112 lines
3.7 KiB
PHP
112 lines
3.7 KiB
PHP
<?php
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namespace PhpOffice\PhpSpreadsheet\CachedObjectStorage;
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/**
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* Copyright (c) 2006 - 2016 PhpSpreadsheet
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* @category PhpSpreadsheet
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* @copyright Copyright (c) 2006 - 2016 PhpSpreadsheet (https://github.com/PHPOffice/PhpSpreadsheet)
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* @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL
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*/
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class Memory extends CacheBase implements ICache
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{
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/**
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* Dummy method callable from CacheBase, but unused by Memory cache
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*/
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protected function storeData()
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{
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}
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/**
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* Add or Update a cell in cache identified by coordinate address
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*
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* @param string $pCoord Coordinate address of the cell to update
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* @param \PhpOffice\PhpSpreadsheet\Cell $cell Cell to update
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* @throws \PhpOffice\PhpSpreadsheet\Exception
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* @return \PhpOffice\PhpSpreadsheet\Cell
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*/
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public function addCacheData($pCoord, \PhpOffice\PhpSpreadsheet\Cell $cell)
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{
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$this->cellCache[$pCoord] = $cell;
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// Set current entry to the new/updated entry
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$this->currentObjectID = $pCoord;
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return $cell;
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}
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/**
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* Get cell at a specific coordinate
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*
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* @param string $pCoord Coordinate of the cell
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* @throws \PhpOffice\PhpSpreadsheet\Exception
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* @return \PhpOffice\PhpSpreadsheet\Cell Cell that was found, or null if not found
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*/
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public function getCacheData($pCoord)
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{
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// Check if the entry that has been requested actually exists
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if (!isset($this->cellCache[$pCoord])) {
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$this->currentObjectID = null;
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// Return null if requested entry doesn't exist in cache
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return null;
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}
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// Set current entry to the requested entry
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$this->currentObjectID = $pCoord;
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// Return requested entry
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return $this->cellCache[$pCoord];
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}
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/**
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* Clone the cell collection
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*
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* @param \PhpOffice\PhpSpreadsheet\Worksheet $parent The new worksheet that we're copying to
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*/
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public function copyCellCollection(\PhpOffice\PhpSpreadsheet\Worksheet $parent)
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{
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parent::copyCellCollection($parent);
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$newCollection = [];
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foreach ($this->cellCache as $k => &$cell) {
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$newCollection[$k] = clone $cell;
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$newCollection[$k]->attach($this);
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}
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$this->cellCache = $newCollection;
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}
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/**
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* Clear the cell collection and disconnect from our parent
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*/
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public function unsetWorksheetCells()
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{
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// Because cells are all stored as intact objects in memory, we need to detach each one from the parent
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foreach ($this->cellCache as $k => &$cell) {
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$cell->detach();
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$this->cellCache[$k] = null;
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}
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unset($cell);
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$this->cellCache = [];
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// detach ourself from the worksheet, so that it can then delete this object successfully
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$this->parent = null;
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}
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}
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