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QueryResult.java
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QueryResult.java
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/**
* Copyright (C) 2020 Czech Technical University in Prague
*
* This program is free software: you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details. You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package cz.cvut.kbss.ontodriver.sesame.connector;
import org.eclipse.rdf4j.query.BindingSet;
import org.eclipse.rdf4j.query.QueryEvaluationException;
import org.eclipse.rdf4j.query.TupleQueryResult;
import org.eclipse.rdf4j.repository.RepositoryConnection;
import org.eclipse.rdf4j.repository.RepositoryException;
import java.util.List;
/**
* This class wraps the Sesame TupleQueryResult returned by QueryExecutor to be
* able to close the repository connection once the result is closed.
*
*/
class QueryResult implements TupleQueryResult {
private final TupleQueryResult result;
private final RepositoryConnection connection;
QueryResult(TupleQueryResult result, RepositoryConnection connection) {
this.result = result;
this.connection = connection;
}
@Override
public void close() throws QueryEvaluationException {
result.close();
try {
connection.close();
} catch (RepositoryException e) {
throw new QueryEvaluationException(e);
}
}
@Override
public boolean hasNext() throws QueryEvaluationException {
return result.hasNext();
}
@Override
public BindingSet next() throws QueryEvaluationException {
return result.next();
}
@Override
public void remove() throws QueryEvaluationException {
result.remove();
}
@Override
public List<String> getBindingNames() throws QueryEvaluationException {
return result.getBindingNames();
}
}