Browse Source

Merge pull request #343 from resurtm/fixes-145

Fixes #145. Reusable cache dependencies.
tags/2.0.0-beta
resurtm 12 years ago
parent
commit
e1ea91a775
  1. 49
      framework/yii/caching/Dependency.php

49
framework/yii/caching/Dependency.php

@ -25,6 +25,23 @@ abstract class Dependency extends \yii\base\Object
* latest dependency data. * latest dependency data.
*/ */
public $data; public $data;
/**
* @var boolean whether this dependency is reusable or not. True value means that dependent
* data for this cache dependency will be generated only once per request. This allows you
* to use the same cache dependency for multiple separate cache calls while generating the same
* page without an overhead of re-evaluating dependency data each time. Defaults to false.
*/
public $reusable = false;
/**
* @var array static storage of cached data for reusable dependencies.
*/
private static $_reusableData = array();
/**
* @var string a unique hash value for this cache dependency.
*/
private $_hash;
/** /**
* Evaluates the dependency by generating and saving the data related with dependency. * Evaluates the dependency by generating and saving the data related with dependency.
@ -32,7 +49,17 @@ abstract class Dependency extends \yii\base\Object
*/ */
public function evaluateDependency() public function evaluateDependency()
{ {
$this->data = $this->generateDependencyData(); if (!$this->reusable) {
$this->data = $this->generateDependencyData();
} else {
if ($this->_hash === null) {
$this->_hash = sha1(serialize($this));
}
if (!array_key_exists($this->_hash, self::$_reusableData)) {
self::$_reusableData[$this->_hash] = $this->generateDependencyData();
}
$this->data = self::$_reusableData[$this->_hash];
}
} }
/** /**
@ -40,7 +67,25 @@ abstract class Dependency extends \yii\base\Object
*/ */
public function getHasChanged() public function getHasChanged()
{ {
return $this->generateDependencyData() !== $this->data; if (!$this->reusable) {
return $this->generateDependencyData() !== $this->data;
} else {
if ($this->_hash === null) {
$this->_hash = sha1(serialize($this));
}
if (!array_key_exists($this->_hash, self::$_reusableData)) {
self::$_reusableData[$this->_hash] = $this->generateDependencyData();
}
return self::$_reusableData[$this->_hash] !== $this->_data;
}
}
/**
* Resets all cached data for reusable dependencies.
*/
public static function resetReusableData()
{
self::$_reusableData = array();
} }
/** /**

Loading…
Cancel
Save