public CollectionJsonMediaTypeFormatter(ICollectionSettings <T> collectionSettings, MappingEngine mappingEngine)
{
_collectionSettings = collectionSettings;
_mappingEngine = mappingEngine;
SupportedMediaTypes.Clear();
SupportedMediaTypes.Add(new MediaTypeHeaderValue("application/vnd.collection+json"));
}
public static IEnumerable <T> Sort <T>(this IEnumerable <T> contents, ICollectionSettings settings) where T : IContent
{
if (contents == null)
{
throw new ArgumentNullException(nameof(contents));
}
// ReSharper disable InvertIf
if (settings?.Comparers != null && settings.Comparers.Any())
{
var comparer = new CompositeComparer <IContent>(settings.Comparers);
contents = contents.OrderBy(content => content, comparer);
}
// ReSharper restore InvertIf
return(contents);
}
public static IEnumerable <T> Filter <T>(this IEnumerable <T> contents, ICollectionSettings settings) where T : IContent
{
if (contents == null)
{
throw new ArgumentNullException(nameof(contents));
}
// ReSharper disable InvertIf
if (settings?.Filters != null && settings.Filters.Any())
{
var filter = new CompositeFilter(settings.Filters);
contents = contents.Where(content => !filter.ShouldFilter(content));
}
// ReSharper restore InvertIf
return(contents);
}
public static IEnumerable <T> DuplicateHandled <T>(this IEnumerable <T> contents, ICollectionSettings settings) where T : IContent
{
if (contents == null)
{
throw new ArgumentNullException(nameof(contents));
}
// Guess this is enough because content comes from the cache and there is reference-equality.
return(!(settings?.IgnoreDuplicates ?? false) ? contents.Distinct() : contents);
// If it is not enough then we can use this:
//return !(settings?.IgnoreDuplicates ?? false) ? contents.GroupBy(content => content.ContentLink).Select(grouping => grouping.First()) : contents;
}
protected internal virtual IEnumerable <ContentReference> DuplicateHandledRoots(IEnumerable <ContentReference> roots, ICollectionSettings settings)
{
return(roots == null?Enumerable.Empty <ContentReference>() : !(settings?.IgnoreDuplicates ?? false) ? roots.Distinct(ContentReferenceComparer.Default) : roots);
}
