forked from Shiloh/githaven
161 lines
3.3 KiB
Go
161 lines
3.3 KiB
Go
// Copyright 2016 The Xorm Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package builder
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import "fmt"
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// WriteMap writes conditions' SQL to Writer, op could be =, <>, >, <, <=, >= and etc.
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func WriteMap(w Writer, data map[string]interface{}, op string) error {
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var args = make([]interface{}, 0, len(data))
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var i = 0
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keys := make([]string, 0, len(data))
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for k := range data {
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keys = append(keys, k)
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}
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for _, k := range keys {
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v := data[k]
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switch v.(type) {
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case expr:
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if _, err := fmt.Fprintf(w, "%s%s(", k, op); err != nil {
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return err
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}
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if err := v.(expr).WriteTo(w); err != nil {
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return err
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}
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if _, err := fmt.Fprintf(w, ")"); err != nil {
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return err
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}
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case *Builder:
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if _, err := fmt.Fprintf(w, "%s%s(", k, op); err != nil {
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return err
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}
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if err := v.(*Builder).WriteTo(w); err != nil {
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return err
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}
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if _, err := fmt.Fprintf(w, ")"); err != nil {
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return err
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}
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default:
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if _, err := fmt.Fprintf(w, "%s%s?", k, op); err != nil {
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return err
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}
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args = append(args, v)
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}
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if i != len(data)-1 {
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if _, err := fmt.Fprint(w, " AND "); err != nil {
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return err
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}
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}
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i = i + 1
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}
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w.Append(args...)
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return nil
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}
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// Lt defines < condition
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type Lt map[string]interface{}
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var _ Cond = Lt{}
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// WriteTo write SQL to Writer
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func (lt Lt) WriteTo(w Writer) error {
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return WriteMap(w, lt, "<")
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}
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// And implements And with other conditions
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func (lt Lt) And(conds ...Cond) Cond {
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return condAnd{lt, And(conds...)}
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}
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// Or implements Or with other conditions
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func (lt Lt) Or(conds ...Cond) Cond {
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return condOr{lt, Or(conds...)}
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}
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// IsValid tests if this Eq is valid
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func (lt Lt) IsValid() bool {
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return len(lt) > 0
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}
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// Lte defines <= condition
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type Lte map[string]interface{}
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var _ Cond = Lte{}
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// WriteTo write SQL to Writer
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func (lte Lte) WriteTo(w Writer) error {
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return WriteMap(w, lte, "<=")
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}
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// And implements And with other conditions
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func (lte Lte) And(conds ...Cond) Cond {
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return And(lte, And(conds...))
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}
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// Or implements Or with other conditions
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func (lte Lte) Or(conds ...Cond) Cond {
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return Or(lte, Or(conds...))
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}
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// IsValid tests if this Eq is valid
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func (lte Lte) IsValid() bool {
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return len(lte) > 0
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}
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// Gt defines > condition
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type Gt map[string]interface{}
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var _ Cond = Gt{}
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// WriteTo write SQL to Writer
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func (gt Gt) WriteTo(w Writer) error {
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return WriteMap(w, gt, ">")
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}
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// And implements And with other conditions
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func (gt Gt) And(conds ...Cond) Cond {
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return And(gt, And(conds...))
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}
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// Or implements Or with other conditions
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func (gt Gt) Or(conds ...Cond) Cond {
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return Or(gt, Or(conds...))
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}
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// IsValid tests if this Eq is valid
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func (gt Gt) IsValid() bool {
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return len(gt) > 0
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}
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// Gte defines >= condition
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type Gte map[string]interface{}
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var _ Cond = Gte{}
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// WriteTo write SQL to Writer
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func (gte Gte) WriteTo(w Writer) error {
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return WriteMap(w, gte, ">=")
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}
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// And implements And with other conditions
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func (gte Gte) And(conds ...Cond) Cond {
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return And(gte, And(conds...))
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}
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// Or implements Or with other conditions
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func (gte Gte) Or(conds ...Cond) Cond {
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return Or(gte, Or(conds...))
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}
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// IsValid tests if this Eq is valid
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func (gte Gte) IsValid() bool {
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return len(gte) > 0
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}
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