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If a class changes classgroups, all members of that class will now be updated in the search. NIHVIVO-2933

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briancaruso 2011-07-15 20:35:50 +00:00
parent 1459228d5a
commit 14bcdbfa21
2 changed files with 217 additions and 0 deletions
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66
webapp/src/edu/cornell/mannlib/vitro/webapp/search/indexing/AdditionalURIsForClassGroupChanges.java Normal file
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/* $This file is distributed under the terms of the license in /doc/license.txt$ */
/**
*
*/
package edu.cornell.mannlib.vitro.webapp.search.indexing;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import com.hp.hpl.jena.ontology.OntModel;
import com.hp.hpl.jena.rdf.model.Statement;
import com.hp.hpl.jena.rdf.model.StmtIterator;
import com.hp.hpl.jena.shared.Lock;
import com.hp.hpl.jena.vocabulary.RDF;
import edu.cornell.mannlib.vitro.webapp.dao.VitroVocabulary;
import edu.cornell.mannlib.vitro.webapp.search.beans.AdditionalURIsToIndex;
/**
* If a class changes classgroups, then all members of that class
* will have to be update in the search since the serach include
* the clasgroup membership of all individuals.
*
* Ex. when a statement like:
* sub='http://vivoweb.org/ontology/core#Summer'
* pred='http://vitro.mannlib.cornell.edu/ns/vitro/0.7#inClassGroup'
* obj='http://vivoweb.org/ontology#vitroClassGrouppeople'
* changes, all members of the class core:Summer need to be update so they get the new classgroup values.
*/
public class AdditionalURIsForClassGroupChanges implements
AdditionalURIsToIndex {
private OntModel model;
public AdditionalURIsForClassGroupChanges(OntModel model) {
this.model = model;
}
@Override
public List<String> findAdditionalURIsToIndex(Statement stmt) {
if( stmt != null
&& VitroVocabulary.IN_CLASSGROUP.equals( stmt.getPredicate().getURI() )
&& stmt.getSubject() != null ){
// its a classgroup membership change for a class,
// update all individuals from the class.
List<String> uris = new ArrayList<String>();
model.enterCriticalSection(Lock.READ);
try{
StmtIterator iter = model.listStatements(null, RDF.type, stmt.getSubject());
while( iter.hasNext() ){
Statement typeStmt = iter.nextStatement();
if( typeStmt != null && typeStmt.getSubject().isURIResource() ){
uris.add(typeStmt.getSubject().getURI());
}
}
}finally{
model.leaveCriticalSection();
}
return uris;
}else{
return Collections.emptyList();
}
}
}