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<?php |
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/** |
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* TUser class file. |
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* |
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* @author Qiang Xue <[email protected]> |
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* @link https://github.com/pradosoft/prado |
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* @license https://github.com/pradosoft/prado/blob/master/LICENSE |
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* @package Prado\Security |
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*/ |
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namespace Prado\Security; |
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use Prado\TPropertyValue; |
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/** |
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* TUser class |
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* |
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* TUser implements basic user functionality for a Prado application. |
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* To get the name of the user, use {@link getName Name} property. |
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* The property {@link getIsGuest IsGuest} tells if the user a guest/anonymous user. |
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* To obtain or test the roles that the user is in, use property |
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* {@link getRoles Roles} and call {@link isInRole()}, respectively. |
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* |
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* TUser is meant to be used together with {@link IUserManager}. |
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* |
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* @author Qiang Xue <[email protected]> |
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* @package Prado\Security |
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* @since 3.0 |
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*/ |
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class TUser extends \Prado\TComponent implements IUser |
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{ |
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/** |
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* @var array persistent state |
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*/ |
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private $_state; |
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/** |
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* @var bool whether user state is changed |
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*/ |
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private $_stateChanged = false; |
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/** |
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* @var IUserManager user manager |
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*/ |
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private $_manager; |
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/** |
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* TUser auto listen to global events. |
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* |
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* @return bool returns whether or not to listen. |
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*/ |
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public function getAutoGlobalListen() |
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{ |
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return true; |
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} |
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/** |
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* Constructor. |
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* @param IUserManager $manager user manager |
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*/ |
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public function __construct(IUserManager $manager) |
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{ |
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$this->_state = []; |
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$this->_manager = $manager; |
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$this->setName($manager->getGuestName()); |
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parent::__construct(); |
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} |
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/** |
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* @return IUserManager user manager |
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*/ |
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public function getManager() |
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{ |
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return $this->_manager; |
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} |
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/** |
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* @return string username, defaults to empty string. |
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*/ |
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public function getName() |
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{ |
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return $this->getState('Name', ''); |
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} |
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/** |
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* @param string $value username |
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*/ |
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public function setName($value) |
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{ |
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$this->setState('Name', $value, ''); |
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} |
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/** |
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* @return bool if the user is a guest, defaults to true. |
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*/ |
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public function getIsGuest() |
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{ |
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return $this->getState('IsGuest', true); |
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} |
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/** |
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* @param bool $value if the user is a guest |
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*/ |
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public function setIsGuest($value) |
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{ |
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if ($isGuest = TPropertyValue::ensureBoolean($value)) { |
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$this->setName($this->_manager->getGuestName()); |
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$this->setRoles([]); |
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} |
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$this->setState('IsGuest', $isGuest); |
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} |
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/** |
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* @return array list of roles that the user is of |
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*/ |
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public function getRoles() |
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{ |
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return $this->getState('Roles', []); |
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} |
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/** |
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* @param array|string $value list of roles that the user is of. If it is a string, roles are assumed by separated by comma |
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*/ |
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public function setRoles($value) |
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{ |
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if (is_array($value)) { |
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$this->setState('Roles', $value, []); |
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} else { |
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$roles = []; |
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foreach (explode(',', $value) as $role) { |
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if (($role = trim($role)) !== '') { |
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$roles[] = $role; |
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} |
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} |
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$this->setState('Roles', $roles, []); |
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} |
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} |
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/** |
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* @param string $role role to be tested. Note, role is case-insensitive. |
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* @return bool whether the user is of this role |
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*/ |
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public function isInRole($role) |
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{ |
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foreach ($this->getRoles() as $r) { |
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if (strcasecmp($role, $r) === 0) { |
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return true; |
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} |
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} |
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return false; |
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} |
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/** |
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* @return string user data that is serialized and will be stored in session |
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*/ |
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public function saveToString() |
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{ |
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return serialize($this->_state); |
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} |
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/** |
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* @param string $data user data that is serialized and restored from session |
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* @return IUser the user object |
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*/ |
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public function loadFromString($data) |
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{ |
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if (!empty($data)) { |
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$this->_state = unserialize($data); |
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} |
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if (!is_array($this->_state)) { |
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$this->_state = []; |
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} |
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return $this; |
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} |
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/** |
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* Returns the value of a variable that is stored in user session. |
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* |
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* This function is designed to be used by TUser descendant classes |
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* who want to store additional user information in user session. |
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* A variable, if stored in user session using {@link setState} can be |
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* retrieved back using this function. |
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* |
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* @param string $key variable name |
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* @param null|mixed $defaultValue default value |
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* @return mixed the value of the variable. If it doesn't exist, the provided default value will be returned |
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* @see setState |
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*/ |
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protected function getState($key, $defaultValue = null) |
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{ |
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return $this->_state[$key] ?? $defaultValue; |
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} |
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/** |
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* Stores a variable in user session. |
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* |
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* This function is designed to be used by TUser descendant classes |
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* who want to store additional user information in user session. |
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* By storing a variable using this function, the variable may be retrieved |
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* back later using {@link getState}. The variable will be persistent |
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* across page requests during a user session. |
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* |
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* @param string $key variable name |
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* @param mixed $value variable value |
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* @param null|mixed $defaultValue default value. If $value===$defaultValue, the variable will be removed from persistent storage. |
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* @see getState |
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*/ |
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protected function setState($key, $value, $defaultValue = null) |
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{ |
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if ($value === $defaultValue) { |
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unset($this->_state[$key]); |
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} else { |
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$this->_state[$key] = $value; |
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} |
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$this->_stateChanged = true; |
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} |
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/** |
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* @return bool whether user session state is changed (i.e., setState() is called) |
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*/ |
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public function getStateChanged() |
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{ |
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return $this->_stateChanged; |
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} |
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/** |
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* @param bool $value whether user session state is changed |
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*/ |
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public function setStateChanged($value) |
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{ |
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$this->_stateChanged = TPropertyValue::ensureBoolean($value); |
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} |
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} |
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