private void AddToChangeLog(IMethodInvocation input, string propertyName, IBaseEntity entity)
{
if (_changeLog.ContainsKey(propertyName))
{
var item = _changeLog[propertyName];
item.NewValue = input.Arguments[0];
item.TimeStamp = DateTime.Now;
}
else
{
UnitOfWorkItem item = new UnitOfWorkItem
{
OldVaue = input.Target.GetType().GetProperty(propertyName).GetValue(input.Target),
NewValue = input.Arguments[0],
TimeStamp = DateTime.Now,
PropertyName = propertyName,
ObjectId = entity.Id,
DomainObject = input.MethodBase.DeclaringType?.Name,
ChangedBy = Common.Constants.Constants.UserId
};
_changeLog.Add(propertyName, item);
}
}
/// <summary>
/// Implement this method to execute your behavior processing.
/// </summary>
/// <param name="input">Inputs to the current call to the target.</param>
/// <param name="getNext">Delegate to execute to get the next delegate in the behavior chain.</param>
/// <returns>
/// Return value from the target.
/// </returns>
/// <exception cref="System.NotImplementedException"></exception>
public IMethodReturn Invoke(IMethodInvocation input, GetNextInterceptionBehaviorDelegate getNext)
{
if (input.MethodBase.Name == "get_ChangeLog" && input.MethodBase.DeclaringType == typeof(IUnitOfWork))
{
return(input.CreateMethodReturn(ChangeLog.Values.ToArray()));
}
if (input.MethodBase.Name == "AddChange" && input.MethodBase.DeclaringType == typeof(IUnitOfWork))
{
UnitOfWorkItem unitOfWorkItem = input.Arguments[0] as UnitOfWorkItem;
if (!_changeLog.ContainsKey(unitOfWorkItem.PropertyName))
{
_changeLog.Add(unitOfWorkItem.PropertyName, unitOfWorkItem);
}
return(input.CreateMethodReturn(null));
}
IBaseModel model = input.Target as IBaseModel;
if (IsRelevantProperty(input) && (model.State == Constants.Constants.EntityState.Unchanged || model.State == Constants.Constants.EntityState.Modified))
{
if (model.State == Constants.Constants.EntityState.Unchanged)
{
_changeLog.Clear();
}
string propertyName = input.MethodBase.Name.Substring(4);
if (_changeLog.ContainsKey(propertyName))
{
var item = _changeLog[propertyName];
item.NewValue = input.Arguments[0] == null ? null : input.Arguments[0].ToString();
item.TimeStamp = DateTime.Now;
}
else
{
object oldValue = input.Target.GetType().GetProperty(propertyName).GetValue(input.Target);
if (oldValue == null && input.Arguments[0] == null)
{
return(getNext()(input, getNext));
}
if (oldValue != null && oldValue.Equals(input.Arguments[0]))
{
return(getNext()(input, getNext));
}
UnitOfWorkItem item = new UnitOfWorkItem
{
OldVaue = oldValue == null ? null : oldValue.ToString(),
NewValue = input.Arguments[0] == null ? null : input.Arguments[0].ToString(),
TimeStamp = DateTime.Now,
PropertyName = propertyName,
ObjectId = model.Id,
DomainObject = input.MethodBase.DeclaringType?.Name,
ChangedBy = Constants.Constants.UserId
};
_changeLog.Add(propertyName, item);
}
}
return(getNext()(input, getNext));
}
