protected override EntityChange GetEntityChange(EntityEntry entityEntry)
{
var entity = entityEntry.Entity;
EntityChangeType changeType;
switch (entityEntry.State)
{
case EntityState.Added:
changeType = EntityChangeType.Created;
break;
case EntityState.Deleted:
changeType = EntityChangeType.Deleted;
break;
case EntityState.Modified:
changeType = entityEntry.IsDeleted() ? EntityChangeType.Deleted : EntityChangeType.Updated;
break;
case EntityState.Detached:
case EntityState.Unchanged:
default:
return(null);
}
var entityId = entityEntry.GetPrimaryKeyValue();
if (entityId == null && changeType != EntityChangeType.Created)
{
return(null);
}
var entityType = entity.GetType();
var entityChange = new EntityChange
{
ChangeType = changeType,
EntityEntry = entityEntry,
EntityId = entityId,
EntityTypeFullName = entityType.FullName,
PropertyChanges = GetPropertyChanges(entityEntry).ToArray()
};
return(entityChange);
}