public static async Task <EntityEntry> RefreshAsync(this EntityEntry tracking, RefreshConflict refreshMode)
{
switch (refreshMode)
{
case RefreshConflict.StoreWins:
{
await tracking.ReloadAsync();
break;
}
case RefreshConflict.ClientWins:
{
PropertyValues databaseValues = await tracking.GetDatabaseValuesAsync();
if (databaseValues == null)
{
tracking.State = EntityState.Detached;
}
else
{
tracking.OriginalValues.SetValues(databaseValues);
}
break;
}
case RefreshConflict.MergeClientAndStore:
{
PropertyValues databaseValues = await tracking.GetDatabaseValuesAsync();
if (databaseValues == null)
{
tracking.State = EntityState.Detached;
}
else
{
PropertyValues originalValues = tracking.OriginalValues.Clone();
#if !EF
originalValues.SetValues(tracking.OriginalValues);
#endif
tracking.OriginalValues.SetValues(databaseValues);
#if EF
databaseValues.PropertyNames
.Where(property => !object.Equals(originalValues[property], databaseValues[property]))
.ForEach(property => tracking.Property(property).IsModified = false);
#else
databaseValues.Properties
.Where(property => !object.Equals(originalValues[property.Name], databaseValues[property.Name]))
.ForEach(property => tracking.Property(property.Name).IsModified = false);
#endif
}
break;
}
}
return(tracking);
}
/// <summary>
/// auto update create at, by, update at, mod by
/// </summary>
/// <param name="user">user.name</param>
/// <returns></returns>
//public int SaveChanges(/*string user*/)
//{
// //RenewMacroColumn(user);
// return SaveChanges();
//}
/// <summary>
/// base save changes
/// </summary>
/// <returns></returns>
//public override int SaveChanges()
//{
// try
// {
// return base.SaveChanges();
// }
// catch (DbEntityValidationException ex)
// {
// Exception raise = ex;
// foreach (var validationErrors in ex.EntityValidationErrors)
// {
// foreach (var validationError in validationErrors.ValidationErrors)
// {
// string message = string.Format("{0}:{1}",
// validationErrors.Entry.Entity.ToString(),
// validationError.ErrorMessage);
// // raise a new exception nesting
// // the current instance as InnerException
// raise = new InvalidOperationException(message, raise);
// }
// }
// return -1;
// }
//}
//protected void RenewMacroColumn(string user)
//{
// foreach (var dbEntry in this.ChangeTracker.Entries())
// {
// switch (dbEntry.State)
// {
// case EntityState.Added:
// CreateWithValues(dbEntry, "GID", System.Guid.NewGuid());
// CreateWithValues(dbEntry, "CreatedAt", System.DateTime.Now);
// CreateWithValues(dbEntry, "ModBy", user);
// CreateWithValues(dbEntry, "UpdatedAt", System.DateTime.Now);
// break;
// case EntityState.Modified:
// CreateWithValues(dbEntry, "ModBy", user);
// CreateWithValues(dbEntry, "UpdatedAt", System.DateTime.Now);
// break;
// }
// }
//}
private void CreateWithValues(System.Data.Entity.Infrastructure.DbEntityEntry dbEntry, string propertyName, object value)
{
if (dbEntry.CurrentValues.PropertyNames.Any(x => x == propertyName))
{
dbEntry.Property(propertyName).CurrentValue = value;
}
}
public void EntityEntity_can_be_obtained_from_non_generic_DbPropertyEntry_back_reference()
{
var entityEntry = new DbEntityEntry <FakeWithProps>(FakeWithProps.CreateMockInternalEntityEntry().Object);
var backEntry = entityEntry.Property("ValueTypeProp").EntityEntry;
Assert.Same(entityEntry.Entity, backEntry.Entity);
}
public void Parent_PropertyEntity_returns_null_for_non_nested_non_generic_DbPropertyEntry_back_reference()
{
var entityEntry = new DbEntityEntry <FakeWithProps>(FakeWithProps.CreateMockInternalEntityEntry().Object);
var backEntry = entityEntry.Property("ValueTypeProp").ParentProperty;
Assert.Null(backEntry);
}
public void Edit(TEntity model, string[] propertys)
{
if (model == null)
{
throw new Exception(" 实体不能为空");
}
if (propertys.Any() == false)
{
throw new Exception("要修改的属性至少有一个");
}
// 2.0 将 model 追加到EF容器
System.Data.Entity.Infrastructure.DbEntityEntry entry = db.Entry(model);
entry.State = System.Data.EntityState.Unchanged;
foreach (var item in propertys)
{
entry.Property(item).IsModified = true;
}
//3.0 关闭EF对于实体的合法性验证参数
db.Configuration.ValidateOnSaveEnabled = false;
}
/// <summary>
///
/// </summary>
/// <param name="model">没有被ef容器管理的</param>
/// <param name="propertyNames"></param>
public void Edit(TEntity model, string[] propertyNames)
{
//1.0 合法性验证
if (model == null)
{
throw new Exception("Edit中的参数model不能为null");
}
if (propertyNames == null || propertyNames.Any() == false)
{
throw new Exception("Edit中的参数propertyNames至少要有一个属性");
}
//2.0 将model追加到EF容器中
System.Data.Entity.Infrastructure.DbEntityEntry entry = db.Entry(model);
entry.State = System.Data.EntityState.Unchanged;
foreach (var item in propertyNames)
{
entry.Property(item).IsModified = true;
}
//3.0 关闭EF的实体属性合法性验证
db.Configuration.ValidateOnSaveEnabled = false;
}
