XML::LibXML::PI(3) User Contributed Perl Documentation XML::LibXML::PI(3)NAMEXML::LibXML::PI - XML::LibXML Processing Instructions
SYNOPSIS
$pinode->setData( $data_string );
$pinode->setData( name=>string_value [...] );
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:
<?abc foo="bar" foobar="foobar"?>
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():
setData
$pinode->setData( $data_string );
$pinode->setData( name=>string_value [...] );
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, =head1 VERSION
1.58
COPYRIGHT
2001-2004, AxKit.com Ltd; 2002-2004 Christian Glahn, All rights
reserved.
perl v5.10.0 2004-03-31 XML::LibXML::PI(3)
