Abstract Class yii\mutex\DbMutex

所有类 | 属性 | 方法

继承	yii\mutex\DbMutex » yii\mutex\Mutex » yii\base\Component » yii\base\BaseObject
实现	yii\base\Configurable
子类	yii\mutex\MysqlMutex, yii\mutex\OracleMutex, yii\mutex\PgsqlMutex
可用版本自	2.0
源码	https://github.com/yiichina/yii2/blob/api/framework/mutex/DbMutex.php

DbMutex 是类的基类，它在实现互斥锁“锁定”机制时依赖于数据库。

参见 yii\mutex\Mutex.

公共属性

隐藏继承的属性

属性	类型	描述	被定义在
$autoRelease	boolean	Whether all locks acquired in this process (i.e. local locks) must be released automatically before finishing script execution.	yii\mutex\Mutex
$behaviors	yii\base\Behavior[]	List of behaviors attached to this component	yii\base\Component
$db	yii\db\Connection\|array\|string	数据库连接对象或数据库连接的应用程序组件ID。创建 Mutex 对象后，如果要更改此属性，则只应为其分配一个数据库连接对象。从版本 2.	yii\mutex\DbMutex

公共方法

隐藏继承的方法

方法	描述	被定义在
__call()	Calls the named method which is not a class method.	yii\base\Component
__clone()	This method is called after the object is created by cloning an existing one.	yii\base\Component
__construct()	Constructor.	yii\base\BaseObject
__get()	Returns the value of a component property.	yii\base\Component
__isset()	Checks if a property is set, i.e. defined and not null.	yii\base\Component
__set()	Sets the value of a component property.	yii\base\Component
__unset()	Sets a component property to be null.	yii\base\Component
acquire()	Acquires a lock by name.	yii\mutex\Mutex
attachBehavior()	Attaches a behavior to this component.	yii\base\Component
attachBehaviors()	Attaches a list of behaviors to the component.	yii\base\Component
behaviors()	Returns a list of behaviors that this component should behave as.	yii\base\Component
canGetProperty()	Returns a value indicating whether a property can be read.	yii\base\Component
canSetProperty()	Returns a value indicating whether a property can be set.	yii\base\Component
className()	Returns the fully qualified name of this class.	yii\base\BaseObject
detachBehavior()	Detaches a behavior from the component.	yii\base\Component
detachBehaviors()	Detaches all behaviors from the component.	yii\base\Component
ensureBehaviors()	Makes sure that the behaviors declared in behaviors() are attached to this component.	yii\base\Component
getBehavior()	Returns the named behavior object.	yii\base\Component
getBehaviors()	Returns all behaviors attached to this component.	yii\base\Component
hasEventHandlers()	Returns a value indicating whether there is any handler attached to the named event.	yii\base\Component
hasMethod()	Returns a value indicating whether a method is defined.	yii\base\Component
hasProperty()	Returns a value indicating whether a property is defined for this component.	yii\base\Component
init()	初始化基于通用数据库表的互斥锁的实现。	yii\mutex\DbMutex
off()	Detaches an existing event handler from this component.	yii\base\Component
on()	Attaches an event handler to an event.	yii\base\Component
release()	Releases acquired lock. This method will return false in case the lock was not found.	yii\mutex\Mutex
trigger()	Triggers an event.	yii\base\Component

受保护的方法

隐藏继承的方法

方法	描述	被定义在
acquireLock()	This method should be extended by a concrete Mutex implementations. Acquires lock by name.	yii\mutex\Mutex
releaseLock()	This method should be extended by a concrete Mutex implementations. Releases lock by given name.	yii\mutex\Mutex

属性详情

$db 公共属性

数据库连接对象或数据库连接的应用程序组件ID。创建 Mutex 对象后，如果要更改此属性，则只应为其分配一个数据库连接对象。从版本 2.0.2 开始，这也可以是用于创建对象的配置数组。

public yii\db\Connection|array|string $db = 'db'

方法详情

init() 公共方法

初始化基于通用数据库表的互斥锁的实现。

public void init()
throws	yii\base\InvalidConfigException	如果 $db 无效。