Greetings monks,

I am trying to use the cpan Workflow module but despite having read (and reread) the docs seem to be coming unstuck on what I think is a basic lack of my understanding of OO Perl, Im hoping some experienced monks might be able to point me in the right direction ....
just as a simple test example to upload a file I have a workflow xml:

 <workflow
       type="uplfile" persister="Filesystem">
     <time_zone>local</time_zone>
     <description>This is the Blast sequence alignment workflow.</desc
+ription>
     <state name="INITIAL" autorun="yes">
         <action name="upload file" resulting_state="uploaded" />
     </state>
     <state name="uploaded" autorun="yes">
         <action name="null" resulting_state="finished">
         </action>
     </state>
     <state name="finished" />
</workflow>
[download]

and a corresponding action.xml

<actions>
     <type>uplfile</type>
     <action name="upload file" class="myapp::Upload_file">    
     </action>
     <action name="null"        class="Workflow::Action::Null" />
</actions>
[download]

in the myapp subdirectory there is an Upload_file.pm which simply opens up and prints out a short text sequence:

package Upload_file;

use strict;
use Fcntl;

use base qw( Workflow::Action );
use Workflow::Exception qw( workflow_error );

sub new {
   my $class = shift;
   my $self  = {};
   bless ($self, $class);
   return $self;
}

sub execute {
   my ( $self, $wf ) = @_;

    my $ifile = "/mypath/to/codelib/perl/lib/myapp/testseq.txt";

    sysopen(IFILE, $ifile, O_RDONLY)
       or die "Can't open $ifile : $!";

    my @file = <IFILE>;

    close IFILE;

   print "testseq is ", @file, "\n";
  return 1;

}

1;
[download]

when I try and execute this action from the calling script:

#! /bin/perl -w

use strict;
use Workflow::Factory qw( FACTORY );
use Fcntl;
use File::Basename;

Log::Log4perl::init('l4p.conf');


my $workflow_conf  = 'wf_test.xml';
my $action_conf    = 'action.xml';
my $pers           = 'persister.xml';

FACTORY->add_config_from_file(
     workflow   => $workflow_conf,
     action     => $action_conf,
     persister  => $pers,

);


my $wf = FACTORY->fetch_workflow('uplfile', "PITGKDNR");

print "Workflow 1 ", $wf->id, " ",
       "currently at state ", $wf->state, "\n";

print "Available actions: ", $wf->get_current_actions, "\n";

$wf->execute_action('upload file');
[download]

the execute action fails:

Workflow 1 PITGKDNR currently at state INITIAL
Available actions: upload file
Can't locate object method "new" via package "myapp::Upload_file" at /
+lib/x86_64/pkg/perl-5.8.8/lib/site_perl/5.8.8/Workflow/Factory.pm lin
+e 546.
[download]

but there is a new method in the Upload_file package, and if I call

Upload_file->new()->execute();
[download]

instead I get the text from the file (but not via the workflow of course)...