/// <summary>
/// Saves.
/// </summary>
/// <param name="value">The entity to add or update.</param>
/// <param name="cancellationToken">The optional token to monitor for cancellation requests.</param>
/// <returns>The change method.</returns>
public virtual async Task <ChangingResultInfo> SaveAsync(T value, CancellationToken cancellationToken = default)
{
if (value == null)
{
return(new ChangingResultInfo(ChangeMethods.Unchanged));
}
var isNew = value.IsNew;
if (isNew)
{
OnAdd(value);
}
else
{
OnUpdate(value);
}
try
{
var result = await DbResourceEntityExtensions.SaveAsync(Set, SaveChangesAsync, value, cancellationToken);
Saved?.Invoke(this, new ChangeEventArgs <T>(isNew ? null : value, value, result));
if (ResourceEntityExtensions.IsSuccessful(result))
{
return(new ChangingResultInfo <T>(result, value, $"{result} {typeof(T).Name} entity."));
}
return(result);
}
catch (Exception ex)
{
var err = DbResourceEntityExtensions.TryCatch(ex);
if (err != null)
{
return(err);
}
throw;
}
}
/// <summary>
/// Creates or updates an entity.
/// </summary>
/// <typeparam name="T">The type of entity.</typeparam>
/// <param name="set">The entity set.</param>
/// <param name="save">The save action handler.</param>
/// <param name="entity">The entity.</param>
/// <param name="cancellationToken">The optional token to monitor for cancellation requests.</param>
/// <returns>An async task result.</returns>
public static Task <ChangeMethods> SaveAsync <T>(DbSet <T> set, Func <CancellationToken, Task <int> > save, T entity, CancellationToken cancellationToken = default) where T : BaseResourceEntity
{
InternalAssertion.IsNotNull(set, nameof(set));
return(ResourceEntityExtensions.SaveAsync(entity, set.Add, set.Update, save, cancellationToken));
}
