Abstract Class yii\caching\Dependency

Inheritance	yii\caching\Dependency » yii\base\Object
Implements	yii\base\Configurable
Subclasses	yii\caching\ChainedDependency, yii\caching\DbDependency, yii\caching\DbQueryDependency, yii\caching\ExpressionDependency, yii\caching\FileDependency, yii\caching\TagDependency
Available since version	2.0
Source Code	https://github.com/yiisoft/yii2/blob/master/framework/caching/Dependency.php

Dependency is the base class for cache dependency classes.

Child classes should override its generateDependencyData() for generating the actual dependency data.

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

Public Properties

Property	Type	Description	Defined By
$data	mixed	The dependency data that is saved in cache and later is compared with the latest dependency data.	yii\caching\Dependency
$reusable	boolean	Whether this dependency is reusable or not.	yii\caching\Dependency

Public Methods

Method	Description	Defined By
__call()	Calls the named method which is not a class method.	yii\base\Object
__construct()	Constructor.	yii\base\Object
__get()	Returns the value of an object property.	yii\base\Object
__isset()	Checks if a property is set, i.e. defined and not null.	yii\base\Object
__set()	Sets value of an object property.	yii\base\Object
__unset()	Sets an object property to null.	yii\base\Object
canGetProperty()	Returns a value indicating whether a property can be read.	yii\base\Object
canSetProperty()	Returns a value indicating whether a property can be set.	yii\base\Object
className()	Returns the fully qualified name of this class.	yii\base\Object
evaluateDependency()	Evaluates the dependency by generating and saving the data related with dependency.	yii\caching\Dependency
getHasChanged()	Returns a value indicating whether the dependency has changed.	yii\caching\Dependency
hasMethod()	Returns a value indicating whether a method is defined.	yii\base\Object
hasProperty()	Returns a value indicating whether a property is defined.	yii\base\Object
init()	Initializes the object.	yii\base\Object
isChanged()	Checks whether the dependency is changed	yii\caching\Dependency
resetReusableData()	Resets all cached data for reusable dependencies.	yii\caching\Dependency

Protected Methods

Method	Description	Defined By
generateDependencyData()	Generates the data needed to determine if dependency is changed.	yii\caching\Dependency
generateReusableHash()	Generates a unique hash that can be used for retrieving reusable dependency data.	yii\caching\Dependency

Property Details

$data public property

The dependency data that is saved in cache and later is compared with the latest dependency data.

public mixed $data = null

$reusable public property

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 boolean $reusable = false

Method Details