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protected/extensions/PHPExcel/CachedObjectStorage/Memory.php 3.79 KB
f6e211e4   Administrator   finish work part 1
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  <?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    1.8.0, 2014-03-02

   */

  

  

  /**

   * 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()

  

  }