/**
 * Copyright 2013-2014 Guoqiang Chen, Shanghai, China. All rights reserved.
 *
 * Email: subchen@gmail.com
 * URL: http://subchen.github.io/
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package jetbrick.dao.orm.handlers;

import java.sql.ResultSet;
import java.sql.SQLException;
import jetbrick.dao.orm.ResultSetHandler;
import jetbrick.dao.orm.RowMapper;

public class SingleRowHandler<T> implements ResultSetHandler<T> {

    private RowMapper<T> mapper;

    public SingleRowHandler(RowMapper<T> mapper) {
        this.mapper = mapper;
    }

    @Override
    public T handle(ResultSet rs) throws SQLException {
        if (rs.next()) {
            return mapper.handle(rs);
        }
        return null;
    }
}