customized seach function

[Shreelakshmi G.M]

I would like to create customized form where there would be search functionality which is just a keyword search i.e it may search either a class or a property or an instance.

Autocomplete did not work as it can be either for class or for instance. whatever we give in arg:type that will be searched. owl:Thing is for instances and owl:Class is for class. Let me know what should be the arg:type to search all these.

-Shreelakshmi

[Holger Knublauch]

Have you tried rdfs:Resource? (This assumes you are operating on a graph that has all imports including the system triples - using _withImports=true on the servlet or ui:graphWithImports(?graph) on the graph would do this.

Holger

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[Shreelakshmi G.M]

Yes. i am embedding the SWA components in html, and I am following the example that is there in TBC.

In html page I have this swa.queryGraphURI = "http://rdfex.org/withImports?uri=http://www.kanoe.org/ontology/myGraph";

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[Shreelakshmi G.M]

Also I have tried using rdfs:Resource and it does not show any result.

[Irene Polikoff]

Have you tried rdfs:Resource as the arg:type?

Sent from my iPhone

[Irene Polikoff]

If you change the argument to be owl:Thing or owl:Class you get the results, but if you use rdfs:Resource you don't. Is this correct?

Sent from my iPhone

[Holger Knublauch]

I have just tried that, using swadoc:AutoCompleteExample:

<swa:AutoComplete arg:id="property" arg:type="rdfs:Resource"/>

and it appears to work fine for me - all resources show up. Are you sure that all instances in your data have rdfs:labels etc?

Holger

[Shreelakshmi G.M]

@Irene Polikoff : yes with owl:Class I get all the classes and with owl:Thing I get all instances. I need both classes and instances in a single Autocomplete tag.

@Holger Knublauch: yes all the instances have rdfs:label in the RDF file I am using and the file is bult using TBC itself.

this is the snippet for one of the instance in the RDF file :

<prefixA:classA rdf:ID="instanceA">

    <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">instanceA</rdfs:label>

  </prefixA:classA>

[Shreelakshmi G.M]

To make it simple, I just created a RDF file with single owl class in it, even that class is also not listed by rdfs:Resource argument.

 <owl:Class rdf:ID="t">

    <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string"

    >t</rdfs:label>

  </owl:Class>

This is the snippet for class in RDF file.

[Shreelakshmi G.M]

I could recognize the where the problem is. If I use .ttl serialization, I can use rdfs:Resource to list all resources but the same cannot be done using RDF/XML serialization.

Is there any solution for this as I have already built an ontology in RDF/XML which I need to use. 

[Irene Polikoff]

This sounds peculiar. By the time you are running your code, everything should already be de-serialised. 

Can you successfully open your RDF/XML file in TBC?

Irene Polikoff

[Shreelakshmi G.M]

Yes, it opens. Actually, I created RDF/XML file in TBC itself. To test I created one .rdf file and one .ttl file with 2 classes and some instances. Then I tried using rdfs: Resource. It works with .ttl and not with .rdf.

[Irene Polikoff]

OK, we will investigate.

As an aside, you can save your RDF/XML file in Turtle by using Export > TopBraid Composer > Export/Merge/Convert RDF Graphs.

Irene Polikoff

[Shreelakshmi G.M]

Thanks Irene I will try saving RDF to turtle and check.

[Holger Knublauch]

This is really weird. The serialization really should not make a difference. The only explanation I have would be that the owl: namespace is somehow pointing at something else than we believe. If you can't get it to work, please send a minimal but complete set of RDF files for us to reproduce the problem. We are otherwise speculating on an incomplete picture.

Holger

[Shreelakshmi G.M]

To test I just created a simple RDF file TBC. I am attaching the file along.

I am using rdfs:Resource as below :

<swa:BorderLayout arg:southSize="150" arg:style="width: 400px; height: 400px">

    <swa:Window arg:id="searchFormWindow" arg:layoutPanel="center" arg:title="Search Form">

        <swa:FormSearchGadget arg:classSelectedEvent="org.example.classSelected" ui:args="*"/>

        <div>

            <h3>Please select a property</h3>

            <div>

                <span>Property: </span>

                <swa:AutoComplete arg:id="property" arg:type="rdfs:Resource"/>

                <br/>

                <br/>

                <button onclick="alert('Selected: ' + $('#property').val())">Show Selection</button>

            </div>

        </div>

    </swa:Window>

    <swa:Window arg:id="searchGridWindow" arg:layoutPanel="south" arg:title="Search Results">

        <swa:GridSearchResultsGadget arg:resourceSelectedEvent="org.example.resourceSelected"/>

    </swa:Window>

</swa:BorderLayout>

In the html page I have this :

swa.queryGraphURI = "http://rdfex.org/withImports?uri=http://topbraid.org/examples/testRDF";

[Shreelakshmi G.M]

Sorry, there was a mistake,

In html page, it is

swa.queryGraphURI = "http://www.kanoe.org/ontology/testRDF";

[Holger Knublauch]

Ok, thanks for sending me the necessary files off-list. Going back into the list for the resolution.

Yes, there is a problem here: when you use rdfs:Resource as the main class, you will
- get thousands of matches that you don't really want (all system resources)
- run into a bug unless you also import skos:prefLabel (we'll fix that)

To cut a long story short, if you really want to see all resources (which I doubt), then add an owl:imports to skos-core. Otherwise, add only the system triples that you really want "by hand" into the base graph and use the the graph without imports in your data model. So if you add the following (in Turtle):

rdfs:Class
  rdfs:subClassOf rdfs:Resource ;
.
owl:Class a rdfs:Class ;
  rdfs:subClassOf rdfs:Class ;
.
rdfs:Class a rdfs:Class ;
  rdfs:subClassOf rdfs:Resource ;
.
rdf:Property
  a rdfs:Class ;
.

and change

            swa.queryGraphURI = "http://www.kanoe.org/ontology/testRDF";

I cannot guarantee that the rest of the widgets will still work correctly without the system graph, so you may need to only set the swa.queryGraphURI when the AutoComplete field is created and otherwise use the graph with imports.

HTH
Holger

[Shreelakshmi G.M]

Thanks Holger for the solution. I added the required system triples in the graph and used the graph without imports. Still I am not able to get the result. I will check again if I have done any other mistakes.

Thanks,

Shreelakshmi

I 

[Shreelakshmi G.M]

Hello Holger,

I have added these triples,

owl:Ontology a rdfs:Class ; 

      rdfs:subClassOf rdfs:Resource . 

      

 

owl:Class a rdfs:Class ;

      rdfs:subClassOf rdfs:Class .

rdfs:Class a rdfs:Class ;

      rdfs:subClassOf rdfs:Resource .

Now the problem is, I am able to list classes but not instances. Is it necessary to add any other triples linking instance to rdfs:Resource. I tried using 

test:a rdfs:subClassOf owl:Thing .

but this also did not work.

Thanks,

Shreelakshmi

[Holger Knublauch]

Also add owl:Thing rdfs:subClassOf rdfs:Resource.

Holger

[Shreelakshmi G.M]

Thanks, it worked. I added:

owl:Thing a owl:Class ;

     rdfs:label "Thing" ;

     rdfs:comment "The class of OWL individuals." ;

     rdfs:isDefinedBy <http://www.w3.org/2002/07/owl#> ;

     rdfs:subClassOf rdfs:Resource .

and removed test:a rdfs:subClassOf owl:Thing .