001/*
002 * Copyright (c) 2007-2013, Stephen Colebourne & Michael Nascimento Santos
003 *
004 * All rights reserved.
005 *
006 * Redistribution and use in source and binary forms, with or without
007 * modification, are permitted provided that the following conditions are met:
008 *
009 *  * Redistributions of source code must retain the above copyright notice,
010 *    this list of conditions and the following disclaimer.
011 *
012 *  * Redistributions in binary form must reproduce the above copyright notice,
013 *    this list of conditions and the following disclaimer in the documentation
014 *    and/or other materials provided with the distribution.
015 *
016 *  * Neither the name of JSR-310 nor the names of its contributors
017 *    may be used to endorse or promote products derived from this software
018 *    without specific prior written permission.
019 *
020 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
021 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
022 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
023 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
024 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
025 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
026 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
027 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
028 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
029 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
030 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
031 */
032package org.threeten.bp.jdk8;
033
034import static org.threeten.bp.temporal.ChronoField.ERA;
035
036import java.util.Locale;
037
038import org.threeten.bp.DateTimeException;
039import org.threeten.bp.format.DateTimeFormatterBuilder;
040import org.threeten.bp.format.TextStyle;
041import org.threeten.bp.temporal.Chrono;
042import org.threeten.bp.temporal.ChronoField;
043import org.threeten.bp.temporal.ChronoLocalDate;
044import org.threeten.bp.temporal.Era;
045import org.threeten.bp.temporal.Temporal;
046import org.threeten.bp.temporal.TemporalField;
047import org.threeten.bp.temporal.TemporalQueries;
048import org.threeten.bp.temporal.TemporalQuery;
049
050/**
051 * A temporary class providing implementations that will become default interface
052 * methods once integrated into JDK 8.
053 *
054 * @param <C> the chronology of this era
055 */
056public abstract class DefaultInterfaceEra<C extends Chrono<C>>
057        extends DefaultInterfaceTemporalAccessor
058        implements Era<C> {
059
060    @Override
061    public ChronoLocalDate<C> date(int year, int month, int day) {
062        return getChrono().date(this, year, month, day);
063    }
064
065    @Override
066    public ChronoLocalDate<C> dateYearDay(int year, int dayOfYear) {
067        return getChrono().dateYearDay(this, year, dayOfYear);
068    }
069
070    //-----------------------------------------------------------------------
071    @Override
072    public boolean isSupported(TemporalField field) {
073        if (field instanceof ChronoField) {
074            return field == ERA;
075        }
076        return field != null && field.doIsSupported(this);
077    }
078
079    @Override
080    public int get(TemporalField field) {
081        if (field == ERA) {
082            return getValue();
083        }
084        return range(field).checkValidIntValue(getLong(field), field);
085    }
086
087    @Override
088    public long getLong(TemporalField field) {
089        if (field == ERA) {
090            return getValue();
091        } else if (field instanceof ChronoField) {
092            throw new DateTimeException("Unsupported field: " + field.getName());
093        }
094        return field.doGet(this);
095    }
096
097    //-------------------------------------------------------------------------
098    @Override
099    public Temporal adjustInto(Temporal temporal) {
100        return temporal.with(ERA, getValue());
101    }
102
103    @Override
104    public <R> R query(TemporalQuery<R> query) {
105        if (query == TemporalQueries.chrono()) {
106            return (R) getChrono();
107        }
108        return super.query(query);
109    }
110
111    //-----------------------------------------------------------------------
112    @Override
113    public String getText(TextStyle style, Locale locale) {
114        return new DateTimeFormatterBuilder().appendText(ERA, style).toFormatter(locale).print(this);
115    }
116
117}