/// <summary>
/// 删除实体外键信息信息
/// </summary>
/// <param name="ids">要删除的实体外键信息编号</param>
/// <returns>业务操作结果</returns>
public async Task <OperationResult> DeleteCodeForeigns(params Guid[] ids)
{
List <string> names = new List <string>();
UnitOfWork.EnableTransaction();
foreach (var id in ids)
{
var entity = ForeignRepository.Query(m => m.Id == id).Select(m => new { D = m, EntityName = m.Entity.Name }).FirstOrDefault();
if (entity == null)
{
continue;
}
int count = await ForeignRepository.DeleteAsync(entity.D);
if (count > 0)
{
names.Add($"{entity.EntityName}-{entity.D.SelfNavigation}");
}
}
await UnitOfWork.CommitAsync();
return(names.Count > 0
? new OperationResult(OperationResultType.Success, $"实体外键“{names.ExpandAndToString()}”删除成功")
: OperationResult.NoChanged);
}
/// <summary>
/// 更新实体外键信息信息
/// </summary>
/// <param name="dtos">包含更新信息的实体外键信息</param>
/// <returns>业务操作结果</returns>
public async Task <OperationResult> UpdateCodeForeigns(params CodeForeignInputDto[] dtos)
{
List <string> names = new List <string>();
UnitOfWork.EnableTransaction();
foreach (var dto in dtos)
{
dto.Validate();
CodeEntity entity = await EntityRepository.GetAsync(dto.EntityId);
if (entity == null)
{
return(new OperationResult(OperationResultType.Error, $"编号为“{dto.EntityId}”的实体信息不存在"));
}
if (await CheckCodeForeignExists(m => m.SelfNavigation == dto.SelfNavigation && m.EntityId == dto.EntityId, dto.Id))
{
return(new OperationResult(OperationResultType.Error, $"实体“{entity.Name}”中名称为“{dto.SelfNavigation}”的外键信息已存在"));
}
int count;
if (dto.Id == default)
{
CodeForeign foreign = dto.MapTo <CodeForeign>();
count = await ForeignRepository.InsertAsync(foreign);
}
else
{
CodeForeign foreign = await ForeignRepository.GetAsync(dto.Id);
foreign = dto.MapTo(foreign);
count = await ForeignRepository.UpdateAsync(foreign);
}
if (count > 0)
{
names.Add($"{entity.Name}-{dto.SelfNavigation}");
}
}
await UnitOfWork.CommitAsync();
return(names.Count > 0
? new OperationResult(OperationResultType.Success, $"导航属性“{names.ExpandAndToString()}”更新成功")
: OperationResult.NoChanged);
}
/// <summary>
/// 检查实体外键信息信息是否存在
/// </summary>
/// <param name="predicate">检查谓语表达式</param>
/// <param name="id">更新的实体外键信息编号</param>
/// <returns>实体外键信息是否存在</returns>
public Task <bool> CheckCodeForeignExists(Expression <Func <CodeForeign, bool> > predicate, Guid id = default)
{
return(ForeignRepository.CheckExistsAsync(predicate, id));
}
