<?php /** * PHPExcel * * Copyright (c) 2006 - 2014 PHPExcel * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * * @category PHPExcel * @package PHPExcel_CachedObjectStorage * @copyright Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel) * @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL * @version ##VERSION##, ##DATE## */ /** * PHPExcel_CachedObjectStorage_Memory * * @category PHPExcel * @package PHPExcel_CachedObjectStorage * @copyright Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel) */ class PHPExcel_CachedObjectStorage_Memory extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache { /** * Dummy method callable from CacheBase, but unused by Memory cache * * @return void */ protected function _storeData() { } // function _storeData() /** * Add or Update a cell in cache identified by coordinate address * * @param string $pCoord Coordinate address of the cell to update * @param PHPExcel_Cell $cell Cell to update * @return PHPExcel_Cell * @throws PHPExcel_Exception */ public function addCacheData($pCoord, PHPExcel_Cell $cell) { $this->_cellCache[$pCoord] = $cell; // Set current entry to the new/updated entry $this->_currentObjectID = $pCoord; return $cell; } // function addCacheData() /** * Get cell at a specific coordinate * * @param string $pCoord Coordinate of the cell * @throws PHPExcel_Exception * @return PHPExcel_Cell Cell that was found, or null if not found */ public function getCacheData($pCoord) { // Check if the entry that has been requested actually exists if (!isset($this->_cellCache[$pCoord])) { $this->_currentObjectID = NULL; // Return null if requested entry doesn't exist in cache return null; } // Set current entry to the requested entry $this->_currentObjectID = $pCoord; // Return requested entry return $this->_cellCache[$pCoord]; } // function getCacheData() /** * Clone the cell collection * * @param PHPExcel_Worksheet $parent The new worksheet * @return void */ public function copyCellCollection(PHPExcel_Worksheet $parent) { parent::copyCellCollection($parent); $newCollection = array(); foreach($this->_cellCache as $k => &$cell) { $newCollection[$k] = clone $cell; $newCollection[$k]->attach($this); } $this->_cellCache = $newCollection; } /** * Clear the cell collection and disconnect from our parent * * @return void */ public function unsetWorksheetCells() { // Because cells are all stored as intact objects in memory, we need to detach each one from the parent foreach($this->_cellCache as $k => &$cell) { $cell->detach(); $this->_cellCache[$k] = null; } unset($cell); $this->_cellCache = array(); // detach ourself from the worksheet, so that it can then delete this object successfully $this->_parent = null; } // function unsetWorksheetCells() }