Example usage for java.util Locale lookup

Introduction

In this page you can find the example usage for java.util Locale lookup.

Prototype

public static Locale lookup(List<LanguageRange> priorityList, Collection<Locale> locales) 

Source Link

Document

Returns a Locale instance for the best-matching language tag using the lookup mechanism defined in RFC 4647.

Usage

From source file:org.kitodo.dataeditor.ruleset.Labeled.java

/**
 * Lists the entries alphabetically by the translated label, taking into
 * account the language preferred by the user for alphabetical sorting. In
 * the auxiliary map, the keys are sorted by the sequence translated label +
 * separator + key, to account for the case where multiple keys are
 * (inadvertently) translated equally.//  w w  w.ja v a2s. c  o  m
 *
 * @param ruleset
 *            The ruleset. From the ruleset, we learn which language is a
 *            label that does not have a language attribute, that is what is
 *            the default language of the rule set.
 * @param elements
 *            The items to sort. The function is so generic that you can
 *            sort divisions, keys, and options with it.
 * @param keyGetter
 *            A function to extract from the element the value used in the
 *            result map as key.
 * @param labelGetter
 *            A function that allows you to extract the list of labels from
 *            the element and then select the best translated one.
 * @param priorityList
 *            The list of languages spoken by the user human
 * @return a map in the order of the best-fitting translated label
 */
public static <T> LinkedHashMap<String, String> listByTranslatedLabel(Ruleset ruleset, Collection<T> elements,
        Function<T, String> keyGetter, Function<T, Collection<Label>> labelGetter,
        List<LanguageRange> priorityList) {

    Locale sortLocale = Locale.lookup(priorityList, Arrays.asList(Collator.getAvailableLocales()));
    TreeMap<String, Pair<String, String>> byLabelSorter = sortLocale != null
            ? new TreeMap<>(Collator.getInstance(sortLocale))
            : new TreeMap<>();
    for (T element : elements) {
        String key = keyGetter.apply(element);
        Labeled labeled = new Labeled(ruleset, key, labelGetter.apply(element));
        String label = labeled.getLabel(priorityList);
        byLabelSorter.put(label + '\037' + key, Pair.of(key, label));
    }
    LinkedHashMap<String, String> result = new LinkedHashMap<>((int) Math.ceil(elements.size() / 0.75));
    for (Pair<String, String> entry : byLabelSorter.values()) {
        result.put(entry.getKey(), entry.getValue());
    }
    return result;
}

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From source file:org.kitodo.dataeditor.ruleset.Labeled.java

/**
 * Returns the etiquette in the favorite language.
 *
 * @param priorityList/*from   w ww . ja v  a2s  .  c o  m*/
 *            wish list for favorite language
 * @return the etiquette in the favorite language
 */
String getLabel(List<LanguageRange> priorityList) {
    Map<Locale, String> labelMap = new HashMap<>();
    for (Label label : labels) {
        Optional<Locale> langAttribute = label.getLanguage();
        if (langAttribute.isPresent()) {
            labelMap.put(langAttribute.get(), label.getValue());
        } else {
            labelMap.put(new Locale(ruleset.getDefaultLang()), label.getValue());
            labelMap.put(UNDEFINED_LOCALE, label.getValue());
        }
    }
    Locale bestMatching = Locale.lookup(priorityList, labelMap.keySet());
    if (bestMatching == null) {
        bestMatching = Locale.lookup(UNDEFINED_LANGUAGE_RANGE, labelMap.keySet());
    }
    return Optional.ofNullable(labelMap.get(bestMatching)).orElse(id);
}

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