---
name: "RDF::Closure::Engine"
section: "3pm"
platform: "linux"
package: "librdf-closure-perl"
version: "0.001-5"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/RDF::Closure::Engine"
---

# RDF::Closure::Engine(3pm)

an engine for inferring triples

## NAME

RDF::Closure::Engine - an engine for inferring triples

## DESCRIPTION

### Constructor

- •

  `"new($regime, $model, @arguments)"`

  Instantiates an inference engine. This:

  ```
    RDF::Closure::Engine->new('RDFS', $model, @args);
  ```

  is just a shortcut for:

  ```
    RDF::Closure::Engine::RDFS->new($model, @args);
  ```

  Though in the former, 'RDFS' is treated case-insensitively.

  `$model` must be an RDF::Trine::Model which the engine will read its input from and write its output to.

### Methods

- •

  `"entailment_regime"`

  Returns a URI string identifying the type of inference implemented by the engine, or undef.

- •

  `"graph"`

  Returns the RDF::Trine::Model the engine is operating on.

- •

  `"closure( [ $is_subsequent ] )"`

  Adds any new triples to the graph that can be inferred.

  If `$is_subsequent` is true, then skips axioms.

- •

  `"errors"`

  Returns a list of consistency violations found so far.

- •

  `"reset"`

  Removes all inferred triples from the graph.

### Class Method

- •

  `"engines"`

  Return a list of engines installed, e.g. 'RDF::Closure::Engine::RDFS'.

## SEE ALSO

RDF::Closure, RDF::Closure::Engine::RDFS, RDF::Closure::Engine::OWL2RL, RDF::Closure::Engine::OWL2Plus.

\<http://www.perlrdf.org/\>.

## AUTHOR

Toby Inkster \<tobyink@cpan.org\>.

## COPYRIGHT

Copyright 2011-2012 Toby Inkster

This library is free software; you can redistribute it and/or modify it under any of the following licences:

- •

  The Artistic License 1.0 \<http://www.perlfoundation.org/artistic\_license\_1\_0\>.

- •

  The GNU General Public License Version 1 \<http://www.gnu.org/licenses/old-licenses/gpl-1.0.txt\>, or (at your option) any later version.

- •

  The W3C Software Notice and License \<http://www.w3.org/Consortium/Legal/2002/copyright-software-20021231\>.

- •

  The Clarified Artistic License \<http://www.ncftp.com/ncftp/doc/LICENSE.txt\>.

## DISCLAIMER OF WARRANTIES

THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.