forked from dolthub/go-mysql-server
-
Notifications
You must be signed in to change notification settings - Fork 0
/
declare_condition.go
75 lines (63 loc) · 2.08 KB
/
declare_condition.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
// Copyright 2021 Dolthub, Inc.
//
// 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.
package plan
import (
"fmt"
"github.com/Sndav/go-mysql-server/sql"
)
// DeclareCondition represents the DECLARE ... CONDITION statement.
type DeclareCondition struct {
Name string
MysqlErrCode int64
SqlStateValue string
}
var _ sql.Node = (*DeclareCondition)(nil)
// NewDeclareCondition returns a *DeclareCondition node.
func NewDeclareCondition(name string, errCode int64, sqlStateValue string) *DeclareCondition {
return &DeclareCondition{
Name: name,
MysqlErrCode: errCode,
SqlStateValue: sqlStateValue,
}
}
// Resolved implements the sql.Node interface.
func (d *DeclareCondition) Resolved() bool {
return true
}
// String implements the sql.Node interface.
func (d *DeclareCondition) String() string {
val := ""
if d.SqlStateValue != "" {
val = fmt.Sprintf("SQLSTATE '%s'", d.SqlStateValue)
} else {
val = fmt.Sprintf("%d", d.MysqlErrCode)
}
return fmt.Sprintf("DECLARE %s CONDITION FOR %s", d.Name, val)
}
// Schema implements the sql.Node interface.
func (d *DeclareCondition) Schema() sql.Schema {
return nil
}
// Children implements the sql.Node interface.
func (d *DeclareCondition) Children() []sql.Node {
return nil
}
// WithChildren implements the sql.Node interface.
func (d *DeclareCondition) WithChildren(children ...sql.Node) (sql.Node, error) {
return NillaryWithChildren(d, children...)
}
// RowIter implements the sql.Node interface.
func (d *DeclareCondition) RowIter(ctx *sql.Context, row sql.Row) (sql.RowIter, error) {
return sql.RowsToRowIter(), nil
}