Ricardo SIGNES 😄


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


  # defining the fact class
  package MyFact;
  use base '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 A. Golden (DAGOLDEN)

  • Ricardo J. B. Signes (RJBS)


 Portions copyright (c) 2008-2009 by David A. Golden
 Portions copyright (c) 2008-2009 by Ricardo J. B. Signes

Licensed under the same terms as Perl itself (the "License"). You may not use this file except in compliance with the License. A copy of the License was distributed with this file or you may obtain a copy of the License from http://dev.perl.org/licenses/

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.