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- // Copyright 2016 The Xorm Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style
- // license that can be found in the LICENSE file.
- package builder
- import (
- "fmt"
- "sort"
- )
- // Neq defines not equal conditions
- type Neq map[string]interface{}
- var _ Cond = Neq{}
- // WriteTo writes SQL to Writer
- func (neq Neq) WriteTo(w Writer) error {
- var args = make([]interface{}, 0, len(neq))
- var i = 0
- for _, k := range neq.sortedKeys() {
- v := neq[k]
- switch v.(type) {
- case []int, []int64, []string, []int32, []int16, []int8:
- if err := NotIn(k, v).WriteTo(w); err != nil {
- return err
- }
- case expr:
- if _, err := fmt.Fprintf(w, "%s<>(", k); err != nil {
- return err
- }
- if err := v.(expr).WriteTo(w); err != nil {
- return err
- }
- if _, err := fmt.Fprintf(w, ")"); err != nil {
- return err
- }
- case *Builder:
- if _, err := fmt.Fprintf(w, "%s<>(", k); err != nil {
- return err
- }
- if err := v.(*Builder).WriteTo(w); err != nil {
- return err
- }
- if _, err := fmt.Fprintf(w, ")"); err != nil {
- return err
- }
- default:
- if _, err := fmt.Fprintf(w, "%s<>?", k); err != nil {
- return err
- }
- args = append(args, v)
- }
- if i != len(neq)-1 {
- if _, err := fmt.Fprint(w, " AND "); err != nil {
- return err
- }
- }
- i = i + 1
- }
- w.Append(args...)
- return nil
- }
- // And implements And with other conditions
- func (neq Neq) And(conds ...Cond) Cond {
- return And(neq, And(conds...))
- }
- // Or implements Or with other conditions
- func (neq Neq) Or(conds ...Cond) Cond {
- return Or(neq, Or(conds...))
- }
- // IsValid tests if this condition is valid
- func (neq Neq) IsValid() bool {
- return len(neq) > 0
- }
- // sortedKeys returns all keys of this Neq sorted with sort.Strings.
- // It is used internally for consistent ordering when generating
- // SQL, see https://github.com/go-xorm/builder/issues/10
- func (neq Neq) sortedKeys() []string {
- keys := make([]string, 0, len(neq))
- for key := range neq {
- keys = append(keys, key)
- }
- sort.Strings(keys)
- return keys
- }
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