ModelPathSuggestionProvider.java 文件源码

@Override
public List<ModelPath> transform(final ModelPath unavailable) {
    Iterable<Suggestion> suggestions = Iterables.transform(availablePaths, new Function<ModelPath, Suggestion>() {
        public Suggestion apply(ModelPath available) {
            int distance = StringUtils.getLevenshteinDistance(unavailable.toString(), available.toString());
            boolean suggest = distance <= Math.min(3, unavailable.toString().length() / 2);
            if (suggest) {
                return new Suggestion(distance, available);
            } else {
                // avoid excess creation of Suggestion objects
                return null;
            }
        }
    });

    suggestions = Iterables.filter(suggestions, REMOVE_NULLS);
    List<Suggestion> sortedSuggestions = CollectionUtils.sort(suggestions);
    return CollectionUtils.collect(sortedSuggestions, Suggestion.EXTRACT_PATH);
}