Esempio n. 1
0
func (c *ClientConn) loadResultWithFuncIntoMap(rs []*mysql.Result,
	groupByIndexs []int, funcExprs map[int]string) (map[string]*ResultRow, error) {

	resultMap := make(map[string]*ResultRow)
	rt := new(mysql.Result)
	rt.Resultset = new(mysql.Resultset)
	rt.Fields = rs[0].Fields

	//change Result into map
	for _, r := range rs {
		for i := 0; i < len(r.Values); i++ {
			keySlice := r.Values[i][groupByIndexs[0]:]
			mk, err := c.generateMapKey(keySlice)
			if err != nil {
				return nil, err
			}

			if v, ok := resultMap[mk]; ok {
				//init rt
				rt.Values = nil
				rt.RowDatas = nil

				//append v and r into rt, and calculate the function value
				rt.Values = append(rt.Values, r.Values[i], v.Value)
				rt.RowDatas = append(rt.RowDatas, r.RowDatas[i], v.RowData)
				resultTmp := []*mysql.Result{rt}

				for funcIndex, funcName := range funcExprs {
					funcValue, err := c.calFuncExprValue(funcName, resultTmp, funcIndex)
					if err != nil {
						return nil, err
					}
					//set the function value in group by
					resultMap[mk].Value[funcIndex] = funcValue
				}
			} else { //key is not exist
				resultMap[mk] = &ResultRow{
					Value:   r.Values[i],
					RowData: r.RowDatas[i],
				}
			}
		}
	}

	return resultMap, nil
}
Esempio n. 2
0
func (c *Conn) readResultRows(result *mysql.Result, isBinary bool) (err error) {
	var data []byte

	for {
		data, err = c.readPacket()

		if err != nil {
			return
		}

		// EOF Packet
		if c.isEOFPacket(data) {
			if c.capability&mysql.CLIENT_PROTOCOL_41 > 0 {
				//result.Warnings = binary.LittleEndian.Uint16(data[1:])
				//todo add strict_mode, warning will be treat as error
				result.Status = binary.LittleEndian.Uint16(data[3:])
				c.status = result.Status
			}

			break
		}

		result.RowDatas = append(result.RowDatas, data)
	}

	result.Values = make([][]interface{}, len(result.RowDatas))

	for i := range result.Values {
		result.Values[i], err = result.RowDatas[i].Parse(result.Fields, isBinary)

		if err != nil {
			return err
		}
	}

	return nil
}