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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 org.apache.hadoop.hive.common.type;
import java.math.BigDecimal;
import java.util.concurrent.TimeUnit;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.apache.commons.lang.builder.HashCodeBuilder;
import org.apache.hive.common.util.DateUtils;
/**
* Day-time interval type representing an offset in days/hours/minutes/seconds,
* with nanosecond precision.
* 1 day = 24 hours = 1440 minutes = 86400 seconds
*/
public class HiveIntervalDayTime implements Comparable {
// days/hours/minutes/seconds all represented as seconds
protected long totalSeconds;
protected int nanos;
public HiveIntervalDayTime() {
}
public HiveIntervalDayTime(int days, int hours, int minutes, int seconds, int nanos) {
set(days, hours, minutes, seconds, nanos);
}
public HiveIntervalDayTime(long seconds, int nanos) {
set(seconds, nanos);
}
public HiveIntervalDayTime(BigDecimal seconds) {
set(seconds);
}
public HiveIntervalDayTime(HiveIntervalDayTime other) {
set(other.totalSeconds, other.nanos);
}
public int getDays() {
return (int) TimeUnit.SECONDS.toDays(totalSeconds);
}
public int getHours() {
return (int) (TimeUnit.SECONDS.toHours(totalSeconds) % TimeUnit.DAYS.toHours(1));
}
public int getMinutes() {
return (int) (TimeUnit.SECONDS.toMinutes(totalSeconds) % TimeUnit.HOURS.toMinutes(1));
}
public int getSeconds() {
return (int) (totalSeconds % TimeUnit.MINUTES.toSeconds(1));
}
public int getNanos() {
return nanos;
}
/**
* Returns days/hours/minutes all converted into seconds.
* Nanos still need to be retrieved using getNanos()
* @return
*/
public long getTotalSeconds() {
return totalSeconds;
}
/**
* Ensures that the seconds and nanoseconds fields have consistent sign
*/
protected void normalizeSecondsAndNanos() {
if (totalSeconds > 0 && nanos < 0) {
--totalSeconds;
nanos += DateUtils.NANOS_PER_SEC;
} else if (totalSeconds < 0 && nanos > 0) {
++totalSeconds;
nanos -= DateUtils.NANOS_PER_SEC;
}
}
public void set(int days, int hours, int minutes, int seconds, int nanos) {
long totalSeconds = seconds;
totalSeconds += TimeUnit.DAYS.toSeconds(days);
totalSeconds += TimeUnit.HOURS.toSeconds(hours);
totalSeconds += TimeUnit.MINUTES.toSeconds(minutes);
totalSeconds += TimeUnit.NANOSECONDS.toSeconds(nanos);
nanos = nanos % DateUtils.NANOS_PER_SEC;
this.totalSeconds = totalSeconds;
this.nanos = nanos;
normalizeSecondsAndNanos();
}
public void set(long seconds, int nanos) {
this.totalSeconds = seconds;
this.nanos = nanos;
normalizeSecondsAndNanos();
}
public void set(BigDecimal totalSecondsBd) {
long totalSeconds = totalSecondsBd.longValue();
BigDecimal fractionalSecs = totalSecondsBd.remainder(BigDecimal.ONE);
int nanos = fractionalSecs.multiply(DateUtils.NANOS_PER_SEC_BD).intValue();
set(totalSeconds, nanos);
}
public void set(HiveIntervalDayTime other) {
set(other.getTotalSeconds(), other.getNanos());
}
public HiveIntervalDayTime negate() {
return new HiveIntervalDayTime(-getTotalSeconds(), -getNanos());
}
@Override
public int compareTo(HiveIntervalDayTime other) {
long cmp = this.totalSeconds - other.totalSeconds;
if (cmp == 0) {
cmp = this.nanos - other.nanos;
}
if (cmp != 0) {
cmp = cmp > 0 ? 1 : -1;
}
return (int) cmp;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (!(obj instanceof HiveIntervalDayTime)) {
return false;
}
return 0 == compareTo((HiveIntervalDayTime) obj);
}
@Override
public int hashCode() {
return new HashCodeBuilder().append(totalSeconds).append(nanos).toHashCode();
}
@Override
public String toString() {
// If normalize() was used, then day-hour-minute-second-nanos should have the same sign.
// This is currently working with that assumption.
boolean isNegative = (totalSeconds < 0 || nanos < 0);
String daySecondSignStr = isNegative ? "-" : "";
return String.format("%s%d %02d:%02d:%02d.%09d",
daySecondSignStr, Math.abs(getDays()),
Math.abs(getHours()), Math.abs(getMinutes()),
Math.abs(getSeconds()), Math.abs(getNanos()));
}
public static HiveIntervalDayTime valueOf(String strVal) {
HiveIntervalDayTime result = null;
if (strVal == null) {
throw new IllegalArgumentException("Interval day-time string was null");
}
Matcher patternMatcher = PATTERN_MATCHER.get();
patternMatcher.reset(strVal);
if (patternMatcher.matches()) {
// Parse out the individual parts
try {
// Sign - whether interval is positive or negative
int sign = 1;
String field = patternMatcher.group(1);
if (field != null && field.equals("-")) {
sign = -1;
}
int days = sign *
DateUtils.parseNumericValueWithRange("day", patternMatcher.group(2),
0, Integer.MAX_VALUE);
byte hours = (byte) (sign *
DateUtils.parseNumericValueWithRange("hour", patternMatcher.group(3), 0, 23));
byte minutes = (byte) (sign *
DateUtils.parseNumericValueWithRange("minute", patternMatcher.group(4), 0, 59));
int seconds = 0;
int nanos = 0;
field = patternMatcher.group(5);
if (field != null) {
BigDecimal bdSeconds = new BigDecimal(field);
if (bdSeconds.compareTo(DateUtils.MAX_INT_BD) > 0) {
throw new IllegalArgumentException("seconds value of " + bdSeconds + " too large");
}
seconds = sign * bdSeconds.intValue();
nanos = sign * bdSeconds.subtract(new BigDecimal(bdSeconds.toBigInteger()))
.multiply(DateUtils.NANOS_PER_SEC_BD).intValue();
}
result = new HiveIntervalDayTime(days, hours, minutes, seconds, nanos);
} catch (Exception err) {
throw new IllegalArgumentException("Error parsing interval day-time string: " + strVal, err);
}
} else {
throw new IllegalArgumentException(
"Interval string does not match day-time format of 'd h:m:s.n': " + strVal);
}
return result;
}
// Simple pattern: D H:M:S.nnnnnnnnn
private final static String PARSE_PATTERN =
"([+|-])?(\\d+) (\\d+):(\\d+):((\\d+)(\\.(\\d+))?)";
private static final ThreadLocal PATTERN_MATCHER = new ThreadLocal() {
@Override
protected Matcher initialValue() {
return Pattern.compile(PARSE_PATTERN).matcher("");
}
};
}
