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 <?php
 /**
  * Zend Framework
  *
  * LICENSE
  *
  * This source file is subject to the new BSD license that is bundled
  * with this package in the file LICENSE.txt.
  * It is also available through the world-wide-web at this URL:
  * http://framework.zend.com/license/new-bsd
  * If you did not receive a copy of the license and are unable to
  * obtain it through the world-wide-web, please send an email
  * to license@zend.com so we can send you a copy immediately.
  *
  * @category   Zend
  * @package    Zend_Log
  * @subpackage Writer
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  * @version    $Id$
  */
 
 /** Zend_Log_Writer_Abstract */
 // require_once 'Zend/Log/Writer/Abstract.php';
 
 /**
  * @category   Zend
  * @package    Zend_Log
  * @subpackage Writer
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  * @version    $Id$
  */
 class Zend_Log_Writer_Db extends Zend_Log_Writer_Abstract
 {
     /**
      * Database adapter instance
      *
      * @var Zend_Db_Adapter
      */
     protected $_db;
 
     /**
      * Name of the log table in the database
      *
      * @var string
      */
     protected $_table;
 
     /**
      * Relates database columns names to log data field keys.
      *
      * @var null|array
      */
     protected $_columnMap;
 
     /**
      * Class constructor
      *
      * @param Zend_Db_Adapter $db   Database adapter instance
      * @param string $table         Log table in database
      * @param array $columnMap
      * @return void
      */
     public function __construct($db, $table, $columnMap = null)
     {
         $this->_db    = $db;
         $this->_table = $table;
         $this->_columnMap = $columnMap;
     }
 
     /**
      * Create a new instance of Zend_Log_Writer_Db
      *
      * @param  array|Zend_Config $config
      * @return Zend_Log_Writer_Db
      */
     static public function factory($config)
     {
         $config = self::_parseConfig($config);
         $config = array_merge(array(
             'db'        => null,
             'table'     => null,
             'columnMap' => null,
         ), $config);
 
         if (isset($config['columnmap'])) {
             $config['columnMap'] = $config['columnmap'];
         }
 
         return new self(
             $config['db'],
             $config['table'],
             $config['columnMap']
         );
     }
 
     /**
      * Formatting is not possible on this writer
      *
      * @return void
      * @throws Zend_Log_Exception
      */
     public function setFormatter(Zend_Log_Formatter_Interface $formatter)
     {
         // require_once 'Zend/Log/Exception.php';
         throw new Zend_Log_Exception(get_class($this) . ' does not support formatting');
     }
 
     /**
      * Remove reference to database adapter
      *
      * @return void
      */
     public function shutdown()
     {
         $this->_db = null;
     }
 
     /**
      * Write a message to the log.
      *
      * @param  array  $event  event data
      * @return void
      * @throws Zend_Log_Exception
      */
     protected function _write($event)
     {
         if ($this->_db === null) {
             // require_once 'Zend/Log/Exception.php';
             throw new Zend_Log_Exception('Database adapter is null');
         }
 
         if ($this->_columnMap === null) {
             $dataToInsert = $event;
         } else {
             $dataToInsert = array();
             foreach ($this->_columnMap as $columnName => $fieldKey) {
                 if (isset($event[$fieldKey])) {
                     $dataToInsert[$columnName] = $event[$fieldKey];
                 }
             }
         }
 
         $this->_db->insert($this->_table, $dataToInsert);
     }
 }