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<?php |
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/** |
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* Created by Gorlum 16.06.2017 14:32 |
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*/ |
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namespace Common; |
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/** |
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* Class AccessLogged |
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* @package Common |
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*/ |
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class AccessLogged extends AccessMagic { |
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const ACCESS_SET = null; |
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const ACCESS_DELTA_INC = +1; |
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const ACCESS_DELTA_DEC = -1; |
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/** |
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* Starting values of properties |
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* |
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* @var array $_startValues |
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*/ |
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protected $_startValues = []; |
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/** |
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* Changed values |
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* |
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* @var array $_changes |
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*/ |
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protected $_changes = []; |
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/** |
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* Increment/Decrement results AKA deltas |
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* |
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* @var array $_deltas |
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*/ |
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protected $_deltas = []; |
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/** |
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* Stored delta value which would be applied on next __set() call |
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* |
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* @var int|float $_currentDelta |
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*/ |
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protected $_currentDelta = self::ACCESS_SET; |
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protected function blockChange($name) { |
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if (array_key_exists($name, $this->_deltas)) { |
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throw new \Exception(get_called_class() . '::' . $name . ' already INCREMENTED/DECREMENTED - can not CHANGE', ERR_ERROR); |
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} |
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} |
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protected function blockDelta($name) { |
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if (array_key_exists($name, $this->_changes)) { |
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throw new \Exception(get_called_class() . '::' . $name . ' already changed - can not use DELTA', ERR_ERROR); |
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} |
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} |
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protected function valueSet($name, $value) { |
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if ($this->__isset($name)) { |
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$this->blockChange($name); |
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$this->_changes[$name] = $value; |
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} else { |
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$this->_startValues[$name] = $value; |
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} |
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parent::__set($name, $value); |
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} |
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protected function valueDelta($name, $value) { |
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$this->blockDelta($name); |
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!isset($this->_deltas[$name]) ? $this->_deltas[$name] = 0 : false; |
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!isset($this->_startValues[$name]) ? $this->_startValues[$name] = 0 : false; |
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$value *= $this->_currentDelta === self::ACCESS_DELTA_DEC ? -1 : +1; |
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$this->_deltas[$name] += $value; |
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parent::__set($name, parent::__get($name) + $value); |
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$this->_currentDelta = self::ACCESS_SET; |
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} |
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public function __set($name, $value) { |
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if ($this->_currentDelta === self::ACCESS_SET) { |
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$this->valueSet($name, $value); |
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} else { |
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$this->valueDelta($name, $value); |
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} |
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} |
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// /** |
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// * Changes field by value |
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// * |
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// * Changes only $values and $_deltas |
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// * |
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// * @param string $name |
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// * @param int|float $value Default: 1 |
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// */ |
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// public function delta($name, $value = 1) { |
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// $this->valueDelta($name, $value); |
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// } |
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// |
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// /** |
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// * Increments property by value |
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// * |
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// * Changes only $values and $_deltas |
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// * |
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// * @param string $name |
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// * @param int|float $value Default: 1 |
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// */ |
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// public function inc($name, $value = 1) { |
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// $this->delta($name, +$value); |
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// } |
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// |
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// /** |
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// * Decrements property by value |
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// * |
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// * Changes only $values and $_deltas |
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// * |
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// * @param string $name |
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// * @param int|float $value Default: 1 |
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// */ |
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// public function dec($name, $value = 1) { |
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// $this->delta($name, -$value); |
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// } |
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/** |
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* Mark next set operation as delta increment |
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* |
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* @return $this |
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*/ |
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public function inc() { |
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$this->_currentDelta = self::ACCESS_DELTA_INC; |
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return $this; |
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} |
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/** |
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* Mark next set operation as delta decrement |
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* |
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* @return $this |
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*/ |
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public function dec() { |
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$this->_currentDelta = self::ACCESS_DELTA_DEC; |
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return $this; |
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} |
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public function getChanges() { |
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return $this->_changes; |
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} |
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public function getDeltas() { |
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return $this->_deltas; |
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} |
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/** |
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* Accepts changes |
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* |
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* Makes current values a start one and resets changes/deltas |
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*/ |
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public function acceptChanges() { |
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$this->_startValues = $this->values; |
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$this->_changes = []; |
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$this->_deltas = []; |
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} |
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/** |
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* Rolls changes back |
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*/ |
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public function rollback() { |
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$this->values = $this->_startValues; |
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$this->_changes = []; |
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$this->_deltas = []; |
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} |
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/** |
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* Is container was changed? |
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* |
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* @return bool |
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*/ |
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public function isChanged() { |
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return empty($this->_changes) && empty($this->_deltas); |
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} |
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public function clear() { |
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parent::clear(); |
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$this->acceptChanges(); |
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} |
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} |
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supernova-ws /
SuperNova
