public static IQueryable <T> ApplyFetchingOptions <T>(this IQueryable <T> query, IRepositoryConventions conventions, IFetchQueryStrategy <T> fetchStrategy) where T : class
{
Guard.NotNull(query, nameof(query));
Guard.NotNull(conventions, nameof(conventions));
var fetchingPaths = fetchStrategy.DefaultIfFetchStrategyEmpty(conventions).PropertyPaths.ToList();
if (fetchingPaths.Any())
{
query = fetchingPaths.Aggregate(query, (current, path) => current.Include(path));
}
return(query);
}
/// <summary>
/// Apply a fetching options to the specified entity's query.
/// </summary>
/// <returns>The entity's query with the applied options.</returns>
public static IEnumerable <T> ApplyFetchingOptions <T>([NotNull] this IEnumerable <T> query, [CanBeNull] IFetchQueryStrategy <T> fetchStrategy, [NotNull] Func <Type, IEnumerable <object> > innerQueryCallback) where T : class
{
Guard.NotNull(query, nameof(query));
Guard.NotNull(innerQueryCallback, nameof(innerQueryCallback));
var fetchingPaths = fetchStrategy.DefaultIfFetchStrategyEmpty().PropertyPaths.ToList();
var fetchHelper = new FetchHelper(innerQueryCallback);
if (fetchingPaths.Any())
{
query = fetchingPaths.NormalizePropertyPaths().Aggregate(query, (current, path) => fetchHelper.Include(current, path));
}
return(query);
}
/// <summary>
/// Returns the fetch strategy, or a default valued if the sequence is empty.
/// </summary>
/// <typeparam name="T">The type of the entity.</typeparam>
/// <param name="source">The source.</param>
/// <returns>The fetching strategy.</returns>
public static IFetchQueryStrategy <T> DefaultIfFetchStrategyEmpty <T>([CanBeNull] this IFetchQueryStrategy <T> source)
{
return(source.DefaultIfFetchStrategyEmpty(RepositoryConventions.Default()));
}