2025-06-20 23:29:59 +08:00
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package modelOperator
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import (
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"context"
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"fmt"
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"game/common/proto/pb"
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"game/common/serialization"
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"game/common/utils"
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"github.com/fox/fox/log"
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"github.com/go-redis/redis/v8"
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"gorm.io/gorm"
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"reflect"
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"strconv"
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"time"
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)
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const (
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TableExpire = 7 * 24 * time.Hour // 七天后过期
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)
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type iTable interface {
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GetId() int64
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GetIdName() string
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TableName() string
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}
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/*
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T:Table,如果不想操作redis则将rds设置为nil
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*/
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type TableOp[T iTable] struct {
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db *gorm.DB
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rds *redis.Client
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}
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func NewTableOp[T iTable](db *gorm.DB, rds *redis.Client) *TableOp[T] {
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return &TableOp[T]{db: db.Debug(), rds: rds}
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}
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func (s *TableOp[T]) tableName() string {
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var result utils.TValue[T]
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return result.V.TableName()
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}
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func (s *TableOp[T]) redisKey(id int64) string {
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return fmt.Sprintf("%s:%d", s.tableName(), id)
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}
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// 查找并返回结构体
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func (s *TableOp[T]) findByRedis(id int64) *T {
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maps := s.findByRedisMaps(id)
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if len(maps) == 0 {
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return nil
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}
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us, err := serialization.MapToStruct[T](maps)
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if err != nil {
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log.ErrorF("serialization map to struct err: %v", err)
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return nil
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}
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//log.DebugF("findByRedis redis-key:%v result:%v", s.redisKey(id), us)
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return us
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}
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// 查找并返回map
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func (s *TableOp[T]) findByRedisMaps(id int64) map[string]string {
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if s.rds == nil {
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return nil
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}
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maps, err := s.rds.HGetAll(context.Background(), s.redisKey(id)).Result()
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if err != nil {
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log.ErrorF("redis-key:%v HGetAll err: %v", s.redisKey(id), err)
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return nil
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}
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if len(maps) == 0 {
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return nil
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}
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return maps
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}
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func (s *TableOp[T]) writeRedis(id int64, t *T) {
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if s.rds == nil {
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return
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}
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maps := serialization.StructToMap(t)
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if len(maps) == 0 {
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log.ErrorF("table struct is empty:%v", s.tableName())
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}
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s.updateRedis(id, maps)
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}
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// 查看在redis中是否存在
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func (s *TableOp[T]) existRedis(t *T) bool {
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if s.rds == nil {
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return false
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}
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// 查看redis中是否存在该键
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exist, _ := s.rds.Exists(context.Background(), s.redisKey((*t).GetId())).Result()
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return exist == 1
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}
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func (s *TableOp[T]) updateRedis(id int64, maps map[string]any) {
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if s.rds == nil {
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return
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}
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if err := s.rds.HMSet(context.Background(), s.redisKey(id), maps).Err(); err != nil {
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log.ErrorF("redis-key:%v HMSet err: %v", s.redisKey(id), err)
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}
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_ = s.rds.Expire(context.Background(), s.redisKey(id), TableExpire).Err()
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}
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func (s *TableOp[T]) deleteRedis(id int64) {
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if s.rds == nil {
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return
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}
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_ = s.rds.Del(context.Background(), s.redisKey(id)).Err()
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}
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func (s *TableOp[T]) Create(t *T) (*T, pb.ErrCode) {
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if err := s.db.Create(t).Error; err != nil {
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log.ErrorF("create table:%v err:%v", s.tableName(), err)
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return nil, pb.ErrCode_SystemErr
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}
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s.writeRedis((*t).GetId(), t)
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return t, pb.ErrCode_OK
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}
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func (s *TableOp[T]) Find(id int64) (*T, pb.ErrCode) {
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// 先从redis中查询,redis中没有则从mysql中查询
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if table := s.findByRedis(id); table != nil {
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return table, pb.ErrCode_OK
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}
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var result utils.TValue[T]
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err := s.db.Where(result.V.GetIdName()+" = ?", id).First(&result.V).Error
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if err != nil {
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log.DebugF("find table:%v id:%v err:%v", s.tableName(), id, err)
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return nil, pb.ErrCode_SystemErr
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}
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return &result.V, pb.ErrCode_OK
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}
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// 根据条件查询,只在mysql中查询,无法在redis中查询
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func (s *TableOp[T]) FindCondition(condition map[string]any) (*T, pb.ErrCode) {
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us := new(T)
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err := s.db.Where(condition).First(us).Error
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if err != nil {
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log.ErrorF("find table:%v condition:%v err:%v", s.tableName(), utils.JsonMarshal(condition), err)
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return nil, pb.ErrCode_SystemErr
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}
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// 查看redis中是否存在该键,不存在则写入数据
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if !s.existRedis(us) {
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s.writeRedis((*us).GetId(), us)
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}
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return us, pb.ErrCode_OK
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}
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func (s *TableOp[T]) Update(id int64, updates map[string]any) (*T, pb.ErrCode) {
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var result utils.TValue[T]
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err := s.db.Model(&result.V).Where(result.V.GetIdName()+" = ?", id).Updates(updates).Error
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if err != nil {
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log.ErrorF("update table:%v id:%v err:%v", s.tableName(), id, err)
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return nil, pb.ErrCode_SystemErr
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}
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s.updateRedis(id, updates)
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return &result.V, pb.ErrCode_OK
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}
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// 辅助函数:将map的keys转为字符串slice
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func keysToStringSlice(m map[string]int64) []string {
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keys := make([]string, 0, len(m))
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for k := range m {
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keys = append(keys, k)
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}
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return keys
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}
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// 获取资源
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func (s *TableOp[T]) GetInt(id int64, resName []string) (map[string]int64, pb.ErrCode) {
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mapFields := s.findByRedisMaps(id)
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// 查询更新后的值到map
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updatedValues := make(map[string]int64)
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if len(mapFields) != 0 {
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for _, name := range resName {
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v, _ := strconv.ParseInt(mapFields[name], 10, 64)
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updatedValues[name] = v
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}
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return updatedValues, pb.ErrCode_OK
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}
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var result utils.TValue[T]
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// redis中没有值,从表中加载并写入redis
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mapAny := make(map[string]any)
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err := s.db.Model(new(T)).
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Where(result.V.GetIdName()+" = ?", id).
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Take(&mapAny). // 扫描到map
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Error
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if err != nil {
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log.ErrorF("query updated values table:%v id:%v err:%v", s.tableName(), id, err)
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return nil, pb.ErrCode_SystemErr
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}
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s.updateRedis(id, mapAny)
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// 查询更新后的值到map
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updatedValues = make(map[string]int64)
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for _, name := range resName {
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if val, ok := mapAny[name]; ok {
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var v64 int64
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switch v := val.(type) {
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case int64:
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v64 = v
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case int, int32, uint, uint32, uint64:
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v64 = reflect.ValueOf(v).Int()
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case float32, float64:
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v64 = int64(reflect.ValueOf(v).Float())
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default:
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// 处理无法转换的情况
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}
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updatedValues[name] = v64
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}
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}
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return updatedValues, pb.ErrCode_OK
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}
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// 增加或减少资源
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func (s *TableOp[T]) AddInt(id int64, res map[string]int64) (map[string]int64, pb.ErrCode) {
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addRes := map[string]any{}
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for k, v := range res {
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addRes[k] = gorm.Expr(fmt.Sprintf("%v + ?", k), v)
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}
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var result utils.TValue[T]
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err := s.db.Model(&result.V).Where(result.V.GetIdName()+" = ?", id).Updates(addRes).Error
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if err != nil {
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log.ErrorF("add table:%v id:%v err:%v", s.tableName(), id, err)
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return nil, pb.ErrCode_SystemErr
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}
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rows, err := s.db.Model(&result.V).
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Select(keysToStringSlice(res)). // 只选择需要返回的字段
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Where(result.V.GetIdName()+" = ?", id).
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Rows()
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if err != nil {
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log.ErrorF("query updated values table:%v id:%v err:%v", s.tableName(), id, err)
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return nil, pb.ErrCode_SystemErr
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}
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defer func() { _ = rows.Close() }() // 确保关闭
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// 查询更新后的值到map
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updatedValues := make(map[string]int64)
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// 手动扫描到 map
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if rows.Next() {
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columns, _ := rows.Columns()
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values := make([]interface{}, len(columns))
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for i := range values {
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values[i] = new(int64) // 假设所有字段都是 int64
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}
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err = rows.Scan(values...)
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if err != nil {
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log.ErrorF("scan updated values err:%v", err)
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return nil, pb.ErrCode_SystemErr
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}
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for i, col := range columns {
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updatedValues[col] = *(values[i].(*int64))
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}
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} else {
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return nil, pb.ErrCode_SystemErr // 无记录
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}
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mapAny := make(map[string]any)
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for k, v := range updatedValues {
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mapAny[k] = v
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}
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s.updateRedis(id, mapAny)
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return updatedValues, pb.ErrCode_OK
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}
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func (s *TableOp[T]) Delete(id int64) (*T, pb.ErrCode) {
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var result utils.TValue[T]
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err := s.db.Delete(&result.V, id).Error
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if err != nil {
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log.ErrorF("delete table:%v err:%v", s.tableName(), err)
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return nil, pb.ErrCode_SystemErr
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}
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s.deleteRedis(id)
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return &result.V, pb.ErrCode_OK
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}
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