use XML::Rules;

my $parser = XML::Rules->new(
  rules => [
    Item => sub { $_[1]->{Name} => $_[1]->{_content}},
      # take only the name and content from the <Item> 
      # and make it available using the Name as the key
    Id => 'content',
    DocSum => sub {
      print "Id: $_[1]->{Id}\nName: $_[1]->{Name}\nFoo: $_[1]->{Foo1}, $_[1]->{Foo2}\n\n";
      return; # we are done with the <DocSum>, no need to keep the data
    },
  ]
);

$parser->parse($the_file);