SWRL rules dont appear.

[vChavezB]

I am trying to generate the SWRL rules I declare in my ontology but they dont apper after I generate the project.

The rules section appears empty with just a the title "4.6 Rules" and a blue rectangle

Do you have an example ontology that is known to be working and I can use to check if its just on my side?

Here is an excerpt of how I declare my SWRL rules (generated with protege)

@prefix swrl: <http://www.w3.org/2003/11/swrl#> .
[ <http://swrl.stanford.edu/ontologies/3.3/swrla.owl#isRuleEnabled> "true"^^xsd:boolean ;
   rdfs:label "My rule" ;
   rdf:type swrl:Imp ;
   swrl:body [ rdf:type swrl:AtomList ;
               rdf:first [ rdf:type swrl:ClassAtom ;
                           swrl:classPredicate :ApplicationDataObject ;
                           swrl:argument1 :ao
                         ] ;
               rdf:rest [ rdf:type swrl:AtomList ;
                          rdf:first [ rdf:type swrl:DatavaluedPropertyAtom ;
                                      swrl:propertyPredicate :isProcessData ;
                                      swrl:argument1 :ao ;
                                      swrl:argument2 "true"^^xsd:boolean
                                    ] ;
                          rdf:rest rdf:nil
                        ]
             ] ;
   swrl:head [ rdf:type swrl:AtomList ;
               rdf:first [ rdf:type swrl:ClassAtom ;
                           swrl:classPredicate :ProcessDataObject ;
                           swrl:argument1 :ao
                         ] ;
               rdf:rest rdf:nil
             ]
 ] .

[vChavezB]

I debugged the app and I am not sure if swr rules are parsed

the XLST output for swr rules looks as this. In this example I added two rules to an ontology.

    <div id="swrlrules">
            <h2>SWRL rules</h2>
            <div id="d4e4498" class="entity">
                <h3>Rule #1
                    <span class="backlink">back to 
                        <a href="#toc">ToC</a>
                    </span>
                </h3>
                <p>
                    <a href="#d4e4288" title="http://datos.bne.es/def/C1001">Work</a>
                    <sup title="class" class="type-c">c</sup>(?) -&gt; 
                    <a href="#d4e4316" title="http://datos.bne.es/def/C1002">Expression</a>
                    <sup title="class" class="type-c">c</sup>(?)
                </p>
            </div>
            <div id="d4e4558" class="entity">
                <h3>Rule #2
                    <span class="backlink">back to 
                        <a href="#toc">ToC</a>
                    </span>
                </h3>
                <p>
                    <a href="#d4e4288" title="http://datos.bne.es/def/C1001">Work</a>
                    <sup title="class" class="type-c">c</sup>(?) -&gt; 
                    <a href="#d4e4316" title="http://datos.bne.es/def/C1002">Expression</a>
                    <sup title="class" class="type-c">c</sup>(?)
                </p>
            </div>
        </div>

So my guess is that the SWRL html parser is not implemented in widoco due to the fact that I was debugging and the id for the html div is different. I changed the id to swrlrules but the program crashes.

https://github.com/dgarijo/Widoco/blob/4da92b23995c37a95662bce03a8a174ccaa44f7f/src/main/java/widoco/LODEParser.java#L186

[vChavezB]

Ok I made a PR #652 perhaps you can check if it looks fine. The rules are now displayed. However as you see the first element is "null".

[vChavezB]

ok an update now the rules look much better with annotation from rdfs:comment and rdfs:label

this requires changing the xslt of swrl-rules in specific , havent made a PR as I hope this gets merged first :) #653

    <xsl:template match="swrl:Imp | rdf:Description[rdf:type[@rdf:resource = 'http://www.w3.org/2003/11/swrl#Imp']]">
        <div id="{generate-id()}" class="entity">
            <h3>
                <xsl:value-of select="concat('Rule #', count(preceding-sibling::swrl:Imp | preceding-sibling::rdf:Description[rdf:type[@rdf:resource = 'http://www.w3.org/2003/11/swrl#Imp']]) + 1, ' ', rdfs:label)" />
                <xsl:call-template name="get.backlink.to.top" />
            </h3>
            <p>
                <!-- Add rdfs:comment -->
                <xsl:if test="rdfs:comment">
                    <strong>Comment: </strong>
                    <xsl:value-of select="rdfs:comment" /><br/><br/>
                </xsl:if>
                <!-- Continue with the existing content -->
                <xsl:apply-templates select="swrl:body" />
                <xsl:text> -> </xsl:text>
                <xsl:apply-templates select="swrl:head" />
            </p>
        </div>
    </xsl:template>

[dgarijo]

Thanks a lot. So far, I think no swrl rules were considered, as I did not have a use case for them (I may have simplified them from the XSLT output). I will need to review the PR, since in the develop branch I was considering other types of rules I had been asked to include (but not SWRL). This is a great addition!

[dgarijo]

Just pls make sure you send your PRs to the right branch @vChavezB (see https://github.com/dgarijo/Widoco#contribution-guidelines)

[vChavezB]

I read the code again and the xlst sources. So if I understand correctly the "rules" extraction uses annotations from owl Individuals or which type of rules does it parse.

https://github.com/dgarijo/Widoco/blob/4da92b23995c37a95662bce03a8a174ccaa44f7f/src/main/resources/lode/extraction.xsl#L2334

I did not found a sample ontology that uses this transformation. This would be helpful to know as it was not clear to me. I will update the PR and refine it.

[dgarijo]

@vChavezB sorry, the rules stuff I added is for very specific owl annotations for a specific project I am doing.

The SWRL module you added recovers the original SWRL annotations, and I think they should be added, but separately. Please just ignore the module I did for annotations of rules and use a new one with the id you gave, as you were doing. Thanks in advance!

[dgarijo]

This issue should now be closed and will be up in the next release See #654 for more info. Thanks @vChavezB for your work!!