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/**
* Copyright (c) 2013, impossibl.com
* 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 impossibl.com 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 com.impossibl.postgres.datetime;
import java.time.LocalDateTime;
import java.time.OffsetDateTime;
import java.time.ZonedDateTime;
import java.time.chrono.IsoChronology;
import java.time.chrono.IsoEra;
import java.time.format.DateTimeFormatter;
import java.time.format.DateTimeFormatterBuilder;
import java.time.format.SignStyle;
import java.time.temporal.ChronoField;
import java.time.temporal.Temporal;
import java.time.temporal.TemporalAccessor;
import static java.time.format.DateTimeFormatter.ISO_LOCAL_TIME;
import static java.time.temporal.ChronoField.DAY_OF_MONTH;
import static java.time.temporal.ChronoField.MONTH_OF_YEAR;
import static java.time.temporal.ChronoField.YEAR_OF_ERA;
public class ISOTimestampFormat implements DateTimeFormat {
private Parser parser = new Parser();
private Printer printer = new Printer();
@Override
public Parser getParser() {
return parser;
}
@Override
public Printer getPrinter() {
return printer;
}
private static final DateTimeFormatter FMT =
new DateTimeFormatterBuilder()
.parseCaseInsensitive()
.appendValue(YEAR_OF_ERA, 4, 10, SignStyle.EXCEEDS_PAD)
.parseLenient()
.appendLiteral('-')
.appendValue(MONTH_OF_YEAR, 2)
.appendLiteral('-')
.appendValue(DAY_OF_MONTH, 2)
.appendLiteral(' ')
.append(ISO_LOCAL_TIME)
.optionalStart()
.appendOffset("+HH:mm", "+00")
.optionalEnd()
.toFormatter()
.withChronology(IsoChronology.INSTANCE);
private static final DateTimeFormatter FMT_ERA =
new DateTimeFormatterBuilder()
.parseCaseInsensitive()
.appendValue(YEAR_OF_ERA, 4, 10, SignStyle.EXCEEDS_PAD)
.parseLenient()
.appendLiteral('-')
.appendValue(MONTH_OF_YEAR, 2)
.appendLiteral('-')
.appendValue(DAY_OF_MONTH, 2)
.appendLiteral(' ')
.append(ISO_LOCAL_TIME)
.optionalStart()
.appendOffset("+HH:mm", "+00")
.optionalEnd()
.optionalStart()
.appendPattern(" GG")
.toFormatter()
.withChronology(IsoChronology.INSTANCE);
public static class Parser implements DateTimeFormat.Parser {
@Override
public TemporalAccessor parse(CharSequence text) {
return FMT_ERA.parseBest(text, ZonedDateTime::from, OffsetDateTime::from, LocalDateTime::from);
}
}
static class Printer implements DateTimeFormat.Printer {
@Override
public String format(Temporal temporal) {
if (temporal.get(ChronoField.ERA) != IsoEra.CE.getValue()) {
return FMT_ERA.format(temporal);
}
return FMT.format(temporal);
}
}
}