| /* |
| * 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. |
| */ |
| |
| /* |
| * Copyright (c) 2007-2012, 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; |
| |
| import java.io.DataInput; |
| import java.io.DataOutput; |
| import java.io.IOException; |
| import java.io.InvalidObjectException; |
| import java.io.ObjectInputStream; |
| import java.io.Serializable; |
| import java.time.zone.ZoneRules; |
| import java.time.zone.ZoneRulesException; |
| import java.time.zone.ZoneRulesProvider; |
| import java.util.Objects; |
| |
| /** |
| * A geographical region where the same time-zone rules apply. |
| * <p> |
| * Time-zone information is categorized as a set of rules defining when and |
| * how the offset from UTC/Greenwich changes. These rules are accessed using |
| * identifiers based on geographical regions, such as countries or states. |
| * The most common region classification is the Time Zone Database (TZDB), |
| * which defines regions such as 'Europe/Paris' and 'Asia/Tokyo'. |
| * <p> |
| * The region identifier, modeled by this class, is distinct from the |
| * underlying rules, modeled by {@link ZoneRules}. |
| * The rules are defined by governments and change frequently. |
| * By contrast, the region identifier is well-defined and long-lived. |
| * This separation also allows rules to be shared between regions if appropriate. |
| * |
| * @implSpec |
| * This class is immutable and thread-safe. |
| * |
| * @since 1.8 |
| */ |
| final class ZoneRegion extends ZoneId implements Serializable { |
| |
| /** |
| * Serialization version. |
| */ |
| private static final long serialVersionUID = 8386373296231747096L; |
| /** |
| * The time-zone ID, not null. |
| */ |
| private final String id; |
| /** |
| * The time-zone rules, null if zone ID was loaded leniently. |
| */ |
| private final transient ZoneRules rules; |
| |
| /** |
| * Obtains an instance of {@code ZoneId} from an identifier. |
| * |
| * @param zoneId the time-zone ID, not null |
| * @param checkAvailable whether to check if the zone ID is available |
| * @return the zone ID, not null |
| * @throws DateTimeException if the ID format is invalid |
| * @throws ZoneRulesException if checking availability and the ID cannot be found |
| */ |
| static ZoneRegion ofId(String zoneId, boolean checkAvailable) { |
| Objects.requireNonNull(zoneId, "zoneId"); |
| checkName(zoneId); |
| ZoneRules rules = null; |
| try { |
| // always attempt load for better behavior after deserialization |
| rules = ZoneRulesProvider.getRules(zoneId, true); |
| } catch (ZoneRulesException ex) { |
| if (checkAvailable) { |
| throw ex; |
| } |
| } |
| return new ZoneRegion(zoneId, rules); |
| } |
| |
| /** |
| * Checks that the given string is a legal ZondId name. |
| * |
| * @param zoneId the time-zone ID, not null |
| * @throws DateTimeException if the ID format is invalid |
| */ |
| private static void checkName(String zoneId) { |
| int n = zoneId.length(); |
| if (n < 2) { |
| throw new DateTimeException("Invalid ID for region-based ZoneId, invalid format: " + zoneId); |
| } |
| for (int i = 0; i < n; i++) { |
| char c = zoneId.charAt(i); |
| if (c >= 'a' && c <= 'z') continue; |
| if (c >= 'A' && c <= 'Z') continue; |
| if (c == '/' && i != 0) continue; |
| if (c >= '0' && c <= '9' && i != 0) continue; |
| if (c == '~' && i != 0) continue; |
| if (c == '.' && i != 0) continue; |
| if (c == '_' && i != 0) continue; |
| if (c == '+' && i != 0) continue; |
| if (c == '-' && i != 0) continue; |
| throw new DateTimeException("Invalid ID for region-based ZoneId, invalid format: " + zoneId); |
| } |
| } |
| |
| //------------------------------------------------------------------------- |
| /** |
| * Constructor. |
| * |
| * @param id the time-zone ID, not null |
| * @param rules the rules, null for lazy lookup |
| */ |
| ZoneRegion(String id, ZoneRules rules) { |
| this.id = id; |
| this.rules = rules; |
| } |
| |
| //----------------------------------------------------------------------- |
| @Override |
| public String getId() { |
| return id; |
| } |
| |
| @Override |
| public ZoneRules getRules() { |
| // additional query for group provider when null allows for possibility |
| // that the provider was updated after the ZoneId was created |
| return (rules != null ? rules : ZoneRulesProvider.getRules(id, false)); |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Writes the object using a |
| * <a href="../../serialized-form.html#java.time.Ser">dedicated serialized form</a>. |
| * @serialData |
| * <pre> |
| * out.writeByte(7); // identifies a ZoneId (not ZoneOffset) |
| * out.writeUTF(zoneId); |
| * </pre> |
| * |
| * @return the instance of {@code Ser}, not null |
| */ |
| private Object writeReplace() { |
| return new Ser(Ser.ZONE_REGION_TYPE, this); |
| } |
| |
| /** |
| * Defend against malicious streams. |
| * |
| * @param s the stream to read |
| * @throws InvalidObjectException always |
| */ |
| private void readObject(ObjectInputStream s) throws InvalidObjectException { |
| throw new InvalidObjectException("Deserialization via serialization delegate"); |
| } |
| |
| @Override |
| void write(DataOutput out) throws IOException { |
| out.writeByte(Ser.ZONE_REGION_TYPE); |
| writeExternal(out); |
| } |
| |
| void writeExternal(DataOutput out) throws IOException { |
| out.writeUTF(id); |
| } |
| |
| static ZoneId readExternal(DataInput in) throws IOException { |
| String id = in.readUTF(); |
| return ZoneId.of(id, false); |
| } |
| |
| } |