diff options
Diffstat (limited to 'java/util/src/main/java/com/google/protobuf/util/Timestamps.java')
| -rw-r--r-- | java/util/src/main/java/com/google/protobuf/util/Timestamps.java | 45 |
1 files changed, 31 insertions, 14 deletions
diff --git a/java/util/src/main/java/com/google/protobuf/util/Timestamps.java b/java/util/src/main/java/com/google/protobuf/util/Timestamps.java index 2160e4d5..9e528d4a 100644 --- a/java/util/src/main/java/com/google/protobuf/util/Timestamps.java +++ b/java/util/src/main/java/com/google/protobuf/util/Timestamps.java @@ -30,7 +30,6 @@ package com.google.protobuf.util; -import static com.google.common.base.Preconditions.checkArgument; import static com.google.common.math.IntMath.checkedAdd; import static com.google.common.math.IntMath.checkedSubtract; import static com.google.common.math.LongMath.checkedAdd; @@ -44,6 +43,7 @@ import java.text.SimpleDateFormat; import java.util.Comparator; import java.util.Date; import java.util.GregorianCalendar; +import java.util.Locale; import java.util.TimeZone; /** @@ -74,6 +74,11 @@ public final class Timestamps { public static final Timestamp MAX_VALUE = Timestamp.newBuilder().setSeconds(TIMESTAMP_SECONDS_MAX).setNanos(999999999).build(); + /** + * A constant holding the {@link Timestamp} of epoch time, {@code 1970-01-01T00:00:00.000000000Z}. + */ + public static final Timestamp EPOCH = Timestamp.newBuilder().setSeconds(0).setNanos(0).build(); + private static final ThreadLocal<SimpleDateFormat> timestampFormat = new ThreadLocal<SimpleDateFormat>() { @Override @@ -83,7 +88,7 @@ public final class Timestamps { }; private static SimpleDateFormat createTimestampFormat() { - SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss"); + SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss", Locale.ENGLISH); GregorianCalendar calendar = new GregorianCalendar(TimeZone.getTimeZone("UTC")); // We use Proleptic Gregorian Calendar (i.e., Gregorian calendar extends // backwards to year one) for timestamp formating. @@ -114,6 +119,17 @@ public final class Timestamps { } /** + * Compares two timestamps. The value returned is identical to what would be returned by: + * {@code Timestamps.comparator().compare(x, y)}. + * + * @return the value {@code 0} if {@code x == y}; a value less than {@code 0} if {@code x < y}; + * and a value greater than {@code 0} if {@code x > y} + */ + public static int compare(Timestamp x, Timestamp y) { + return COMPARATOR.compare(x, y); + } + + /** * Returns true if the given {@link Timestamp} is valid. The {@code seconds} value must be in the * range [-62,135,596,800, +253,402,300,799] (i.e., between 0001-01-01T00:00:00Z and * 9999-12-31T23:59:59Z). The {@code nanos} value must be in the range [0, +999,999,999]. @@ -148,13 +164,12 @@ public final class Timestamps { public static Timestamp checkValid(Timestamp timestamp) { long seconds = timestamp.getSeconds(); int nanos = timestamp.getNanos(); - checkArgument( - isValid(seconds, nanos), - "Timestamp is not valid. See proto definition for valid values. " + if (!isValid(seconds, nanos)) { + throw new IllegalArgumentException(String.format( + "Timestamp is not valid. See proto definition for valid values. " + "Seconds (%s) must be in range [-62,135,596,800, +253,402,300,799]. " - + "Nanos (%s) must be in range [0, +999,999,999].", - seconds, - nanos); + + "Nanos (%s) must be in range [0, +999,999,999].", seconds, nanos)); + } return timestamp; } @@ -296,7 +311,7 @@ public final class Timestamps { * Convert a Timestamp to the number of microseconds elapsed from the epoch. * * <p>The result will be rounded down to the nearest microsecond. E.g., if the timestamp - * represents "1969-12-31T23:59:59.999999999Z", it will be rounded to -1 millisecond. + * represents "1969-12-31T23:59:59.999999999Z", it will be rounded to -1 microsecond. */ public static long toMicros(Timestamp timestamp) { checkValid(timestamp); @@ -348,10 +363,12 @@ public final class Timestamps { static Timestamp normalizedTimestamp(long seconds, int nanos) { if (nanos <= -NANOS_PER_SECOND || nanos >= NANOS_PER_SECOND) { seconds = checkedAdd(seconds, nanos / NANOS_PER_SECOND); - nanos %= NANOS_PER_SECOND; + nanos = (int) (nanos % NANOS_PER_SECOND); } if (nanos < 0) { - nanos += NANOS_PER_SECOND; // no overflow since nanos is negative (and we're adding) + nanos = + (int) + (nanos + NANOS_PER_SECOND); // no overflow since nanos is negative (and we're adding) seconds = checkedSubtract(seconds, 1); } Timestamp timestamp = Timestamp.newBuilder().setSeconds(seconds).setNanos(nanos).build(); @@ -386,11 +403,11 @@ public final class Timestamps { static String formatNanos(int nanos) { // Determine whether to use 3, 6, or 9 digits for the nano part. if (nanos % NANOS_PER_MILLISECOND == 0) { - return String.format("%1$03d", nanos / NANOS_PER_MILLISECOND); + return String.format(Locale.ENGLISH, "%1$03d", nanos / NANOS_PER_MILLISECOND); } else if (nanos % NANOS_PER_MICROSECOND == 0) { - return String.format("%1$06d", nanos / NANOS_PER_MICROSECOND); + return String.format(Locale.ENGLISH, "%1$06d", nanos / NANOS_PER_MICROSECOND); } else { - return String.format("%1$09d", nanos); + return String.format(Locale.ENGLISH, "%1$09d", nanos); } } } |