1: <?php
2: /**
3: * PHPExcel
4: *
5: * Copyright (c) 2006 - 2014 PHPExcel
6: *
7: * This library is free software; you can redistribute it and/or
8: * modify it under the terms of the GNU Lesser General Public
9: * License as published by the Free Software Foundation; either
10: * version 2.1 of the License, or (at your option) any later version.
11: *
12: * This library is distributed in the hope that it will be useful,
13: * but WITHOUT ANY WARRANTY; without even the implied warranty of
14: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15: * Lesser General Public License for more details.
16: *
17: * You should have received a copy of the GNU Lesser General Public
18: * License along with this library; if not, write to the Free Software
19: * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20: *
21: * @category PHPExcel
22: * @package PHPExcel_CachedObjectStorage
23: * @copyright Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
24: * @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL
25: * @version 1.8.0, 2014-03-02
26: */
27:
28:
29: /**
30: * PHPExcel_CachedObjectStorage_Memory
31: *
32: * @category PHPExcel
33: * @package PHPExcel_CachedObjectStorage
34: * @copyright Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
35: */
36: class PHPExcel_CachedObjectStorage_Memory extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
37:
38: /**
39: * Dummy method callable from CacheBase, but unused by Memory cache
40: *
41: * @return void
42: */
43: protected function _storeData() {
44: } // function _storeData()
45:
46: /**
47: * Add or Update a cell in cache identified by coordinate address
48: *
49: * @param string $pCoord Coordinate address of the cell to update
50: * @param PHPExcel_Cell $cell Cell to update
51: * @return PHPExcel_Cell
52: * @throws PHPExcel_Exception
53: */
54: public function addCacheData($pCoord, PHPExcel_Cell $cell) {
55: $this->_cellCache[$pCoord] = $cell;
56:
57: // Set current entry to the new/updated entry
58: $this->_currentObjectID = $pCoord;
59:
60: return $cell;
61: } // function addCacheData()
62:
63:
64: /**
65: * Get cell at a specific coordinate
66: *
67: * @param string $pCoord Coordinate of the cell
68: * @throws PHPExcel_Exception
69: * @return PHPExcel_Cell Cell that was found, or null if not found
70: */
71: public function getCacheData($pCoord) {
72: // Check if the entry that has been requested actually exists
73: if (!isset($this->_cellCache[$pCoord])) {
74: $this->_currentObjectID = NULL;
75: // Return null if requested entry doesn't exist in cache
76: return null;
77: }
78:
79: // Set current entry to the requested entry
80: $this->_currentObjectID = $pCoord;
81:
82: // Return requested entry
83: return $this->_cellCache[$pCoord];
84: } // function getCacheData()
85:
86:
87: /**
88: * Clone the cell collection
89: *
90: * @param PHPExcel_Worksheet $parent The new worksheet
91: * @return void
92: */
93: public function copyCellCollection(PHPExcel_Worksheet $parent) {
94: parent::copyCellCollection($parent);
95:
96: $newCollection = array();
97: foreach($this->_cellCache as $k => &$cell) {
98: $newCollection[$k] = clone $cell;
99: $newCollection[$k]->attach($this);
100: }
101:
102: $this->_cellCache = $newCollection;
103: }
104:
105:
106: /**
107: * Clear the cell collection and disconnect from our parent
108: *
109: * @return void
110: */
111: public function unsetWorksheetCells() {
112: // Because cells are all stored as intact objects in memory, we need to detach each one from the parent
113: foreach($this->_cellCache as $k => &$cell) {
114: $cell->detach();
115: $this->_cellCache[$k] = null;
116: }
117: unset($cell);
118:
119: $this->_cellCache = array();
120:
121: // detach ourself from the worksheet, so that it can then delete this object successfully
122: $this->_parent = null;
123: } // function unsetWorksheetCells()
124:
125: }
126: