package org.ontoware.rdf2go.impl.jena;
import org.ontoware.aifbcommons.collection.ClosableIterator;
import org.ontoware.rdf2go.model.Statement;
import com.hp.hpl.jena.graph.Triple;
/**
* Define an Iterator over Statements, building the Statements from Jena
* Triples.
*/
public class TripleIterator implements ClosableIterator<Statement> {
private com.hp.hpl.jena.util.iterator.ClosableIterator<?> it;
private long modelModificationCountAtCreationTime;
private ModelImplJena modelImplJena;
public TripleIterator(com.hp.hpl.jena.util.iterator.ClosableIterator<?> it,
long modelModificationCountAtCreationTime, ModelImplJena jenaModel) {
this.it = it;
this.modelModificationCountAtCreationTime = modelModificationCountAtCreationTime;
this.modelImplJena = jenaModel;
}
@Override
public boolean hasNext() {
assert this.modelImplJena.getModificationCount() == this.modelModificationCountAtCreationTime : "concurrent modification for iterator ("
+ this.modelModificationCountAtCreationTime
+ " but model is "
+ this.modelImplJena.getModificationCount() + ")";
return this.it.hasNext();
}
@Override
public Statement next() {
assert this.modelImplJena.getModificationCount() == this.modelModificationCountAtCreationTime;
Triple t = (Triple)this.it.next();
return new StatementJena29Impl(this.modelImplJena, t.getSubject(), t.getPredicate(), t
.getObject());
}
@Override
public void remove() {
// it.remove();
assert this.modelImplJena.getModificationCount() == this.modelModificationCountAtCreationTime;
this.it.remove();
}
@Override
public void close() {
this.it.close();
}
}