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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to you under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.hazelcast.org.apache.calcite.util;

import com.hazelcast.org.apache.calcite.avatica.util.DateTimeUtils;

import com.hazelcast.com.google.common.base.Preconditions;

import com.hazelcast.org.checkerframework.checker.nullness.qual.Nullable;

import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Locale;
import java.util.TimeZone;

/**
 * Timestamp with time-zone literal.
 *
 * 

Immutable, internally represented as a string (in ISO format), * and can support unlimited precision (milliseconds, nanoseconds). */ public class TimestampWithTimeZoneString implements Comparable { final TimestampString localDateTime; final TimeZone timeZone; final String v; /** Creates a TimestampWithTimeZoneString. */ public TimestampWithTimeZoneString(TimestampString localDateTime, TimeZone timeZone) { this.localDateTime = localDateTime; this.timeZone = timeZone; this.v = localDateTime.toString() + " " + timeZone.getID(); } /** Creates a TimestampWithTimeZoneString. */ public TimestampWithTimeZoneString(String v) { this.localDateTime = new TimestampString(v.substring(0, v.indexOf(' ', 11))); String timeZoneString = v.substring(v.indexOf(' ', 11) + 1); Preconditions.checkArgument(DateTimeStringUtils.isValidTimeZone(timeZoneString)); this.timeZone = TimeZone.getTimeZone(timeZoneString); this.v = v; } /** Creates a TimestampWithTimeZoneString for year, month, day, hour, minute, second, * millisecond values in the given time-zone. */ public TimestampWithTimeZoneString(int year, int month, int day, int h, int m, int s, String timeZone) { this(DateTimeStringUtils.ymdhms(new StringBuilder(), year, month, day, h, m, s).toString() + " " + timeZone); } /** Sets the fraction field of a {@code TimestampWithTimeZoneString} to a given number * of milliseconds. Nukes the value set via {@link #withNanos}. * *

For example, * {@code new TimestampWithTimeZoneString(1970, 1, 1, 2, 3, 4, "GMT").withMillis(56)} * yields {@code TIMESTAMP WITH LOCAL TIME ZONE '1970-01-01 02:03:04.056 GMT'}. */ public TimestampWithTimeZoneString withMillis(int millis) { Preconditions.checkArgument(millis >= 0 && millis < 1000); return withFraction(DateTimeStringUtils.pad(3, millis)); } /** Sets the fraction field of a {@code TimestampWithTimeZoneString} to a given number * of nanoseconds. Nukes the value set via {@link #withMillis(int)}. * *

For example, * {@code new TimestampWithTimeZoneString(1970, 1, 1, 2, 3, 4, "GMT").withNanos(56789)} * yields {@code TIMESTAMP WITH LOCAL TIME ZONE '1970-01-01 02:03:04.000056789 GMT'}. */ public TimestampWithTimeZoneString withNanos(int nanos) { Preconditions.checkArgument(nanos >= 0 && nanos < 1000000000); return withFraction(DateTimeStringUtils.pad(9, nanos)); } /** Sets the fraction field of a {@code TimestampString}. * The precision is determined by the number of leading zeros. * Trailing zeros are stripped. * *

For example, {@code * new TimestampWithTimeZoneString(1970, 1, 1, 2, 3, 4, "GMT").withFraction("00506000")} * yields {@code TIMESTAMP WITH LOCAL TIME ZONE '1970-01-01 02:03:04.00506 GMT'}. */ public TimestampWithTimeZoneString withFraction(String fraction) { return new TimestampWithTimeZoneString( localDateTime.withFraction(fraction), timeZone); } public TimestampWithTimeZoneString withTimeZone(TimeZone timeZone) { if (this.timeZone.equals(timeZone)) { return this; } String localDateTimeString = localDateTime.toString(); String v; String fraction; int i = localDateTimeString.indexOf('.'); if (i >= 0) { v = localDateTimeString.substring(0, i); fraction = localDateTimeString.substring(i + 1); } else { v = localDateTimeString; fraction = null; } final DateTimeUtils.PrecisionTime pt = DateTimeUtils.parsePrecisionDateTimeLiteral(v, new SimpleDateFormat(DateTimeUtils.TIMESTAMP_FORMAT_STRING, Locale.ROOT), this.timeZone, -1); pt.getCalendar().setTimeZone(timeZone); if (fraction != null) { return new TimestampWithTimeZoneString( pt.getCalendar().get(Calendar.YEAR), pt.getCalendar().get(Calendar.MONTH) + 1, pt.getCalendar().get(Calendar.DAY_OF_MONTH), pt.getCalendar().get(Calendar.HOUR_OF_DAY), pt.getCalendar().get(Calendar.MINUTE), pt.getCalendar().get(Calendar.SECOND), timeZone.getID()) .withFraction(fraction); } return new TimestampWithTimeZoneString( pt.getCalendar().get(Calendar.YEAR), pt.getCalendar().get(Calendar.MONTH) + 1, pt.getCalendar().get(Calendar.DAY_OF_MONTH), pt.getCalendar().get(Calendar.HOUR_OF_DAY), pt.getCalendar().get(Calendar.MINUTE), pt.getCalendar().get(Calendar.SECOND), timeZone.getID()); } @Override public String toString() { return v; } @Override public boolean equals(@Nullable Object o) { // The value is in canonical form (no trailing zeros). return o == this || o instanceof TimestampWithTimeZoneString && ((TimestampWithTimeZoneString) o).v.equals(v); } @Override public int hashCode() { return v.hashCode(); } @Override public int compareTo(TimestampWithTimeZoneString o) { return v.compareTo(o.v); } public TimestampWithTimeZoneString round(int precision) { Preconditions.checkArgument(precision >= 0); return new TimestampWithTimeZoneString( localDateTime.round(precision), timeZone); } /** Creates a TimestampWithTimeZoneString that is a given number of milliseconds since * the epoch UTC. */ public static TimestampWithTimeZoneString fromMillisSinceEpoch(long millis) { return new TimestampWithTimeZoneString( DateTimeUtils.unixTimestampToString(millis) + " " + DateTimeUtils.UTC_ZONE.getID()) .withMillis((int) DateTimeUtils.floorMod(millis, 1000)); } /** Converts this TimestampWithTimeZoneString to a string, truncated or padded with * zeros to a given precision. */ public String toString(int precision) { Preconditions.checkArgument(precision >= 0); return localDateTime.toString(precision) + " " + timeZone.getID(); } public DateString getLocalDateString() { return new DateString(localDateTime.toString().substring(0, 10)); } public TimeString getLocalTimeString() { return new TimeString(localDateTime.toString().substring(11)); } public TimestampString getLocalTimestampString() { return localDateTime; } }





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