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nl.coinsweb.sdk.apolda.iterator.SparqlPropertyDeclarationIterator Maven / Gradle / Ivy
/**
* MIT License
*
* Copyright (c) 2016 Bouw Informatie Raad
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
**/
package nl.coinsweb.sdk.apolda.iterator;
import com.hp.hpl.jena.ontology.OntModel;
import com.hp.hpl.jena.ontology.OntProperty;
import com.hp.hpl.jena.query.*;
import com.hp.hpl.jena.rdf.model.RDFNode;
import com.hp.hpl.jena.rdf.model.Resource;
import com.hp.hpl.jena.rdf.model.impl.ResourceImpl;
import com.hp.hpl.jena.util.iterator.ClosableIterator;
import nl.coinsweb.sdk.apolda.language.Language;
import nl.coinsweb.sdk.apolda.ontology.PropertyDeclaration;
import nl.coinsweb.sdk.apolda.ontology.impl.PropertyDeclarationImpl;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.HashMap;
import java.util.Iterator;
/**
* @author Bastiaan Bijl, Sysunite 2016
*/
public class SparqlPropertyDeclarationIterator implements ClosableIterator {
private static final Logger log = LoggerFactory.getLogger(SparqlPropertyDeclarationIterator.class);
ResultSet resultSet;
QueryExecution queryExecution;
OntModel ontModel;
HashMap resultCollection = new HashMap<>();
Iterator resultIterator;
public SparqlPropertyDeclarationIterator(String clazz, OntModel model) {
this(clazz, model, null);
}
public SparqlPropertyDeclarationIterator(String clazz, OntModel model, String rangeSuper) {
String queryString =
" PREFIX rdf: " +
" PREFIX rdfs: " +
" PREFIX owl: " +
" SELECT ?property ?range ?card ?propertyLabel ?property_owner " +
" WHERE " +
" { " +
" { " +
" { " +
" { " +
" <"+clazz+"> rdfs:subClassOf* ?restriction . " +
" ?restriction owl:onProperty ?property . " +
" ?restriction owl:allValuesFrom ?range . " +
" } " +
" UNION " +
" { " +
" { " +
" <"+clazz+"> rdfs:subClassOf* ?property_owner . " +
" ?property rdfs:domain ?property_owner . " +
" ?property rdfs:range ?range . " +
" } " +
" UNION " +
" { " +
" <"+clazz+"> rdfs:subClassOf* ?property_owner . " +
" ?collection owl:unionOf ?union . " +
" ?union rdf:rest* ?subUnion . " +
" ?subUnion rdf:first ?property_owner . " +
" ?property rdfs:domain ?collection . " +
" ?property rdfs:range ?range . " +
" } " +
" } " +
" } " +
((rangeSuper != null)?
" ?range rdfs:subClassOf* <"+rangeSuper+"> ":"") +
" MINUS " +
" { " +
" <"+clazz+"> rdfs:subClassOf* ?other_restr . " +
" ?other_restr owl:onProperty ?property . " +
" ?other_restr owl:allValuesFrom ?other_range . " +
" FILTER( ?other_range != ?range ) . " +
" ?other_range rdfs:subClassOf+ ?range . " +
" } " +
" MINUS " +
" { " +
" <"+clazz+"> rdfs:subClassOf* ?other_prop_owner . " +
" ?property rdfs:domain ?other_prop_owner . " +
" ?property rdfs:range ?other_range . " +
" FILTER( ?other_range != ?range ) . " +
" ?other_range rdfs:subClassOf+ ?range . " +
" } " +
" } " +
" UNION " +
" { " +
" { " +
" { " +
" <"+clazz+"> rdfs:subClassOf* ?restriction . " +
" ?restriction owl:onProperty ?property . " +
" } " +
" UNION " +
" { " +
" <"+clazz+"> rdfs:subClassOf* ?property_owner . " +
" ?property rdfs:domain ?property_owner . " +
" } " +
" } " +
" MINUS " +
" { " +
" <"+clazz+"> rdfs:subClassOf* ?other_restr . " +
" ?other_restr owl:onProperty ?property . " +
" ?other_restr owl:allValuesFrom ?other_range . " +
" } " +
" MINUS " +
" { " +
" <"+clazz+"> rdfs:subClassOf* ?other_prop_owner . " +
" ?property rdfs:domain ?other_prop_owner . " +
" ?property rdfs:range ?other_range . " +
" } " +
" MINUS " +
" { " +
" <"+clazz+"> rdfs:subClassOf* ?other_prop_owner . " +
" ?collection owl:unionOf ?union . " +
" ?union rdf:rest* ?subUnion . " +
" ?subUnion rdf:first ?other_prop_owner . " +
" ?property rdfs:domain ?collection . " +
" ?property rdfs:range ?other_range . " +
" } " +
" } " +
" OPTIONAL " +
" { " +
" ?cardrestriction owl:onProperty ?property . " +
" ?cardrestriction owl:cardinality ?card . " +
" } " +
" } ";
// Execute the query and obtain results
QueryExecution qe = QueryExecutionFactory.create(queryString, Syntax.syntaxSPARQL_11, model);
// QueryExecution qe = QueryExecutionFactory.create(queryString, Syntax.syntaxSPARQL_11, dataset);
this.queryExecution = qe;
this.ontModel = model;
this.resultSet = qe.execSelect();
// Prepare the next
while (resultSet.hasNext()) {
QuerySolution row = resultSet.next();
PropertyDeclaration result = new PropertyDeclarationImpl();
RDFNode property = row.get("property");
if (property == null || !property.isResource() || property.asResource().getLocalName() == null) {
log.error("Found unparsable property " + property + " for querying property declaration");
continue;
}
result.setPropertyUri(property.asResource().getURI());
result.setPropertyName(property.asResource().getLocalName());
int cardinality = row.contains("card") ? row.get("card").asLiteral().getInt() : -1;
result.setCardinality(cardinality);
OntProperty ontProperty = ontModel.getOntProperty(property.asResource().getURI());
if(ontProperty == null) {
log.warn("Could not interpret " + property.asResource().getURI() + " as ont property, skipping this one");
continue;
}
String label = Language.getLabel(ontProperty);
if(label != null) {
result.setPropertyLabel(label);
}
result.setOwlFunctionalProperty(ontProperty.isFunctionalProperty());
RDFNode range = row.get("range");
if (range != null && range.isResource() && range.asResource().getLocalName() != null) {
result.setRangeUri(range.asResource().getURI());
result.setRangeName(range.asResource().getLocalName());
}
RDFNode propertyOwner = row.get("property_owner");
if (propertyOwner != null && propertyOwner.isResource()) {
result.setPropertyOwner(propertyOwner.asResource().getURI());
}
if(!resultCollection.containsKey(property.asResource().getURI())) {
resultCollection.put(property.asResource().getURI(), result);
} else {
// Choose which of the two to pick
// Prefer the same namespace between domain and range
Resource domain = new ResourceImpl(clazz);
if(range == null || !resultCollection.get(property.asResource().getURI()).hasRange()) {
log.warn("No way to choose from two property definitions for "+property.asResource().getURI()+", skipping one.");
continue;
}
boolean newDeclarationHasEqualNs = domain.getNameSpace().equals(range.asResource().getNameSpace());
boolean oldDeclarationHasEqualNs = domain.getNameSpace().equals(new ResourceImpl(resultCollection.get(property.asResource().getURI()).getRangeUri()).getNameSpace());
if(!oldDeclarationHasEqualNs && newDeclarationHasEqualNs) {
resultCollection.put(property.asResource().getURI(), result);
} else if(oldDeclarationHasEqualNs && !newDeclarationHasEqualNs) {
// keep the old one
} else {
log.warn("No way to choose from two property definitions for "+property.asResource().getURI()+", skipping one.");
}
}
}
queryExecution.close();
resultIterator = resultCollection.values().iterator();
}
@Override
public void close() {
}
@Override
public boolean hasNext() {
return resultIterator.hasNext();
}
@Override
public PropertyDeclaration next() {
return resultIterator.next();
}
@Override
public void remove() {
resultIterator.remove();
}
}
