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path: root/src/com/juick/server/TagQueries.java
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/*
 * Juick
 * Copyright (C) 2008-2011, Ugnich Anton
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.juick.server;

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

/**
 *
 * @author Ugnich Anton
 */
public class TagQueries {

    public static int getTagID(Connection sql, String tag, boolean autoCreate) {
        int tid = SQLHelpers.getInt(sql, "SELECT tag_id FROM tags WHERE name=?", tag, 0);

        if (tid == 0 && autoCreate) {
            PreparedStatement stmt = null;
            ResultSet rs = null;
            try {
                stmt = sql.prepareStatement("INSERT INTO tags(name) VALUES (?)", Statement.RETURN_GENERATED_KEYS);
                stmt.setString(1, tag);
                stmt.executeUpdate();
                rs = stmt.getGeneratedKeys();
                if (rs.first()) {
                    tid = rs.getInt(1);
                }
            } catch (SQLException e) {
                System.err.println(e);
            } finally {
                Utils.finishSQL(rs, stmt);
            }
        }

        return tid;
    }

    public static ArrayList<com.juick.Tag> getUserTagsAll(Connection sql, int uid) {
        ArrayList<com.juick.Tag> tags = new ArrayList<com.juick.Tag>();

        PreparedStatement stmt = null;
        ResultSet rs = null;
        try {
            stmt = sql.prepareStatement("SELECT tags.name,COUNT(messages.message_id) FROM (messages INNER JOIN messages_tags ON (messages.user_id=? AND messages.message_id=messages_tags.message_id)) INNER JOIN tags ON messages_tags.tag_id=tags.tag_id GROUP BY tags.tag_id ORDER BY tags.name ASC");
            stmt.setInt(1, uid);
            rs = stmt.executeQuery();
            rs.beforeFirst();
            while (rs.next()) {
                com.juick.Tag t = new com.juick.Tag();
                t.Name = rs.getString(1);
                t.UsageCnt = rs.getInt(2);
                tags.add(t);
            }
        } catch (SQLException e) {
            System.err.println(e);
        } finally {
            Utils.finishSQL(rs, stmt);
        }
        return tags;
    }
}