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VClassGroupCache updates on class name changes NIHVIVO-2934

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briancaruso 2011-07-15 19:06:39 +00:00
parent 7f8db83ec1
commit 0cd6c1227f
2 changed files with 127 additions and 18 deletions
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43
webapp/src/edu/cornell/mannlib/vitro/webapp/dao/jena/VClassGroupCache.java
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@ -16,11 +16,13 @@ import javax.servlet.ServletContextListener;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import com.hp.hpl.jena.ontology.Individual;
import com.hp.hpl.jena.ontology.OntModel;
import com.hp.hpl.jena.rdf.listeners.StatementListener;
import com.hp.hpl.jena.rdf.model.ResourceFactory;
import com.hp.hpl.jena.rdf.model.Statement;
import com.hp.hpl.jena.shared.Lock;
import com.hp.hpl.jena.vocabulary.OWL;
import com.hp.hpl.jena.vocabulary.RDF;
import com.hp.hpl.jena.vocabulary.RDFS;
@ -208,6 +210,24 @@ public class VClassGroupCache {
return groups;
}
protected static boolean isClassNameChange(Statement stmt, OntModel jenaOntModel) {
// Check if the stmt is a rdfs:label change and that the
// subject is an owl:Class.
if( RDFS.label.equals( stmt.getPredicate() )) {
jenaOntModel.enterCriticalSection(Lock.READ);
try{
return jenaOntModel.contains(
ResourceFactory.createStatement(
ResourceFactory.createResource(stmt.getSubject().getURI()),
RDF.type,
OWL.Class));
}finally{
jenaOntModel.leaveCriticalSection();
}
}else{
return false;
}
}
/* ******************** RebuildGroupCacheThread **************** */
@ -310,7 +330,7 @@ public class VClassGroupCache {
}
/* ****************** Jena Model Change Listener***************************** */
private class VClassGroupCacheChangeListener extends StatementListener {
protected class VClassGroupCacheChangeListener extends StatementListener {
public void addedStatement(Statement stmt) {
checkAndDoUpdate(stmt);
}
@ -332,26 +352,13 @@ public class VClassGroupCache {
requestCacheUpdate();
} else if(VitroVocabulary.DISPLAY_RANK.equals(stmt.getPredicate().getURI())){
requestCacheUpdate();
} else if( isVClassGroupNameChange(stmt) ) {
requestCacheUpdate();
}
}
protected boolean isVClassGroupNameChange(Statement stmt) {
// Check if the stmt is a rdfs:label change and that the
// subject is a VClassGroup.
if( RDFS.label.equals( stmt.getPredicate() )) {
} else {
OntModel jenaOntModel = ModelContext.getJenaOntModel(context);
jenaOntModel.enterCriticalSection(Lock.READ);
try{
return jenaOntModel.contains(stmt.getSubject(), RDF.type, ResourceFactory.createResource(VitroVocabulary.CLASSGROUP));
}finally{
jenaOntModel.leaveCriticalSection();
if( isClassNameChange(stmt, jenaOntModel) ) {
requestCacheUpdate();
}
}else{
return false;
}
}
}
}
/* ******************** ServletContextListener **************** */