ru.org.linux.spring.dao.DeleteInfoDao.java Source code

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Here is the source code for ru.org.linux.spring.dao.DeleteInfoDao.java

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/*
 * Copyright 1998-2012 Linux.org.ru
 *    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 ru.org.linux.spring.dao;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.RowMapper;
import org.springframework.stereotype.Repository;
import ru.org.linux.site.DeleteInfo;
import ru.org.linux.site.DeleteInfoStat;
import ru.org.linux.user.User;

import javax.sql.DataSource;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.List;

/**
 *       
 */
@Repository
public class DeleteInfoDao {
    private JdbcTemplate jdbcTemplate;
    private static final String QUERY_DELETE_INFO = "SELECT reason,delby as userid, deldate, bonus FROM del_info WHERE msgid=?";
    private static final String QUERY_DELETE_INFO_FOR_UPDATE = "SELECT reason,delby as userid, deldate, bonus FROM del_info WHERE msgid=? FOR UPDATE";
    private static final String INSERT_DELETE_INFO = "INSERT INTO del_info (msgid, delby, reason, deldate, bonus) values(?,?,?, CURRENT_TIMESTAMP, ?)";

    @Autowired
    public void setJdbcTemplate(DataSource dataSource) {
        jdbcTemplate = new JdbcTemplate(dataSource);
    }

    /**
     * ,     ?
     * @param id id ? ??
     * @return ?   ?
     */
    public DeleteInfo getDeleteInfo(int id) {
        return getDeleteInfo(id, false);
    }

    /**
     * ,     ?
     * @param id id ? ??
     * @param forUpdate  ?     (SELECT ... FOR UPDATE)
     * @return ?   ?
     */
    public DeleteInfo getDeleteInfo(int id, boolean forUpdate) {
        List<DeleteInfo> list = jdbcTemplate.query(forUpdate ? QUERY_DELETE_INFO_FOR_UPDATE : QUERY_DELETE_INFO,
                new RowMapper<DeleteInfo>() {
                    @Override
                    public DeleteInfo mapRow(ResultSet resultSet, int i) throws SQLException {
                        Integer bonus = resultSet.getInt("bonus");
                        if (resultSet.wasNull()) {
                            bonus = null;
                        }

                        return new DeleteInfo(resultSet.getInt("userid"), resultSet.getString("reason"),
                                resultSet.getTimestamp("deldate"), bonus);
                    }
                }, id);

        if (list.isEmpty()) {
            return null;
        } else {
            return list.get(0);
        }
    }

    public void insert(int msgid, User deleter, String reason, int scoreBonus) {
        jdbcTemplate.update(INSERT_DELETE_INFO, msgid, deleter.getId(), reason, scoreBonus);
    }

    public List<DeleteInfoStat> getRecentStats() {
        return jdbcTemplate.query(
                "select * from( select reason, count(*), sum(bonus) from del_info where deldate>CURRENT_TIMESTAMP-'1 day'::interval and bonus is not null group by reason) as s where sum!=0 order by reason",
                new RowMapper<DeleteInfoStat>() {
                    @Override
                    public DeleteInfoStat mapRow(ResultSet rs, int rowNum) throws SQLException {
                        return new DeleteInfoStat(rs.getString("reason"), rs.getInt("count"), rs.getInt("sum"));
                    }
                });
    }
}