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
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
|
<?php
namespace ORM;
use Database;
use PDOStatement;
abstract class Repository {
protected $Database;
protected $entities = [];
abstract public static function getTableName(): string;
abstract public static function getClassName(): string;
public function __construct(Database $Database) {
$this->Database = $Database;
}
#===============================================================================
# Fetch entity from a PDOStatement result
#===============================================================================
protected function fetchEntity(PDOStatement $Statement): ?EntityInterface {
if($Entity = $Statement->fetchObject(static::getClassName())) {
$this->storeInstance($Entity->getID(), $Entity);
return $Entity;
}
return NULL;
}
#===============================================================================
# Fetch multiple entities from a PDOStatement result
#===============================================================================
protected function fetchEntities(PDOStatement $Statement): array {
if($entities = $Statement->fetchAll($this->Database::FETCH_CLASS, static::getClassName())) {
$this->storeMultipleInstances($entities);
return $entities;
}
return [];
}
#===============================================================================
# Adds an entity to the runtime cache
#===============================================================================
protected function storeInstance(int $identifier, EntityInterface $Entity) {
return $this->entities[$identifier] = $Entity;
}
#===============================================================================
# Adds an array of entities to the runtime cache
#===============================================================================
protected function storeMultipleInstances(array $entities) {
foreach($entities as $Entity) {
$this->storeInstance($Entity->getID(), $Entity);
}
return $entities;
}
#===============================================================================
# Gets an entity from the runtime cache
#===============================================================================
protected function fetchInstance($identifier) {
return $this->entities[$identifier] ?? FALSE;
}
#===============================================================================
# Removes an entity from the runtime cache
#===============================================================================
protected function removeInstance($identifier) {
if(isset($this->entities[$identifier])) {
unset($this->entities[$identifier]);
}
}
#===========================================================================
# Insert entity
#===========================================================================
public function insert(EntityInterface $Entity): bool {
$attributes = $Entity->getFilteredAttributes();
foreach($attributes as $field => $value) {
$fields[] = $field;
$values[] = '?';
}
$fields = implode(', ', $fields ?? []);
$values = implode(', ', $values ?? []);
$query = 'INSERT INTO %s (%s) VALUES(%s)';
$query = sprintf($query, static::getTableName(), $fields, $values);
$Statement = $this->Database->prepare($query);
return $Statement->execute(array_values($attributes));
}
#===========================================================================
# Update entity
#===========================================================================
public function update(EntityInterface $Entity): bool {
$attributes = $Entity->getFilteredAttributes();
foreach($attributes as $field => $value) {
$params[] = "$field = ?";
}
$params = implode(', ', $params ?? []);
$query = 'UPDATE %s SET %s WHERE id = '.intval($Entity->getID());
$query = sprintf($query, static::getTableName(), $params);
$Statement = $this->Database->prepare($query);
return $Statement->execute(array_values($attributes));
}
#===========================================================================
# Delete entity
#===========================================================================
public function delete(EntityInterface $Entity): bool {
$query = 'DELETE FROM %s WHERE id = ?';
$query = sprintf($query, static::getTableName());
$Statement = $this->Database->prepare($query);
return $Statement->execute([$Entity->getID()]);
}
#===========================================================================
# Find entity based on primary key
#===========================================================================
public function find($id): ?EntityInterface {
if($Entity = $this->fetchInstance($id)) {
return $Entity;
}
return $this->findBy('id', $id);
}
#===============================================================================
# Find entity based on specific field comparison
#===============================================================================
public function findBy(string $field, $value): ?EntityInterface {
$query = 'SELECT * FROM %s WHERE %s = ?';
$query = sprintf($query, static::getTableName(), $field);
$Statement = $this->Database->prepare($query);
$Statement->execute([$value]);
return $this->fetchEntity($Statement);
}
#===============================================================================
# Find previous entity
#===============================================================================
public function findPrev(EntityInterface $Entity): ?EntityInterface {
$query = 'SELECT * FROM %s WHERE time_insert < ? ORDER BY time_insert DESC LIMIT 1';
$query = sprintf($query, static::getTableName());
$Statement = $this->Database->prepare($query);
$Statement->execute([$Entity->get('time_insert')]);
return $this->fetchEntity($Statement);
}
#===============================================================================
# Find next entity
#===============================================================================
public function findNext(EntityInterface $Entity): ?EntityInterface {
$query = 'SELECT * FROM %s WHERE time_insert > ? ORDER BY time_insert ASC LIMIT 1';
$query = sprintf($query, static::getTableName());
$Statement = $this->Database->prepare($query);
$Statement->execute([$Entity->get('time_insert')]);
return $this->fetchEntity($Statement);
}
#===========================================================================
# Find last (which means the newest) entity
#===========================================================================
public function getLast(): ?EntityInterface {
$query = 'SELECT * FROM %s ORDER BY time_insert DESC LIMIT 1';
$query = sprintf($query, static::getTableName());
$Statement = $this->Database->query($query);
return $this->fetchEntity($Statement);
}
#===========================================================================
# Get entity count
#===========================================================================
public function getCount(array $filter = []): int {
$wheres = [];
$params = [];
if(!empty($filter)) {
foreach($filter as $column => $value) {
if($value === NULL) {
$wheres[] = "$column IS NULL";
} else {
$wheres[] = "$column = ?";
$params[] = $value;
}
}
$where = 'WHERE '.implode(' AND ', $wheres);
}
$query = 'SELECT COUNT(id) FROM %s %s';
$query = sprintf($query, static::getTableName(), $where ?? '');
$Statement = $this->Database->prepare($query);
$Statement->execute($params);
return $Statement->fetchColumn();
}
#===========================================================================
# Get paginated entity list
#===========================================================================
public function getPaginated(string $order, int $limit, int $offset = 0): array {
return $this->getAll([], $order, $limit, $offset);
}
#===========================================================================
# Get all entities
#===========================================================================
public function getAll(array $filter = [], string $order = null, int $limit = null, int $offset = 0): array {
$select = 'SELECT * FROM '.static::getTableName();
$wheres = [];
$params = [];
if(!empty($filter)) {
foreach($filter as $column => $value) {
if($value === NULL) {
$wheres[] = "$column IS NULL";
} else {
$wheres[] = "$column = ?";
$params[] = $value;
}
}
$where = 'WHERE '.implode(' AND ', $wheres);
}
if($order) {
$order = "ORDER BY $order";
}
if($limit) {
$limit = "LIMIT $offset,$limit";
}
$query = "$select %s %s %s";
$query = sprintf($query, $where ?? '', $order ?? '', $limit ?? '');
$Statement = $this->Database->prepare($query);
$Statement->execute($params);
return $this->fetchEntities($Statement);
}
}
|
