collectionsFromJSON static method

Map<String, List<PublicationCollection>> collectionsFromJSON(Map<String, dynamic> json, { LinkHrefNormalizer normalizeHref = linkHrefNormalizerIdentity, })

Parses a map of PublicationCollection indexed by their roles from its RWPM JSON representation.

If the collection can't be parsed, a warning will be logged with warnings. The links' href and their children's will be normalized recursively using the provided normalizeHref closure.

Implementation

static Map<String, List<PublicationCollection>> collectionsFromJSON(
    Map<String, dynamic> json,
    {LinkHrefNormalizer normalizeHref = linkHrefNormalizerIdentity}) {
  Map<String, List<PublicationCollection>> collections = {};
  for (String role in json.keys.toList()..sort((a, b) => a.compareTo(b))) {
    dynamic subJSON = json[role];

    // Parses a list of links or a single collection object.
    PublicationCollection? collection =
        PublicationCollection.fromJSON(subJSON, normalizeHref: normalizeHref);
    if (collection != null) {
      collections.putIfAbsent(role, () => []).add(collection);
      // Parses a list of collection objects.
    } else if (subJSON is List) {
      Iterable<PublicationCollection> subcollections = subJSON
          .map((it) => PublicationCollection.fromJSON(it,
              normalizeHref: normalizeHref))
          .whereNotNull();
      collections.putIfAbsent(role, () => []).addAll(subcollections);
    }
  }
  return collections;
}