/// <summary>Begins the track.</summary>
/// <param name="provider">The provider.</param>
/// <param name="changeTracker">The change tracker.</param>
public void BeginTrack(Microsoft.EntityFrameworkCore.ChangeTracking.ChangeTracker changeTracker)
{
if (!_observers.Any())
{
return;
}
foreach (var objectChanged in changeTracker.SelectObjectsChanged <TEntity>(_properties))
{
_transientItens.Enqueue(objectChanged);
}
}
/// <summary>Selects the objects changed.</summary>
/// <typeparam name="T"></typeparam>
/// <param name="entries">The entries.</param>
/// <param name="properties">The properties.</param>
/// <returns></returns>
public static IReadOnlyCollection <ObjectChanged <T> > SelectObjectsChanged <T>(this ChangeTracker entries, ICollection <string> properties) where T : class
{
var itens = new List <ObjectChanged <T> >();
if (entries?.HasChanges() != true)
{
return(itens);
}
foreach (var entry in entries.Entries <T>().Where(e => !IgnoreStates.Contains(e.State)))
{
var propertiesChanged = entry.SelectPropertiesChanged(properties);
if (!propertiesChanged.Any())
{
continue;
}
var oc = new ObjectChanged <T>(((int)entry.State), entry.State.ToString(), entry.Entity, propertiesChanged);
itens.Add(oc);
}
return(itens);
}
