/// <summary>
/// Apply filter logic to the received <see cref="IQueryable{T}"/>.
/// Tries to resolve <see cref="IFilterExpressionProviderDictionary{TEntity}"/>
/// via <see cref="IServiceProvider"/>.
/// <para>
/// Matches the query parameters with the keys of the given filter dictionary.
/// Implement <see cref="IFilterByClientRequestInterpreter"/> for custom behavior.
/// </para>
/// <para>Requires <see cref="HttpContextProviderAttribute"/> to be set.</para>
/// </summary>
/// <typeparam name="TSource">The type of the value.</typeparam>
/// <param name="observable">The parent observable.</param>
/// <returns>An instance of <see cref="IProviderObservable{TSource}"/>.</returns>
public static IProviderObservable <IQueryable <TSource> > ApplyFilterByClientRequest <TSource>(
this IProviderObservable <IQueryable <TSource> > observable)
{
var filterDictionary = observable.ServiceProvider
.GetService <IFilterExpressionProviderDictionary <TSource> >();
return(observable.ApplyFilterByClientRequest(filterDictionary));
}
/// <summary>
/// Apply filter logic to the received <see cref="IQueryable{T}"/>.
/// <para>
/// Matches the query parameters with the keys of the given filter dictionary.
/// Implement <see cref="IFilterByClientRequestInterpreter"/> for custom behavior.
/// </para>
/// <para>Requires <see cref="HttpContextProviderAttribute"/> to be set.</para>
/// </summary>
/// <typeparam name="TSource">The type of the value.</typeparam>
/// <param name="observable">The parent observable.</param>
/// <param name="factory">
/// A factory function to create a dictionary of supported filter expressions.
/// </param>
/// <returns>An instance of <see cref="IProviderObservable{TSource}"/>.</returns>
public static IProviderObservable <IQueryable <TSource> > ApplyFilterByClientRequest <TSource>(
this IProviderObservable <IQueryable <TSource> > observable,
Func <FilterExpressionProviderDictionary <TSource>, IFilterExpressionProviderDictionary <TSource> > factory)
{
var filterProvider = new FilterExpressionProviderDictionary <TSource>(
observable.ServiceProvider);
var filterDictionary = factory(filterProvider);
return(observable.ApplyFilterByClientRequest(filterDictionary));
}
