/// <summary>
/// 删除实体
/// </summary>
/// <param name="ent"></param>
/// <param name="isSave">是否保存到数据库，如果为false，则没有保存数据库，必须执行SaveChanges()
/// 来实现事务</param>
/// <returns></returns>
public int Delete(TEntity ent, bool isSave = true)
{
ExceptionExtension.IsNull(ent, "ent");
_entites.Remove(ent);
return(isSave?_db.SaveChanges():0);
}
/// <summary>
/// 批量删除（条件）
/// </summary>
/// <param name="where"></param>
/// <param name="isSave">是否保存到数据库，如果为false，则没有保存数据库，必须执行SaveChanges()
/// 来实现事务</param>
/// <returns></returns>
public int Delete(System.Linq.Expressions.Expression <Func <TEntity, bool> > where, bool isSave = true)
{
ExceptionExtension.IsNull(where, "where");
var ents = _entites.Where(where).ToList();
return(isSave?_db.SaveChanges():0);
}
/// <summary>
/// 批量更新条件相同的实体
/// </summary>
/// <param name="where">需要更新的实体条件</param>
/// <param name="isSave">是否保存到数据库，如果为false，则没有保存数据库，必须执行SaveChanges()
/// 来实现事务</param>
/// <returns></returns>
public int Update(System.Linq.Expressions.Expression <Func <TEntity, bool> > where,
bool isSave = true)
{
ExceptionExtension.IsNull(where, "where");
var ents = _entites.Where(where).ToList();
return(Update(ents, isSave));
}
/// <summary>
/// 批量删除
/// </summary>
/// <param name="ents"></param>
/// <param name="isSave">是否保存到数据库，如果为false，则没有保存数据库，必须执行SaveChanges()
/// 来实现事务</param>
/// <returns></returns>
public int Delete(IEnumerable <TEntity> ents, bool isSave = true)
{
ExceptionExtension.IsNull(ents, "ents");
foreach (var ent in ents)
{
_entites.Remove(ent);
}
return(isSave?_db.SaveChanges():0);
}
/// <summary>
/// 更新实体
/// </summary>
/// <param name="ent"></param>
/// <param name="isSave">是否保存到数据库，如果为false，则没有保存数据库，必须执行SaveChanges()
/// 来实现事务</param>
/// <returns></returns>
public int Update(TEntity ent, bool isSave = true)
{
ExceptionExtension.IsNull(ent, "ent");
var state = _db.Entry <TEntity>(ent).State;
if (state == EntityState.Detached)
{
_entites.Attach(ent);
}
_db.Entry <TEntity>(ent).State = EntityState.Modified;
return(isSave == true?_db.SaveChanges() : 0);
}
/// <summary>
/// 批量更新多个实体
/// </summary>
/// <param name="ents"></param>
/// <param name="isSave">是否保存到数据库，如果为false，则没有保存数据库，必须执行SaveChanges()
/// 来实现事务</param>
/// <returns></returns>
public int Update(IEnumerable <TEntity> ents, bool isSave = true)
{
ExceptionExtension.IsNull(ents, "ents");
foreach (var ent in ents)
{
var state = _db.Entry <TEntity>(ent).State;
if (state == EntityState.Detached)
{
_entites.Attach(ent);
}
_db.Entry <TEntity>(ent).State = EntityState.Modified;
}
return(isSave == true?_db.SaveChanges() : 0);
}
