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<?php |
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/* |
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Condorcet PHP Class, with Schulze Methods and others ! |
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By Julien Boudry - MIT LICENSE (Please read LICENSE.txt) |
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https://github.com/julien-boudry/Condorcet |
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*/ |
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declare(strict_types=1); |
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namespace Condorcet\DataManager; |
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use Condorcet\DataManager\DataContextInterface; |
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use Condorcet\DataManager\DataHandlerDrivers\DataHandlerDriverInterface; |
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use Condorcet\CondorcetException; |
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use Condorcet\CondorcetVersion; |
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abstract class ArrayManager implements \ArrayAccess, \Countable, \Iterator |
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{ |
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use CondorcetVersion; |
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////// |
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public static $CacheSize = 2000; |
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public static $MaxContainerLength = 2000; |
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protected $_Container = []; |
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protected $_DataHandler = null; |
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protected $_link = []; |
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protected $_Cache = []; |
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protected $_CacheMaxKey = 0; |
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protected $_CacheMinKey = 0; |
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protected $_cursor = null; |
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protected $_counter = 0; |
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protected $_maxKey = -1; |
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public function __construct () {} |
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public function __destruct () |
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{ |
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$this->regularize(); |
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} |
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public function __sleep () : array |
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{ |
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$this->regularize(); |
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$this->clearCache(); |
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$this->rewind(); |
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return ['_Container','_DataHandler','_link']; |
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} |
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public function __wakeup () |
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{ |
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$this->resetMaxKey(); |
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$this->resetCounter(); |
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} |
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/////////// Implement ArrayAccess /////////// |
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public function offsetSet($offset, $value) : void |
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{ |
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if ($offset === null) : |
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$this->_Container[++$this->_maxKey] = $value; |
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++$this->_counter; |
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else : |
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$state = !$this->keyExist($offset); |
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$this->_Container[$offset] = $value; |
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if ($state) : |
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++$this->_counter; |
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if ($offset > $this->_maxKey) : |
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$this->_maxKey = $offset; |
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endif; |
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ksort($this->_Container,SORT_NUMERIC); |
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elseif ($this->_DataHandler !== null) : |
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$this->_DataHandler->deleteOneEntity($offset, true); |
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endif; |
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$this->clearCache(); |
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endif; |
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$this->checkRegularize(); |
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} |
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// Use by isset() function, must return false if offset value is null. |
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public function offsetExists($offset) : bool |
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{ |
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return ( isset($this->_Container[$offset]) || ($this->_DataHandler !== null && $this->_DataHandler->selectOneEntity($offset) !== false) ) ? true : false ; |
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} |
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public function offsetUnset($offset) : bool |
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{ |
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if ($this->keyExist($offset)) : |
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if (array_key_exists($offset, $this->_Container)) : |
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unset($this->_Container[$offset]); |
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else : |
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unset($this->_Cache[$offset]); |
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$this->_DataHandler->deleteOneEntity($offset, false); |
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endif; |
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--$this->_counter; |
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return true; |
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else : |
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return false; |
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endif; |
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} |
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public function offsetGet($offset) |
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{ |
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if (isset($this->_Container[$offset])) : |
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return $this->_Container[$offset]; |
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elseif ($this->_DataHandler !== null) : |
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if (array_key_exists($offset, $this->_Cache)) : |
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return $this->_Cache[$offset]; |
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else : |
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$query = $this->_DataHandler->selectOneEntity($offset); |
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return ($query === false) ? null : $query; |
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endif; |
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else : |
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return null; |
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endif; |
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} |
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/////////// Implement Iterator /////////// |
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protected $valid = true; |
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public function rewind() : void { |
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$this->_cursor = null; |
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$this->valid = true; |
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reset($this->_Cache); |
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reset($this->_Container); |
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} |
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public function current() { |
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return $this->offsetGet($this->key()); |
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} |
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public function key() : ?int |
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{ |
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if ($this->_counter === 0) : |
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return null; |
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else : |
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return ($this->_cursor === null) ? $this->getFirstKey() : $this->_cursor; |
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endif; |
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} |
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public function next() : void |
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{ |
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$oldCursor = $this->_cursor; |
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if ($this->_cursor >= $this->_maxKey) : |
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// Do nothing |
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elseif (!$this->isUsingHandler()) : |
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$this->setCursorOnNextKeyInArray($this->_Container); |
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else : |
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$this->populateCache(); |
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$this->setCursorOnNextKeyInArray($this->_Cache); |
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endif; |
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if ($this->_cursor === $oldCursor) : |
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$this->valid = false; |
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endif; |
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} |
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protected function setCursorOnNextKeyInArray (array &$array) |
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{ |
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next($array); |
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$arrayKey = key($array); |
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if ($arrayKey > $this->key()) : |
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return $this->_cursor = $arrayKey; |
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endif; |
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} |
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public function valid() : bool { |
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return $this->valid; |
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} |
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/////////// Implement Countable /////////// |
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public function count () : int { |
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return $this->_counter; |
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} |
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/////////// Array Methods /////////// |
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public function getFullDataSet () : array |
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{ |
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$this->regularize(); |
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return (!$this->isUsingHandler()) ? $this->_Container : $this->_DataHandler->selectRangeEntitys(0,$this->_maxKey + 1); |
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} |
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public function keyExist ($offset) : bool |
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{ |
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if ( array_key_exists($offset, $this->_Container) || ($this->_DataHandler !== null && $this->_DataHandler->selectOneEntity($offset) !== false) ) : |
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return true; |
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else : |
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return false; |
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endif; |
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} |
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public function getFirstKey () : int |
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{ |
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$r = array_keys($this->_Container); |
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if ($this->_DataHandler !== null) : |
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$r[] = $this->_DataHandler->selectMinKey(); |
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endif; |
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return (int) min($r); |
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} |
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public function getContainerSize () : int |
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{ |
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return count($this->_Container); |
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} |
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public function getCacheSize () : int |
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{ |
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return count($this->_Cache); |
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} |
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public function debugGetCache () : array |
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{ |
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return $this->_Cache; |
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} |
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/////////// HANDLER API /////////// |
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public function regularize () : bool |
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{ |
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if (!$this->isUsingHandler() || empty($this->_Container)) : |
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return false; |
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else : |
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$this->_DataHandler->insertEntitys($this->_Container); |
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$this->_Container = []; |
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return true; |
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endif; |
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} |
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81 |
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public function checkRegularize () : bool |
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{ |
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81 |
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if ( $this->_DataHandler !== null && self::$MaxContainerLength <= $this->getContainerSize() ) : |
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$this->regularize(); |
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return true; |
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else : |
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return false; |
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endif; |
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} |
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2 |
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protected function populateCache () : void |
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{ |
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$this->regularize(); |
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2 |
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$currentKey = $this->key(); |
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if ( empty($this->_Cache) || $currentKey >= $this->_CacheMaxKey || $currentKey < $this->_CacheMinKey ) : |
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$this->_Cache = $this->_DataHandler->selectRangeEntitys($currentKey, self::$CacheSize); |
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$keys = array_keys($this->_Cache); |
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$this->_CacheMaxKey = max($keys); |
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2 |
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$this->_CacheMinKey = min($keys); |
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endif; |
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2 |
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} |
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279
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2 |
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public function clearCache () : void |
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{ |
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2 |
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$this->_Cache = []; |
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2 |
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$this->_CacheMaxKey = 0; |
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2 |
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$this->_CacheMinKey = 0; |
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2 |
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} |
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285
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72 |
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public function isUsingHandler () |
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287
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{ |
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288
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72 |
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return $this->_DataHandler !== null; |
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} |
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291
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/////////// HANDLER INTERRACTION /////////// |
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292
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293
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3 |
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public function resetCounter () : int |
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294
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{ |
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295
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3 |
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return $this->_counter = $this->getContainerSize() + ( ($this->isUsingHandler()) ? $this->_DataHandler->countEntitys() : 0 ); |
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296
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} |
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297
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298
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3 |
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public function resetMaxKey () : ?int |
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299
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{ |
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300
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3 |
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$this->resetCounter(); |
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301
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302
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3 |
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if ($this->count() < 1) : |
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3 |
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$this->_maxKey = -1; |
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3 |
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return null; |
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305
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else : |
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306
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1 |
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$maxContainerKey = (empty($this->_Container)) ? null : max(array_keys($this->_Container)); |
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1 |
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$maxHandlerKey = ($this->_DataHandler !== null) ? $this->_DataHandler->selectMaxKey() : null; |
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308
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309
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1 |
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return $this->_maxKey = max( $maxContainerKey,$maxHandlerKey ); |
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310
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endif; |
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311
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} |
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312
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313
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3 |
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public function importHandler (DataHandlerDriverInterface $handler) : bool |
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314
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{ |
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315
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3 |
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if ($handler->countEntitys() === 0) : |
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316
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3 |
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$this->_DataHandler = $handler; |
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317
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3 |
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$this->_DataHandler->_dataContextObject = $this->getDataContextObject(); |
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318
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319
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try { |
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320
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3 |
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$this->regularize(); |
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321
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} catch (\Exception $e) { |
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322
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$this->_DataHandler = null; |
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323
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$this->resetCounter(); |
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324
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$this->resetMaxKey(); |
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325
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throw $e; |
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326
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} |
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327
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328
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3 |
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$this->resetCounter(); |
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329
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3 |
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$this->resetMaxKey(); |
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330
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331
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3 |
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return true; |
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332
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else : |
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333
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throw new CondorcetException; |
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334
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endif; |
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335
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} |
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336
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337
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1 |
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public function closeHandler () : void |
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338
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{ |
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339
|
1 |
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if ($this->_DataHandler !== null) : |
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340
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1 |
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$this->regularize(); |
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341
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1 |
|
$this->clearCache(); |
|
342
|
|
|
|
|
343
|
1 |
|
$this->_Container = $this->_DataHandler->selectRangeEntitys(0,$this->_maxKey + 1); |
|
344
|
|
|
|
|
345
|
1 |
|
$this->_DataHandler = null; |
|
346
|
|
|
|
|
347
|
1 |
|
$this->resetCounter(); |
|
348
|
1 |
|
$this->resetMaxKey(); |
|
349
|
|
|
endif; |
|
350
|
1 |
|
} |
|
351
|
|
|
|
|
352
|
|
|
public function getDataContextObject () : DataContextInterface |
|
353
|
|
|
{ |
|
354
|
|
|
return new Class implements DataContextInterface { |
|
355
|
|
|
public function dataCallBack ($data) |
|
356
|
|
|
{ |
|
357
|
|
|
return $data; |
|
358
|
|
|
} |
|
359
|
|
|
|
|
360
|
|
|
public function dataPrepareStoringAndFormat ($data) |
|
361
|
|
|
{ |
|
362
|
|
|
return $data; |
|
363
|
|
|
} |
|
364
|
|
|
}; |
|
365
|
|
|
} |
|
366
|
|
|
} |
|
367
|
|
|
|
In the issue above, the returned value is violating the contract defined by the mentioned interface.
Let's take a look at an example: