src/java.base/share/classes/sun/util/locale/provider/LocaleDataMetaInfo.java

/*
 * Copyright (c) 2014, 2018, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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package sun.util.locale.provider;

import java.util.Map;

/**
 * LocaleData meta info SPI
 *
 * @author Naoto Sato
 */
public interface LocaleDataMetaInfo {

    /**
     * Returns the type of LocaleProviderAdapter for which this LocaleData
     * provides the data.
     * @return type The type of the adapter.
     */
    public LocaleProviderAdapter.Type getType();

    /**
     * Returns the string concatenation of the supported language tags in
     * this LocaleData instance
     * @param category category of the locale data.
     * @return concatenated language tags, separated by a space.
     */
    public String availableLanguageTags(String category);

    /**
     * Returns a map for time zone ids to their canonical ids.
     * The map key is either an LDML's short id, or a valid
     * TZDB zone id.
     * @return map of ids to their canonical ids.
     */
    default public Map<String, String>  tzCanonicalIDs() {
        return null;
    }

    /**
     * Returns a map for  language aliases which specifies mapping from source language
     * to from which it should be replaced.
     * @return map of source language to replacement language, separated by a space.
     */
   default public Map<String, String> getLanguageAliasMap(){
       return null;
   }
}