/// <summary>
/// 保存or更新数据对象
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="dto">实体对象</param>
/// <param name="select">查询属性</param>
public int Set <T>(T dto, Expression <Func <T, object> > select = null) where T : class, new()
{
ExHelper.ThrowIfNull(dto, "操作对象不能为空.");
int rowCount = 0;
DtoMapping dtoDbMapping = DtoMappingHelper.GetDtoMapping <T>();
object pkValue = dtoDbMapping.PkMap.Pi.GetValue(dto);
if (ExHelper.IsNullOrEmpty(pkValue))
{
rowCount = Add(dto, select);
}
else
{
rowCount = Update(dto, select);
}
return(rowCount);
}
/// <summary>
/// 批量保存数据
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="list">实体对象</param>
/// <param name="select">查询属性</param>
/// <param name="useTransaction">使用事务操作 默认false</param>
/// <param name="progress">保存进度</param>
public int SetList <T>(List <T> list, Expression <Func <T, object> > select = null, bool useTransaction = false, IProgress <double> progress = null) where T : class, new()
{
if (list == null || list.Count <= 0)
{
return(0);
}
int rowCount = 0;
DtoMapping dtoDbMapping = DtoMappingHelper.GetDtoMapping <T>();
List <T> addList = new List <T>();
List <T> updateList = new List <T>();
#region 拆分新增或更新对象List
for (int i = 0; i < list.Count; i++)
{
object pkValue = dtoDbMapping.PkMap.Pi.GetValue(list[i]);
if (ExHelper.IsNullOrEmpty(pkValue))
{
addList.Add(list[i]);
}
else
{
updateList.Add(list[i]);
}
}
#endregion
if (useTransaction)
{
if (addList.Count > 0 && updateList.Count > 0)
{
throw new Exception("插入和更新操作同时存在时,不能启用事务.");
}
}
if (addList.Count > 0)
{
rowCount += AddList(addList, select, useTransaction, progress);
}
if (updateList.Count > 0)
{
rowCount += UpdateList(updateList, select, useTransaction, progress);
}
return(rowCount);
}