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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.system.procs;
import com.impossibl.postgres.system.Context;
import com.impossibl.postgres.system.ConversionException;
import com.impossibl.postgres.system.ServerInfo;
import com.impossibl.postgres.types.Type;
import java.io.IOException;
import java.sql.Date;
import java.sql.Time;
import java.sql.Timestamp;
import java.time.Instant;
import java.time.LocalDate;
import java.time.LocalTime;
import java.time.OffsetDateTime;
import java.time.OffsetTime;
import java.time.ZoneOffset;
import java.time.ZonedDateTime;
import java.time.temporal.ChronoField;
import java.time.temporal.TemporalAccessor;
import java.util.Calendar;
import static java.util.concurrent.TimeUnit.DAYS;
import static java.util.concurrent.TimeUnit.MICROSECONDS;
import static java.util.concurrent.TimeUnit.MILLISECONDS;
import static java.util.concurrent.TimeUnit.NANOSECONDS;
import io.netty.buffer.ByteBuf;
public class TimesWithoutTZ extends SettingSelectProcProvider {
public TimesWithoutTZ() {
super(ServerInfo::hasIntegerDateTimes,
new TxtEncoder(), new TxtDecoder(), new BinEncoder(), new BinDecoder(),
new TxtEncoder(), new TxtDecoder(), null, null,
"time_");
}
private static LocalTime convertInput(Context context, Type type, Object value, Calendar sourceCalendar) throws ConversionException {
if (value instanceof LocalTime) {
return (LocalTime) value;
}
if (value instanceof CharSequence) {
CharSequence chars = (CharSequence) value;
TemporalAccessor parsed = context.getClientTimeFormat().getParser().parse(chars);
ZoneOffset offset =
ZoneOffset.ofTotalSeconds((int) MILLISECONDS.toSeconds(sourceCalendar.getTimeZone().getRawOffset()));
if (parsed.isSupported(ChronoField.OFFSET_SECONDS)) {
return OffsetTime.from(parsed).withOffsetSameInstant(offset).toLocalTime();
}
return LocalTime.from(parsed).atOffset(offset).toLocalTime();
}
if (value instanceof Time) {
Time t = (Time) value;
return Instant.ofEpochMilli(t.getTime()).atZone(sourceCalendar.getTimeZone().toZoneId()).toLocalTime();
}
if (value instanceof Date) {
Date d = (Date) value;
return Instant.ofEpochMilli(d.getTime()).atZone(sourceCalendar.getTimeZone().toZoneId()).toLocalTime();
}
if (value instanceof Timestamp) {
Timestamp ts = (Timestamp) value;
return ts.toInstant().atZone(sourceCalendar.getTimeZone().toZoneId()).toLocalTime();
}
throw new ConversionException(value.getClass(), type);
}
private static Object convertOutput(Context context, Type type, LocalTime time, Class targetClass, Calendar targetCalendar) throws ConversionException {
if (targetClass == LocalTime.class) {
return time;
}
if (targetClass == OffsetTime.class) {
ZoneOffset offset =
ZoneOffset.ofTotalSeconds((int) MILLISECONDS.toSeconds(targetCalendar.getTimeZone().getRawOffset()));
return time.atOffset(offset);
}
if (targetClass == String.class) {
return context.getClientTimeFormat().getPrinter().format(time);
}
if (targetClass == Time.class) {
LocalDate date = LocalDate.of(1970, 1, 1);
OffsetDateTime dateTime = date.atTime(time).atZone(targetCalendar.getTimeZone().toZoneId()).toOffsetDateTime().withOffsetSameInstant(ZoneOffset.UTC);
return new Time(dateTime.toInstant().toEpochMilli());
}
if (targetClass == Timestamp.class) {
LocalDate date = LocalDate.of(1970, 1, 1);
ZonedDateTime dateTime = date.atTime(time).atZone(targetCalendar.getTimeZone().toZoneId());
return Timestamp.from(dateTime.toInstant());
}
throw new ConversionException(type, targetClass);
}
private static class BinDecoder extends BaseBinaryDecoder {
BinDecoder() {
super(8);
}
@Override
public Class getDefaultClass() {
return java.sql.Time.class;
}
@Override
protected Object decodeValue(Context context, Type type, Short typeLength, Integer typeModifier, ByteBuf buffer, Class targetClass, Object targetContext) throws IOException {
Calendar calendar = targetContext != null ? (Calendar) targetContext : Calendar.getInstance();
long micros = buffer.readLong();
LocalTime time = LocalTime.ofNanoOfDay(MICROSECONDS.toNanos(micros));
return convertOutput(context, type, time, targetClass, calendar);
}
}
private static class BinEncoder extends BaseBinaryEncoder {
BinEncoder() {
super(8);
}
@Override
protected void encodeValue(Context context, Type type, Object value, Object sourceContext, ByteBuf buffer) throws IOException {
Calendar calendar = sourceContext != null ? (Calendar) sourceContext : Calendar.getInstance();
LocalTime time = convertInput(context, type, value, calendar);
// Convert to micros rounding nanoseconds
long micros = NANOSECONDS.toMicros(time.toNanoOfDay() + 500) % DAYS.toMicros(1);
buffer.writeLong(micros);
}
}
static class TxtDecoder extends BaseTextDecoder {
@Override
public Class getDefaultClass() {
return java.sql.Time.class;
}
@Override
protected Object decodeValue(Context context, Type type, Short typeLength, Integer typeModifier, CharSequence buffer, Class targetClass, Object targetContext) throws IOException {
Calendar calendar = targetContext != null ? (Calendar) targetContext : Calendar.getInstance();
TemporalAccessor parsed = context.getServerTimeFormat().getParser().parse(buffer);
LocalTime time = LocalTime.from(parsed);
return convertOutput(context, type, time, targetClass, calendar);
}
}
static class TxtEncoder extends BaseTextEncoder {
@Override
protected void encodeValue(Context context, Type type, Object value, Object sourceContext, StringBuilder buffer) throws IOException {
Calendar calendar = sourceContext != null ? (Calendar) sourceContext : Calendar.getInstance();
LocalTime time = convertInput(context, type, value, calendar);
String strVal = context.getServerTimeFormat().getPrinter().format(time);
buffer.append(strVal);
}
}
}