New file |
0,0 → 1,345 |
<?php |
/** |
* PHPExcel |
* |
* Copyright (c) 2006 - 2013 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 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel) |
* @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL |
* @version ##VERSION##, ##DATE## |
*/ |
|
|
/** |
* PHPExcel_CachedObjectStorage_SQLite3 |
* |
* @category PHPExcel |
* @package PHPExcel_CachedObjectStorage |
* @copyright Copyright (c) 2006 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel) |
*/ |
class PHPExcel_CachedObjectStorage_SQLite3 extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache { |
|
/** |
* Database table name |
* |
* @var string |
*/ |
private $_TableName = null; |
|
/** |
* Database handle |
* |
* @var resource |
*/ |
private $_DBHandle = null; |
|
/** |
* Prepared statement for a SQLite3 select query |
* |
* @var SQLite3Stmt |
*/ |
private $_selectQuery; |
|
/** |
* Prepared statement for a SQLite3 insert query |
* |
* @var SQLite3Stmt |
*/ |
private $_insertQuery; |
|
/** |
* Prepared statement for a SQLite3 update query |
* |
* @var SQLite3Stmt |
*/ |
private $_updateQuery; |
|
/** |
* Prepared statement for a SQLite3 delete query |
* |
* @var SQLite3Stmt |
*/ |
private $_deleteQuery; |
|
/** |
* Store cell data in cache for the current cell object if it's "dirty", |
* and the 'nullify' the current cell object |
* |
* @return void |
* @throws PHPExcel_Exception |
*/ |
protected function _storeData() { |
if ($this->_currentCellIsDirty) { |
$this->_currentObject->detach(); |
|
$this->_insertQuery->bindValue('id',$this->_currentObjectID,SQLITE3_TEXT); |
$this->_insertQuery->bindValue('data',serialize($this->_currentObject),SQLITE3_BLOB); |
$result = $this->_insertQuery->execute(); |
if ($result === false) |
throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg()); |
$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 $cell Cell to update |
* @return void |
* @throws PHPExcel_Exception |
*/ |
public function addCacheData($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 $pCoord Coordinate of the cell |
* @throws PHPExcel_Exception |
* @return PHPExcel_Cell Cell that was found, or null if not found |
*/ |
public function getCacheData($pCoord) { |
if ($pCoord === $this->_currentObjectID) { |
return $this->_currentObject; |
} |
$this->_storeData(); |
|
$this->_selectQuery->bindValue('id',$pCoord,SQLITE3_TEXT); |
$cellResult = $this->_selectQuery->execute(); |
if ($cellResult === FALSE) { |
throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg()); |
} |
$cellData = $cellResult->fetchArray(SQLITE3_ASSOC); |
if ($cellData === FALSE) { |
// Return null if requested entry doesn't exist in cache |
return NULL; |
} |
|
// Set current entry to the requested entry |
$this->_currentObjectID = $pCoord; |
|
$this->_currentObject = unserialize($cellData['value']); |
// Re-attach this as the cell's parent |
$this->_currentObject->attach($this); |
|
// Return requested entry |
return $this->_currentObject; |
} // function getCacheData() |
|
|
/** |
* Is a value set for an indexed cell? |
* |
* @param string $pCoord Coordinate address of the cell to check |
* @return boolean |
*/ |
public function isDataSet($pCoord) { |
if ($pCoord === $this->_currentObjectID) { |
return TRUE; |
} |
|
// Check if the requested entry exists in the cache |
$this->_selectQuery->bindValue('id',$pCoord,SQLITE3_TEXT); |
$cellResult = $this->_selectQuery->execute(); |
if ($cellResult === FALSE) { |
throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg()); |
} |
$cellData = $cellResult->fetchArray(SQLITE3_ASSOC); |
|
return ($cellData === FALSE) ? FALSE : TRUE; |
} // function isDataSet() |
|
|
/** |
* Delete a cell in cache identified by coordinate address |
* |
* @param string $pCoord Coordinate address of the cell to delete |
* @throws PHPExcel_Exception |
*/ |
public function deleteCacheData($pCoord) { |
if ($pCoord === $this->_currentObjectID) { |
$this->_currentObject->detach(); |
$this->_currentObjectID = $this->_currentObject = NULL; |
} |
|
// Check if the requested entry exists in the cache |
$this->_deleteQuery->bindValue('id',$pCoord,SQLITE3_TEXT); |
$result = $this->_deleteQuery->execute(); |
if ($result === FALSE) |
throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg()); |
|
$this->_currentCellIsDirty = FALSE; |
} // function deleteCacheData() |
|
|
/** |
* Move a cell object from one address to another |
* |
* @param string $fromAddress Current address of the cell to move |
* @param string $toAddress Destination address of the cell to move |
* @return boolean |
*/ |
public function moveCell($fromAddress, $toAddress) { |
if ($fromAddress === $this->_currentObjectID) { |
$this->_currentObjectID = $toAddress; |
} |
|
$this->_deleteQuery->bindValue('id',$toAddress,SQLITE3_TEXT); |
$result = $this->_deleteQuery->execute(); |
if ($result === false) |
throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg()); |
|
$this->_updateQuery->bindValue('toid',$toAddress,SQLITE3_TEXT); |
$this->_updateQuery->bindValue('fromid',$fromAddress,SQLITE3_TEXT); |
$result = $this->_updateQuery->execute(); |
if ($result === false) |
throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg()); |
|
return TRUE; |
} // function moveCell() |
|
|
/** |
* Get a list of all cell addresses currently held in cache |
* |
* @return array of string |
*/ |
public function getCellList() { |
if ($this->_currentObjectID !== null) { |
$this->_storeData(); |
} |
|
$query = "SELECT id FROM kvp_".$this->_TableName; |
$cellIdsResult = $this->_DBHandle->query($query); |
if ($cellIdsResult === false) |
throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg()); |
|
$cellKeys = array(); |
while ($row = $cellIdsResult->fetchArray(SQLITE3_ASSOC)) { |
$cellKeys[] = $row['id']; |
} |
|
return $cellKeys; |
} // function getCellList() |
|
|
/** |
* Clone the cell collection |
* |
* @param PHPExcel_Worksheet $parent The new worksheet |
* @return void |
*/ |
public function copyCellCollection(PHPExcel_Worksheet $parent) { |
$this->_currentCellIsDirty; |
$this->_storeData(); |
|
// Get a new id for the new table name |
$tableName = str_replace('.','_',$this->_getUniqueID()); |
if (!$this->_DBHandle->exec('CREATE TABLE kvp_'.$tableName.' (id VARCHAR(12) PRIMARY KEY, value BLOB) |
AS SELECT * FROM kvp_'.$this->_TableName)) |
throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg()); |
|
// Copy the existing cell cache file |
$this->_TableName = $tableName; |
} // function copyCellCollection() |
|
|
/** |
* Clear the cell collection and disconnect from our parent |
* |
* @return void |
*/ |
public function unsetWorksheetCells() { |
if(!is_null($this->_currentObject)) { |
$this->_currentObject->detach(); |
$this->_currentObject = $this->_currentObjectID = null; |
} |
// detach ourself from the worksheet, so that it can then delete this object successfully |
$this->_parent = null; |
|
// Close down the temporary cache file |
$this->__destruct(); |
} // function unsetWorksheetCells() |
|
|
/** |
* Initialise this new cell collection |
* |
* @param PHPExcel_Worksheet $parent The worksheet for this cell collection |
*/ |
public function __construct(PHPExcel_Worksheet $parent) { |
parent::__construct($parent); |
if (is_null($this->_DBHandle)) { |
$this->_TableName = str_replace('.','_',$this->_getUniqueID()); |
$_DBName = ':memory:'; |
|
$this->_DBHandle = new SQLite3($_DBName); |
if ($this->_DBHandle === false) |
throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg()); |
if (!$this->_DBHandle->exec('CREATE TABLE kvp_'.$this->_TableName.' (id VARCHAR(12) PRIMARY KEY, value BLOB)')) |
throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg()); |
} |
|
$this->_selectQuery = $this->_DBHandle->prepare("SELECT value FROM kvp_".$this->_TableName." WHERE id = :id"); |
$this->_insertQuery = $this->_DBHandle->prepare("INSERT OR REPLACE INTO kvp_".$this->_TableName." VALUES(:id,:data)"); |
$this->_updateQuery = $this->_DBHandle->prepare("UPDATE kvp_".$this->_TableName." SET id=:toId WHERE id=:fromId"); |
$this->_deleteQuery = $this->_DBHandle->prepare("DELETE FROM kvp_".$this->_TableName." WHERE id = :id"); |
} // function __construct() |
|
|
/** |
* Destroy this cell collection |
*/ |
public function __destruct() { |
if (!is_null($this->_DBHandle)) { |
$this->_DBHandle->exec('DROP TABLE kvp_'.$this->_TableName); |
$this->_DBHandle->close(); |
} |
$this->_DBHandle = null; |
} // function __destruct() |
|
|
/** |
* Identify whether the caching method is currently available |
* Some methods are dependent on the availability of certain extensions being enabled in the PHP build |
* |
* @return boolean |
*/ |
public static function cacheMethodIsAvailable() { |
if (!class_exists('SQLite3',FALSE)) { |
return false; |
} |
|
return true; |
} |
|
} |