| Total Complexity | 46 |
| Total Lines | 239 |
| Duplicated Lines | 0 % |
| Changes | 1 | ||
| Bugs | 0 | Features | 0 |
Complex classes like Smarty_Template_Cached often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Smarty_Template_Cached, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
||
| 17 | class Smarty_Template_Cached extends Smarty_Template_Resource_Base |
||
| 18 | { |
||
| 19 | /** |
||
| 20 | * Cache Is Valid |
||
| 21 | * |
||
| 22 | * @var boolean |
||
| 23 | */ |
||
| 24 | public $valid = null; |
||
| 25 | |||
| 26 | /** |
||
| 27 | * CacheResource Handler |
||
| 28 | * |
||
| 29 | * @var Smarty_CacheResource |
||
| 30 | */ |
||
| 31 | public $handler = null; |
||
| 32 | |||
| 33 | /** |
||
| 34 | * Template Cache Id (Smarty_Internal_Template::$cache_id) |
||
| 35 | * |
||
| 36 | * @var string |
||
| 37 | */ |
||
| 38 | public $cache_id = null; |
||
| 39 | |||
| 40 | /** |
||
| 41 | * saved cache lifetime in seconds |
||
| 42 | * |
||
| 43 | * @var integer |
||
| 44 | */ |
||
| 45 | public $cache_lifetime = 0; |
||
| 46 | |||
| 47 | /** |
||
| 48 | * Id for cache locking |
||
| 49 | * |
||
| 50 | * @var string |
||
| 51 | */ |
||
| 52 | public $lock_id = null; |
||
| 53 | |||
| 54 | /** |
||
| 55 | * flag that cache is locked by this instance |
||
| 56 | * |
||
| 57 | * @var bool |
||
| 58 | */ |
||
| 59 | public $is_locked = false; |
||
| 60 | |||
| 61 | /** |
||
| 62 | * Source Object |
||
| 63 | * |
||
| 64 | * @var Smarty_Template_Source |
||
| 65 | */ |
||
| 66 | public $source = null; |
||
| 67 | |||
| 68 | /** |
||
| 69 | * Nocache hash codes of processed compiled templates |
||
| 70 | * |
||
| 71 | * @var array |
||
| 72 | */ |
||
| 73 | public $hashes = array(); |
||
| 74 | |||
| 75 | /** |
||
| 76 | * Flag if this is a cache resource |
||
| 77 | * |
||
| 78 | * @var bool |
||
| 79 | */ |
||
| 80 | public $isCache = true; |
||
| 81 | |||
| 82 | /** |
||
| 83 | * create Cached Object container |
||
| 84 | * |
||
| 85 | * @param Smarty_Internal_Template $_template template object |
||
| 86 | * |
||
| 87 | * @throws \SmartyException |
||
| 88 | */ |
||
| 89 | public function __construct(Smarty_Internal_Template $_template) |
||
| 90 | { |
||
| 91 | $this->compile_id = $_template->compile_id; |
||
| 92 | $this->cache_id = $_template->cache_id; |
||
| 93 | $this->source = $_template->source; |
||
| 94 | if (!class_exists('Smarty_CacheResource', false)) { |
||
| 95 | include SMARTY_SYSPLUGINS_DIR . 'smarty_cacheresource.php'; |
||
| 96 | } |
||
| 97 | $this->handler = Smarty_CacheResource::load($_template->smarty); |
||
| 98 | } |
||
| 99 | |||
| 100 | /** |
||
| 101 | * @param Smarty_Internal_Template $_template |
||
| 102 | * |
||
| 103 | * @return Smarty_Template_Cached |
||
| 104 | */ |
||
| 105 | public static function load(Smarty_Internal_Template $_template) |
||
| 106 | { |
||
| 107 | $_template->cached = new Smarty_Template_Cached($_template); |
||
| 108 | $_template->cached->handler->populate($_template->cached, $_template); |
||
| 109 | // caching enabled ? |
||
| 110 | if (!$_template->caching || $_template->source->handler->recompiled |
||
| 111 | ) { |
||
| 112 | $_template->cached->valid = false; |
||
| 113 | } |
||
| 114 | return $_template->cached; |
||
| 115 | } |
||
| 116 | |||
| 117 | /** |
||
| 118 | * Render cache template |
||
| 119 | * |
||
| 120 | * @param \Smarty_Internal_Template $_template |
||
| 121 | * @param bool $no_output_filter |
||
| 122 | * |
||
| 123 | * @throws \Exception |
||
| 124 | */ |
||
| 125 | public function render(Smarty_Internal_Template $_template, $no_output_filter = true) |
||
| 144 | } |
||
| 145 | } |
||
| 146 | |||
| 147 | /** |
||
| 148 | * Check if cache is valid, lock cache if required |
||
| 149 | * |
||
| 150 | * @param \Smarty_Internal_Template $_template |
||
| 151 | * |
||
| 152 | * @return bool flag true if cache is valid |
||
| 153 | */ |
||
| 154 | public function isCached(Smarty_Internal_Template $_template) |
||
| 223 | } |
||
| 224 | |||
| 225 | /** |
||
| 226 | * Process cached template |
||
| 227 | * |
||
| 228 | * @param Smarty_Internal_Template $_template template object |
||
| 229 | * @param bool $update flag if called because cache update |
||
| 230 | */ |
||
| 231 | public function process(Smarty_Internal_Template $_template, $update = false) |
||
| 232 | { |
||
| 233 | if ($this->handler->process($_template, $this, $update) === false) { |
||
| 234 | $this->valid = false; |
||
| 235 | } |
||
| 236 | if ($this->valid) { |
||
| 237 | $this->processed = true; |
||
| 238 | } else { |
||
| 239 | $this->processed = false; |
||
| 240 | } |
||
| 241 | } |
||
| 242 | |||
| 243 | /** |
||
| 244 | * Read cache content from handler |
||
| 245 | * |
||
| 246 | * @param Smarty_Internal_Template $_template template object |
||
| 247 | * |
||
| 248 | * @return string|false content |
||
| 249 | */ |
||
| 250 | public function read(Smarty_Internal_Template $_template) |
||
| 256 | } |
||
| 257 | } |
||
| 258 |
If an expression can have both
false, andnullas possible values. It is generally a good practice to always use strict comparison to clearly distinguish between those two values.