eu.europa.esig.dss.spi.client.jdbc.query.SqlSelectQuery Maven / Gradle / Ivy
/**
* DSS - Digital Signature Services
* Copyright (C) 2015 European Commission, provided under the CEF programme
*
* This file is part of the "DSS - Digital Signature Services" project.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
package eu.europa.esig.dss.spi.client.jdbc.query;
import eu.europa.esig.dss.spi.client.jdbc.record.SqlRecord;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Collection;
/**
* A select query containing logic to extract records from a {@code ResultSet}
*
*/
public abstract class SqlSelectQuery extends SqlQuery {
/**
* Default constructor
*
* @param queryString {@link String}
*/
protected SqlSelectQuery(String queryString) {
super(queryString);
}
/**
* Returns response from the given {@code ResultSet} row position
*
* @param rs {@link ResultSet} to get records from the provided position
* @return {@link SqlRecord}
* @throws SQLException if an error during the SQL request occurs
*/
protected abstract SqlRecord getRecord(ResultSet rs) throws SQLException;
/**
* Extracts a collection of {@code SqlRecord}s from {@code ResultSet}
*
* @param rs {@link ResultSet} result of the select query
* @return collection of {@link SqlRecord}s
* @throws SQLException if an error during the SQL request occurs
*/
public Collection getRecords(ResultSet rs) throws SQLException {
final Collection records = new ArrayList<>();
while (rs.next()) {
records.add(getRecord(rs));
}
return records;
}
}