<tool id="get_relationship_types" name="Get all the relationship types in an ontology" version="1.22">
  <description>Collects the relationship types in the given OBO ontology</description>
  <command interpreter="perl">/usr/bin/get_relationship_types.pl $input_ontology > $output</command>
  <inputs>
    <param format="text" name="input_ontology" type="data" label="Source file"/>
  </inputs>
  <outputs>
    <data format="tabular" name="output" />
  </outputs>

  <tests>
    <test>
      <param name="input" value="pre_cco_core.obo"/>
      <output name="out_file" file="relationship_types.txt"/>
    </test>
  </tests>

  <help>

.. class:: infomark


Collects all the names of the relationship_types in a given ontology.

**Example**

If you ask for the relationships of the Gene Ontology, you will get::

  is_a
  part_of
  regulates
  has_part
  negatively_regulates
  positively_regulates

**More information**

  ONTO-PERL: An API supporting the development and analysis of bio-ontologies
  E. Antezana; M. Egana; B. De Baets; M. Kuiper; V. Mironov
  Bioinformatics 2008; doi: 10.1093/bioinformatics/btn042

  </help>

</tool>