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QuestDB is high performance SQL time series database

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 *  Copyright (c) 2014-2019 Appsicle
 *  Copyright (c) 2019-2020 QuestDB
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 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
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 *  http://www.apache.org/licenses/LICENSE-2.0
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package io.questdb.std.time;

import io.questdb.std.CharSequenceHashSet;
import io.questdb.std.CharSequenceObjHashMap;

import java.text.DateFormatSymbols;
import java.util.Locale;

public class DateLocaleFactory {
    public static final DateLocaleFactory INSTANCE = new DateLocaleFactory(TimeZoneRuleFactory.INSTANCE);

    private final CharSequenceObjHashMap dateLocales = new CharSequenceObjHashMap<>();

    public DateLocaleFactory(TimeZoneRuleFactory timeZoneRuleFactory) {
        CharSequenceHashSet cache = new CharSequenceHashSet();
        for (Locale l : Locale.getAvailableLocales()) {
            String tag = l.toLanguageTag();
            if ("und".equals(tag)) {
                tag = "";
            }
            dateLocales.put(tag, new DateLocale(new DateFormatSymbols(l), timeZoneRuleFactory, cache));
            cache.clear();
        }
    }

    public DateLocale getLocale(CharSequence id) {
        return dateLocales.get(id);
    }
}