[fw-general] Zend_Db Transactions - How to get a initiate transaction ?

[Juan Felipe Alavarez Saldarriaga]

Hey :)

Is there a way to use a initiate transaction ? I mean, I got this:

class MyUsersClass
{
    protected $objDb = null;

    public function __construct()
    {
        $this->objDb = Zend_Registry::get( 'objDb' );
    }

    public function save( Array $arrData )
    {
        $this->objDb->beginTransaction();
                
        try 
        {
            // Try to insert the user groups.
            foreach ( $arrUserGroups AS $intGroupIndex => $intGroupId )
            {
                $arrUserGroupsData = array( "user_id" => $lastInsertId, 
"group_id" => $intGroupId );
                
                self::saveUserGroups( $arrUserGroupsData  );
            }
            
            $this->objDb->commit();
        }
        catch ( Exception $objException )
        {
            $this->objDb->rollBack();
        }
    }

    public function saveUserGroups( Array $arrArguments )
    {
        if ( false !== empty( $arrArguments ) )
        {
            throw new Exception( "Data to save user groups can't be empty." );
        }
        
        if ( false !== empty( $arrArguments["user_id"] ) )
        {
            throw new Exception( "User id can't be empty." );
        }
        
        if ( false !== empty( $arrArguments["group_id"] ) )
        {
            throw new Exception( "Group id can't be empty." );
        }
        
        $this->objDb->beginTransaction();        
        
        try
        {
            // Insert data.
            $this->objDb->insert( $this->strUserGroupsTable, $arrArguments );
            
            $this->objDb->commit();            
        }
        catch ( Exception $objException )
        {
            $this->objDb->rollBack();            
            
            throw new Exception( "Can't save user groups - 
({$objException->getMessage()})" );
        }
    }
}

So I'm saving some user data into the save method, that method have a 
transaction started, then I call the saveUserGroups method on the same class 
and it have another 
transaction started, is possible to, I don't know, get the transaction started 
in the save method ? cause I got a fatal error that another transaction is 
started.

Thx.