/* * Copyright (c) 2012, 2013, 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. */ /* * This file is available under and governed by the GNU General Public * License version 2 only, as published by the Free Software Foundation. * However, the following notice accompanied the original version of this * file: * * Copyright (c) 2009-2012, Stephen Colebourne & Michael Nascimento Santos * * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * * Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * * Neither the name of JSR-310 nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ package java.time.format; import java.text.SimpleDateFormat; import java.time.chrono.Chronology; import java.util.Locale; import java.util.concurrent.ConcurrentHashMap; import java.util.concurrent.ConcurrentMap; import sun.util.locale.provider.LocaleProviderAdapter; import sun.util.locale.provider.LocaleResources; /** * A provider to obtain date-time formatters for a style. *
* *
* The formatter will be the most appropriate to use for the date and time style in the locale. * For example, some locales will use the month name while others will use the number. * * @param dateStyle the date formatter style to obtain, null to obtain a time formatter * @param timeStyle the time formatter style to obtain, null to obtain a date formatter * @param chrono the chronology to use, not null * @param locale the locale to use, not null * @return the date-time formatter, not null * @throws IllegalArgumentException if both format styles are null or if the locale is not recognized */ public DateTimeFormatter getFormatter( FormatStyle dateStyle, FormatStyle timeStyle, Chronology chrono, Locale locale) { if (dateStyle == null && timeStyle == null) { throw new IllegalArgumentException("Date and Time style must not both be null"); } String key = chrono.getId() + '|' + locale.toString() + '|' + dateStyle + timeStyle; Object cached = FORMATTER_CACHE.get(key); if (cached != null) { return (DateTimeFormatter) cached; } LocaleResources lr = LocaleProviderAdapter.getResourceBundleBased() .getLocaleResources(locale); String pattern = lr.getCldrDateTimePattern(convertStyle(timeStyle), convertStyle(dateStyle), chrono.getCalendarType()); DateTimeFormatter formatter = new DateTimeFormatterBuilder().appendPattern(pattern).toFormatter(locale); FORMATTER_CACHE.putIfAbsent(key, formatter); return formatter; } /** * Converts the enum style to the java.util.Calendar style. Standalone styles * are not supported. * * @param style the enum style * @return the int style, or -1 if style is null, indicating unrequired */ private int convertStyle(FormatStyle style) { if (style == null) { return -1; } return style.ordinal(); // indices happen to align } }