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Sparql query improvments.

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ass92 2010-12-07 17:48:05 +00:00
parent 297805e5bc
commit 6e7afb976d
1 changed files with 30 additions and 59 deletions
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89
webapp/src/edu/cornell/mannlib/vitro/webapp/dao/jena/IndividualSDB.java
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@ -26,6 +26,7 @@ import com.hp.hpl.jena.ontology.OntResource;
import com.hp.hpl.jena.query.Dataset;
import com.hp.hpl.jena.query.QueryExecutionFactory;
import com.hp.hpl.jena.query.QueryFactory;
import com.hp.hpl.jena.query.QuerySolution;
import com.hp.hpl.jena.query.ResultSet;
import com.hp.hpl.jena.query.ResultSetFormatter;
import com.hp.hpl.jena.rdf.model.Literal;
@ -645,22 +646,21 @@ public class IndividualSDB extends IndividualImpl implements Individual {
}
private void doUrlAndAnchor() {
this.dataset.getLock().enterCriticalSection(Lock.READ);
Model tempModel = ModelFactory.createDefaultModel();
OntModel ontModel = ModelFactory.createOntologyModel(OntModelSpec.OWL_MEM);
try {
if (webappDaoFactory.getJenaBaseDao().PRIMARY_LINK != null) {
String listPropertyValues =
"CONSTRUCT {<" + this.individualURI + "> <" + webappDaoFactory.getJenaBaseDao().PRIMARY_LINK + "> ?values}" +
"SELECT ?values" +
"WHERE{ GRAPH ?g { <" + this.individualURI + "> <" + webappDaoFactory.getJenaBaseDao().PRIMARY_LINK + "> ?values} }";
tempModel = QueryExecutionFactory.create(QueryFactory.create(listPropertyValues), dataset).execConstruct();
ontModel.add(tempModel.listStatements());
OntResource res = ontModel.createOntResource(this.individualURI);
Iterator links = res.listPropertyValues(webappDaoFactory.getJenaBaseDao().PRIMARY_LINK);
if (links.hasNext()) {
ResultSet links = QueryExecutionFactory.create(QueryFactory.create(listPropertyValues), dataset).execSelect();
QuerySolution result = null;
if (links.hasNext()) {
result = links.next();
try {
com.hp.hpl.jena.ontology.Individual linkInd = ((com.hp.hpl.jena.ontology.Individual)((Resource)links.next()).as(com.hp.hpl.jena.ontology.Individual.class));
com.hp.hpl.jena.ontology.Individual linkInd = ((com.hp.hpl.jena.ontology.Individual)((Resource)result.get("values")).as(com.hp.hpl.jena.ontology.Individual.class));
if (webappDaoFactory.getJenaBaseDao().LINK_ANCHOR != null) {
try {
Literal l = (Literal) linkInd.getPropertyValue(webappDaoFactory.getJenaBaseDao().LINK_ANCHOR);
@ -814,26 +814,21 @@ public class IndividualSDB extends IndividualImpl implements Individual {
List<Individual> relatedIndividuals = new ArrayList<Individual>();
dataset.getLock().enterCriticalSection(Lock.READ);
Model tempModel = ModelFactory.createDefaultModel();
OntModel ontModel = ModelFactory.createOntologyModel(OntModelSpec.OWL_MEM);
try {
String valuesOfProperty =
"CONSTRUCT{<" + this.individualURI + "> <" + propertyURI + "> ?object}" +
"SELECT ?object" +
"WHERE{ GRAPH ?g { <" + this.individualURI + "> <" + propertyURI + "> ?object} }";
tempModel = QueryExecutionFactory.create(QueryFactory.create(valuesOfProperty), dataset).execConstruct();
ontModel.add(tempModel.listStatements());
OntResource ontRes = ontModel.createOntResource(this.individualURI);
NodeIterator values = ontRes.listPropertyValues(ontRes.getModel().getProperty(propertyURI));
ResultSet values = QueryExecutionFactory.create(QueryFactory.create(valuesOfProperty), dataset).execSelect();
QuerySolution result = null;
while (values.hasNext()) {
RDFNode value = values.nextNode();
result = values.next();
RDFNode value = result.get("object");
if (value.canAs(OntResource.class)) {
relatedIndividuals.add(
new IndividualSDB(((OntResource) value.as(OntResource.class)).getURI(), dataset, webappDaoFactory) );
}
}
} finally {
tempModel.close();
ontModel.close();
dataset.getLock().leaveCriticalSection();
}
return relatedIndividuals;
@ -846,24 +841,19 @@ public class IndividualSDB extends IndividualImpl implements Individual {
}
dataset.getLock().enterCriticalSection(Lock.READ);
Model tempModel = ModelFactory.createDefaultModel();
OntModel ontModel = ModelFactory.createOntologyModel(OntModelSpec.OWL_MEM);
try {
String valueOfProperty =
"CONSTRUCT{<" + this.individualURI + "> <" + propertyURI + "> ?object}" +
"SELECT ?object" +
"WHERE{ GRAPH ?g { <" + this.individualURI + "> <" + propertyURI + "> ?object} }";
tempModel = QueryExecutionFactory.create(QueryFactory.create(valueOfProperty), dataset).execConstruct();
ontModel.add(tempModel.listStatements());
OntResource ontRes = ontModel.createOntResource(this.individualURI);
RDFNode value = ontRes.getPropertyValue(ontRes.getModel().getProperty(propertyURI));
ResultSet results = QueryExecutionFactory.create(QueryFactory.create(valueOfProperty), dataset).execSelect();
QuerySolution result = results.next();
RDFNode value = result.get("object");
if (value != null && value.canAs(OntResource.class)) {
return new IndividualSDB(((OntResource) value.as(OntResource.class)).getURI(), dataset, webappDaoFactory);
} else {
return null;
}
} finally {
tempModel.close();
ontModel.close();
dataset.getLock().leaveCriticalSection();
}
}
@ -1121,39 +1111,20 @@ public class IndividualSDB extends IndividualImpl implements Individual {
@Override
public boolean isMemberOfClassProhibitedFromSearch(ProhibitedFromSearch pfs) {
this.dataset.getLock().enterCriticalSection(Lock.READ);
Model tempModel = ModelFactory.createDefaultModel();
OntModel ontModel = ModelFactory.createOntologyModel(OntModelSpec.OWL_MEM);
try {
String getTypes =
"CONSTRUCT{ <" + this.individualURI + "> <" + RDF.type + "> ?types }\n" +
"WHERE{ GRAPH ?g { <" + this.individualURI +"> <" +RDF.type+ "> ?types \n" +
"} } \n";
tempModel = QueryExecutionFactory.create(QueryFactory.create(getTypes), dataset).execConstruct();
ontModel.add(tempModel.listStatements());
OntResource ontRes = ontModel.createOntResource(this.individualURI);
StmtIterator stmtIt = ontRes.listProperties(RDF.type);
try {
while(stmtIt.hasNext()) {
Statement stmt = stmtIt.nextStatement();
if (stmt.getObject().isURIResource()) {
String typeURI = ((Resource)stmt.getObject()).getURI();
if (pfs.isClassProhibited(typeURI)) {
return false;
}
}
}
} finally {
stmtIt.close();
}
return false;
} finally {
tempModel.close();
ontModel.close();
this.dataset.getLock().leaveCriticalSection();
}
}
List<VClass> types = getVClasses(false);
Iterator<VClass> itr = types.iterator();
while(itr.hasNext()) {
String typeURI = itr.next().getURI();
if (pfs.isClassProhibited(typeURI)) {
return true;
}
}
return false;
}
/**
* Overriding the base method so that we can do the sorting by arbitrary property here. An
* IndividualSDB has a reference back to the model; everything else is just a dumb bean (for now).