forked from cockroachdb/cockroach
/
set.go
82 lines (71 loc) · 2.39 KB
/
set.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
// Copyright 2015 The Cockroach Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
// implied. See the License for the specific language governing
// permissions and limitations under the License.
// This code was derived from https://github.com/youtube/vitess.
//
// Copyright 2012, Google Inc. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file
package parser
import "bytes"
// SetVar represents a SET or RESET statement.
type SetVar struct {
Name VarName
Values Exprs
}
// Format implements the NodeFormatter interface.
func (node *SetVar) Format(buf *bytes.Buffer, f FmtFlags) {
buf.WriteString("SET ")
if node.Name == nil {
buf.WriteString("ROW (")
FormatNode(buf, f, node.Values)
buf.WriteString(")")
} else {
FormatNode(buf, f, node.Name)
buf.WriteString(" = ")
FormatNode(buf, f, node.Values)
}
}
// SetClusterSetting represents a SET CLUSTER SETTING statement.
type SetClusterSetting struct {
Name VarName
Value Expr
}
// Format implements the NodeFormatter interface.
func (node *SetClusterSetting) Format(buf *bytes.Buffer, f FmtFlags) {
buf.WriteString("SET CLUSTER SETTING ")
FormatNode(buf, f, node.Name)
buf.WriteString(" = ")
FormatNode(buf, f, node.Value)
}
// SetTransaction represents a SET TRANSACTION statement.
type SetTransaction struct {
Modes TransactionModes
}
// Format implements the NodeFormatter interface.
func (node *SetTransaction) Format(buf *bytes.Buffer, f FmtFlags) {
buf.WriteString("SET TRANSACTION")
node.Modes.Format(buf, f)
}
// SetDefaultIsolation represents a SET SESSION CHARACTERISTICS AS TRANSACTION statement.
type SetDefaultIsolation struct {
Isolation IsolationLevel
}
// Format implements the NodeFormatter interface.
func (node *SetDefaultIsolation) Format(buf *bytes.Buffer, f FmtFlags) {
buf.WriteString("SET SESSION CHARACTERISTICS AS TRANSACTION ISOLATION LEVEL")
if node.Isolation != UnspecifiedIsolation {
buf.WriteByte(' ')
buf.WriteString(node.Isolation.String())
}
}