Delta Lak传统关系型数据库e: High-Performance ACID Table Storage over Cloud Object Stores

创建业务用户

区别于身份管理模块(Identity模块)的鉴权用户IdentityUser,业务用户(BusinessUser)是围绕业务系统中“用户”这一定义的领域模型。如:在一个医院系统中,业务用户可以是医生、护士、患者;在一个OA系统中,业务用户可以是员工、管理员、客户等。

业务用户和鉴权用户由同步机制关联,业务用户通过分布式事件(DistributedEvent)的同步器(Synchronizer)与鉴权用户关联同步。

在Health业务模块中,定义两种业务用户:

Client: 客户;

Employee: 员工。

这些业务用户继承自HealthUser,HealthUser是业务用户的基类,包含了业务用户的基本信息,如姓名,性别,出生日期,身份证号等。并且需要实现IUpdateUserData接口,以便在同步鉴权用户信息时,更新业务用户的基本信息。

Employee包含工号,职称,简介等信息。其领域模型定义如下:

public class Employee : HealthUser<Guid>, IUser, IUpdateUserData
{
    [StringLength(12)]
    public string EmployeeNumber { get; set; }

    [StringLength(64)]
    public string EmployeeTitle { get; set; }

    public string Introduction { get; set; }

    ...
}

Client包含客户号,身高,体重,婚姻状况等信息。其领域模型定义如下:

public class Client : HealthUser<Guid>, IUser, IUpdateUserData
{

    //unique

    [StringLength(12)]
    public string ClientNumber { get; set; }

    public string ClientNumberType { get; set; }

    [Range(0.0, 250.0)]
    public double? Height { get; set; }


    [Range(0.0, 1000.0)]
    public double? Weight { get; set; }

    public string Marriage { get; set; }

    public string Status { get; set; }
}

创建业务用户同步器

以Client为例,ClientLookupService是业务用户的查询服务,其基类UserLookupService定义了关联用户的查询接口,包括按ID查询,按用户名查询,按组织架构查询,按户关系查询等。

创建ClientLookupService, 代码如下

public class ClientLookupService : UserLookupService<Client, IClientRepository>, IClientLookupService
{
    public ClientLookupService(
        IClientRepository userRepository,
        IUnitOfWorkManager unitOfWorkManager)
        : base(
            userRepository,
            unitOfWorkManager)
    {

    }

    protected override Client CreateUser(IUserData externalUser)
    {
        return new Client(externalUser);
    }
}

同步器订阅了分布式事件EntityUpdatedEto,当鉴权用户更新时,同步器将更新业务用户的基本信息。

创建ClientSynchronizer,代码如下

public class ClientSynchronizer :
        IDistributedEventHandler<EntityUpdatedEto<UserEto>>,
    ITransientDependency
{
    protected IClientRepository UserRepository { get; }
    protected IClientLookupService UserLookupService { get; }

    public ClientSynchronizer(
        IClientRepository userRepository,
        IClientLookupService userLookupService)
    {
        UserRepository = userRepository;
        UserLookupService = userLookupService;
    }

    public async Task HandleEventAsync(EntityUpdatedEto<UserEto> eventData)
    {
        var user = await UserRepository.FindAsync(eventData.Entity.Id);
        if (user != null)
        {
            if (user.Update(eventData.Entity))
            {
                await UserRepository.UpdateAsync(user);
            }
        }
    }
}

创建业务用户应用服务

以Employee为例

在应用层中创建EmployeeAppService,在这里我们实现对业务用户的增删改查操作。

EmployeeAppService继承自CrudAppService,它是ABP框架提供的增删改查的基类,其基类定义了增删改查的接口,包括GetAsync,GetListAsync,CreateAsync,UpdateAsync,DeleteAsync等。

OrganizationUnit为业务用户的查询接口的按组织架构查询提供查询依据。OrganizationUnitAppService注入到EmployeeAppService中。

public class EmployeeAppService : CrudAppService<Employee, EmployeeDto, Guid, GetAllEmployeeInput, CreateEmployeeInput>, IEmployeeAppService
{
    private readonly IOrganizationUnitAppService organizationUnitAppService;

}

创建CreateWithUserAsync方法,用于创建业务用户。

public async Task<EmployeeDto> CreateWithUserAsync(CreateEmployeeWithUserInput input)
{

    var createdUser = await identityUserAppService.CreateAsync(input);
    await CurrentUnitOfWork.SaveChangesAsync();
    var currentEmployee = await userLookupService.FindByIdAsync(createdUser.Id);
    ObjectMapper.Map(input, currentEmployee);
    var updatedEmployee = await Repository.UpdateAsync(currentEmployee);
    var result = ObjectMapper.Map<Employee, EmployeeDto>(updatedEmployee);

    if (input.OrganizationUnitId.HasValue)
    {
        await organizationUnitAppService.AddToOrganizationUnitAsync(
            new UserToOrganizationUnitInput()
            { UserId = createdUser.Id, OrganizationUnitId = input.OrganizationUnitId.Value });
    }
    return result;
}

删除接口由CrudAppService提供默认实现,无需重写。

创建UpdateWithUserAsync方法,用于更新业务用户。

public async Task<EmployeeDto> UpdateWithUserAsync(CreateEmployeeInput input)
{

    var currentEmployee = await userLookupService.FindByIdAsync(input.Id);
    if (currentEmployee == null)
    {
        throw new UserFriendlyException("没有找到对应的用户");
    }
    ObjectMapper.Map(input, currentEmployee);
    var updatedEmployee = await Repository.UpdateAsync(currentEmployee);
    var result = ObjectMapper.Map<Employee, EmployeeDto>(updatedEmployee);

    return result;
}

查询单个实体接口由CrudAppService提供默认实现,无需重写。

查询集合:

以Employee为例,查询接口所需要的入参为:

OrganizationUnitId:按组织架构查询用户
IsWithoutOrganization:查询不属于任何组织架构的用户
EmployeeTitle:按职称查询用户

创建GetAllEmployeeInput,代码如下

public class GetAllEmployeeInput : PagedAndSortedResultRequestDto
{
    public string EmployeeTitle { get; set; }

    public Guid? OrganizationUnitId { get; set; }
    public bool IsWithoutOrganization { get; set; }

}

重写CreateFilteredQueryAsync


protected override async Task<IQueryable<Employee>> CreateFilteredQueryAsync(GetAllEmployeeInput input)
{
    var query = await ReadOnlyRepository.GetQueryableAsync().ConfigureAwait(continueOnCapturedContext: false);

    if (input.OrganizationUnitId.HasValue && !input.IsWithoutOrganization)
    {
        var organizationUnitUsers = await organizationUnitAppService.GetOrganizationUnitUsersAsync(new GetOrganizationUnitUsersInput()
        {
            Id = input.OrganizationUnitId.Value
        });
        if (organizationUnitUsers.Count() > 0)
        {
            var ids = organizationUnitUsers.Select(c => c.Id);
            query = query.Where(t => ids.Contains(t.Id));
        }
        else
        {
            query = query.Where(c => false);
        }
    }
    else if (input.IsWithoutOrganization)
    {
        var organizationUnitUsers = await organizationUnitAppService.GetUsersWithoutOrganizationAsync(new GetUserWithoutOrganizationInput());
        if (organizationUnitUsers.Count() > 0)
        {
            var ids = organizationUnitUsers.Select(c => c.Id);
            query = query.Where(t => ids.Contains(t.Id));
        }
        else
        {
            query = query.Where(c => false);
        }
    }
    query = query.WhereIf(!string.IsNullOrEmpty(input.EmployeeTitle), c => c.EmployeeTitle == input.EmployeeTitle);
    return query;
}

至此,我们已完成了对业务用户的增删改查功能实现。

创建控制器

在HttpApi项目中创建EmployeeController,代码如下:

[Area(HealthRemoteServiceConsts.ModuleName)]
[RemoteService(Name = HealthRemoteServiceConsts.RemoteServiceName)]
[Route("api/Health/employee")]
public class EmployeeController : AbpControllerBase, IEmployeeAppService
{
    private readonly IEmployeeAppService _employeeAppService;

    public EmployeeController(IEmployeeAppService employeeAppService)
    {
        _employeeAppService = employeeAppService;
    }

    [HttpPost]
    [Route("CreateWithUser")]

    public Task<EmployeeDto> CreateWithUserAsync(CreateEmployeeWithUserInput input)
    {
        return _employeeAppService.CreateWithUserAsync(input);
    }

    [HttpDelete]
    [Route("Delete")]
    public Task DeleteAsync(Guid id)
    {
        return _employeeAppService.DeleteAsync(id);
    }

    [HttpPut]
    [Route("UpdateWithUser")]

    public Task<EmployeeDto> UpdateWithUserAsync(CreateEmployeeInput input)
    {
        return _employeeAppService.UpdateWithUserAsync(input);
    }

    [HttpGet]
    [Route("Get")]
    public Task<EmployeeDto> GetAsync(Guid id)
    {
        return _employeeAppService.GetAsync(id);
    }

    [HttpGet]
    [Route("GetAll")]
    public Task<PagedResultDto<EmployeeDto>> GetAllAsync(GetAllEmployeeInput input)
    {
        return _employeeAppService.GetAllAsync(input);
    }
}

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转载自blog.csdn.net/udisi658996666/article/details/132651060
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