valuesByKeyPrefix method

@override TTIterable<V> valuesByKeyPrefix(String prefix, { int maxPrefixEditDistance = 0, })

Iterates through TTMultiMap values for each key such that only keys prefixed by keyMapping(prefix) are included.

If keyMapping(prefix) is empty then returns empty iterable.

See keysByPrefix for more information on result ordering, near neighbour search etc.

Combines individual Key->Values relations into a single flat ordering.

[['Card', 'card'],['Cat', 'cat', 'CAT']] -> ['Card', 'card','Cat', 'cat', 'CAT'].

Throws ArgumentError if prefix is empty or null.

Implementation

@override
TTIterable<V> valuesByKeyPrefix(String prefix,
    {int maxPrefixEditDistance = 0}) {
  final key = _mapKey(prefix);
  final root = _root;
  return (identical(root, null) || key.isEmpty)
      ? TTIterable<V>.empty()
      : InOrderValuesIterable<V>(root, _version,
          prefixSearchResult:
              root.getClosestPrefixDescendant(key.runes.toList()),
          maxPrefixEditDistance: maxPrefixEditDistance);
}