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<?php |
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/** |
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* apparat-object |
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* |
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* @category Apparat |
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* @package Apparat\Object |
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* @subpackage Apparat\Object\Domain |
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* @author Joschi Kuphal <[email protected]> / @jkphl |
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* @copyright Copyright © 2016 Joschi Kuphal <[email protected]> / @jkphl |
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* @license http://opensource.org/licenses/MIT The MIT License (MIT) |
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*/ |
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/*********************************************************************************** |
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* The MIT License (MIT) |
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* |
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* Copyright © 2016 Joschi Kuphal <[email protected]> / @jkphl |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining a copy of |
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* this software and associated documentation files (the "Software"), to deal in |
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* the Software without restriction, including without limitation the rights to |
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of |
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* the Software, and to permit persons to whom the Software is furnished to do so, |
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* 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 all |
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* 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, FITNESS |
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR |
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER |
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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***********************************************************************************/ |
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namespace Apparat\Object\Domain\Model\Object; |
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use Apparat\Object\Domain\Contract\SerializablePropertyInterface; |
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/** |
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* Object revision |
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* |
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* @package Apparat\Object |
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* @subpackage Apparat\Object\Domain |
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*/ |
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class Revision implements SerializablePropertyInterface |
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{ |
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/** |
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* Current revision |
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* |
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* @var null |
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*/ |
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const CURRENT = null; |
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/** |
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* Object revision number |
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* |
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* @var int |
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*/ |
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protected $revision = null; |
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/** |
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* Revision constructor |
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* |
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* @param int $revision Object revision number |
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*/ |
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public function __construct($revision) |
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{ |
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// If the revision number is invalid |
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if (!self::isValidRevision($revision)) { |
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throw new InvalidArgumentException( |
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sprintf('Invalid object revision number "%s"', $revision), |
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InvalidArgumentException::INVALID_OBJECT_REVISION |
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); |
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} |
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$this->revision = $revision; |
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} |
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/** |
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* Test whether a revision number is valid |
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* |
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* @param int|NULL $revision Revision number |
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* @return bool Is valid revision |
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*/ |
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public static function isValidRevision($revision) |
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{ |
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return ($revision === self::CURRENT) || (is_int($revision) && ($revision >= 1)); |
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} |
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/** |
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* Return a current revision instance |
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* |
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* @return Revision Current revision instance |
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*/ |
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public static function current() { |
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return new static(self::CURRENT); |
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} |
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/** |
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* Unserialize the string representation of this property |
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* |
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* @param string $str Serialized property |
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* @return Revision Revision property |
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*/ |
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public static function unserialize($str) |
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{ |
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return new static(intval($str)); |
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} |
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/** |
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* Test whether this is the current revision |
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* |
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* @return bool Is current revision |
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*/ |
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public function isCurrent() |
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{ |
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return $this->revision === self::CURRENT; |
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} |
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/** |
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* Serialize the property |
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* |
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* @return mixed Property serialization |
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*/ |
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public function serialize() |
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{ |
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return $this->getRevision(); |
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} |
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/** |
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* Return the object revision number |
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* |
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* @return int Object revision number |
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*/ |
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public function getRevision() |
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{ |
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return $this->revision; |
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} |
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/** |
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* Return an incremented revision |
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* |
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* @return Revision Incremented revision |
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*/ |
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public function increment() { |
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return ($this->revision === self::CURRENT) ? $this : new static($this->revision + 1); |
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} |
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} |
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apparat /
object
