示例#1
0
func (e *XSelectIndexExec) extractRowsFromSubResult(t table.Table, subResult *xapi.SubResult) ([]*Row, error) {
	var rows []*Row
	for {
		h, rowData, err := subResult.Next()
		if err != nil {
			return nil, errors.Trace(err)
		}
		if rowData == nil {
			break
		}
		if e.aggregate {
			// compose aggreagte row
			row := &Row{Data: rowData}
			rows = append(rows, row)
			continue
		}
		fullRowData := make([]types.Datum, len(e.indexPlan.Fields()))
		var j int
		for i, field := range e.indexPlan.Fields() {
			if field.Referenced {
				fullRowData[i] = rowData[j]
				j++
			}
		}
		row := resultRowToRow(t, h, fullRowData, e.indexPlan.TableAsName)
		rows = append(rows, row)
	}
	return rows, nil
}
示例#2
0
func extractHandlesFromIndexSubResult(subResult *xapi.SubResult) ([]int64, error) {
	var handles []int64
	for {
		h, data, err := subResult.Next()
		if err != nil {
			return nil, errors.Trace(err)
		}
		if data == nil {
			break
		}
		handles = append(handles, h)
	}
	return handles, nil
}
示例#3
0
func extractRowsFromSubResult(t table.Table, subResult *xapi.SubResult) ([]*Row, error) {
	var rows []*Row
	for {
		h, rowData, err := subResult.Next()
		if err != nil {
			return nil, errors.Trace(err)
		}
		if rowData == nil {
			break
		}
		row := resultRowToRow(t, h, rowData)
		rows = append(rows, row)
	}
	return rows, nil
}
示例#4
0
func (e *NewXSelectIndexExec) extractRowsFromSubResult(t table.Table, subResult *xapi.SubResult) ([]*Row, error) {
	var rows []*Row
	for {
		h, rowData, err := subResult.Next()
		if err != nil {
			return nil, errors.Trace(err)
		}
		if rowData == nil {
			break
		}
		row := resultRowToRow(t, h, rowData, e.indexPlan.TableAsName)
		rows = append(rows, row)
	}
	return rows, nil
}