/**
* Db tree constructor
*
* $fields = array(
* Varien_Data_Tree_Dbp::ID_FIELD => string,
* Varien_Data_Tree_Dbp::PATH_FIELD => string,
* Varien_Data_Tree_Dbp::ORDER_FIELD => string
* )
*
* @param Zend_Db_Adapter_Abstract $connection
* @param string $table
* @param array $fields
*/
public function __construct($connection, $table, $fields)
{
parent::__construct();
if (!$connection) {
throw new Exception('Wrong "$connection" parametr');
}
$this->_conn = $connection;
$this->_table = $table;
if (!isset($fields[self::ID_FIELD]) || !isset($fields[self::PATH_FIELD]) || !isset($fields[self::ORDER_FIELD])) {
throw new Exception('"$fields" tree configuratin array');
}
$this->_idField = $fields[self::ID_FIELD];
$this->_pathField = $fields[self::PATH_FIELD];
$this->_orderField = $fields[self::ORDER_FIELD];
$this->_select = $this->_conn->select();
$this->_select->from($this->_table);
}
