mirror of
https://codeberg.org/forgejo/forgejo.git
synced 2024-12-15 11:58:11 -05:00
572 lines
14 KiB
Go
Vendored
572 lines
14 KiB
Go
Vendored
// Copyright 2015 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 dialects
|
|
|
|
import (
|
|
"context"
|
|
"database/sql"
|
|
"errors"
|
|
"fmt"
|
|
"regexp"
|
|
"strings"
|
|
|
|
"xorm.io/xorm/core"
|
|
"xorm.io/xorm/schemas"
|
|
)
|
|
|
|
var (
|
|
sqlite3ReservedWords = map[string]bool{
|
|
"ABORT": true,
|
|
"ACTION": true,
|
|
"ADD": true,
|
|
"AFTER": true,
|
|
"ALL": true,
|
|
"ALTER": true,
|
|
"ANALYZE": true,
|
|
"AND": true,
|
|
"AS": true,
|
|
"ASC": true,
|
|
"ATTACH": true,
|
|
"AUTOINCREMENT": true,
|
|
"BEFORE": true,
|
|
"BEGIN": true,
|
|
"BETWEEN": true,
|
|
"BY": true,
|
|
"CASCADE": true,
|
|
"CASE": true,
|
|
"CAST": true,
|
|
"CHECK": true,
|
|
"COLLATE": true,
|
|
"COLUMN": true,
|
|
"COMMIT": true,
|
|
"CONFLICT": true,
|
|
"CONSTRAINT": true,
|
|
"CREATE": true,
|
|
"CROSS": true,
|
|
"CURRENT_DATE": true,
|
|
"CURRENT_TIME": true,
|
|
"CURRENT_TIMESTAMP": true,
|
|
"DATABASE": true,
|
|
"DEFAULT": true,
|
|
"DEFERRABLE": true,
|
|
"DEFERRED": true,
|
|
"DELETE": true,
|
|
"DESC": true,
|
|
"DETACH": true,
|
|
"DISTINCT": true,
|
|
"DROP": true,
|
|
"EACH": true,
|
|
"ELSE": true,
|
|
"END": true,
|
|
"ESCAPE": true,
|
|
"EXCEPT": true,
|
|
"EXCLUSIVE": true,
|
|
"EXISTS": true,
|
|
"EXPLAIN": true,
|
|
"FAIL": true,
|
|
"FOR": true,
|
|
"FOREIGN": true,
|
|
"FROM": true,
|
|
"FULL": true,
|
|
"GLOB": true,
|
|
"GROUP": true,
|
|
"HAVING": true,
|
|
"IF": true,
|
|
"IGNORE": true,
|
|
"IMMEDIATE": true,
|
|
"IN": true,
|
|
"INDEX": true,
|
|
"INDEXED": true,
|
|
"INITIALLY": true,
|
|
"INNER": true,
|
|
"INSERT": true,
|
|
"INSTEAD": true,
|
|
"INTERSECT": true,
|
|
"INTO": true,
|
|
"IS": true,
|
|
"ISNULL": true,
|
|
"JOIN": true,
|
|
"KEY": true,
|
|
"LEFT": true,
|
|
"LIKE": true,
|
|
"LIMIT": true,
|
|
"MATCH": true,
|
|
"NATURAL": true,
|
|
"NO": true,
|
|
"NOT": true,
|
|
"NOTNULL": true,
|
|
"NULL": true,
|
|
"OF": true,
|
|
"OFFSET": true,
|
|
"ON": true,
|
|
"OR": true,
|
|
"ORDER": true,
|
|
"OUTER": true,
|
|
"PLAN": true,
|
|
"PRAGMA": true,
|
|
"PRIMARY": true,
|
|
"QUERY": true,
|
|
"RAISE": true,
|
|
"RECURSIVE": true,
|
|
"REFERENCES": true,
|
|
"REGEXP": true,
|
|
"REINDEX": true,
|
|
"RELEASE": true,
|
|
"RENAME": true,
|
|
"REPLACE": true,
|
|
"RESTRICT": true,
|
|
"RIGHT": true,
|
|
"ROLLBACK": true,
|
|
"ROW": true,
|
|
"SAVEPOINT": true,
|
|
"SELECT": true,
|
|
"SET": true,
|
|
"TABLE": true,
|
|
"TEMP": true,
|
|
"TEMPORARY": true,
|
|
"THEN": true,
|
|
"TO": true,
|
|
"TRANSACTI": true,
|
|
"TRIGGER": true,
|
|
"UNION": true,
|
|
"UNIQUE": true,
|
|
"UPDATE": true,
|
|
"USING": true,
|
|
"VACUUM": true,
|
|
"VALUES": true,
|
|
"VIEW": true,
|
|
"VIRTUAL": true,
|
|
"WHEN": true,
|
|
"WHERE": true,
|
|
"WITH": true,
|
|
"WITHOUT": true,
|
|
}
|
|
|
|
sqlite3Quoter = schemas.Quoter{
|
|
Prefix: '`',
|
|
Suffix: '`',
|
|
IsReserved: schemas.AlwaysReserve,
|
|
}
|
|
)
|
|
|
|
type sqlite3 struct {
|
|
Base
|
|
}
|
|
|
|
func (db *sqlite3) Init(uri *URI) error {
|
|
db.quoter = sqlite3Quoter
|
|
return db.Base.Init(db, uri)
|
|
}
|
|
|
|
func (db *sqlite3) Version(ctx context.Context, queryer core.Queryer) (*schemas.Version, error) {
|
|
rows, err := queryer.QueryContext(ctx, "SELECT sqlite_version()")
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer rows.Close()
|
|
|
|
var version string
|
|
if !rows.Next() {
|
|
if rows.Err() != nil {
|
|
return nil, rows.Err()
|
|
}
|
|
return nil, errors.New("unknow version")
|
|
}
|
|
|
|
if err := rows.Scan(&version); err != nil {
|
|
return nil, err
|
|
}
|
|
return &schemas.Version{
|
|
Number: version,
|
|
Edition: "sqlite",
|
|
}, nil
|
|
}
|
|
|
|
func (db *sqlite3) SetQuotePolicy(quotePolicy QuotePolicy) {
|
|
switch quotePolicy {
|
|
case QuotePolicyNone:
|
|
var q = sqlite3Quoter
|
|
q.IsReserved = schemas.AlwaysNoReserve
|
|
db.quoter = q
|
|
case QuotePolicyReserved:
|
|
var q = sqlite3Quoter
|
|
q.IsReserved = db.IsReserved
|
|
db.quoter = q
|
|
case QuotePolicyAlways:
|
|
fallthrough
|
|
default:
|
|
db.quoter = sqlite3Quoter
|
|
}
|
|
}
|
|
|
|
func (db *sqlite3) SQLType(c *schemas.Column) string {
|
|
switch t := c.SQLType.Name; t {
|
|
case schemas.Bool:
|
|
if c.Default == "true" {
|
|
c.Default = "1"
|
|
} else if c.Default == "false" {
|
|
c.Default = "0"
|
|
}
|
|
return schemas.Integer
|
|
case schemas.Date, schemas.DateTime, schemas.TimeStamp, schemas.Time:
|
|
return schemas.DateTime
|
|
case schemas.TimeStampz:
|
|
return schemas.Text
|
|
case schemas.Char, schemas.Varchar, schemas.NVarchar, schemas.TinyText,
|
|
schemas.Text, schemas.MediumText, schemas.LongText, schemas.Json:
|
|
return schemas.Text
|
|
case schemas.Bit, schemas.TinyInt, schemas.UnsignedTinyInt, schemas.SmallInt,
|
|
schemas.UnsignedSmallInt, schemas.MediumInt, schemas.Int, schemas.UnsignedInt,
|
|
schemas.BigInt, schemas.UnsignedBigInt, schemas.Integer:
|
|
return schemas.Integer
|
|
case schemas.Float, schemas.Double, schemas.Real:
|
|
return schemas.Real
|
|
case schemas.Decimal, schemas.Numeric:
|
|
return schemas.Numeric
|
|
case schemas.TinyBlob, schemas.Blob, schemas.MediumBlob, schemas.LongBlob, schemas.Bytea, schemas.Binary, schemas.VarBinary:
|
|
return schemas.Blob
|
|
case schemas.Serial, schemas.BigSerial:
|
|
c.IsPrimaryKey = true
|
|
c.IsAutoIncrement = true
|
|
c.Nullable = false
|
|
return schemas.Integer
|
|
default:
|
|
return t
|
|
}
|
|
}
|
|
|
|
func (db *sqlite3) ColumnTypeKind(t string) int {
|
|
switch strings.ToUpper(t) {
|
|
case "DATETIME":
|
|
return schemas.TIME_TYPE
|
|
case "TEXT":
|
|
return schemas.TEXT_TYPE
|
|
case "INTEGER", "REAL", "NUMERIC", "DECIMAL":
|
|
return schemas.NUMERIC_TYPE
|
|
case "BLOB":
|
|
return schemas.BLOB_TYPE
|
|
default:
|
|
return schemas.UNKNOW_TYPE
|
|
}
|
|
}
|
|
|
|
func (db *sqlite3) IsReserved(name string) bool {
|
|
_, ok := sqlite3ReservedWords[strings.ToUpper(name)]
|
|
return ok
|
|
}
|
|
|
|
func (db *sqlite3) AutoIncrStr() string {
|
|
return "AUTOINCREMENT"
|
|
}
|
|
|
|
func (db *sqlite3) IndexCheckSQL(tableName, idxName string) (string, []interface{}) {
|
|
args := []interface{}{idxName}
|
|
return "SELECT name FROM sqlite_master WHERE type='index' and name = ?", args
|
|
}
|
|
|
|
func (db *sqlite3) IsTableExist(queryer core.Queryer, ctx context.Context, tableName string) (bool, error) {
|
|
return db.HasRecords(queryer, ctx, "SELECT name FROM sqlite_master WHERE type='table' and name = ?", tableName)
|
|
}
|
|
|
|
func (db *sqlite3) DropIndexSQL(tableName string, index *schemas.Index) string {
|
|
// var unique string
|
|
idxName := index.Name
|
|
|
|
if !strings.HasPrefix(idxName, "UQE_") &&
|
|
!strings.HasPrefix(idxName, "IDX_") {
|
|
if index.Type == schemas.UniqueType {
|
|
idxName = fmt.Sprintf("UQE_%v_%v", tableName, index.Name)
|
|
} else {
|
|
idxName = fmt.Sprintf("IDX_%v_%v", tableName, index.Name)
|
|
}
|
|
}
|
|
return fmt.Sprintf("DROP INDEX %v", db.Quoter().Quote(idxName))
|
|
}
|
|
|
|
func (db *sqlite3) ForUpdateSQL(query string) string {
|
|
return query
|
|
}
|
|
|
|
func (db *sqlite3) IsColumnExist(queryer core.Queryer, ctx context.Context, tableName, colName string) (bool, error) {
|
|
query := "SELECT * FROM " + tableName + " LIMIT 0"
|
|
rows, err := queryer.QueryContext(ctx, query)
|
|
if err != nil {
|
|
return false, err
|
|
}
|
|
defer rows.Close()
|
|
|
|
cols, err := rows.Columns()
|
|
if err != nil {
|
|
return false, err
|
|
}
|
|
|
|
for _, col := range cols {
|
|
if strings.EqualFold(col, colName) {
|
|
return true, nil
|
|
}
|
|
}
|
|
|
|
return false, nil
|
|
}
|
|
|
|
// splitColStr splits a sqlite col strings as fields
|
|
func splitColStr(colStr string) []string {
|
|
colStr = strings.TrimSpace(colStr)
|
|
var results = make([]string, 0, 10)
|
|
var lastIdx int
|
|
var hasC, hasQuote bool
|
|
for i, c := range colStr {
|
|
if c == ' ' && !hasQuote {
|
|
if hasC {
|
|
results = append(results, colStr[lastIdx:i])
|
|
hasC = false
|
|
}
|
|
} else {
|
|
if c == '\'' {
|
|
hasQuote = !hasQuote
|
|
}
|
|
if !hasC {
|
|
lastIdx = i
|
|
}
|
|
hasC = true
|
|
if i == len(colStr)-1 {
|
|
results = append(results, colStr[lastIdx:i+1])
|
|
}
|
|
}
|
|
}
|
|
return results
|
|
}
|
|
|
|
func parseString(colStr string) (*schemas.Column, error) {
|
|
fields := splitColStr(colStr)
|
|
col := new(schemas.Column)
|
|
col.Indexes = make(map[string]int)
|
|
col.Nullable = true
|
|
col.DefaultIsEmpty = true
|
|
|
|
for idx, field := range fields {
|
|
if idx == 0 {
|
|
col.Name = strings.Trim(strings.Trim(field, "`[] "), `"`)
|
|
continue
|
|
} else if idx == 1 {
|
|
col.SQLType = schemas.SQLType{Name: field, DefaultLength: 0, DefaultLength2: 0}
|
|
continue
|
|
}
|
|
switch field {
|
|
case "PRIMARY":
|
|
col.IsPrimaryKey = true
|
|
case "AUTOINCREMENT":
|
|
col.IsAutoIncrement = true
|
|
case "NULL":
|
|
if fields[idx-1] == "NOT" {
|
|
col.Nullable = false
|
|
} else {
|
|
col.Nullable = true
|
|
}
|
|
case "DEFAULT":
|
|
col.Default = fields[idx+1]
|
|
col.DefaultIsEmpty = false
|
|
}
|
|
}
|
|
return col, nil
|
|
}
|
|
|
|
func (db *sqlite3) GetColumns(queryer core.Queryer, ctx context.Context, tableName string) ([]string, map[string]*schemas.Column, error) {
|
|
args := []interface{}{tableName}
|
|
s := "SELECT sql FROM sqlite_master WHERE type='table' and name = ?"
|
|
|
|
rows, err := queryer.QueryContext(ctx, s, args...)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
defer rows.Close()
|
|
|
|
var name string
|
|
if rows.Next() {
|
|
err = rows.Scan(&name)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
}
|
|
if rows.Err() != nil {
|
|
return nil, nil, rows.Err()
|
|
}
|
|
|
|
if name == "" {
|
|
return nil, nil, errors.New("no table named " + tableName)
|
|
}
|
|
|
|
nStart := strings.Index(name, "(")
|
|
nEnd := strings.LastIndex(name, ")")
|
|
reg := regexp.MustCompile(`[^\(,\)]*(\([^\(]*\))?`)
|
|
colCreates := reg.FindAllString(name[nStart+1:nEnd], -1)
|
|
cols := make(map[string]*schemas.Column)
|
|
colSeq := make([]string, 0)
|
|
|
|
for _, colStr := range colCreates {
|
|
reg = regexp.MustCompile(`,\s`)
|
|
colStr = reg.ReplaceAllString(colStr, ",")
|
|
if strings.HasPrefix(strings.TrimSpace(colStr), "PRIMARY KEY") {
|
|
parts := strings.Split(strings.TrimSpace(colStr), "(")
|
|
if len(parts) == 2 {
|
|
pkCols := strings.Split(strings.TrimRight(strings.TrimSpace(parts[1]), ")"), ",")
|
|
for _, pk := range pkCols {
|
|
if col, ok := cols[strings.Trim(strings.TrimSpace(pk), "`")]; ok {
|
|
col.IsPrimaryKey = true
|
|
}
|
|
}
|
|
}
|
|
continue
|
|
}
|
|
|
|
col, err := parseString(colStr)
|
|
if err != nil {
|
|
return colSeq, cols, err
|
|
}
|
|
|
|
cols[col.Name] = col
|
|
colSeq = append(colSeq, col.Name)
|
|
}
|
|
return colSeq, cols, nil
|
|
}
|
|
|
|
func (db *sqlite3) GetTables(queryer core.Queryer, ctx context.Context) ([]*schemas.Table, error) {
|
|
args := []interface{}{}
|
|
s := "SELECT name FROM sqlite_master WHERE type='table'"
|
|
|
|
rows, err := queryer.QueryContext(ctx, s, args...)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer rows.Close()
|
|
|
|
tables := make([]*schemas.Table, 0)
|
|
for rows.Next() {
|
|
table := schemas.NewEmptyTable()
|
|
err = rows.Scan(&table.Name)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if table.Name == "sqlite_sequence" {
|
|
continue
|
|
}
|
|
tables = append(tables, table)
|
|
}
|
|
if rows.Err() != nil {
|
|
return nil, rows.Err()
|
|
}
|
|
return tables, nil
|
|
}
|
|
|
|
func (db *sqlite3) GetIndexes(queryer core.Queryer, ctx context.Context, tableName string) (map[string]*schemas.Index, error) {
|
|
args := []interface{}{tableName}
|
|
s := "SELECT sql FROM sqlite_master WHERE type='index' and tbl_name = ?"
|
|
|
|
rows, err := queryer.QueryContext(ctx, s, args...)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer rows.Close()
|
|
|
|
indexes := make(map[string]*schemas.Index)
|
|
for rows.Next() {
|
|
var tmpSQL sql.NullString
|
|
err = rows.Scan(&tmpSQL)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if !tmpSQL.Valid {
|
|
continue
|
|
}
|
|
sql := tmpSQL.String
|
|
|
|
index := new(schemas.Index)
|
|
nNStart := strings.Index(sql, "INDEX")
|
|
nNEnd := strings.Index(sql, "ON")
|
|
if nNStart == -1 || nNEnd == -1 {
|
|
continue
|
|
}
|
|
|
|
indexName := strings.Trim(strings.TrimSpace(sql[nNStart+6:nNEnd]), "`[]'\"")
|
|
var isRegular bool
|
|
if strings.HasPrefix(indexName, "IDX_"+tableName) || strings.HasPrefix(indexName, "UQE_"+tableName) {
|
|
index.Name = indexName[5+len(tableName):]
|
|
isRegular = true
|
|
} else {
|
|
index.Name = indexName
|
|
}
|
|
|
|
if strings.HasPrefix(sql, "CREATE UNIQUE INDEX") {
|
|
index.Type = schemas.UniqueType
|
|
} else {
|
|
index.Type = schemas.IndexType
|
|
}
|
|
|
|
nStart := strings.Index(sql, "(")
|
|
nEnd := strings.Index(sql, ")")
|
|
colIndexes := strings.Split(sql[nStart+1:nEnd], ",")
|
|
|
|
index.Cols = make([]string, 0)
|
|
for _, col := range colIndexes {
|
|
index.Cols = append(index.Cols, strings.Trim(col, "` []"))
|
|
}
|
|
index.IsRegular = isRegular
|
|
indexes[index.Name] = index
|
|
}
|
|
if rows.Err() != nil {
|
|
return nil, rows.Err()
|
|
}
|
|
|
|
return indexes, nil
|
|
}
|
|
|
|
func (db *sqlite3) Filters() []Filter {
|
|
return []Filter{}
|
|
}
|
|
|
|
type sqlite3Driver struct {
|
|
baseDriver
|
|
}
|
|
|
|
func (p *sqlite3Driver) Features() *DriverFeatures {
|
|
return &DriverFeatures{
|
|
SupportReturnInsertedID: true,
|
|
}
|
|
}
|
|
|
|
func (p *sqlite3Driver) Parse(driverName, dataSourceName string) (*URI, error) {
|
|
if strings.Contains(dataSourceName, "?") {
|
|
dataSourceName = dataSourceName[:strings.Index(dataSourceName, "?")]
|
|
}
|
|
|
|
return &URI{DBType: schemas.SQLITE, DBName: dataSourceName}, nil
|
|
}
|
|
|
|
func (p *sqlite3Driver) GenScanResult(colType string) (interface{}, error) {
|
|
switch colType {
|
|
case "TEXT":
|
|
var s sql.NullString
|
|
return &s, nil
|
|
case "INTEGER":
|
|
var s sql.NullInt64
|
|
return &s, nil
|
|
case "DATETIME":
|
|
var s sql.NullTime
|
|
return &s, nil
|
|
case "REAL":
|
|
var s sql.NullFloat64
|
|
return &s, nil
|
|
case "NUMERIC", "DECIMAL":
|
|
var s sql.NullString
|
|
return &s, nil
|
|
case "BLOB":
|
|
var s sql.RawBytes
|
|
return &s, nil
|
|
default:
|
|
var r sql.NullString
|
|
return &r, nil
|
|
}
|
|
}
|