function StartTransaction()
	{
		if ($this->IsTransactionInProgress())
			throw new Exception('Transaction is already in progress.  Commit or rollback must be called before beginning a new transaction');
		
		if ($this->ConnectionSetting->IsReadOnlySlave)
			throw new Exception('Transactions are not allowed on a read-only slave');
		
		$this->RequireConnection(true);
		$this->Observe("DataAdapter ($this->_label) (DataAdapter.StartTransaction)", OBSERVE_QUERY);
		$this->_transactionInProgress = true;
		return $this->_driver->StartTransaction($this->_dbconn);
	}
function StartTransaction()
	{
		if ($this->IsTransactionInProgress())
			throw new Exception('Transaction is already in progress.  Commit or rollback must be called before beginning a new transaction');
		
		if ($this->ConnectionSetting->IsReadOnlySlave)
			throw new Exception('Transactions are not allowed on a read-only slave');
		
		$this->RequireConnection(true);
		$this->Observe("DataAdapter ($this->_label) (DataAdapter.StartTransaction)", OBSERVE_QUERY);
		$this->_transactionInProgress = true;
		return $this->_driver->StartTransaction($this->_dbconn);
	}
function StartTransaction ( ) { if ( $ this -> IsTransactionInProgress ( ) ) throw new Exception ( 'Transaction is already in progress.  Commit or rollback must be called before beginning a new transaction' ) ; if ( $ this -> ConnectionSetting -> IsReadOnlySlave ) throw new Exception ( 'Transactions are not allowed on a read-only slave' ) ; $ this -> RequireConnection ( true ) ; $ this -> Observe ( "DataAdapter ($this->_label) (DataAdapter.StartTransaction)" , OBSERVE_QUERY ) ; $ this -> _transactionInProgress = true ; return $ this -> _driver -> StartTransaction ( $ this -> _dbconn ) ; }
Start a DB transaction, disabling auto-commit if necessar)
@access public
Start a DB transaction disabling auto - commit if necessar )