ca.qc.adinfo.rouge.social.db.SocialDb.java Source code

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Here is the source code for ca.qc.adinfo.rouge.social.db.SocialDb.java

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/*
 * Copyright [2011] [ADInfo, Alexandre Denault]
 *
 * 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 ca.qc.adinfo.rouge.social.db;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Collection;

import org.apache.commons.dbutils.DbUtils;
import org.apache.log4j.Logger;

import ca.qc.adinfo.rouge.server.DBManager;

public class SocialDb {

    private static Logger log = Logger.getLogger(SocialDb.class);

    public static boolean addFriend(DBManager dbManager, long userId, long friendId) {

        Connection connection = null;
        PreparedStatement stmt = null;
        ResultSet rs = null;
        String sql = null;

        sql = "INSERT INTO rouge_social_friends (`user_id`, `friend_user_id`) VALUES (?, ?)";

        try {
            connection = dbManager.getConnection();
            stmt = connection.prepareStatement(sql);

            stmt.setLong(1, userId);
            stmt.setLong(2, friendId);

            int ret = stmt.executeUpdate();

            if (ret < 1) {
                return false;
            }

            stmt.setLong(1, friendId);
            stmt.setLong(2, userId);

            ret = stmt.executeUpdate();

            return (ret > 0);

        } catch (SQLException e) {
            log.error(stmt);
            log.error(e);
            return false;

        } finally {

            DbUtils.closeQuietly(rs);
            DbUtils.closeQuietly(stmt);
            DbUtils.closeQuietly(connection);
        }
    }

    public static boolean deleteFriend(DBManager dbManager, long userId, long friendId) {

        Connection connection = null;
        PreparedStatement stmt = null;
        ResultSet rs = null;
        String sql = null;

        sql = "DELETE FROM rouge_social_friends " + "WHERE (`user_id` = ? AND `friend_user_id` = ?) "
                + "OR (`user_id` = ? AND `friend_user_id` = ?)";

        try {
            connection = dbManager.getConnection();
            stmt = connection.prepareStatement(sql);

            stmt.setLong(1, userId);
            stmt.setLong(2, friendId);
            stmt.setLong(3, friendId);
            stmt.setLong(4, userId);

            int ret = stmt.executeUpdate();

            return (ret > 0);

        } catch (SQLException e) {
            log.error(stmt);
            log.error(e);
            return false;

        } finally {

            DbUtils.closeQuietly(rs);
            DbUtils.closeQuietly(stmt);
            DbUtils.closeQuietly(connection);
        }
    }

    public static Collection<Long> getFriends(DBManager dbManager, long userId) {

        Collection<Long> friends = new ArrayList<Long>();

        Connection connection = null;
        PreparedStatement stmt = null;
        ResultSet rs = null;

        String sql = "SELECT `friend_user_id` FROM rouge_social_friends WHERE `user_id` = ? ";

        try {
            connection = dbManager.getConnection();
            stmt = connection.prepareStatement(sql);
            stmt.setLong(1, userId);

            rs = stmt.executeQuery();

            while (rs.next()) {
                friends.add(rs.getLong("friend_user_id"));
            }

            return friends;

        } catch (SQLException e) {
            log.error(stmt);
            log.error(e);
            return null;

        } finally {

            DbUtils.closeQuietly(rs);
            DbUtils.closeQuietly(stmt);
            DbUtils.closeQuietly(connection);
        }
    }

}