toArray(); } /
Convert Zend_Config argument to plain string
adapter name and separate config object. / if ($adapter instanceof Zend_Config) { if (isset($adapter->params)) { $config = $adapter->params->toArray(); } if (isset($adapter->adapter)) { $adapter = (string) $adapter->adapter; } else { $adapter = null; } } /
Verify that adapter parameters are in an array.
/ if (!is_array($config)) { / @see Zend_Db_Exception
/ //require_once 'Zend/Db/Exception.php'; throw new Zend_Db_Exception('Adapter parameters must be in an array or a Zend_Config object'); } / Verify that an adapter name has been specified. / if (!is_string($adapter) || empty($adapter)) { /
@see Zend_Db_Exception / //require_once 'Zend/Db/Exception.php'; throw new Zend_Db_Exception('Adapter name must be specified in a string'); } /
Form full adapter class name
/ $adapterNamespace = 'Zend_Db_Adapter'; if (isset($config['adapterNamespace'])) { if ($config['adapterNamespace'] != '') { $adapterNamespace = $config['adapterNamespace']; } unset($config['adapterNamespace']); } // Adapter no longer normalized- see 这里是http framework.zend .com/issues/browse/ZF-5606 $adapterName = $adapterNamespace . '_'; $adapterName .= str_replace(' ', '_', ucwords(str_replace('_', ' ', strtolower($adapter)))); / Load the adapter class. This throws an exception if the specified class cannot be loaded.
/ if (!class_exists($adapterName)) { //require_once 'Zend/Loader.php'; Zend_Loader::loadClass($adapterName); } / Create an instance of the adapter class. Pass the config to the adapter class constructor.
/ $dbAdapter = new $adapterName($config); / Verify that the object created is a descendent of the abstract adapter type. / if (! $dbAdapter instanceof Zend_Db_Adapter_Abstract) { /
[i] @see Zend_Db_Exception [/i]/ //require_once 'Zend/Db/Exception.php'; throw new Zend_Db_Exception("Adapter class '$adapterName' does not extend Zend_Db_Adapter_Abstract"); } return $dbAdapter; }}
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