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<?php |
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/* |
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* Copyright (c) 2011-2015, Celestino Diaz <[email protected]> |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining a copy |
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* of this software and associated documentation files (the "Software"), to deal |
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* in the Software without restriction, including without limitation the rights |
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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* copies of the Software, and to permit persons to whom the Software is |
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* furnished to do so, subject to the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be included in |
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* all copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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* THE SOFTWARE. |
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*/ |
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namespace Brickoo\Component\Common; |
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use Brickoo\Component\Common\Exception\DuplicateRegistrationException; |
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use Brickoo\Component\Common\Exception\IdentifierLockedException; |
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use Brickoo\Component\Common\Exception\IdentifierNotRegisteredException; |
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use Brickoo\Component\Common\Exception\ReadonlyModeException; |
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use Brickoo\Component\Common\Assert; |
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/** |
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* Registry |
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* |
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* Registrations are stored as key value pairs. |
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* Provides getter and setter for accessing the registrations. |
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* Provides lock functionality for each identifier and an read only mode for all identifiers. |
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* @author Celestino Diaz <[email protected]> |
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*/ |
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class Registry extends Locker { |
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/** @var array */ |
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protected $registrations; |
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/** @var boolean */ |
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protected $readOnly; |
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/** |
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* Class constructor. |
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* @param array $registrations the registrations to add |
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* @param boolean $readOnly initialize mode for the registry |
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*/ |
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public function __construct(array $registrations = [], $readOnly = false) { |
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parent::__construct(); |
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$this->registrations = $registrations; |
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$this->readOnly = (!empty($registrations)) && (boolean)$readOnly; |
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} |
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/** |
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* Return all assigned registrations as an array. |
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* @return array |
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*/ |
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public function toArray() { |
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return $this->registrations; |
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} |
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/** |
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* Add a registration to the registry. |
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* @param mixed $registrations the registrations to add |
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* @throws \InvalidArgumentException if passed registrations is empty |
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* @return \Brickoo\Component\Common\Registry |
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*/ |
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public function add($registrations) { |
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if ((!is_array($registrations)) && (!$registrations instanceof \Traversable)) { |
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$registrations = [$registrations]; |
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} |
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foreach ($registrations as $identifier => $value) { |
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$this->register($identifier, $value); |
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} |
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return $this; |
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} |
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/** |
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* Return the registered value from the given identifier. |
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* @param string $identifier the identifier so retrieve the value from |
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* @throws \InvalidArgumentException if the identifier is not valid |
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* @throws \Brickoo\Component\Common\Exception\IdentifierNotRegisteredException |
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* @return mixed |
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*/ |
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public function get($identifier) { |
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Assert::isStringOrInteger($identifier); |
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if (!$this->isRegistered($identifier)) { |
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throw new IdentifierNotRegisteredException($identifier); |
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} |
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return $this->registrations[$identifier]; |
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} |
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/** |
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* Register an identifier-value pair. |
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* Take care of registering objects who are assigned somewhere else |
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* as an reference the changes applies to the registered objects as well. |
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* @param string $identifier the identifier to register |
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* @param mixed $value the identifier value to register with |
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* @throws \Brickoo\Component\Common\Exception\DuplicateRegistrationException |
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* @throws \Brickoo\Component\Common\Exception\ReadonlyModeException |
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* @return \Brickoo\Component\Common\Registry |
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*/ |
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public function register($identifier, $value) { |
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Assert::isStringOrInteger($identifier); |
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if ($this->isRegistered($identifier)) { |
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throw new DuplicateRegistrationException($identifier); |
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} |
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$this->set($identifier, $value); |
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return $this; |
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} |
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/** |
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* Overrides an existing identifier with the new value (!). |
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* If the identifier ist not registered it will be registered. |
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* @param string $identifier the identifier to register |
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* @param mixed $value the identifier value to register |
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* @throws \Brickoo\Component\Common\Exception\ReadonlyModeException |
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* @throws \Brickoo\Component\Common\Exception\IdentifierLockedException |
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* @return \Brickoo\Component\Common\Registry |
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*/ |
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public function override($identifier, $value) { |
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Assert::isStringOrInteger($identifier); |
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if ($this->isLocked($identifier)) { |
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throw new IdentifierLockedException($identifier); |
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} |
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$this->set($identifier, $value); |
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return $this; |
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} |
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/** |
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* Unregister the identifier and his value. |
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* @param string $identifier the identifier to unregister |
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* @throws \Brickoo\Component\Common\Exception\ReadonlyModeException |
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* @throws \Brickoo\Component\Common\Exception\IdentifierLockedException |
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* @throws \Brickoo\Component\Common\Exception\IdentifierNotRegisteredException |
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* @return \Brickoo\Component\Common\Registry |
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*/ |
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public function unregister($identifier) { |
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Assert::isStringOrInteger($identifier); |
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if ($this->isReadOnly()) { |
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throw new ReadonlyModeException(); |
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} |
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if ($this->isLocked($identifier)) { |
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throw new IdentifierLockedException($identifier); |
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} |
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if (!$this->isRegistered($identifier)) { |
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throw new IdentifierNotRegisteredException($identifier); |
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} |
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unset ($this->registrations[$identifier]); |
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return $this; |
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} |
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/** |
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* Check if the identifier is registered. |
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* @param string $identifier the identifier to check |
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* @return boolean |
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*/ |
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public function isRegistered($identifier) { |
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Assert::isStringOrInteger($identifier); |
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return array_key_exists($identifier, $this->registrations); |
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} |
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/** |
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* Sets the read only mode for all registrations. |
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* True to allow read only, write operations will be not allowed. |
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* False for enable read and write operations, locked identifiers will still being locked . |
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* @param boolean $mode the mode to set |
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* @return \Brickoo\Component\Common\Registry |
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*/ |
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public function setReadOnly($mode = true) { |
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Assert::isBoolean($mode); |
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$this->readOnly = $mode; |
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return $this; |
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} |
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/** |
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* Check if the mode is currently set to read only. |
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* @return boolean |
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*/ |
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public function isReadOnly() { |
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return $this->readOnly; |
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} |
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/** |
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* Countable interface implementation. |
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* Returns the number of registrations. |
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* @see Countable::count() |
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* @return integer |
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*/ |
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public function count() { |
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return count($this->registrations); |
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} |
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/** |
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* Returns the number of locked identifiers. |
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* @return integer |
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*/ |
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public function countLocked() { |
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return count($this->locked); |
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} |
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/** {@inheritDoc} */ |
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public function isIdentifierAvailable($identifier) { |
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return $this->isRegistered($identifier); |
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} |
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/** |
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* Set the registered identifier and value. |
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* @param string $identifier |
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* @param mixed $value |
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* @throws Exception\DuplicateRegistrationException |
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* @throws Exception\ReadonlyModeException |
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* @return \Brickoo\Component\Common\Registry |
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*/ |
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private function set($identifier, $value) { |
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if ($this->isReadOnly()) { |
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throw new ReadonlyModeException(); |
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} |
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$this->registrations[$identifier] = $value; |
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return $this; |
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} |
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} |
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