CGlobalStateCacheDependency
| 包 | system.caching.dependencies |
|---|---|
| 继承 | class CGlobalStateCacheDependency » CCacheDependency » CComponent |
| 实现 | ICacheDependency |
| 可用自 | 1.0 |
| 源码 | framework/caching/dependencies/CGlobalStateCacheDependency.php |
CGlobalStateCacheDependency represents a dependency based on a global state value.
CGlobalStateCacheDependency checks if a global state is changed or not. If the global state is changed, the dependency is reported as changed. To specify which global state this dependency should check with, set stateName to the name of the global state.
CGlobalStateCacheDependency checks if a global state is changed or not. If the global state is changed, the dependency is reported as changed. To specify which global state this dependency should check with, set stateName to the name of the global state.
公共属性
| 属性 | 类型 | 描述 | 被定义在 |
|---|---|---|---|
| dependentData | mixed | the data used to determine if dependency has been changed. | CCacheDependency |
| hasChanged | boolean | whether the dependency has changed. | CCacheDependency |
| reuseDependentData | boolean | Whether this dependency is reusable or not. | CCacheDependency |
| stateName | string | the name of the global state whose value is to check if the dependency has changed. | CGlobalStateCacheDependency |
公共方法
| 方法 | 描述 | 被定义在 |
|---|---|---|
| __call() | Calls the named method which is not a class method. | CComponent |
| __construct() | Constructor. | CGlobalStateCacheDependency |
| __get() | Returns a property value, an event handler list or a behavior based on its name. | CComponent |
| __isset() | Checks if a property value is null. | CComponent |
| __set() | Sets value of a component property. | CComponent |
| __unset() | Sets a component property to be null. | CComponent |
| asa() | Returns the named behavior object. | CComponent |
| attachBehavior() | Attaches a behavior to this component. | CComponent |
| attachBehaviors() | Attaches a list of behaviors to the component. | CComponent |
| attachEventHandler() | Attaches an event handler to an event. | CComponent |
| canGetProperty() | Determines whether a property can be read. | CComponent |
| canSetProperty() | Determines whether a property can be set. | CComponent |
| detachBehavior() | Detaches a behavior from the component. | CComponent |
| detachBehaviors() | Detaches all behaviors from the component. | CComponent |
| detachEventHandler() | Detaches an existing event handler. | CComponent |
| disableBehavior() | Disables an attached behavior. | CComponent |
| disableBehaviors() | Disables all behaviors attached to this component. | CComponent |
| enableBehavior() | Enables an attached behavior. | CComponent |
| enableBehaviors() | Enables all behaviors attached to this component. | CComponent |
| evaluateDependency() | Evaluates the dependency by generating and saving the data related with dependency. | CCacheDependency |
| evaluateExpression() | Evaluates a PHP expression or callback under the context of this component. | CComponent |
| getDependentData() | Returns the data used to determine if dependency has been changed. This data is available after evaluateDependency is called. | CCacheDependency |
| getEventHandlers() | Returns the list of attached event handlers for an event. | CComponent |
| getHasChanged() | Returns whether the dependency has changed. | CCacheDependency |
| hasEvent() | Determines whether an event is defined. | CComponent |
| hasEventHandler() | Checks whether the named event has attached handlers. | CComponent |
| hasProperty() | Determines whether a property is defined. | CComponent |
| raiseEvent() | Raises an event. | CComponent |
| resetReusableData() | Resets cached data for reusable dependencies. | CCacheDependency |
受保护的方法
| 方法 | 描述 | 被定义在 |
|---|---|---|
| generateDependentData() | Generates the data needed to determine if dependency has been changed. | CGlobalStateCacheDependency |
属性详情
stateName
属性
public string $stateName;
the name of the global state whose value is to check if the dependency has changed.
方法详情
__construct()
方法
|
public void __construct(string $name=NULL)
| ||
| $name | string | the name of the global state |
源码： framework/caching/dependencies/CGlobalStateCacheDependency.php#36 (显示)
public function __construct($name=null)
{
$this->stateName=$name;
}
Constructor.
generateDependentData()
方法
|
protected mixed generateDependentData()
| ||
| {return} | mixed | the data needed to determine if dependency has been changed. |
源码： framework/caching/dependencies/CGlobalStateCacheDependency.php#47 (显示)
protected function generateDependentData()
{
if($this->stateName!==null)
return Yii::app()->getGlobalState($this->stateName);
else
throw new CException(Yii::t('yii','CGlobalStateCacheDependency.stateName cannot be empty.'));
}
Generates the data needed to determine if dependency has been changed. This method returns the value of the global state.