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SparqlQueryFactory.java
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SparqlQueryFactory.java
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/**
* Copyright (C) 2016 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.jopa.query.sparql;
import cz.cvut.kbss.jopa.model.QueryImpl;
import cz.cvut.kbss.jopa.model.TypedQueryImpl;
import cz.cvut.kbss.jopa.query.QueryParser;
import cz.cvut.kbss.jopa.sessions.ConnectionWrapper;
import cz.cvut.kbss.jopa.sessions.QueryFactory;
import cz.cvut.kbss.jopa.sessions.UnitOfWorkImpl;
import cz.cvut.kbss.jopa.utils.ErrorUtils;
import java.util.Objects;
public class SparqlQueryFactory implements QueryFactory {
private final UnitOfWorkImpl uow;
private final ConnectionWrapper connection;
private final QueryParser queryParser;
public SparqlQueryFactory(UnitOfWorkImpl uow, ConnectionWrapper connection) {
assert uow != null;
assert connection != null;
this.uow = uow;
this.connection = connection;
this.queryParser = new SparqlQueryParser();
}
@Override
public QueryImpl createNativeQuery(String sparql) {
Objects.requireNonNull(sparql);
final QueryImpl q = new QueryImpl(queryParser.parseQuery(sparql), connection);
q.useBackupOntology(uow.useBackupOntologyForQueryProcessing());
return q;
}
@Override
public <T> TypedQueryImpl<T> createNativeQuery(String sparql, Class<T> resultClass) {
Objects.requireNonNull(sparql, ErrorUtils.getNPXMessageSupplier("sparql"));
Objects.requireNonNull(resultClass, ErrorUtils.getNPXMessageSupplier("resultClass"));
final TypedQueryImpl<T> tq = new TypedQueryImpl<>(queryParser.parseQuery(sparql), resultClass, connection, uow);
tq.setUnitOfWork(uow);
tq.useBackupOntology(uow.useBackupOntologyForQueryProcessing());
return tq;
}
@Override
public QueryImpl createQuery(String query) {
Objects.requireNonNull(query);
// We do not support any more abstract syntax, yet
return createNativeQuery(query);
}
@Override
public <T> TypedQueryImpl<T> createQuery(String query, Class<T> resultClass) {
Objects.requireNonNull(query, ErrorUtils.getNPXMessageSupplier("query"));
Objects.requireNonNull(resultClass, ErrorUtils.getNPXMessageSupplier("resultClass"));
// We do not support any more abstract syntax, yet
return createNativeQuery(query, resultClass);
}
@Override
public QueryImpl createNamedQuery(String name) {
final String query = uow.getNamedQueryManager().getQuery(name);
return createNativeQuery(query);
}
@Override
public <T> TypedQueryImpl<T> createNamedQuery(String name, Class<T> resultClass) {
final String query = uow.getNamedQueryManager().getQuery(name);
return createNativeQuery(query, resultClass);
}
}