Abstract Class yii\mutex\DbMutex
| Inheritance | yii\mutex\DbMutex » yii\mutex\Mutex » yii\base\Component » yii\base\BaseObject |
|---|---|
| Implements | yii\base\Configurable |
| Subclasses | yii\mutex\MysqlMutex, yii\mutex\OracleMutex, yii\mutex\PgsqlMutex |
| Available since version | 2.0 |
| Source Code | https://github.com/yiisoft/yii2/blob/master/framework/mutex/DbMutex.php |
DbMutex is the base class for classes, which relies on database while implementing mutex "lock" mechanism.
See also yii\mutex\Mutex.
Public Properties
| Property | Type | Description | Defined By |
|---|---|---|---|
| $autoRelease | boolean | Whether all locks acquired in this process (i.e. local locks) must be released automatically before finishing script execution. | yii\mutex\Mutex |
| $db | yii\db\Connection|array|string | The DB connection object or the application component ID of the DB connection. | yii\mutex\DbMutex |
Public Methods
| Method | Description | Defined By |
|---|---|---|
| __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() | Initializes generic database table based mutex implementation. | yii\mutex\DbMutex |
| isAcquired() | Checks if a lock is currently acquired | yii\mutex\Mutex |
| 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 |
Protected Methods
| Method | Description | Defined By |
|---|---|---|
| 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 |
Property Details
The DB connection object or the application component ID of the DB connection. After the Mutex object is created, if you want to change this property, you should only assign it with a DB connection object. Starting from version 2.0.2, this can also be a configuration array for creating the object.
Method Details
Initializes generic database table based mutex implementation.
| public void init ( ) | ||
| throws | yii\base\InvalidConfigException | if $db is invalid. |
|---|---|---|