/* * Copyright (c) 2005, 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 * or visit www.oracle.com if you need additional information or have any * questions. */ #warn This file is preprocessed before being compiled package sun.util; import java.util.Arrays;import java.util.Collection;import java.util.Collections;import java.util.HashSet;import java.util.List;import java.util.Locale;import java.util.ResourceBundle;import java.util.ResourceBundle.Control; /** * This is a convenient class for loading some of internal resources faster * if they are built with Resources.gmk defined in J2SE workspace. Also, * they have to be in class file format. * * "LOCALE_LIST" will be replaced at built time by a list of locales we * defined in Defs.gmk. We want to exclude these locales from search to * gain better performance. For example, since we know if the resource * is built with Resources.gmk, they are not going to provide basename_en.class * & basename_en_US.class resources, in that case, continuing searching them * is expensive. By excluding them from the candidate locale list, these * resources won't be searched. * * @since 1.6. */public class CoreResourceBundleControl extends ResourceBundle.Control {    /* the candidate locale list to search */    private final Collection<Locale> excludedJDKLocales;    /* singlton instance of the resource bundle control. */    private static CoreResourceBundleControl resourceBundleControlInstance =        new CoreResourceBundleControl();     protected CoreResourceBundleControl() {        excludedJDKLocales = Arrays.asList(#LOCALE_LIST#);    }     /**     * This method is to provide a customized ResourceBundle.Control to speed     * up the search of resources in JDK.     *     * @return the instance of resource bundle control.     */    public static CoreResourceBundleControl getRBControlInstance() {        return resourceBundleControlInstance;    }     /**     * This method is to provide a customized ResourceBundle.Control to speed     * up the search of resources in JDK, with the bundle's package name check.     *     * @param bundleName bundle name to check     * @return the instance of resource bundle control if the bundle is JDK's,     *    otherwise returns null.     */    public static CoreResourceBundleControl getRBControlInstance(String bundleName) {        if (bundleName.startsWith("com.sun.") ||            bundleName.startsWith("java.") ||            bundleName.startsWith("javax.") ||            bundleName.startsWith("sun.")) {            return resourceBundleControlInstance;        } else {            return null;        }    }     /**     * @returns a list of candidate locales to search from.     * @exception NullPointerException if baseName or locale is null.     */    @Override    public List<Locale> getCandidateLocales(String baseName, Locale locale) {        List<Locale> candidates = super.getCandidateLocales(baseName, locale);        candidates.removeAll(excludedJDKLocales);        return candidates;    }     /**     * @ returns TTL_DONT_CACHE so that ResourceBundle instance won't be cached.     * User of this CoreResourceBundleControl should probably maintain a hard reference     * to the ResourceBundle object themselves.     */    @Override    public long getTimeToLive(String baseName, Locale locale) {        return ResourceBundle.Control.TTL_DONT_CACHE;    }}