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1 | <?php |
2 | /* | |
3 | +--------------------------------------------------------------------+ | |
39de6fd5 | 4 | | CiviCRM version 4.6 | |
6a488035 | 5 | +--------------------------------------------------------------------+ |
06b69b18 | 6 | | Copyright CiviCRM LLC (c) 2004-2014 | |
6a488035 TO |
7 | +--------------------------------------------------------------------+ |
8 | | This file is a part of CiviCRM. | | |
9 | | | | |
10 | | CiviCRM is free software; you can copy, modify, and distribute it | | |
11 | | under the terms of the GNU Affero General Public License | | |
12 | | Version 3, 19 November 2007 and the CiviCRM Licensing Exception. | | |
13 | | | | |
14 | | CiviCRM is distributed in the hope that it will be useful, but | | |
15 | | WITHOUT ANY WARRANTY; without even the implied warranty of | | |
16 | | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | | |
17 | | See the GNU Affero General Public License for more details. | | |
18 | | | | |
19 | | You should have received a copy of the GNU Affero General Public | | |
20 | | License and the CiviCRM Licensing Exception along | | |
21 | | with this program; if not, contact CiviCRM LLC | | |
22 | | at info[AT]civicrm[DOT]org. If you have questions about the | | |
23 | | GNU Affero General Public License or the licensing of CiviCRM, | | |
24 | | see the CiviCRM license FAQ at http://civicrm.org/licensing | | |
25 | +--------------------------------------------------------------------+ | |
26 | */ | |
27 | ||
28 | /** | |
29 | * | |
30 | * @package CRM | |
06b69b18 | 31 | * @copyright CiviCRM LLC (c) 2004-2014 |
6a488035 TO |
32 | * $Id$ |
33 | * | |
34 | */ | |
35 | ||
36 | /** | |
37 | * This caching provider stores all cached items as a "group" in the | |
38 | * "civicrm_cache" table. The entire 'group' may be prefetched when | |
39 | * instantiating the cache provider. | |
40 | */ | |
41 | class CRM_Utils_Cache_SqlGroup implements CRM_Utils_Cache_Interface { | |
42 | ||
43 | /** | |
44 | * The host name of the memcached server | |
45 | * | |
46 | * @var string | |
47 | */ | |
48 | protected $group; | |
49 | ||
50 | /** | |
51 | * @var int $componentID The optional component ID (so componenets can share the same name space) | |
52 | */ | |
53 | protected $componentID; | |
f813f78e | 54 | |
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55 | /** |
56 | * @var array in-memory cache to optimize redundant get()s | |
57 | */ | |
58 | protected $frontCache; | |
59 | ||
60 | /** | |
61 | * Constructor | |
62 | * | |
77855840 TO |
63 | * @param array $config |
64 | * An array of configuration params. | |
6a488035 TO |
65 | * - group: string |
66 | * - componentID: int | |
67 | * - prefetch: bool, whether to preemptively read the entire cache group; default: TRUE | |
68 | * | |
77b97be7 EM |
69 | * @throws RuntimeException |
70 | * @return \CRM_Utils_Cache_SqlGroup | |
6a488035 | 71 | */ |
00be9182 | 72 | public function __construct($config) { |
6a488035 TO |
73 | if (isset($config['group'])) { |
74 | $this->group = $config['group']; | |
0db6c3e1 TO |
75 | } |
76 | else { | |
6a488035 TO |
77 | throw new RuntimeException("Cannot construct SqlGroup cache: missing group"); |
78 | } | |
79 | if (isset($config['componentID'])) { | |
80 | $this->componentID = $config['componentID']; | |
0db6c3e1 TO |
81 | } |
82 | else { | |
6a488035 TO |
83 | $this->componentID = NULL; |
84 | } | |
85 | $this->frontCache = array(); | |
86 | if (CRM_Utils_Array::value('prefetch', $config, TRUE)) { | |
87 | $this->prefetch(); | |
88 | } | |
89 | } | |
90 | ||
5bc392e6 EM |
91 | /** |
92 | * @param string $key | |
93 | * @param mixed $value | |
94 | */ | |
00be9182 | 95 | public function set($key, &$value) { |
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96 | CRM_Core_BAO_Cache::setItem($value, $this->group, $key, $this->componentID); |
97 | $this->frontCache[$key] = $value; | |
98 | } | |
99 | ||
5bc392e6 EM |
100 | /** |
101 | * @param string $key | |
102 | * | |
103 | * @return mixed | |
104 | */ | |
00be9182 | 105 | public function get($key) { |
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106 | if (! array_key_exists($key, $this->frontCache)) { |
107 | $this->frontCache[$key] = CRM_Core_BAO_Cache::getItem($this->group, $key, $this->componentID); | |
108 | } | |
109 | return $this->frontCache[$key]; | |
110 | } | |
111 | ||
5bc392e6 EM |
112 | /** |
113 | * @param $key | |
114 | * @param null $default | |
115 | * | |
116 | * @return mixed | |
117 | */ | |
00be9182 | 118 | public function getFromFrontCache($key, $default = NULL) { |
20b015e1 TO |
119 | return CRM_Utils_Array::value($key, $this->frontCache, $default); |
120 | } | |
121 | ||
5bc392e6 EM |
122 | /** |
123 | * @param string $key | |
124 | */ | |
00be9182 | 125 | public function delete($key) { |
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126 | CRM_Core_BAO_Cache::deleteGroup($this->group, $key); |
127 | unset($this->frontCache[$key]); | |
128 | } | |
129 | ||
00be9182 | 130 | public function flush() { |
6a488035 TO |
131 | CRM_Core_BAO_Cache::deleteGroup($this->group); |
132 | $this->frontCache = array(); | |
133 | } | |
134 | ||
00be9182 | 135 | public function prefetch() { |
6a488035 TO |
136 | $this->frontCache = CRM_Core_BAO_Cache::getItems($this->group, $this->componentID); |
137 | } | |
138 | } |