pinode->setData( $datastring );
             $pinode->setData( name=>stringvalue [...] );

           This method allows to change the content data of a PI. Additionaly
           to the interface specified for DOM Level2, the method provides a
           named parameter interface to set the data. This parameterlist is
           converted into a string before it is appended to the PI.

AUTHORS       Matt Sergeant, Christian Glahn, Petr Pajas,

VVEERRSSIIOONN
       1.60

COPYRIGHT
       2001-2006, AxKit.com Ltd; 2002-2006 Christian Glahn; 2006 Petr Pajas,
       All rights reserved.



perl v5.8.8                       2006-08-26                XML::LibXML::PI(3)