David Golden
and 2 contributors


Metabase::Fact::String - fact subtype for simple strings


version 0.020


  # defining the fact class
  package MyFact;
  use Metabase::Fact::String;
  our @ISA = qw/Metabase::Fact::String/;

  sub content_metadata {
    my $self = shift;
    return {
      'size' => [ '//num' => length $self->content ],

  sub validate_content {
    my $self = shift;
    die __PACKAGE__ . " content length must be greater than zero\n"
      if length $self->content < 0;

...and then...

  # using the fact class
  my $fact = MyFact->new(
    resource => 'RJBS/Metabase-Fact-0.001.tar.gz',
    content  => "Hello World",



Base class for facts that are just strings of text. Strings must be characters, not bytes.

You may wish to implement a content_metadata method to generate metadata about the hash contents.

You should also implement a validate_content method to validate the structure of the hash you're given.


Please report any bugs or feature using the CPAN Request Tracker. Bugs can be submitted through the web interface at http://rt.cpan.org/Dist/Display.html?Queue=Metabase-Fact

When submitting a bug or request, please include a test-file or a patch to an existing test-file that illustrates the bug or desired feature.


  • David Golden <dagolden@cpan.org>

  • Ricardo Signes <rjbs@cpan.org>

  • H.Merijn Brand <hmbrand@cpan.org>


This software is Copyright (c) 2011 by David Golden.

This is free software, licensed under:

  The Apache License, Version 2.0, January 2004