1. sfDatabaseConfigHandler.class.php
  2. /**
 * sfDatabaseConfigHandler allows you to setup database connections in a
 * configuration file that will be created for you automatically upon first
 * request.
 *
 * @package    symfony
 * @subpackage config
 * @author     Fabien Potencier 
 * @author     Sean Kerr 
 * @version    SVN: $Id: sfDatabaseConfigHandler.class.php 23810 2009-11-12 11:07:44Z Kris.Wallsmith $
 */
  3. class sfDatabaseConfigHandler extends sfYamlConfigHandler
  4. {
  5.   /**
  6.    * Executes this configuration handler.
  7.    *
  8.    * @param array $configFiles An array of absolute filesystem path to a configuration file
  9.    *
  10.    * @return string Data to be written to a cache file
  11.    *
  12.    * @throws sfConfigurationException If a requested configuration file does not exist or is not readable
  13.    * @throws sfParseException If a requested configuration file is improperly formatted
  14.    */
  15.   public function execute($configFiles)
  16.   {
  17.     list($includes, $data) = $this->parse($configFiles);
  19.     foreach ($includes as $i => $include)
  20.     {
  21.       $includes[$i] = sprintf("require_once('%s');", $include);
  22.     }
  24.     foreach ($data as $name => $database)
  25.     {
  26.       $data[$name] = sprintf("\n'%s' => new %s(%s),", $name, $database[0], var_export($database[1], true));
  27.     }
  29.     // compile data
  30.     return sprintf("<?php\n".
  31.                       "// auto-generated by sfDatabaseConfigHandler\n".
  32.                       "// date: %s\n%s\nreturn array(%s);\n",
  33.                       date('Y/m/d H:i:s'), implode("\n", $includes), implode("\n", $data));
  34.   }
  36.   public function evaluate($configFiles)
  37.   {
  38.     list($includes, $data) = $this->parse($configFiles);
  40.     foreach ($includes as $i => $include)
  41.     {
  42.       require_once($include);
  43.     }
  45.     $databases = array();
  46.     foreach ($data as $name => $database)
  47.     {
  48.       $databases[$name] = new $database[0]($database[1]);
  49.     }
  51.     return $databases;
  52.   }
  54.   protected function parse($configFiles)
  55.   {
  56.     // parse the yaml
  57.     $config = self::getConfiguration($configFiles);
  59.     // init our data and includes arrays
  60.     $data      = array();
  61.     $databases = array();
  62.     $includes  = array();
  64.     // get a list of database connections
  65.     foreach ($config as $name => $dbConfig)
  66.     {
  67.       // is this category already registered?
  68.       if (in_array($name, $databases))
  69.       {
  70.         // this category is already registered
  71.         throw new sfParseException(sprintf('Configuration file "%s" specifies previously registered category "%s".', $configFiles[0], $name));
  72.       }
  74.       // add this database
  75.       $databases[] = $name;
  77.       // let's do our fancy work
  78.       if (!isset($dbConfig['class']))
  79.       {
  80.         // missing class key
  81.         throw new sfParseException(sprintf('Configuration file "%s" specifies category "%s" with missing class key.', $configFiles[0], $name));
  82.       }
  84.       if (isset($dbConfig['file']))
  85.       {
  86.         // we have a file to include
  87.         if (!is_readable($dbConfig['file']))
  88.         {
  89.           // database file doesn't exist
  90.           throw new sfParseException(sprintf('Configuration file "%s" specifies class "%s" with nonexistent or unreadable file "%s".', $configFiles[0], $dbConfig['class'], $dbConfig['file']));
  91.         }
  93.         // append our data
  94.         $includes[] = $dbConfig['file'];
  95.       }
  97.       // parse parameters
  98.       $parameters = array();
  99.       if (isset($dbConfig['param']))
  100.       {
  101.         $parameters = $dbConfig['param'];
  102.       }
  103.       $parameters['name'] = $name;
  105.       // append new data
  106.       $data[$name] = array($dbConfig['class'], $parameters);
  107.     }
  109.     return array($includes, $data);
  110.   }
  112.   /**
  113.    * @see sfConfigHandler
  114.    */
  115.   static public function getConfiguration(array $configFiles)
  116.   {
  117.     $config = self::replaceConstants(self::flattenConfigurationWithEnvironment(self::parseYamls($configFiles)));
  119.     foreach ($config as $name => $dbConfig)
  120.     {
  121.       if (isset($dbConfig['file']))
  122.       {
  123.         $config[$name]['file'] = self::replacePath($dbConfig['file']);
  124.       }
  125.     }
  127.     return $config;
  128.   }
  129. }
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