98 lines
2.6 KiB
PHP
98 lines
2.6 KiB
PHP
<?php
|
|
/**
|
|
* CChainedCacheDependency class file.
|
|
*
|
|
* @author Qiang Xue <qiang.xue@gmail.com>
|
|
* @link http://www.yiiframework.com/
|
|
* @copyright 2008-2013 Yii Software LLC
|
|
* @license http://www.yiiframework.com/license/
|
|
*/
|
|
|
|
/**
|
|
* CChainedCacheDependency represents a list of cache dependencies.
|
|
*
|
|
* If any of the dependencies reports a dependency change, CChainedCacheDependency
|
|
* will return true for the checking.
|
|
*
|
|
* To add dependencies to CChainedCacheDependency, use {@link getDependencies Dependencies}
|
|
* which gives a {@link CTypedList} instance and can be used like an array
|
|
* (see {@link CList} for more details}).
|
|
*
|
|
* @property CTypedList $dependencies List of dependency objects.
|
|
* @property boolean $hasChanged Whether the dependency is changed or not.
|
|
*
|
|
* @author Qiang Xue <qiang.xue@gmail.com>
|
|
* @package system.caching.dependencies
|
|
* @since 1.0
|
|
*/
|
|
class CChainedCacheDependency extends CComponent implements ICacheDependency
|
|
{
|
|
private $_dependencies=null;
|
|
|
|
/**
|
|
* Constructor.
|
|
* @param array $dependencies the dependencies to be added to this chain.
|
|
* @since 1.1.4
|
|
*/
|
|
public function __construct($dependencies=array())
|
|
{
|
|
if(!empty($dependencies))
|
|
$this->setDependencies($dependencies);
|
|
}
|
|
|
|
/**
|
|
* @return CTypedList list of dependency objects
|
|
*/
|
|
public function getDependencies()
|
|
{
|
|
if($this->_dependencies===null)
|
|
$this->_dependencies=new CTypedList('ICacheDependency');
|
|
return $this->_dependencies;
|
|
}
|
|
|
|
/**
|
|
* @param array $values list of dependency objects or configurations to be added to this chain.
|
|
* If a dependency is specified as a configuration, it must be an array that can be recognized
|
|
* by {@link YiiBase::createComponent}.
|
|
*/
|
|
public function setDependencies($values)
|
|
{
|
|
$dependencies=$this->getDependencies();
|
|
foreach($values as $value)
|
|
{
|
|
if(is_array($value))
|
|
$value=Yii::createComponent($value);
|
|
$dependencies->add($value);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Evaluates the dependency by generating and saving the data related with dependency.
|
|
*/
|
|
public function evaluateDependency()
|
|
{
|
|
if($this->_dependencies!==null)
|
|
{
|
|
foreach($this->_dependencies as $dependency)
|
|
$dependency->evaluateDependency();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Performs the actual dependency checking.
|
|
* This method returns true if any of the dependency objects
|
|
* reports a dependency change.
|
|
* @return boolean whether the dependency is changed or not.
|
|
*/
|
|
public function getHasChanged()
|
|
{
|
|
if($this->_dependencies!==null)
|
|
{
|
|
foreach($this->_dependencies as $dependency)
|
|
if($dependency->getHasChanged())
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
}
|