database/gdb: When using pbentity in issue scan, if cache is used, timestamppb.Time conversion will report an error

[yiqiang3344]

Go version

go version go1.22.3 darwin/amd64

GoFrame version

v2.7.1

Can this bug be reproduced with the latest release?

Option Yes

What did you do?

pbentity.Blog

message Blog {
    uint32                    Id       = 1   ; // Blog ID       
    string                    Title    = 2   ; // Title         
    string                    Content  = 3   ; // Content       
    string                    Nickname = 4   ; // Nickname      
    google.protobuf.Timestamp CreateAt = 5   ; // Created Time  
    google.protobuf.Timestamp UpdateAt = 6   ; // Updated Time  
    google.protobuf.Timestamp DeleteAt = 7   ; // Deleted Time  
}

program：

	var blog *pbentity.Blog
	err := dao.Blog.Ctx(ctx).Cache(gdb.CacheOption{
		Duration: time.Hour,
		Name:     "GetById",
		Force:    false,
	}).Where(do.Blog{
		Id: id,
	}).Scan(&blog)
	return blog, err

What did you see happen?

It is ok when not using cache, but an error will be reported when using cache:
reflect.Value.Convert: value of type *gvar.Var cannot be converted to type timestamppb.Timestamp

What did you expect to see?

The result of using cache should be the same as the result of not using cache.

[wln32]

Please provide the database table structures for [dao.Blog], [pbentity.Blog], and related information to facilitate the replication of bugs

[yiqiang3344]

@wln32
dao.Blog

// =================================================================================
// This is auto-generated by GoFrame CLI tool only once. Fill this file as you wish.
// =================================================================================

package dao

import (
	"github.com/yiqiang3344/gf-micro/example/blog/internal/dao/internal"
)

// internalBlogDao is internal type for wrapping internal DAO implements.
type internalBlogDao = *internal.BlogDao

// blogDao is the data access object for table blog.
// You can define custom methods on it to extend its functionality as you wish.
type blogDao struct {
	internalBlogDao
}

var (
	// Blog is globally public accessible object for table blog operations.
	Blog = blogDao{
		internal.NewBlogDao(),
	}
)

// Fill with you ideas below.

dao.internal.blog

// ==========================================================================
// Code generated and maintained by GoFrame CLI tool. DO NOT EDIT.
// ==========================================================================

package internal

import (
	"context"

	"github.com/gogf/gf/v2/database/gdb"
	"github.com/gogf/gf/v2/frame/g"
)

// BlogDao is the data access object for table blog.
type BlogDao struct {
	table   string      // table is the underlying table name of the DAO.
	group   string      // group is the database configuration group name of current DAO.
	columns BlogColumns // columns contains all the column names of Table for convenient usage.
}

// BlogColumns defines and stores column names for table blog.
type BlogColumns struct {
	Id       string // Blog ID
	Title    string // Title
	Content  string // Content
	Nickname string // Nickname
	CreateAt string // Created Time
	UpdateAt string // Updated Time
	DeleteAt string // Deleted Time
}

// blogColumns holds the columns for table blog.
var blogColumns = BlogColumns{
	Id:       "id",
	Title:    "title",
	Content:  "content",
	Nickname: "nickname",
	CreateAt: "create_at",
	UpdateAt: "update_at",
	DeleteAt: "delete_at",
}

// NewBlogDao creates and returns a new DAO object for table data access.
func NewBlogDao() *BlogDao {
	return &BlogDao{
		group:   "default",
		table:   "blog",
		columns: blogColumns,
	}
}

// DB retrieves and returns the underlying raw database management object of current DAO.
func (dao *BlogDao) DB() gdb.DB {
	return g.DB(dao.group)
}

// Table returns the table name of current dao.
func (dao *BlogDao) Table() string {
	return dao.table
}

// Columns returns all column names of current dao.
func (dao *BlogDao) Columns() BlogColumns {
	return dao.columns
}

// Group returns the configuration group name of database of current dao.
func (dao *BlogDao) Group() string {
	return dao.group
}

// Ctx creates and returns the Model for current DAO, It automatically sets the context for current operation.
func (dao *BlogDao) Ctx(ctx context.Context) *gdb.Model {
	return dao.DB().Model(dao.table).Safe().Ctx(ctx)
}

// Transaction wraps the transaction logic using function f.
// It rollbacks the transaction and returns the error from function f if it returns non-nil error.
// It commits the transaction and returns nil if function f returns nil.
//
// Note that, you should not Commit or Rollback the transaction in function f
// as it is automatically handled by this function.
func (dao *BlogDao) Transaction(ctx context.Context, f func(ctx context.Context, tx gdb.TX) error) (err error) {
	return dao.Ctx(ctx).Transaction(ctx, f)
}

pbentity.blog.proto

// ==========================================================================
// Code generated and maintained by GoFrame CLI tool. DO NOT EDIT.
// ==========================================================================

syntax = "proto3";

package pbentity;

option go_package = "github.com/yiqiang3344/gf-micro/example/blog/api/pbentity";

import "google/protobuf/timestamp.proto";

message Blog {
    uint32                    Id       = 1   ; // Blog ID       
    string                    Title    = 2   ; // Title         
    string                    Content  = 3   ; // Content       
    string                    Nickname = 4   ; // Nickname      
    google.protobuf.Timestamp CreateAt = 5   ; // Created Time  
    google.protobuf.Timestamp UpdateAt = 6   ; // Updated Time  
    google.protobuf.Timestamp DeleteAt = 7   ; // Deleted Time  
}

[gqcn]

@yiqiang3344 @wln32 Duplicated with issue #3571 , I think it might be better provide a timestamp type for grpc under contrib/grpc/timestappb that implements UnmarshalValue(interface{}) error, and replace the imported google.golang.org/protobuf/types/known/timestamppb to github.com/gogf/contrib/grpc/timestamppb in CLI when generating pbentity.

Another way is to provide grpc proto and types as gtime.Time.

[github-actions]

Hello @yiqiang3344. We like your proposal/feedback and would appreciate a contribution via a Pull Request by you or another community member. We thank you in advance for your contribution and are looking forward to reviewing it!
你好 @yiqiang3344。我们喜欢您的提案/反馈，并希望您或其他社区成员通过拉取请求做出贡献。我们提前感谢您的贡献，并期待对其进行审查。

[gqcn]

Also related #2409