1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
|
/*
* Juick
* Copyright (C) 2008-2013, 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 com.juick.Group;
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 GroupsQueries {
public static ArrayList<com.juick.Group> getGroups(Connection sql, int uid) {
ArrayList<com.juick.Group> groups = new ArrayList<Group>();
PreparedStatement stmt = null;
ResultSet rs = null;
try {
stmt = sql.prepareStatement("SELECT groups.group_id,groups.name,COUNT(groups_users.user_id) FROM groups LEFT JOIN groups_users USING(group_id) WHERE groups.user_id=? GROUP BY group_id");
stmt.setInt(1, uid);
rs = stmt.executeQuery();
rs.beforeFirst();
while (rs.next()) {
com.juick.Group g = new com.juick.Group();
g.GID = rs.getInt(1);
g.Name = rs.getString(2);
g.UsersCnt = rs.getInt(3);
groups.add(g);
}
} catch (SQLException e) {
System.err.println(e);
} finally {
Utils.finishSQL(rs, stmt);
}
return groups;
}
public static int getGroupID(Connection sql, int uid, String name) {
int gid = 0;
PreparedStatement stmt = null;
ResultSet rs = null;
try {
stmt = sql.prepareStatement("SELECT group_id FROM groups WHERE user_id=? AND name=?");
stmt.setInt(1, uid);
stmt.setString(2, name);
rs = stmt.executeQuery();
if (rs.first()) {
gid = rs.getInt(1);
}
} catch (SQLException e) {
System.err.println(e);
} finally {
Utils.finishSQL(rs, stmt);
}
if (gid == 0) {
try {
stmt = sql.prepareStatement("INSERT INTO groups(user_id,name) VALUES (?)", Statement.RETURN_GENERATED_KEYS);
stmt.setString(1, name);
stmt.executeUpdate();
rs = stmt.getGeneratedKeys();
if (rs.first()) {
gid = rs.getInt(1);
}
} catch (SQLException e) {
System.err.println(e);
} finally {
Utils.finishSQL(rs, stmt);
}
}
return gid;
}
public static boolean removeGroupUser(Connection sql, int gid, int uid) {
boolean ret = false;
PreparedStatement stmt = null;
try {
stmt = sql.prepareStatement("DELETE FROM groups_users WHERE group_id=? AND user_id=?");
stmt.setInt(1, gid);
stmt.setInt(2, uid);
if (stmt.executeUpdate() > 0) {
ret = true;
}
} catch (SQLException e) {
System.err.println(e);
} finally {
Utils.finishSQL(null, stmt);
}
if (ret) {
int cnt = SQLHelpers.getInt(sql, "SELECT COUNT(*) FROM groups_users WHERE group_id=?", gid, -1);
if (cnt == 0) {
try {
stmt = sql.prepareStatement("DELETE FROM groups WHERE group_id=?");
stmt.setInt(1, gid);
stmt.executeUpdate();
} catch (SQLException e) {
System.err.println(e);
} finally {
Utils.finishSQL(null, stmt);
}
}
}
return ret;
}
public static boolean addGroupUser(Connection sql, int gid, int uid) {
boolean ret = false;
PreparedStatement stmt = null;
try {
stmt = sql.prepareStatement("INSERT INTO groups_users(group_id,user_id) VALUES (?,?)");
stmt.setInt(1, gid);
stmt.setInt(2, uid);
if (stmt.executeUpdate() > 0) {
ret = true;
}
} catch (SQLException e) {
System.err.println(e);
} finally {
Utils.finishSQL(null, stmt);
}
return ret;
}
}
|
