59 lines
1,007 B
Go
59 lines
1,007 B
Go
package builder
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import (
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"fmt"
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"strings"
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)
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func ConvertSort(ctx Context, sort Map) (string, error) {
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if sort == nil {
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return "", nil
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}
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keys := aggregateSortedKeys([]Map{sort})
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expressions := make([]string, 0)
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for _, key := range keys {
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name := ctx.GetColumnName(key)
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order := normalize_order(sort[key])
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if order != "" {
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order = " " + order
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}
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expressions = append(expressions, name+order)
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}
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return fmt.Sprintf("ORDER BY %s", strings.Join(expressions, ", ")), nil
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}
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func normalize_order(order interface{}) string {
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if order == nil {
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return ""
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}
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orderInt, ok := order.(int)
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if ok {
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if orderInt == 1 {
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return "ASC"
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}
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if orderInt == -1 {
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return "DESC"
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}
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}
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orderStr, ok := order.(string)
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if !ok {
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return ""
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}
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if orderStr == "" {
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return ""
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}
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if orderStr == "1" {
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return "ASC"
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}
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if orderStr == "-1" {
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return "DESC"
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}
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if strings.ToUpper(orderStr) == "ASC" {
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return "ASC"
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}
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if strings.ToUpper(orderStr) == "DESC" {
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return "DESC"
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}
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return ""
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}
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