@Override
public void newIndividual(String individualURI, String individualTypeURI, String graphURI)
throws RDFServiceException {
StringBuffer containsQuery = new StringBuffer("ASK { \n");
if (graphURI != null) {
containsQuery.append(" GRAPH <" + graphURI + "> { ");
}
containsQuery.append("<");
containsQuery.append(individualURI);
containsQuery.append("> ");
containsQuery.append("?p ?o");
if (graphURI != null) {
containsQuery.append(" } \n");
}
containsQuery.append("\n}");
if (sparqlAskQuery(containsQuery.toString())) {
throw new RDFServiceException("individual already exists");
} else {
Triple triple =
new Triple(
Node.createURI(individualURI), RDF.type.asNode(), Node.createURI(individualTypeURI));
// addTriple(triple, graphURI);
ChangeSet cs = this.manufactureChangeSet();
cs.addAddition(
new ByteArrayInputStream(sparqlTriple(triple).getBytes()),
ModelSerializationFormat.N3,
graphURI);
changeSetUpdate(cs);
}
}
private String doRename(String oldNamespace, String newNamespace) {
String uri = null;
String result = null;
Integer counter = 0;
Boolean namespacePresent = false;
RDFService rdfService = ModelAccess.on(getServletContext()).getRDFService();
try {
Model baseOntModel =
RDFServiceGraph.createRDFServiceModel(new RDFServiceGraph(rdfService, ABOX_ASSERTIONS));
OntModel ontModel = ModelAccess.on(getServletContext()).getOntModel();
List<String> urisToChange = new LinkedList<String>();
ontModel.enterCriticalSection(Lock.READ);
try {
Iterator<Individual> indIter = ontModel.listIndividuals();
while (indIter.hasNext()) {
Individual ind = indIter.next();
String namespace = ind.getNameSpace();
if (namespace != null) {
if (oldNamespace.equals(namespace)) {
uri = ind.getURI();
urisToChange.add(uri);
namespacePresent = true;
}
}
}
} finally {
ontModel.leaveCriticalSection();
}
if (!namespacePresent) {
result = "no resources renamed";
return result;
}
for (String oldURIStr : urisToChange) {
long time1 = System.currentTimeMillis();
Resource res = baseOntModel.getResource(oldURIStr);
long time2 = System.currentTimeMillis();
String newURIStr = null;
Pattern p = Pattern.compile(oldNamespace);
String candidateString = res.getURI();
Matcher matcher = p.matcher(candidateString);
newURIStr = matcher.replaceFirst(newNamespace);
long time3 = System.currentTimeMillis();
log.debug("time to get new uri: " + Long.toString(time3 - time2));
log.debug("Renaming " + oldURIStr + " to " + newURIStr);
String whereClause =
"} WHERE { \n"
+ " GRAPH <"
+ ABOX_ASSERTIONS
+ "> { \n"
+ " { <"
+ oldURIStr
+ "> ?p <"
+ oldURIStr
+ "> } \n "
+ " UNION \n"
+ " { <"
+ oldURIStr
+ "> ?q ?o } \n "
+ " UNION \n"
+ " { ?s ?r <"
+ oldURIStr
+ "> } \n"
+ " } \n"
+ "}";
String removeQuery =
"CONSTRUCT { \n"
+ " <"
+ oldURIStr
+ "> ?p <"
+ oldURIStr
+ "> . \n "
+ " <"
+ oldURIStr
+ "> ?q ?o . \n "
+ " ?s ?r <"
+ oldURIStr
+ "> \n"
+ whereClause;
String addQuery =
"CONSTRUCT { \n"
+ " <"
+ newURIStr
+ "> ?p <"
+ newURIStr
+ "> . \n "
+ " <"
+ newURIStr
+ "> ?q ?o . \n "
+ " ?s ?r <"
+ newURIStr
+ "> \n"
+ whereClause;
try {
ChangeSet cs = rdfService.manufactureChangeSet();
cs.addAddition(
rdfService.sparqlConstructQuery(addQuery, RDFService.ModelSerializationFormat.N3),
RDFService.ModelSerializationFormat.N3,
ABOX_ASSERTIONS);
cs.addRemoval(
rdfService.sparqlConstructQuery(removeQuery, RDFService.ModelSerializationFormat.N3),
RDFService.ModelSerializationFormat.N3,
ABOX_ASSERTIONS);
rdfService.changeSetUpdate(cs);
} catch (RDFServiceException e) {
throw new RuntimeException(e);
}
long time4 = System.currentTimeMillis();
log.debug(" time to rename : " + Long.toString(time4 - time3));
log.debug(" time for one resource: " + Long.toString(time4 - time1));
counter++;
}
result = counter.toString() + " resources renamed";
return result;
} finally {
if (rdfService != null) {
rdfService.close();
}
}
}
