/// <summary>
/// Updates change time, entity id and foreign keys after SaveChanges is called.
/// </summary>
private void UpdateChangeSet(EntityChangeSet changeSet)
{
foreach (var entityChange in changeSet.EntityChanges)
{
/* Update change time */
entityChange.ChangeTime = GetChangeTime(entityChange);
/* Update entity id */
var entityEntry = entityChange.EntityEntry.As <EntityEntry>();
entityChange.EntityId = GetEntityId(entityEntry.Entity);
/* Update foreign keys */
var foreignKeys = entityEntry.Metadata.GetForeignKeys();
foreach (var foreignKey in foreignKeys)
{
foreach (var property in foreignKey.Properties)
{
var propertyEntry = entityEntry.Property(property.Name);
var propertyChange = entityChange.PropertyChanges.FirstOrDefault(pc => pc.PropertyName == property.Name);
if (propertyChange == null)
{
if (!(propertyEntry.OriginalValue?.Equals(propertyEntry.CurrentValue) ?? propertyEntry.CurrentValue == null))
{
// Add foreign key
entityChange.PropertyChanges.Add(new EntityPropertyChange
{
NewValue = propertyEntry.CurrentValue.ToJsonString(),
OriginalValue = propertyEntry.OriginalValue.ToJsonString(),
PropertyName = property.Name,
PropertyTypeFullName = property.ClrType.FullName
});
}
continue;
}
if (propertyChange.OriginalValue == propertyChange.NewValue)
{
var newValue = propertyEntry.CurrentValue.ToJsonString();
if (newValue == propertyChange.NewValue)
{
// No change
entityChange.PropertyChanges.Remove(propertyChange);
}
else
{
// Update foreign key
propertyChange.NewValue = newValue.TruncateWithPostfix(EntityPropertyChange.MaxValueLength);
}
}
}
}
}
}
public virtual async Task SaveAsync(EntityChangeSet changeSet)
{
if (!IsEntityHistoryEnabled)
{
return;
}
if (changeSet.EntityChanges.Count == 0)
{
return;
}
UpdateChangeSet(changeSet);
using (var uow = _unitOfWorkManager.Begin(TransactionScopeOption.Suppress))
{
await EntityHistoryStore.SaveAsync(changeSet);
await uow.CompleteAsync();
}
}
public virtual EntityChangeSet CreateEntityChangeSet(ICollection <EntityEntry> entityEntries)
{
var changeSet = new EntityChangeSet
{
Reason = EntityChangeSetReasonProvider.Reason.TruncateWithPostfix(EntityChangeSet.MaxReasonLength),
// Fill "who did this change"
BrowserInfo = ClientInfoProvider.BrowserInfo.TruncateWithPostfix(EntityChangeSet.MaxBrowserInfoLength),
ClientIpAddress = ClientInfoProvider.ClientIpAddress.TruncateWithPostfix(EntityChangeSet.MaxClientIpAddressLength),
ClientName = ClientInfoProvider.ComputerName.TruncateWithPostfix(EntityChangeSet.MaxClientNameLength),
ImpersonatorTenantId = CodeZeroSession.ImpersonatorTenantId,
ImpersonatorUserId = CodeZeroSession.ImpersonatorUserId,
TenantId = CodeZeroSession.TenantId,
UserId = CodeZeroSession.UserId
};
if (!IsEntityHistoryEnabled)
{
return(changeSet);
}
foreach (var entry in entityEntries)
{
if (!ShouldSaveEntityHistory(entry))
{
continue;
}
var entityChange = CreateEntityChange(entry);
if (entityChange == null)
{
continue;
}
changeSet.EntityChanges.Add(entityChange);
}
return(changeSet);
}
public static void Save(this IEntityHistoryHelper entityHistoryHelper, EntityChangeSet changeSet)
{
AsyncHelper.RunSync(() => entityHistoryHelper.SaveAsync(changeSet));
}
public virtual Task SaveAsync(EntityChangeSet changeSet)
{
return(_changeSetRepository.InsertAsync(changeSet));
}
public Task SaveAsync(EntityChangeSet entityChangeSet)
{
return(Task.CompletedTask);
}