| /* |
| * 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 |
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| * 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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| * 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) 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.chrono; |
| |
| import static java.time.temporal.ChronoField.ERA; |
| |
| import java.time.DateTimeException; |
| import java.time.temporal.ChronoField; |
| import java.time.temporal.TemporalField; |
| import java.time.temporal.UnsupportedTemporalTypeException; |
| import java.time.temporal.ValueRange; |
| |
| /** |
| * An era in the Hijrah calendar system. |
| * <p> |
| * The Hijrah calendar system has only one era covering the |
| * proleptic years greater than zero. |
| * <p> |
| * <b>Do not use {@code ordinal()} to obtain the numeric representation of {@code HijrahEra}. |
| * Use {@code getValue()} instead.</b> |
| * |
| * @implSpec |
| * This is an immutable and thread-safe enum. |
| * |
| * @since 1.8 |
| */ |
| public enum HijrahEra implements Era { |
| |
| /** |
| * The singleton instance for the current era, 'Anno Hegirae', |
| * which has the numeric value 1. |
| */ |
| AH; |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Obtains an instance of {@code HijrahEra} from an {@code int} value. |
| * <p> |
| * The current era, which is the only accepted value, has the value 1 |
| * |
| * @param hijrahEra the era to represent, only 1 supported |
| * @return the HijrahEra.AH singleton, not null |
| * @throws DateTimeException if the value is invalid |
| */ |
| public static HijrahEra of(int hijrahEra) { |
| if (hijrahEra == 1 ) { |
| return AH; |
| } else { |
| throw new DateTimeException("Invalid era: " + hijrahEra); |
| } |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Gets the numeric era {@code int} value. |
| * <p> |
| * The era AH has the value 1. |
| * |
| * @return the era value, 1 (AH) |
| */ |
| @Override |
| public int getValue() { |
| return 1; |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Gets the range of valid values for the specified field. |
| * <p> |
| * The range object expresses the minimum and maximum valid values for a field. |
| * This era is used to enhance the accuracy of the returned range. |
| * If it is not possible to return the range, because the field is not supported |
| * or for some other reason, an exception is thrown. |
| * <p> |
| * If the field is a {@link ChronoField} then the query is implemented here. |
| * The {@code ERA} field returns the range. |
| * All other {@code ChronoField} instances will throw an {@code UnsupportedTemporalTypeException}. |
| * <p> |
| * If the field is not a {@code ChronoField}, then the result of this method |
| * is obtained by invoking {@code TemporalField.rangeRefinedBy(TemporalAccessor)} |
| * passing {@code this} as the argument. |
| * Whether the range can be obtained is determined by the field. |
| * <p> |
| * The {@code ERA} field returns a range for the one valid Hijrah era. |
| * |
| * @param field the field to query the range for, not null |
| * @return the range of valid values for the field, not null |
| * @throws DateTimeException if the range for the field cannot be obtained |
| * @throws UnsupportedTemporalTypeException if the unit is not supported |
| */ |
| @Override // override as super would return range from 0 to 1 |
| public ValueRange range(TemporalField field) { |
| if (field == ERA) { |
| return ValueRange.of(1, 1); |
| } |
| return Era.super.range(field); |
| } |
| |
| } |