-
Notifications
You must be signed in to change notification settings - Fork 267
/
parser_factory.go
87 lines (76 loc) · 2.67 KB
/
parser_factory.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
83
84
85
86
87
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 parser
import (
aparser "github.com/arana-db/parser"
"github.com/arana-db/parser/ast"
"github.com/seata/seata-go/pkg/datasource/sql/types"
)
func DoParser(query string) (*types.ParseContext, error) {
p := aparser.New()
stmtNodes, _, err := p.Parse(query, "", "")
if err != nil {
return nil, err
}
if len(stmtNodes) == 1 {
return parseParseContext(stmtNodes[0]), err
}
parserCtx := types.ParseContext{
SQLType: types.SQLTypeMulti,
ExecutorType: types.MultiExecutor,
MultiStmt: make([]*types.ParseContext, 0, len(stmtNodes)),
}
for _, node := range stmtNodes {
parserCtx.MultiStmt = append(parserCtx.MultiStmt, parseParseContext(node))
}
return &parserCtx, nil
}
func parseParseContext(stmtNode ast.StmtNode) *types.ParseContext {
parserCtx := new(types.ParseContext)
switch stmt := stmtNode.(type) {
case *ast.InsertStmt:
parserCtx.SQLType = types.SQLTypeInsert
parserCtx.InsertStmt = stmt
parserCtx.ExecutorType = types.InsertExecutor
if stmt.IsReplace {
parserCtx.ExecutorType = types.ReplaceIntoExecutor
}
if len(stmt.OnDuplicate) != 0 {
parserCtx.SQLType = types.SQLTypeInsertOnDuplicateUpdate
parserCtx.ExecutorType = types.InsertOnDuplicateExecutor
}
case *ast.UpdateStmt:
parserCtx.SQLType = types.SQLTypeUpdate
parserCtx.UpdateStmt = stmt
parserCtx.ExecutorType = types.UpdateExecutor
case *ast.SelectStmt:
if stmt.LockInfo != nil && stmt.LockInfo.LockType == ast.SelectLockForUpdate {
parserCtx.SQLType = types.SQLTypeSelectForUpdate
parserCtx.SelectStmt = stmt
parserCtx.ExecutorType = types.SelectForUpdateExecutor
} else {
parserCtx.SQLType = types.SQLTypeSelect
parserCtx.SelectStmt = stmt
parserCtx.ExecutorType = types.SelectExecutor
}
case *ast.DeleteStmt:
parserCtx.SQLType = types.SQLTypeDelete
parserCtx.DeleteStmt = stmt
parserCtx.ExecutorType = types.DeleteExecutor
}
return parserCtx
}