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CFileCacheDependency

Package system.caching.dependencies
Inheritance class CFileCacheDependency » CCacheDependency » CComponent
Implements ICacheDependency
Since 1.0
Version $Id$
Source Code framework/caching/dependencies/CFileCacheDependency.php
CFileCacheDependency represents a dependency based on a file's last modification time.

CFileCacheDependency performs dependency checking based on the last modification time of the file specified via fileName. The dependency is reported as unchanged if and only if the file's last modification time remains unchanged.

Public Properties

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PropertyTypeDescriptionDefined By
dependentData mixed the data used to determine if dependency has been changed. CCacheDependency
fileName string the name of the file whose last modification time is used to check if the dependency has been changed. CFileCacheDependency
hasChanged boolean whether the dependency has changed. CCacheDependency

Public Methods

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MethodDescriptionDefined By
__call() Calls the named method which is not a class method. CComponent
__construct() Constructor. CFileCacheDependency
__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
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

Protected Methods

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MethodDescriptionDefined By
generateDependentData() Generates the data needed to determine if dependency has been changed. CFileCacheDependency

Property Details

fileName property
public string $fileName;

the name of the file whose last modification time is used to check if the dependency has been changed.

Method Details

__construct() method
public void __construct(string $fileName=NULL)
$fileName string name of the file whose change is to be checked.
Source Code: framework/caching/dependencies/CFileCacheDependency.php#36 (show)
public function __construct($fileName=null)
{
    $this->fileName=$fileName;
}

Constructor.

generateDependentData() method
protected mixed generateDependentData()
{return} mixed the data needed to determine if dependency has been changed.
Source Code: framework/caching/dependencies/CFileCacheDependency.php#46 (show)
protected function generateDependentData()
{
    if($this->fileName!==null)
        return @filemtime($this->fileName);
    else
        throw new CException(Yii::t('yii','CFileCacheDependency.fileName cannot be empty.'));
}

Generates the data needed to determine if dependency has been changed. This method returns the file's last modification time.