reasoning.TestUtils.java Source code

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Here is the source code for reasoning.TestUtils.java

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/**
 * This file is part of combo-obda.
 *
 * combo-obda 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.
 *
 * combo-obda 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
 * combo-obda. If not, see <http://www.gnu.org/licenses/>.
 */
package reasoning;

import com.google.common.collect.HashMultiset;
import com.google.common.collect.Multiset;
import de.unibremen.informatik.tdki.combo.common.Tuple;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.ResultSetHandler;

/**
 *
 * @author nan Seylan
 */
public class TestUtils {

    public static <E> Multiset<Tuple<E>> getTuples(Connection connection, String query) {
        final Multiset<Tuple<E>> result = HashMultiset.create();
        QueryRunner qRunner = new QueryRunner();
        try {
            qRunner.query(connection, query, new ResultSetHandler() {

                @Override
                public Object handle(ResultSet rs) throws SQLException {
                    int columns = rs.getMetaData().getColumnCount();
                    while (rs.next()) {
                        Tuple<E> t = new Tuple<E>();
                        for (int i = 1; i <= columns; i++) {
                            t.add((E) rs.getObject(i));
                        }
                        result.add(t);
                    }
                    return null;
                }
            });
        } catch (SQLException ex) {
            throw new RuntimeException(ex);
        }
        return result;
    }
}