DateTimeUtils.java
/*
* Licensed 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.facebook.presto.util;
import com.facebook.presto.client.IntervalDayTime;
import com.facebook.presto.client.IntervalYearMonth;
import com.facebook.presto.common.type.TimeZoneKey;
import com.facebook.presto.spi.PrestoException;
import com.facebook.presto.sql.tree.IntervalLiteral.IntervalField;
import org.joda.time.DateTime;
import org.joda.time.DateTimeZone;
import org.joda.time.DurationFieldType;
import org.joda.time.LocalDateTime;
import org.joda.time.MutablePeriod;
import org.joda.time.Period;
import org.joda.time.ReadWritablePeriod;
import org.joda.time.chrono.ISOChronology;
import org.joda.time.format.DateTimeFormat;
import org.joda.time.format.DateTimeFormatter;
import org.joda.time.format.DateTimeFormatterBuilder;
import org.joda.time.format.DateTimeParser;
import org.joda.time.format.DateTimePrinter;
import org.joda.time.format.ISODateTimeFormat;
import org.joda.time.format.PeriodFormatter;
import org.joda.time.format.PeriodFormatterBuilder;
import org.joda.time.format.PeriodParser;
import javax.annotation.Nullable;
import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandles;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
import java.util.Optional;
import java.util.concurrent.TimeUnit;
import java.util.stream.Stream;
import static com.facebook.presto.common.type.DateTimeEncoding.unpackMillisUtc;
import static com.facebook.presto.spi.StandardErrorCode.INVALID_FUNCTION_ARGUMENT;
import static com.facebook.presto.util.DateTimeZoneIndex.getChronology;
import static com.facebook.presto.util.DateTimeZoneIndex.getDateTimeZone;
import static com.facebook.presto.util.DateTimeZoneIndex.packDateTimeWithZone;
import static com.facebook.presto.util.DateTimeZoneIndex.unpackChronology;
import static com.facebook.presto.util.DateTimeZoneIndex.unpackDateTimeZone;
import static com.google.common.base.Preconditions.checkArgument;
import static java.lang.String.format;
public final class DateTimeUtils
{
private DateTimeUtils()
{
}
private static final DateTimeFormatter DATE_FORMATTER = ISODateTimeFormat.date().withZoneUTC();
public static int parseDate(String value)
{
return (int) TimeUnit.MILLISECONDS.toDays(DATE_FORMATTER.parseMillis(value));
}
public static String printDate(int days)
{
return DATE_FORMATTER.print(TimeUnit.DAYS.toMillis(days));
}
private static final DateTimeFormatter LEGACY_TIMESTAMP_WITHOUT_TIME_ZONE_FORMATTER;
private static final DateTimeFormatter TIMESTAMP_WITHOUT_TIME_ZONE_FORMATTER;
private static final DateTimeFormatter TIMESTAMP_WITH_TIME_ZONE_FORMATTER;
private static final DateTimeFormatter TIMESTAMP_WITH_OR_WITHOUT_TIME_ZONE_FORMATTER;
static {
DateTimeParser[] timestampWithoutTimeZoneParser = {
DateTimeFormat.forPattern("yyyy-M-d").getParser(),
DateTimeFormat.forPattern("yyyy-M-d H:m").getParser(),
DateTimeFormat.forPattern("yyyy-M-d H:m:s").getParser(),
DateTimeFormat.forPattern("yyyy-M-d H:m:s.SSS").getParser(),
DateTimeFormat.forPattern("yyyy-M-d H:m:s.SSSSSS").getParser(),
DateTimeFormat.forPattern("yyyy-M-d H:m:s.SSSSSSSSS").getParser()};
DateTimePrinter timestampWithoutTimeZonePrinter = DateTimeFormat.forPattern("yyyy-MM-dd HH:mm:ss.SSS").getPrinter();
LEGACY_TIMESTAMP_WITHOUT_TIME_ZONE_FORMATTER = new DateTimeFormatterBuilder()
.append(timestampWithoutTimeZonePrinter, timestampWithoutTimeZoneParser)
.toFormatter()
.withOffsetParsed();
TIMESTAMP_WITHOUT_TIME_ZONE_FORMATTER = new DateTimeFormatterBuilder()
.append(timestampWithoutTimeZonePrinter, timestampWithoutTimeZoneParser)
.toFormatter()
.withZoneUTC();
DateTimeParser[] timestampWithTimeZoneParser = {
DateTimeFormat.forPattern("yyyy-M-dZ").getParser(),
DateTimeFormat.forPattern("yyyy-M-d Z").getParser(),
DateTimeFormat.forPattern("yyyy-M-d H:mZ").getParser(),
DateTimeFormat.forPattern("yyyy-M-d H:m Z").getParser(),
DateTimeFormat.forPattern("yyyy-M-d H:m:sZ").getParser(),
DateTimeFormat.forPattern("yyyy-M-d H:m:s Z").getParser(),
DateTimeFormat.forPattern("yyyy-M-d H:m:s.SSSZ").getParser(),
DateTimeFormat.forPattern("yyyy-M-d H:m:s.SSS Z").getParser(),
DateTimeFormat.forPattern("yyyy-M-d H:m:s.SSSSSSZ").getParser(),
DateTimeFormat.forPattern("yyyy-M-d H:m:s.SSSSSS Z").getParser(),
DateTimeFormat.forPattern("yyyy-M-d H:m:s.SSSSSSSSSZ").getParser(),
DateTimeFormat.forPattern("yyyy-M-d H:m:s.SSSSSSSSS Z").getParser(),
DateTimeFormat.forPattern("yyyy-M-dZZZ").getParser(),
DateTimeFormat.forPattern("yyyy-M-d ZZZ").getParser(),
DateTimeFormat.forPattern("yyyy-M-d H:mZZZ").getParser(),
DateTimeFormat.forPattern("yyyy-M-d H:m ZZZ").getParser(),
DateTimeFormat.forPattern("yyyy-M-d H:m:sZZZ").getParser(),
DateTimeFormat.forPattern("yyyy-M-d H:m:s ZZZ").getParser(),
DateTimeFormat.forPattern("yyyy-M-d H:m:s.SSSZZZ").getParser(),
DateTimeFormat.forPattern("yyyy-M-d H:m:s.SSS ZZZ").getParser(),
DateTimeFormat.forPattern("yyyy-M-d H:m:s.SSSSSSZZZ").getParser(),
DateTimeFormat.forPattern("yyyy-M-d H:m:s.SSSSSS ZZZ").getParser(),
DateTimeFormat.forPattern("yyyy-M-d H:m:s.SSSSSSSSSZZZ").getParser(),
DateTimeFormat.forPattern("yyyy-M-d H:m:s.SSSSSSSSS ZZZ").getParser()};
DateTimePrinter timestampWithTimeZonePrinter = DateTimeFormat.forPattern("yyyy-MM-dd HH:mm:ss.SSS ZZZ").getPrinter();
TIMESTAMP_WITH_TIME_ZONE_FORMATTER = new DateTimeFormatterBuilder()
.append(timestampWithTimeZonePrinter, timestampWithTimeZoneParser)
.toFormatter()
.withOffsetParsed();
DateTimeParser[] timestampWithOrWithoutTimeZoneParser = Stream.concat(Stream.of(timestampWithoutTimeZoneParser), Stream.of(timestampWithTimeZoneParser))
.toArray(DateTimeParser[]::new);
TIMESTAMP_WITH_OR_WITHOUT_TIME_ZONE_FORMATTER = new DateTimeFormatterBuilder()
.append(timestampWithTimeZonePrinter, timestampWithOrWithoutTimeZoneParser)
.toFormatter()
.withOffsetParsed();
}
/**
* {@link LocalDateTime#getLocalMillis()}
*/
private static final MethodHandle getLocalMillis;
static {
try {
Method getLocalMillisMethod = LocalDateTime.class.getDeclaredMethod("getLocalMillis");
getLocalMillisMethod.setAccessible(true);
getLocalMillis = MethodHandles.lookup().unreflect(getLocalMillisMethod);
}
catch (ReflectiveOperationException e) {
throw new RuntimeException(e);
}
}
public static long toTimeStampInMillis(@Nullable DateTime dateTime)
{
if (dateTime == null) {
return 0L;
}
return dateTime.getMillis();
}
/**
* Parse a string (optionally containing a zone) as a value of either TIMESTAMP or TIMESTAMP WITH TIME ZONE type.
* <p>
* For example: {@code "2000-01-01 01:23:00"} is parsed to TIMESTAMP {@code 2000-01-01T01:23:00}
* and {@code "2000-01-01 01:23:00 +01:23"} is parsed to TIMESTAMP WITH TIME ZONE
* {@code 2000-01-01T01:23:00.000+01:23}.
*
* @return stack representation of TIMESTAMP or TIMESTAMP WITH TIME ZONE type, depending on input
*/
public static long parseTimestampLiteral(String value)
{
try {
DateTime dateTime = TIMESTAMP_WITH_TIME_ZONE_FORMATTER.parseDateTime(value);
return packDateTimeWithZone(dateTime);
}
catch (Exception e) {
return TIMESTAMP_WITHOUT_TIME_ZONE_FORMATTER.parseMillis(value);
}
}
/**
* Parse a string (optionally containing a zone) as a value of either TIMESTAMP or TIMESTAMP WITH TIME ZONE type.
* If the string doesn't specify a zone, it is interpreted in {@code timeZoneKey} zone.
*
* @return stack representation of legacy TIMESTAMP or TIMESTAMP WITH TIME ZONE type, depending on input
*/
@Deprecated
public static long parseTimestampLiteral(TimeZoneKey timeZoneKey, String value)
{
try {
DateTime dateTime = TIMESTAMP_WITH_TIME_ZONE_FORMATTER.parseDateTime(value);
return packDateTimeWithZone(dateTime);
}
catch (RuntimeException e) {
return LEGACY_TIMESTAMP_WITHOUT_TIME_ZONE_FORMATTER.withChronology(getChronology(timeZoneKey)).parseMillis(value);
}
}
/**
* Parse a string (optionally containing a zone) as a value of TIMESTAMP WITH TIME ZONE type.
* If the string doesn't specify a zone, it is interpreted in {@code timeZoneKey} zone.
* <p>
* For example: {@code "2000-01-01 01:23:00"} is parsed to TIMESTAMP WITH TIME ZONE
* {@code 2000-01-01T01:23:00 <provided zone>} and {@code "2000-01-01 01:23:00 +01:23"}
* is parsed to TIMESTAMP WITH TIME ZONE {@code 2000-01-01T01:23:00.000+01:23}.
*
* @return stack representation of TIMESTAMP WITH TIME ZONE type
*/
public static long parseTimestampWithTimeZone(TimeZoneKey timeZoneKey, String timestampWithTimeZone)
{
DateTime dateTime = TIMESTAMP_WITH_OR_WITHOUT_TIME_ZONE_FORMATTER.withChronology(getChronology(timeZoneKey)).withOffsetParsed().parseDateTime(timestampWithTimeZone);
return packDateTimeWithZone(dateTime);
}
/**
* Parse a string (optionally containing a zone) as a value of TIMESTAMP type.
* If the string specifies a zone, the zone is discarded.
* <p>
* For example: {@code "2000-01-01 01:23:00"} is parsed to TIMESTAMP {@code 2000-01-01T01:23:00}
* and {@code "2000-01-01 01:23:00 +01:23"} is also parsed to TIMESTAMP {@code 2000-01-01T01:23:00.000}.
*
* @return stack representation of TIMESTAMP type
*/
public static long parseTimestampWithoutTimeZone(String value)
{
LocalDateTime localDateTime = TIMESTAMP_WITH_OR_WITHOUT_TIME_ZONE_FORMATTER.parseLocalDateTime(value);
try {
return (long) getLocalMillis.invokeExact(localDateTime);
}
catch (Throwable e) {
throw new RuntimeException(e);
}
}
/**
* Parse a string (optionally containing a zone) as a value of TIMESTAMP type.
* If the string doesn't specify a zone, it is interpreted in {@code timeZoneKey} zone.
*
* @return stack representation of legacy TIMESTAMP type
*/
@Deprecated
public static long parseTimestampWithoutTimeZone(TimeZoneKey timeZoneKey, String value)
{
return TIMESTAMP_WITH_OR_WITHOUT_TIME_ZONE_FORMATTER.withChronology(getChronology(timeZoneKey)).parseMillis(value);
}
public static String printTimestampWithTimeZone(long timestampWithTimeZone)
{
ISOChronology chronology = unpackChronology(timestampWithTimeZone);
long millis = unpackMillisUtc(timestampWithTimeZone);
return TIMESTAMP_WITH_TIME_ZONE_FORMATTER.withChronology(chronology).print(millis);
}
public static String printTimestampWithoutTimeZone(long timestamp)
{
return TIMESTAMP_WITHOUT_TIME_ZONE_FORMATTER.print(timestamp);
}
@Deprecated
public static String printTimestampWithoutTimeZone(TimeZoneKey timeZoneKey, long timestamp)
{
return LEGACY_TIMESTAMP_WITHOUT_TIME_ZONE_FORMATTER.withChronology(getChronology(timeZoneKey)).print(timestamp);
}
public static boolean timestampHasTimeZone(String value)
{
try {
try {
TIMESTAMP_WITH_TIME_ZONE_FORMATTER.parseMillis(value);
return true;
}
catch (RuntimeException e) {
// `.withZoneUTC()` makes `timestampHasTimeZone` return value independent of JVM zone
TIMESTAMP_WITHOUT_TIME_ZONE_FORMATTER.withZoneUTC().parseMillis(value);
return false;
}
}
catch (RuntimeException e) {
throw new IllegalArgumentException(format("Invalid timestamp '%s'", value));
}
}
private static final DateTimeFormatter TIME_FORMATTER;
private static final DateTimeFormatter TIME_WITH_TIME_ZONE_FORMATTER;
static {
DateTimeParser[] timeWithoutTimeZoneParser = {
DateTimeFormat.forPattern("H:m").getParser(),
DateTimeFormat.forPattern("H:m:s").getParser(),
DateTimeFormat.forPattern("H:m:s.SSS").getParser()};
DateTimePrinter timeWithoutTimeZonePrinter = DateTimeFormat.forPattern("HH:mm:ss.SSS").getPrinter();
TIME_FORMATTER = new DateTimeFormatterBuilder().append(timeWithoutTimeZonePrinter, timeWithoutTimeZoneParser).toFormatter().withZoneUTC();
DateTimeParser[] timeWithTimeZoneParser = {
DateTimeFormat.forPattern("H:mZ").getParser(),
DateTimeFormat.forPattern("H:m Z").getParser(),
DateTimeFormat.forPattern("H:m:sZ").getParser(),
DateTimeFormat.forPattern("H:m:s Z").getParser(),
DateTimeFormat.forPattern("H:m:s.SSSZ").getParser(),
DateTimeFormat.forPattern("H:m:s.SSS Z").getParser(),
DateTimeFormat.forPattern("H:mZZZ").getParser(),
DateTimeFormat.forPattern("H:m ZZZ").getParser(),
DateTimeFormat.forPattern("H:m:sZZZ").getParser(),
DateTimeFormat.forPattern("H:m:s ZZZ").getParser(),
DateTimeFormat.forPattern("H:m:s.SSSZZZ").getParser(),
DateTimeFormat.forPattern("H:m:s.SSS ZZZ").getParser()};
DateTimePrinter timeWithTimeZonePrinter = DateTimeFormat.forPattern("HH:mm:ss.SSS ZZZ").getPrinter();
TIME_WITH_TIME_ZONE_FORMATTER = new DateTimeFormatterBuilder().append(timeWithTimeZonePrinter, timeWithTimeZoneParser).toFormatter().withOffsetParsed();
}
/**
* Parse a string (optionally containing a zone) as a value of either TIME or TIME WITH TIME ZONE type.
* <p>
* For example: {@code "01:23:00"} is parsed to TIME {@code 01:23:00}
* and {@code "01:23:00 +01:23"} is parsed to TIME WITH TIME ZONE
* {@code 01:23:00+01:23}.
*
* @return stack representation of TIME or TIME WITH TIME ZONE type, depending on input
*/
public static long parseTimeLiteral(String value)
{
try {
return parseTimeWithTimeZone(value);
}
catch (Exception e) {
return parseTimeWithoutTimeZone(value);
}
}
/**
* Parse a string (optionally containing a zone) as a value of either TIME or TIME WITH TIME ZONE type.
* If the string doesn't specify a zone, it is interpreted in {@code timeZoneKey} zone.
*
* @return stack representation of legacy TIME or TIME WITH TIME ZONE type, depending on input
*/
@Deprecated
public static long parseTimeLiteral(TimeZoneKey timeZoneKey, String value)
{
try {
return parseTimeWithTimeZone(value);
}
catch (Exception e) {
return parseTimeWithoutTimeZone(timeZoneKey, value);
}
}
/**
* Parse a string containing a zone as a value of TIME WITH TIME ZONE type.
* <p>
* For example: {@code "01:23:00 +01:23"} is parsed to TIME WITH TIME ZONE
* {@code 01:23:00+01:23} and {@code "01:23:00"} is rejected.
*
* @return stack representation of TIME WITH TIME ZONE type
*/
public static long parseTimeWithTimeZone(String timeWithTimeZone)
{
DateTime dateTime = TIME_WITH_TIME_ZONE_FORMATTER.parseDateTime(timeWithTimeZone);
return packDateTimeWithZone(dateTime);
}
/**
* Parse a string (without a zone) as a value of TIME type.
* <p>
* For example: {@code "01:23:00"} is parsed to TIME {@code 01:23:00}
* and {@code "01:23:00 +01:23"} is rejected.
*
* @return stack representation of TIME type
*/
public static long parseTimeWithoutTimeZone(String value)
{
return TIME_FORMATTER.parseMillis(value);
}
/**
* Parse a string (without a zone) as a value of TIME type, interpreted in {@code timeZoneKey} zone.
*
* @return stack representation of legacy TIME type
*/
@Deprecated
public static long parseTimeWithoutTimeZone(TimeZoneKey timeZoneKey, String value)
{
return TIME_FORMATTER.withZone(getDateTimeZone(timeZoneKey)).parseMillis(value);
}
public static String printTimeWithTimeZone(long timeWithTimeZone)
{
DateTimeZone timeZone = unpackDateTimeZone(timeWithTimeZone);
long millis = unpackMillisUtc(timeWithTimeZone);
return TIME_WITH_TIME_ZONE_FORMATTER.withZone(timeZone).print(millis);
}
public static String printTimeWithoutTimeZone(long value)
{
return TIME_FORMATTER.print(value);
}
@Deprecated
public static String printTimeWithoutTimeZone(TimeZoneKey timeZoneKey, long value)
{
return TIME_FORMATTER.withZone(getDateTimeZone(timeZoneKey)).print(value);
}
public static boolean timeHasTimeZone(String value)
{
try {
try {
parseTimeWithTimeZone(value);
return true;
}
catch (RuntimeException e) {
parseTimeWithoutTimeZone(value);
return false;
}
}
catch (RuntimeException e) {
throw new IllegalArgumentException(format("Invalid time '%s'", value));
}
}
private static final int YEAR_FIELD = 0;
private static final int MONTH_FIELD = 1;
private static final int DAY_FIELD = 3;
private static final int HOUR_FIELD = 4;
private static final int MINUTE_FIELD = 5;
private static final int SECOND_FIELD = 6;
private static final int MILLIS_FIELD = 7;
private static final PeriodFormatter INTERVAL_DAY_SECOND_FORMATTER = cretePeriodFormatter(IntervalField.DAY, IntervalField.SECOND);
private static final PeriodFormatter INTERVAL_DAY_MINUTE_FORMATTER = cretePeriodFormatter(IntervalField.DAY, IntervalField.MINUTE);
private static final PeriodFormatter INTERVAL_DAY_HOUR_FORMATTER = cretePeriodFormatter(IntervalField.DAY, IntervalField.HOUR);
private static final PeriodFormatter INTERVAL_DAY_FORMATTER = cretePeriodFormatter(IntervalField.DAY, IntervalField.DAY);
private static final PeriodFormatter INTERVAL_HOUR_SECOND_FORMATTER = cretePeriodFormatter(IntervalField.HOUR, IntervalField.SECOND);
private static final PeriodFormatter INTERVAL_HOUR_MINUTE_FORMATTER = cretePeriodFormatter(IntervalField.HOUR, IntervalField.MINUTE);
private static final PeriodFormatter INTERVAL_HOUR_FORMATTER = cretePeriodFormatter(IntervalField.HOUR, IntervalField.HOUR);
private static final PeriodFormatter INTERVAL_MINUTE_SECOND_FORMATTER = cretePeriodFormatter(IntervalField.MINUTE, IntervalField.SECOND);
private static final PeriodFormatter INTERVAL_MINUTE_FORMATTER = cretePeriodFormatter(IntervalField.MINUTE, IntervalField.MINUTE);
private static final PeriodFormatter INTERVAL_SECOND_FORMATTER = cretePeriodFormatter(IntervalField.SECOND, IntervalField.SECOND);
private static final PeriodFormatter INTERVAL_YEAR_MONTH_FORMATTER = cretePeriodFormatter(IntervalField.YEAR, IntervalField.MONTH);
private static final PeriodFormatter INTERVAL_YEAR_FORMATTER = cretePeriodFormatter(IntervalField.YEAR, IntervalField.YEAR);
private static final PeriodFormatter INTERVAL_MONTH_FORMATTER = cretePeriodFormatter(IntervalField.MONTH, IntervalField.MONTH);
public static long parseDayTimeInterval(String value, IntervalField startField, Optional<IntervalField> endField)
{
IntervalField end = endField.orElse(startField);
if (startField == IntervalField.DAY && end == IntervalField.SECOND) {
return parsePeriodMillis(INTERVAL_DAY_SECOND_FORMATTER, value, startField, end);
}
if (startField == IntervalField.DAY && end == IntervalField.MINUTE) {
return parsePeriodMillis(INTERVAL_DAY_MINUTE_FORMATTER, value, startField, end);
}
if (startField == IntervalField.DAY && end == IntervalField.HOUR) {
return parsePeriodMillis(INTERVAL_DAY_HOUR_FORMATTER, value, startField, end);
}
if (startField == IntervalField.DAY && end == IntervalField.DAY) {
return parsePeriodMillis(INTERVAL_DAY_FORMATTER, value, startField, end);
}
if (startField == IntervalField.HOUR && end == IntervalField.SECOND) {
return parsePeriodMillis(INTERVAL_HOUR_SECOND_FORMATTER, value, startField, end);
}
if (startField == IntervalField.HOUR && end == IntervalField.MINUTE) {
return parsePeriodMillis(INTERVAL_HOUR_MINUTE_FORMATTER, value, startField, end);
}
if (startField == IntervalField.HOUR && end == IntervalField.HOUR) {
return parsePeriodMillis(INTERVAL_HOUR_FORMATTER, value, startField, end);
}
if (startField == IntervalField.MINUTE && end == IntervalField.SECOND) {
return parsePeriodMillis(INTERVAL_MINUTE_SECOND_FORMATTER, value, startField, end);
}
if (startField == IntervalField.MINUTE && end == IntervalField.MINUTE) {
return parsePeriodMillis(INTERVAL_MINUTE_FORMATTER, value, startField, end);
}
if (startField == IntervalField.SECOND && end == IntervalField.SECOND) {
return parsePeriodMillis(INTERVAL_SECOND_FORMATTER, value, startField, end);
}
throw new IllegalArgumentException("Invalid day second interval qualifier: " + startField + " to " + end);
}
public static long parsePeriodMillis(PeriodFormatter periodFormatter, String value, IntervalField startField, IntervalField endField)
{
try {
Period period = parsePeriod(periodFormatter, value);
return IntervalDayTime.toMillis(
period.getValue(DAY_FIELD),
period.getValue(HOUR_FIELD),
period.getValue(MINUTE_FIELD),
period.getValue(SECOND_FIELD),
period.getValue(MILLIS_FIELD));
}
catch (IllegalArgumentException e) {
throw invalidInterval(e, value, startField, endField);
}
}
public static long parseYearMonthInterval(String value, IntervalField startField, Optional<IntervalField> endField)
{
IntervalField end = endField.orElse(startField);
if (startField == IntervalField.YEAR && end == IntervalField.MONTH) {
PeriodFormatter periodFormatter = INTERVAL_YEAR_MONTH_FORMATTER;
return parsePeriodMonths(value, periodFormatter, startField, end);
}
if (startField == IntervalField.YEAR && end == IntervalField.YEAR) {
return parsePeriodMonths(value, INTERVAL_YEAR_FORMATTER, startField, end);
}
if (startField == IntervalField.MONTH && end == IntervalField.MONTH) {
return parsePeriodMonths(value, INTERVAL_MONTH_FORMATTER, startField, end);
}
throw new IllegalArgumentException("Invalid year month interval qualifier: " + startField + " to " + end);
}
private static long parsePeriodMonths(String value, PeriodFormatter periodFormatter, IntervalField startField, IntervalField endField)
{
try {
Period period = parsePeriod(periodFormatter, value);
return IntervalYearMonth.toMonths(
period.getValue(YEAR_FIELD),
period.getValue(MONTH_FIELD));
}
catch (IllegalArgumentException e) {
throw invalidInterval(e, value, startField, endField);
}
}
private static Period parsePeriod(PeriodFormatter periodFormatter, String value)
{
boolean negative = value.startsWith("-");
if (negative) {
value = value.substring(1);
}
Period period = periodFormatter.parsePeriod(value);
for (DurationFieldType type : period.getFieldTypes()) {
checkArgument(period.get(type) >= 0, "Period field %s is negative", type);
}
if (negative) {
period = period.negated();
}
return period;
}
private static PrestoException invalidInterval(Throwable throwable, String value, IntervalField startField, IntervalField endField)
{
String message;
if (startField == endField) {
message = format("Invalid INTERVAL %s value: %s", startField, value);
}
else {
message = format("Invalid INTERVAL %s TO %s value: %s", startField, endField, value);
}
return new PrestoException(INVALID_FUNCTION_ARGUMENT, message, throwable);
}
private static PeriodFormatter cretePeriodFormatter(IntervalField startField, IntervalField endField)
{
if (endField == null) {
endField = startField;
}
List<PeriodParser> parsers = new ArrayList<>();
PeriodFormatterBuilder builder = new PeriodFormatterBuilder();
switch (startField) {
case YEAR:
builder.appendYears();
parsers.add(builder.toParser());
if (endField == IntervalField.YEAR) {
break;
}
builder.appendLiteral("-");
// fall through
case MONTH:
builder.appendMonths();
parsers.add(builder.toParser());
if (endField != IntervalField.MONTH) {
throw new IllegalArgumentException("Invalid interval qualifier: " + startField + " to " + endField);
}
break;
case DAY:
builder.appendDays();
parsers.add(builder.toParser());
if (endField == IntervalField.DAY) {
break;
}
builder.appendLiteral(" ");
// fall through
case HOUR:
builder.appendHours();
parsers.add(builder.toParser());
if (endField == IntervalField.HOUR) {
break;
}
builder.appendLiteral(":");
// fall through
case MINUTE:
builder.appendMinutes();
parsers.add(builder.toParser());
if (endField == IntervalField.MINUTE) {
break;
}
builder.appendLiteral(":");
// fall through
case SECOND:
builder.appendSecondsWithOptionalMillis();
parsers.add(builder.toParser());
break;
}
return new PeriodFormatter(builder.toPrinter(), new OrderedPeriodParser(parsers));
}
private static class OrderedPeriodParser
implements PeriodParser
{
private final List<PeriodParser> parsers;
private OrderedPeriodParser(List<PeriodParser> parsers)
{
this.parsers = parsers;
}
@Override
public int parseInto(ReadWritablePeriod period, String text, int position, Locale locale)
{
int bestValidPos = position;
ReadWritablePeriod bestValidPeriod = null;
int bestInvalidPos = position;
for (PeriodParser parser : parsers) {
ReadWritablePeriod parsedPeriod = new MutablePeriod();
int parsePos = parser.parseInto(parsedPeriod, text, position, locale);
if (parsePos >= position) {
if (parsePos > bestValidPos) {
bestValidPos = parsePos;
bestValidPeriod = parsedPeriod;
if (parsePos >= text.length()) {
break;
}
}
}
else if (parsePos < 0) {
parsePos = ~parsePos;
if (parsePos > bestInvalidPos) {
bestInvalidPos = parsePos;
}
}
}
if (bestValidPos > position || (bestValidPos == position)) {
// Restore the state to the best valid parse.
if (bestValidPeriod != null) {
period.setPeriod(bestValidPeriod);
}
return bestValidPos;
}
return ~bestInvalidPos;
}
}
}