Db.php

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<?php

class Zend_Db
{

    const PROFILER = 'profiler';

    const CASE_FOLDING = 'caseFolding';

    const FETCH_MODE = 'fetchMode';

    const AUTO_QUOTE_IDENTIFIERS = 'autoQuoteIdentifiers';

    const ALLOW_SERIALIZATION = 'allowSerialization';

    const AUTO_RECONNECT_ON_UNSERIALIZE = 'autoReconnectOnUnserialize';

    const INT_TYPE    = 0;
    const BIGINT_TYPE = 1;
    const FLOAT_TYPE  = 2;

    const ATTR_AUTOCOMMIT = 0;
    const ATTR_CASE = 8;
    const ATTR_CLIENT_VERSION = 5;
    const ATTR_CONNECTION_STATUS = 7;
    const ATTR_CURSOR = 10;
    const ATTR_CURSOR_NAME = 9;
    const ATTR_DRIVER_NAME = 16;
    const ATTR_ERRMODE = 3;
    const ATTR_FETCH_CATALOG_NAMES = 15;
    const ATTR_FETCH_TABLE_NAMES = 14;
    const ATTR_MAX_COLUMN_LEN = 18;
    const ATTR_ORACLE_NULLS = 11;
    const ATTR_PERSISTENT = 12;
    const ATTR_PREFETCH = 1;
    const ATTR_SERVER_INFO = 6;
    const ATTR_SERVER_VERSION = 4;
    const ATTR_STATEMENT_CLASS = 13;
    const ATTR_STRINGIFY_FETCHES = 17;
    const ATTR_TIMEOUT = 2;
    const CASE_LOWER = 2;
    const CASE_NATURAL = 0;
    const CASE_UPPER = 1;
    const CURSOR_FWDONLY = 0;
    const CURSOR_SCROLL = 1;
    const ERR_ALREADY_EXISTS = NULL;
    const ERR_CANT_MAP = NULL;
    const ERR_CONSTRAINT = NULL;
    const ERR_DISCONNECTED = NULL;
    const ERR_MISMATCH = NULL;
    const ERR_NO_PERM = NULL;
    const ERR_NONE = '00000';
    const ERR_NOT_FOUND = NULL;
    const ERR_NOT_IMPLEMENTED = NULL;
    const ERR_SYNTAX = NULL;
    const ERR_TRUNCATED = NULL;
    const ERRMODE_EXCEPTION = 2;
    const ERRMODE_SILENT = 0;
    const ERRMODE_WARNING = 1;
    const FETCH_ASSOC = 2;
    const FETCH_BOTH = 4;
    const FETCH_BOUND = 6;
    const FETCH_CLASS = 8;
    const FETCH_CLASSTYPE = 262144;
    const FETCH_COLUMN = 7;
    const FETCH_FUNC = 10;
    const FETCH_GROUP = 65536;
    const FETCH_INTO = 9;
    const FETCH_LAZY = 1;
    const FETCH_NAMED = 11;
    const FETCH_NUM = 3;
    const FETCH_OBJ = 5;
    const FETCH_ORI_ABS = 4;
    const FETCH_ORI_FIRST = 2;
    const FETCH_ORI_LAST = 3;
    const FETCH_ORI_NEXT = 0;
    const FETCH_ORI_PRIOR = 1;
    const FETCH_ORI_REL = 5;
    const FETCH_SERIALIZE = 524288;
    const FETCH_UNIQUE = 196608;
    const NULL_EMPTY_STRING = 1;
    const NULL_NATURAL = 0;
    const NULL_TO_STRING = NULL;
    const PARAM_BOOL = 5;
    const PARAM_INPUT_OUTPUT = -2147483648;
    const PARAM_INT = 1;
    const PARAM_LOB = 3;
    const PARAM_NULL = 0;
    const PARAM_STMT = 4;
    const PARAM_STR = 2;

    public static function factory($adapter, $config = array())
    {
        if ($config instanceof Zend_Config) {
            $config = $config->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)) {
            #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)) {
            #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 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 (! $dbAdapter instanceof Zend_Db_Adapter_Abstract) {
            #require_once 'Zend/Db/Exception.php';
            throw new Zend_Db_Exception("Adapter class '$adapterName' does not extend Zend_Db_Adapter_Abstract");
        }

        return $dbAdapter;
    }

}