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
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
|
<?php
/**
* Elgg annotations
* Functions to manage object annotations.
*
* @package Elgg
* @subpackage Core
* @license http://www.gnu.org/licenses/old-licenses/gpl-2.0.html GNU Public License version 2
* @author Marcus Povey <marcus@dushka.co.uk>
* @copyright Curverider Ltd 2008
* @link http://elgg.org/
*/
/**
* @class ElggAnnotation
* @author Marcus Povey <marcus@dushka.co.uk>
*/
class ElggAnnotation
{
/**
* This contains the site's main properties (id, etc)
* @var array
*/
private $attributes;
/**
* Construct a new site object, optionally from a given id value or db row.
*
* @param mixed $id
*/
function __construct($id = null)
{
if (!empty($id)) {
if ($id instanceof stdClass)
$annotation = $id;
else
$annotation = get_annotation($id);
if ($annotation) {
$objarray = (array) $annotation;
foreach($objarray as $key => $value) {
$this->attributes[$key] = $value;
}
}
}
}
function __get($name) {
if (isset($attributes[$name])) {
// Sanitise outputs if required
if ($name=='value')
{
switch ($attributes['value_type'])
{
case 'integer' : return (int)$attributes['value'];
case 'tag' :
case 'text' :
case 'file' : return sanitise_string($attributes['value']);
default : throw new InstallationException("Type {$attributes['value_type']} is not supported. This indicates an error in your installation, most likely caused by an incomplete upgrade.");
}
}
return $attributes[$name];
}
return null;
}
function __set($name, $value) {
$this->attributes[$name] = $value;
return true;
}
/**
* Return the owner of this annotation.
*
* @return mixed
*/
function getOwner() { return get_user($this->owner_id); }
function save()
{
if (isset($this->id))
return update_annotation($this->id, $this->name, $this->value, $this->value_type, $this->owner_id, $this->access_id);
else
{
$this->id = create_annotation($this->object_id, $this->object_type, $this->name, $this->value, $this->value_type, $this->owner_id, $this->access_id);
if (!$this->id) throw new IOException("Unable to save new ElggAnnotation");
return $this->id;
}
}
/**
* Delete a given site.
*/
function delete() { return delete_annotation($this->id); }
}
/**
* Get a specific annotation.
*
* @param int $annotation_id
*/
function get_annotation($annotation_id)
{
global $CONFIG;
$annotation_id = (int) $annotation_id;
$access = get_access_list();
return get_data_row("select o.* from {$CONFIG->dbprefix}annotations where id=$annotation_id and (o.access_id in {$access} or (o.access_id = 0 and o.owner_id = {$_SESSION['id']}))");
}
/**
* Get a list of annotations for a given object/user/annotation type.
*
* @param int $object_id
* @param string $object_type
* @param int $owner_id
* @param string $order_by
* @param int $limit
* @param int $offset
*/
function get_annotations($object_id = 0, $object_type = "", $owner_id = 0, $order_by = "created desc", $limit = 10, $offset = 0)
{
global $CONFIG;
$object_id = (int)$object_id;
$object_type = sanitise_string(trim($object_type));
$name = sanitise_string(trim($name));
$value = sanitise_string(trim($value));
$owner_id = (int)$owner_id;
$limit = (int)$limit;
$offset = (int)$offset;
// Construct query
$where = array();
if ($object_id != 0)
$where[] = "object_id=$object_id";
if ($object_type != "")
$where[] = "object_type='$object_type'";
if ($owner_id != 0)
$where[] = "owner_id=$owner_id";
// add access controls
$access = get_access_list();
$where[] = "(access_id in {$access} or (access_id = 0 and owner_id = {$_SESSION['id']}))";
// construct query.
$query = "SELECT * from {$CONFIG->dbprefix}annotations where ";
for ($n = 0; $n < count($where); $n++)
{
if ($n > 0) $query .= " and ";
$query .= $where[$n];
}
return get_data($query);
}
/**
* Create a new annotation.
*
* @param int $object_id
* @param string $object_type
* @param string $name
* @param string $value
* @param string $value_type
* @param int $owner_id
* @param int $access_id
*/
function create_annotation($object_id, $object_type, $name, $value, $value_type, $owner_id, $access_id = 0)
{
global $CONFIG;
$object_id = (int)$object_id;
$object_type = sanitise_string(trim($object_type));
$name = sanitise_string(trim($name));
$value = sanitise_string(trim($value));
$value_type = sanitise_string(trim($value_type));
$owner_id = (int)$owner_id;
$access_id = (int)$access_id;
return insert_data("INSERT into {$CONFIG->dbprefix}annotations (object_id, object_type, name, value, value_type, owner_id, created, access_id) VALUES ($object_id,'$object_type','$name','$value','$value_type', $owner_id, $access_id)");
}
/**
* Update an annotation.
*
* @param int $annotation_id
* @param string $name
* @param string $value
* @param string $value_type
* @param int $owner_id
* @param int $access_id
*/
function update_annotation($annotation_id, $name, $value, $value_type, $owner_id, $access_id)
{
global $CONFIG;
$annotation_id = (int)$annotation_id;
$name = sanitise_string(trim($name));
$value = sanitise_string(trim($value));
$value_type = sanitise_string(trim($value_type));
$owner_id = (int)$owner_id;
$access_id = (int)$access_id;
$access = get_access_list();
return update_data("UPDATE {$CONFIG->dbprefix}annotations set value='$value', value_type='$value_type', access_id=$access_id where id=$annotation_id and name='$name' and (access_id in {$access} or (access_id = 0 and owner_id = {$_SESSION['id']}))");
}
/**
* Delete a given annotation.
*
* @param $id int The id
*/
function delete_annotation($id)
{
global $CONFIG;
$id = (int)$id;
$access = get_access_list();
return delete_data("DELETE from {$CONFIG->dbprefix}annotations where id=$id and (access_id in {$access} or (access_id = 0 and owner_id = {$_SESSION['id']}))");
}
?>
|
