<?php
|
/**
|
* PHPExcel
|
*
|
* Copyright (c) 2006 - 2012 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 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
|
* @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL
|
* @version 1.7.7, 2012-05-19
|
*/
|
|
|
/**
|
* PHPExcel_CachedObjectStorage_MemorySerialized
|
*
|
* @category PHPExcel
|
* @package PHPExcel_CachedObjectStorage
|
* @copyright Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
|
*/
|
class PHPExcel_CachedObjectStorage_MemorySerialized extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
|
|
/**
|
* Store cell data in cache for the current cell object if it's "dirty",
|
* and the 'nullify' the current cell object
|
*
|
* @return void
|
* @throws Exception
|
*/
|
private function _storeData() {
|
if ($this->_currentCellIsDirty) {
|
$this->_currentObject->detach();
|
|
$this->_cellCache[$this->_currentObjectID] = serialize($this->_currentObject);
|
$this->_currentCellIsDirty = false;
|
}
|
$this->_currentObjectID = $this->_currentObject = null;
|
} // 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 $cell Cell to update
|
* @return void
|
* @throws Exception
|
*/
|
public function addCacheData($pCoord, PHPExcel_Cell $cell) {
|
if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
|
$this->_storeData();
|
}
|
|
$this->_currentObjectID = $pCoord;
|
$this->_currentObject = $cell;
|
$this->_currentCellIsDirty = true;
|
|
return $cell;
|
} // function addCacheData()
|
|
|
/**
|
* Get cell at a specific coordinate
|
*
|
* @param string $pCoord Coordinate of the cell
|
* @throws Exception
|
* @return PHPExcel_Cell Cell that was found, or null if not found
|
*/
|
public function getCacheData($pCoord) {
|
if ($pCoord === $this->_currentObjectID) {
|
return $this->_currentObject;
|
}
|
$this->_storeData();
|
|
// Check if the entry that has been requested actually exists
|
if (!isset($this->_cellCache[$pCoord])) {
|
// Return null if requested entry doesn't exist in cache
|
return null;
|
}
|
|
// Set current entry to the requested entry
|
$this->_currentObjectID = $pCoord;
|
$this->_currentObject = unserialize($this->_cellCache[$pCoord]);
|
// Re-attach the parent worksheet
|
$this->_currentObject->attach($this->_parent);
|
|
// Return requested entry
|
return $this->_currentObject;
|
} // function getCacheData()
|
|
|
/**
|
* Clear the cell collection and disconnect from our parent
|
*
|
* @return void
|
*/
|
public function unsetWorksheetCells() {
|
if(!is_null($this->_currentObject)) {
|
$this->_currentObject->detach();
|
$this->_currentObject = $this->_currentObjectID = null;
|
}
|
$this->_cellCache = array();
|
|
// detach ourself from the worksheet, so that it can then delete this object successfully
|
$this->_parent = null;
|
} // function unsetWorksheetCells()
|
|
}
|
