Class yii\caching\ChainedDependency

继承yii\caching\ChainedDependency » yii\caching\Dependency » yii\base\BaseObject
实现yii\base\Configurable
可用自版本2.0
源代码 https://github.com/yiisoft/yii2/blob/master/framework/caching/ChainedDependency.php

ChainedDependency represents a dependency which is composed of a list of other dependencies.

When $dependOnAll is true, if any of the dependencies has changed, this dependency is considered changed; When $dependOnAll is false, if one of the dependencies has NOT changed, this dependency is considered NOT changed.

For more details and usage information on Cache, see the guide article on caching.

公共属性

隐藏继承的属性

属性类型描述定义在
$data mixed The dependency data that is saved in cache and later is compared with the latest dependency data. yii\caching\Dependency
$dependOnAll boolean Whether this dependency is depending on every dependency in $dependencies. yii\caching\ChainedDependency
$dependencies yii\caching\Dependency[] List of dependencies that this dependency is composed of. yii\caching\ChainedDependency
$reusable boolean Whether this dependency is reusable or not. yii\caching\Dependency

公共方法

隐藏继承的方法

方法描述定义在
__call() 调用不是类方法的已命名方法. yii\base\BaseObject
__construct() 构造函数. yii\base\BaseObject
__get() 返回对象属性的值. yii\base\BaseObject
__isset() 检查属性是否已设置, 即已定义且不为null. yii\base\BaseObject
__set() 设置对象属性的值. yii\base\BaseObject
__unset() 将对象属性设置为null. yii\base\BaseObject
canGetProperty() 返回一个值, 指示属性是否可读. yii\base\BaseObject
canSetProperty() 返回一个值, 指示属性是否可写. yii\base\BaseObject
className() 返回此类的完全限定名称. yii\base\BaseObject
evaluateDependency() Evaluates the dependency by generating and saving the data related with dependency. yii\caching\ChainedDependency
getHasChanged() Returns a value indicating whether the dependency has changed. yii\caching\Dependency
hasMethod() 返回一个值, 指示方法是否已定义. yii\base\BaseObject
hasProperty() 返回一个值, 指示属性是否已定义. yii\base\BaseObject
init() 初始化对象. yii\base\BaseObject
isChanged() Checks whether the dependency is changed. yii\caching\ChainedDependency
resetReusableData() Resets all cached data for reusable dependencies. yii\caching\Dependency

受保护的方法

隐藏继承的方法

方法描述定义在
generateDependencyData() Generates the data needed to determine if dependency has been changed. yii\caching\ChainedDependency
generateReusableHash() Generates a unique hash that can be used for retrieving reusable dependency data. yii\caching\Dependency

属性详情

$dependOnAll public 属性

Whether this dependency is depending on every dependency in $dependencies. Defaults to true, meaning if any of the dependencies has changed, this dependency is considered changed. When it is set false, it means if one of the dependencies has NOT changed, this dependency is considered NOT changed.

public boolean $dependOnAll true
$dependencies public 属性

List of dependencies that this dependency is composed of. Each array element must be a dependency object.

方法详情

evaluateDependency() public 方法

Evaluates the dependency by generating and saving the data related with dependency.

public void evaluateDependency ( $cache )
$cache yii\caching\CacheInterface

The cache component that is currently evaluating this dependency

generateDependencyData() protected 方法

Generates the data needed to determine if dependency has been changed.

This method does nothing in this class.

protected mixed generateDependencyData ( $cache )
$cache yii\caching\CacheInterface

The cache component that is currently evaluating this dependency

return mixed

The data needed to determine if dependency has been changed.

isChanged() public 方法

Checks whether the dependency is changed.

public boolean isChanged ( $cache )
$cache yii\caching\CacheInterface

The cache component that is currently evaluating this dependency

return boolean

Whether the dependency has changed.