public static ILoadWithQueryable <TEntity, TProperty> ThenLoad <TEntity, TPreviousProperty, TProperty>(
this ILoadWithQueryable <TEntity, IEnumerable <TPreviousProperty> > source,
[InstantHandle] Expression <Func <TPreviousProperty, TProperty> > selector)
where TEntity : class
{
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
if (selector == null)
{
throw new ArgumentNullException(nameof(selector));
}
var result = source.Provider.CreateQuery <TEntity>(
Expression.Call(null,
MethodHelper.GetMethodInfo(ThenLoad, source, selector),
new[] { source.Expression, Expression.Quote(selector) }));
return(new LoadWithQueryable <TEntity, TProperty>(result));
}
[Pure] // Methods.LinqToDB.ThenLoadFromManyManyFilter
public static ILoadWithQueryable <TEntity, TProperty> ThenLoad <TEntity, TPreviousProperty, TProperty>(
this ILoadWithQueryable <TEntity, IEnumerable <TPreviousProperty> > source,
[InstantHandle] Expression <Func <TPreviousProperty, IEnumerable <TProperty> > > selector,
[InstantHandle] Expression <Func <IQueryable <TProperty>, IQueryable <TProperty> > > loadFunc)
where TEntity : class
{
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
if (selector == null)
{
throw new ArgumentNullException(nameof(selector));
}
var currentSource = ProcessSourceQueryable?.Invoke(source) ?? source;
var result = currentSource.Provider.CreateQuery <TEntity>(
Expression.Call(null,
MethodHelper.GetMethodInfo(ThenLoad, source, selector, loadFunc),
currentSource.Expression, Expression.Quote(selector), Expression.Quote(loadFunc)));
return(new LoadWithQueryable <TEntity, TProperty>(result));
}
