throws DataException
throws BirtException
	public BigDecimal getBigDecimal( IBaseExpression dataExpr )			throws DataException	{		try		{			return DataTypeUtil.toBigDecimal( getValue( dataExpr ) );		}		catch ( BirtException e )		{			DataException e1 = new DataException( ResourceConstants.DATATYPEUTIL_ERROR,					e );			logger.logp( Level.FINE,					ResultIterator.class.getName( ),					"getBigDecimal",					"An error is thrown by DataTypeUtil.",					e1 );			throw e1;		}	}