mirror of
https://gitee.com/gitea/gitea.git
synced 2024-12-05 13:19:00 +08:00
5fe2ec264f
* Retry create issue to cope with duplicate keys * Use .SetExpr().Where().Insert()
228 lines
6.0 KiB
Go
228 lines
6.0 KiB
Go
// Copyright 2019 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 core
|
|
|
|
import (
|
|
"context"
|
|
"database/sql"
|
|
"database/sql/driver"
|
|
"fmt"
|
|
"reflect"
|
|
"regexp"
|
|
"sync"
|
|
)
|
|
|
|
var (
|
|
// DefaultCacheSize sets the default cache size
|
|
DefaultCacheSize = 200
|
|
)
|
|
|
|
func MapToSlice(query string, mp interface{}) (string, []interface{}, error) {
|
|
vv := reflect.ValueOf(mp)
|
|
if vv.Kind() != reflect.Ptr || vv.Elem().Kind() != reflect.Map {
|
|
return "", []interface{}{}, ErrNoMapPointer
|
|
}
|
|
|
|
args := make([]interface{}, 0, len(vv.Elem().MapKeys()))
|
|
var err error
|
|
query = re.ReplaceAllStringFunc(query, func(src string) string {
|
|
v := vv.Elem().MapIndex(reflect.ValueOf(src[1:]))
|
|
if !v.IsValid() {
|
|
err = fmt.Errorf("map key %s is missing", src[1:])
|
|
} else {
|
|
args = append(args, v.Interface())
|
|
}
|
|
return "?"
|
|
})
|
|
|
|
return query, args, err
|
|
}
|
|
|
|
func StructToSlice(query string, st interface{}) (string, []interface{}, error) {
|
|
vv := reflect.ValueOf(st)
|
|
if vv.Kind() != reflect.Ptr || vv.Elem().Kind() != reflect.Struct {
|
|
return "", []interface{}{}, ErrNoStructPointer
|
|
}
|
|
|
|
args := make([]interface{}, 0)
|
|
var err error
|
|
query = re.ReplaceAllStringFunc(query, func(src string) string {
|
|
fv := vv.Elem().FieldByName(src[1:]).Interface()
|
|
if v, ok := fv.(driver.Valuer); ok {
|
|
var value driver.Value
|
|
value, err = v.Value()
|
|
if err != nil {
|
|
return "?"
|
|
}
|
|
args = append(args, value)
|
|
} else {
|
|
args = append(args, fv)
|
|
}
|
|
return "?"
|
|
})
|
|
if err != nil {
|
|
return "", []interface{}{}, err
|
|
}
|
|
return query, args, nil
|
|
}
|
|
|
|
type cacheStruct struct {
|
|
value reflect.Value
|
|
idx int
|
|
}
|
|
|
|
// DB is a wrap of sql.DB with extra contents
|
|
type DB struct {
|
|
*sql.DB
|
|
Mapper IMapper
|
|
reflectCache map[reflect.Type]*cacheStruct
|
|
reflectCacheMutex sync.RWMutex
|
|
}
|
|
|
|
// Open opens a database
|
|
func Open(driverName, dataSourceName string) (*DB, error) {
|
|
db, err := sql.Open(driverName, dataSourceName)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return &DB{
|
|
DB: db,
|
|
Mapper: NewCacheMapper(&SnakeMapper{}),
|
|
reflectCache: make(map[reflect.Type]*cacheStruct),
|
|
}, nil
|
|
}
|
|
|
|
// FromDB creates a DB from a sql.DB
|
|
func FromDB(db *sql.DB) *DB {
|
|
return &DB{
|
|
DB: db,
|
|
Mapper: NewCacheMapper(&SnakeMapper{}),
|
|
reflectCache: make(map[reflect.Type]*cacheStruct),
|
|
}
|
|
}
|
|
|
|
func (db *DB) reflectNew(typ reflect.Type) reflect.Value {
|
|
db.reflectCacheMutex.Lock()
|
|
defer db.reflectCacheMutex.Unlock()
|
|
cs, ok := db.reflectCache[typ]
|
|
if !ok || cs.idx+1 > DefaultCacheSize-1 {
|
|
cs = &cacheStruct{reflect.MakeSlice(reflect.SliceOf(typ), DefaultCacheSize, DefaultCacheSize), 0}
|
|
db.reflectCache[typ] = cs
|
|
} else {
|
|
cs.idx = cs.idx + 1
|
|
}
|
|
return cs.value.Index(cs.idx).Addr()
|
|
}
|
|
|
|
// QueryContext overwrites sql.DB.QueryContext
|
|
func (db *DB) QueryContext(ctx context.Context, query string, args ...interface{}) (*Rows, error) {
|
|
rows, err := db.DB.QueryContext(ctx, query, args...)
|
|
if err != nil {
|
|
if rows != nil {
|
|
rows.Close()
|
|
}
|
|
return nil, err
|
|
}
|
|
return &Rows{rows, db}, nil
|
|
}
|
|
|
|
// Query overwrites sql.DB.Query
|
|
func (db *DB) Query(query string, args ...interface{}) (*Rows, error) {
|
|
return db.QueryContext(context.Background(), query, args...)
|
|
}
|
|
|
|
// QueryMapContext executes query with parameters via map and context
|
|
func (db *DB) QueryMapContext(ctx context.Context, query string, mp interface{}) (*Rows, error) {
|
|
query, args, err := MapToSlice(query, mp)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return db.QueryContext(ctx, query, args...)
|
|
}
|
|
|
|
// QueryMap executes query with parameters via map
|
|
func (db *DB) QueryMap(query string, mp interface{}) (*Rows, error) {
|
|
return db.QueryMapContext(context.Background(), query, mp)
|
|
}
|
|
|
|
func (db *DB) QueryStructContext(ctx context.Context, query string, st interface{}) (*Rows, error) {
|
|
query, args, err := StructToSlice(query, st)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return db.QueryContext(ctx, query, args...)
|
|
}
|
|
|
|
func (db *DB) QueryStruct(query string, st interface{}) (*Rows, error) {
|
|
return db.QueryStructContext(context.Background(), query, st)
|
|
}
|
|
|
|
func (db *DB) QueryRowContext(ctx context.Context, query string, args ...interface{}) *Row {
|
|
rows, err := db.QueryContext(ctx, query, args...)
|
|
if err != nil {
|
|
return &Row{nil, err}
|
|
}
|
|
return &Row{rows, nil}
|
|
}
|
|
|
|
func (db *DB) QueryRow(query string, args ...interface{}) *Row {
|
|
return db.QueryRowContext(context.Background(), query, args...)
|
|
}
|
|
|
|
func (db *DB) QueryRowMapContext(ctx context.Context, query string, mp interface{}) *Row {
|
|
query, args, err := MapToSlice(query, mp)
|
|
if err != nil {
|
|
return &Row{nil, err}
|
|
}
|
|
return db.QueryRowContext(ctx, query, args...)
|
|
}
|
|
|
|
func (db *DB) QueryRowMap(query string, mp interface{}) *Row {
|
|
return db.QueryRowMapContext(context.Background(), query, mp)
|
|
}
|
|
|
|
func (db *DB) QueryRowStructContext(ctx context.Context, query string, st interface{}) *Row {
|
|
query, args, err := StructToSlice(query, st)
|
|
if err != nil {
|
|
return &Row{nil, err}
|
|
}
|
|
return db.QueryRowContext(ctx, query, args...)
|
|
}
|
|
|
|
func (db *DB) QueryRowStruct(query string, st interface{}) *Row {
|
|
return db.QueryRowStructContext(context.Background(), query, st)
|
|
}
|
|
|
|
var (
|
|
re = regexp.MustCompile(`[?](\w+)`)
|
|
)
|
|
|
|
// ExecMapContext exec map with context.Context
|
|
// insert into (name) values (?)
|
|
// insert into (name) values (?name)
|
|
func (db *DB) ExecMapContext(ctx context.Context, query string, mp interface{}) (sql.Result, error) {
|
|
query, args, err := MapToSlice(query, mp)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return db.DB.ExecContext(ctx, query, args...)
|
|
}
|
|
|
|
func (db *DB) ExecMap(query string, mp interface{}) (sql.Result, error) {
|
|
return db.ExecMapContext(context.Background(), query, mp)
|
|
}
|
|
|
|
func (db *DB) ExecStructContext(ctx context.Context, query string, st interface{}) (sql.Result, error) {
|
|
query, args, err := StructToSlice(query, st)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return db.DB.ExecContext(ctx, query, args...)
|
|
}
|
|
|
|
func (db *DB) ExecStruct(query string, st interface{}) (sql.Result, error) {
|
|
return db.ExecStructContext(context.Background(), query, st)
|
|
}
|