mirror of
https://github.com/go-gitea/gitea.git
synced 2024-08-28 15:17:26 +02:00
369 lines
8.3 KiB
Go
369 lines
8.3 KiB
Go
package core
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import (
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"database/sql"
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"database/sql/driver"
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"errors"
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"fmt"
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"reflect"
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"regexp"
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)
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func MapToSlice(query string, mp interface{}) (string, []interface{}, error) {
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vv := reflect.ValueOf(mp)
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if vv.Kind() != reflect.Ptr || vv.Elem().Kind() != reflect.Map {
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return "", []interface{}{}, ErrNoMapPointer
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}
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args := make([]interface{}, 0, len(vv.Elem().MapKeys()))
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var err error
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query = re.ReplaceAllStringFunc(query, func(src string) string {
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v := vv.Elem().MapIndex(reflect.ValueOf(src[1:]))
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if !v.IsValid() {
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err = fmt.Errorf("map key %s is missing", src[1:])
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} else {
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args = append(args, v.Interface())
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}
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return "?"
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})
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return query, args, err
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}
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func StructToSlice(query string, st interface{}) (string, []interface{}, error) {
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vv := reflect.ValueOf(st)
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if vv.Kind() != reflect.Ptr || vv.Elem().Kind() != reflect.Struct {
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return "", []interface{}{}, ErrNoStructPointer
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}
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args := make([]interface{}, 0)
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var err error
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query = re.ReplaceAllStringFunc(query, func(src string) string {
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fv := vv.Elem().FieldByName(src[1:]).Interface()
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if v, ok := fv.(driver.Valuer); ok {
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var value driver.Value
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value, err = v.Value()
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if err != nil {
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return "?"
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}
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args = append(args, value)
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} else {
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args = append(args, fv)
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}
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return "?"
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})
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if err != nil {
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return "", []interface{}{}, err
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}
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return query, args, nil
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}
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type DB struct {
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*sql.DB
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Mapper IMapper
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}
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func Open(driverName, dataSourceName string) (*DB, error) {
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db, err := sql.Open(driverName, dataSourceName)
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if err != nil {
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return nil, err
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}
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return &DB{db, NewCacheMapper(&SnakeMapper{})}, nil
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}
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func FromDB(db *sql.DB) *DB {
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return &DB{db, NewCacheMapper(&SnakeMapper{})}
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}
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func (db *DB) Query(query string, args ...interface{}) (*Rows, error) {
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rows, err := db.DB.Query(query, args...)
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if err != nil {
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if rows != nil {
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rows.Close()
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}
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return nil, err
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}
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return &Rows{rows, db.Mapper}, nil
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}
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func (db *DB) QueryMap(query string, mp interface{}) (*Rows, error) {
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query, args, err := MapToSlice(query, mp)
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if err != nil {
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return nil, err
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}
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return db.Query(query, args...)
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}
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func (db *DB) QueryStruct(query string, st interface{}) (*Rows, error) {
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query, args, err := StructToSlice(query, st)
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if err != nil {
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return nil, err
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}
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return db.Query(query, args...)
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}
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func (db *DB) QueryRow(query string, args ...interface{}) *Row {
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rows, err := db.Query(query, args...)
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if err != nil {
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return &Row{nil, err}
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}
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return &Row{rows, nil}
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}
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func (db *DB) QueryRowMap(query string, mp interface{}) *Row {
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query, args, err := MapToSlice(query, mp)
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if err != nil {
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return &Row{nil, err}
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}
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return db.QueryRow(query, args...)
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}
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func (db *DB) QueryRowStruct(query string, st interface{}) *Row {
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query, args, err := StructToSlice(query, st)
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if err != nil {
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return &Row{nil, err}
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}
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return db.QueryRow(query, args...)
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}
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type Stmt struct {
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*sql.Stmt
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Mapper IMapper
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names map[string]int
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}
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func (db *DB) Prepare(query string) (*Stmt, error) {
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names := make(map[string]int)
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var i int
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query = re.ReplaceAllStringFunc(query, func(src string) string {
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names[src[1:]] = i
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i += 1
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return "?"
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})
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stmt, err := db.DB.Prepare(query)
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if err != nil {
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return nil, err
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}
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return &Stmt{stmt, db.Mapper, names}, nil
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}
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func (s *Stmt) ExecMap(mp interface{}) (sql.Result, error) {
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vv := reflect.ValueOf(mp)
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if vv.Kind() != reflect.Ptr || vv.Elem().Kind() != reflect.Map {
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return nil, errors.New("mp should be a map's pointer")
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}
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args := make([]interface{}, len(s.names))
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for k, i := range s.names {
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args[i] = vv.Elem().MapIndex(reflect.ValueOf(k)).Interface()
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}
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return s.Stmt.Exec(args...)
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}
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func (s *Stmt) ExecStruct(st interface{}) (sql.Result, error) {
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vv := reflect.ValueOf(st)
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if vv.Kind() != reflect.Ptr || vv.Elem().Kind() != reflect.Struct {
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return nil, errors.New("mp should be a map's pointer")
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}
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args := make([]interface{}, len(s.names))
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for k, i := range s.names {
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args[i] = vv.Elem().FieldByName(k).Interface()
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}
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return s.Stmt.Exec(args...)
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}
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func (s *Stmt) Query(args ...interface{}) (*Rows, error) {
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rows, err := s.Stmt.Query(args...)
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if err != nil {
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return nil, err
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}
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return &Rows{rows, s.Mapper}, nil
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}
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func (s *Stmt) QueryMap(mp interface{}) (*Rows, error) {
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vv := reflect.ValueOf(mp)
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if vv.Kind() != reflect.Ptr || vv.Elem().Kind() != reflect.Map {
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return nil, errors.New("mp should be a map's pointer")
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}
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args := make([]interface{}, len(s.names))
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for k, i := range s.names {
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args[i] = vv.Elem().MapIndex(reflect.ValueOf(k)).Interface()
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}
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return s.Query(args...)
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}
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func (s *Stmt) QueryStruct(st interface{}) (*Rows, error) {
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vv := reflect.ValueOf(st)
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if vv.Kind() != reflect.Ptr || vv.Elem().Kind() != reflect.Struct {
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return nil, errors.New("mp should be a map's pointer")
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}
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args := make([]interface{}, len(s.names))
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for k, i := range s.names {
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args[i] = vv.Elem().FieldByName(k).Interface()
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}
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return s.Query(args...)
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}
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func (s *Stmt) QueryRow(args ...interface{}) *Row {
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rows, err := s.Query(args...)
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return &Row{rows, err}
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}
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func (s *Stmt) QueryRowMap(mp interface{}) *Row {
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vv := reflect.ValueOf(mp)
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if vv.Kind() != reflect.Ptr || vv.Elem().Kind() != reflect.Map {
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return &Row{nil, errors.New("mp should be a map's pointer")}
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}
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args := make([]interface{}, len(s.names))
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for k, i := range s.names {
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args[i] = vv.Elem().MapIndex(reflect.ValueOf(k)).Interface()
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}
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return s.QueryRow(args...)
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}
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func (s *Stmt) QueryRowStruct(st interface{}) *Row {
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vv := reflect.ValueOf(st)
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if vv.Kind() != reflect.Ptr || vv.Elem().Kind() != reflect.Struct {
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return &Row{nil, errors.New("st should be a struct's pointer")}
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}
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args := make([]interface{}, len(s.names))
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for k, i := range s.names {
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args[i] = vv.Elem().FieldByName(k).Interface()
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}
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return s.QueryRow(args...)
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}
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var (
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re = regexp.MustCompile(`[?](\w+)`)
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)
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// insert into (name) values (?)
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// insert into (name) values (?name)
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func (db *DB) ExecMap(query string, mp interface{}) (sql.Result, error) {
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query, args, err := MapToSlice(query, mp)
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if err != nil {
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return nil, err
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}
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return db.DB.Exec(query, args...)
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}
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func (db *DB) ExecStruct(query string, st interface{}) (sql.Result, error) {
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query, args, err := StructToSlice(query, st)
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if err != nil {
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return nil, err
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}
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return db.DB.Exec(query, args...)
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}
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type EmptyScanner struct {
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}
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func (EmptyScanner) Scan(src interface{}) error {
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return nil
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}
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type Tx struct {
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*sql.Tx
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Mapper IMapper
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}
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func (db *DB) Begin() (*Tx, error) {
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tx, err := db.DB.Begin()
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if err != nil {
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return nil, err
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}
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return &Tx{tx, db.Mapper}, nil
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}
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func (tx *Tx) Prepare(query string) (*Stmt, error) {
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names := make(map[string]int)
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var i int
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query = re.ReplaceAllStringFunc(query, func(src string) string {
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names[src[1:]] = i
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i += 1
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return "?"
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})
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stmt, err := tx.Tx.Prepare(query)
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if err != nil {
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return nil, err
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}
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return &Stmt{stmt, tx.Mapper, names}, nil
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}
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func (tx *Tx) Stmt(stmt *Stmt) *Stmt {
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// TODO:
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return stmt
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}
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func (tx *Tx) ExecMap(query string, mp interface{}) (sql.Result, error) {
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query, args, err := MapToSlice(query, mp)
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if err != nil {
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return nil, err
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}
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return tx.Tx.Exec(query, args...)
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}
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func (tx *Tx) ExecStruct(query string, st interface{}) (sql.Result, error) {
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query, args, err := StructToSlice(query, st)
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if err != nil {
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return nil, err
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}
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return tx.Tx.Exec(query, args...)
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}
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func (tx *Tx) Query(query string, args ...interface{}) (*Rows, error) {
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rows, err := tx.Tx.Query(query, args...)
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if err != nil {
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return nil, err
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}
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return &Rows{rows, tx.Mapper}, nil
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}
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func (tx *Tx) QueryMap(query string, mp interface{}) (*Rows, error) {
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query, args, err := MapToSlice(query, mp)
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if err != nil {
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return nil, err
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}
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return tx.Query(query, args...)
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}
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func (tx *Tx) QueryStruct(query string, st interface{}) (*Rows, error) {
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query, args, err := StructToSlice(query, st)
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if err != nil {
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return nil, err
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}
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return tx.Query(query, args...)
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}
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func (tx *Tx) QueryRow(query string, args ...interface{}) *Row {
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rows, err := tx.Query(query, args...)
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return &Row{rows, err}
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}
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func (tx *Tx) QueryRowMap(query string, mp interface{}) *Row {
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query, args, err := MapToSlice(query, mp)
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if err != nil {
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return &Row{nil, err}
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}
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return tx.QueryRow(query, args...)
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}
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func (tx *Tx) QueryRowStruct(query string, st interface{}) *Row {
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query, args, err := StructToSlice(query, st)
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if err != nil {
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return &Row{nil, err}
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}
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return tx.QueryRow(query, args...)
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}
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