org.joda.time.Instant.minus()方法的使用及代码示例

x33g5p2x  于2022-01-20 转载在 其他  
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本文整理了Java中org.joda.time.Instant.minus()方法的一些代码示例，展示了Instant.minus()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Instant.minus()方法的具体详情如下：
包路径：org.joda.time.Instant
类名称：Instant
方法名：minus

Instant.minus介绍

[英]Gets a copy of this instant with the specified duration taken away.

If the amount is zero or null, then this is returned.
[中]获取具有指定持续时间的此瞬间的副本。
如果金额为零或空，则返回this。

代码示例

代码示例来源：origin: org.apache.beam/beam-sdks-java-core

/** Returns the largest timestamp that can be included in this window. */
@Override
public Instant maxTimestamp() {
 // end not inclusive
 return end.minus(1);
}

代码示例来源：origin: org.apache.beam/beam-runners-core-java

@Override
public Instant apply(Instant point) {
 long millisSinceStart = new Duration(offset, point).getMillis() % size.getMillis();
 return millisSinceStart == 0 ? point : point.plus(size).minus(millisSinceStart);
}

代码示例来源：origin: GoogleCloudPlatform/DataflowTemplates

@VisibleForTesting
 Instant getWatermark(PartitionContext ctx, Instant now) {
  if (maxEventTimestamp.isAfter(now)) {
   return now.minus(maxDelay); // (a) above.
  } else if (ctx.getMessageBacklog() == 0
    && ctx.getBacklogCheckTime().minus(maxDelay).isAfter(maxEventTimestamp) // Idle
    && maxEventTimestamp.getMillis() > 0) { // Read at least one record with positive timestamp.
   return ctx.getBacklogCheckTime().minus(maxDelay);
  } else {
   return maxEventTimestamp.minus(maxDelay);
  }
 }
}

代码示例来源：origin: jbonofre/beam-samples

@ProcessElement
    public void processElement(ProcessContext c) {
      // Generate a timestamp that falls somewhere in the past RAND_RANGE hours.
      long randMillis = (long) (Math.random() * RAND_RANGE.getMillis());
//            Instant randomTimestamp = minTimestamp.plus(randMillis);
      Instant randomTimestamp = minTimestamp.minus(randMillis);
      // Concept #2: Set the data element with that timestamp.
      c.outputWithTimestamp(c.element(), new Instant(randomTimestamp));
    }
  }

代码示例来源：origin: org.apache.beam/beam-sdks-java-core

public Collection<IntervalWindow> assignWindows(Instant timestamp) {
 List<IntervalWindow> windows = new ArrayList<>((int) (size.getMillis() / period.getMillis()));
 long lastStart = lastStartFor(timestamp);
 for (long start = lastStart;
   start > timestamp.minus(size).getMillis();
   start -= period.getMillis()) {
  windows.add(new IntervalWindow(new Instant(start), size));
 }
 return windows;
}

代码示例来源：origin: org.apache.beam/beam-sdks-java-core

/** Return the last start of a sliding window that contains the timestamp. */
private long lastStartFor(Instant timestamp) {
 return timestamp.getMillis()
   - timestamp.plus(period).minus(offset).getMillis() % period.getMillis();
}

代码示例来源：origin: org.apache.beam/beam-sdks-java-core

@Override
 public IntervalWindow getSideInputWindow(BoundedWindow mainWindow) {
  if (mainWindow instanceof GlobalWindow) {
   throw new IllegalArgumentException(
     "Attempted to get side input window for GlobalWindow from non-global WindowFn");
  }
  long lastStart = lastStartFor(mainWindow.maxTimestamp().minus(size));
  return new IntervalWindow(new Instant(lastStart + period.getMillis()), size);
 }
};

代码示例来源：origin: GoogleCloudPlatform/DataflowTemplates

@Override
 public Instant getWatermark(PartitionContext context) {
  if (context.getMessageBacklog() == 0) {
   // The reader is caught up. May need to advance the watermark.
   Instant idleWatermark = context.getBacklogCheckTime().minus(IDLE_WATERMARK_DELTA);
   if (idleWatermark.isAfter(currentWatermark)) {
    currentWatermark = idleWatermark;
   }
  } // else, there is backlog (or is unknown). Do not advance the watermark.
  return currentWatermark;
 }
}

代码示例来源：origin: org.apache.beam/beam-sdks-java-core

@Override
public IntervalWindow decode(InputStream inStream) throws IOException, CoderException {
 Instant end = instantCoder.decode(inStream);
 ReadableDuration duration = durationCoder.decode(inStream);
 return new IntervalWindow(end.minus(duration), end);
}

代码示例来源：origin: org.apache.beam/beam-sdks-java-io-kafka

@Override
 public Instant getWatermark(PartitionContext context) {
  if (context.getMessageBacklog() == 0) {
   // The reader is caught up. May need to advance the watermark.
   Instant idleWatermark = context.getBacklogCheckTime().minus(IDLE_WATERMARK_DELTA);
   if (idleWatermark.isAfter(currentWatermark)) {
    currentWatermark = idleWatermark;
   }
  } // else, there is backlog (or is unknown). Do not advance the watermark.
  return currentWatermark;
 }
}

代码示例来源：origin: org.apache.beam/beam-sdks-java-io-kinesis

public Instant getCurrent(BooleanSupplier shardsUpToDate) {
 Instant now = Instant.now();
 Instant readMin = getMinReadTimestamp(now);
 if (readMin == null) {
  if (shardsUpToDate.getAsBoolean()) {
   updateLastWatermark(now.minus(SAMPLE_PERIOD), now);
  }
 } else if (shouldUpdate(now)) {
  updateLastWatermark(readMin, now);
 }
 return lastWatermark;
}

代码示例来源：origin: org.apache.beam/beam-sdks-java-io-kinesis

@Test
public void watermarkStartsAtSamplePeriodBehindNowIfShardsUpToDate() {
 assertThat(watermark.getCurrent(SHARDS_UP_TO_DATE))
   .isEqualTo(now.minus(KinesisWatermark.SAMPLE_PERIOD));
}

代码示例来源：origin: dataArtisans/flink-dataflow

protected void checkTimestamp(WindowedValue<IN> ref, Instant timestamp) {
  if (timestamp.isBefore(ref.getTimestamp().minus(doFn.getAllowedTimestampSkew()))) {
    throw new IllegalArgumentException(String.format(
        "Cannot output with timestamp %s. Output timestamps must be no earlier than the "
            + "timestamp of the current input (%s) minus the allowed skew (%s). See the "
            + "DoFn#getAllowedTimestmapSkew() Javadoc for details on changing the allowed skew.",
        timestamp, ref.getTimestamp(),
        PeriodFormat.getDefault().print(doFn.getAllowedTimestampSkew().toPeriod())));
  }
}

代码示例来源：origin: org.apache.beam/beam-sdks-java-io-kinesis

@Test
public void watermarkIsUpdatedToFirstRecordTimestamp() {
 Instant firstTimestamp = now.minus(Duration.standardHours(1));
 watermark.update(firstTimestamp);
 assertThat(watermark.getCurrent(SHARDS_IRRELEVANT)).isEqualTo(firstTimestamp);
}

代码示例来源：origin: org.apache.beam/beam-sdks-java-io-kinesis

@Test
public void watermarkDoesNotGoBackward() {
 watermark.update(now);
 for (int i = 0; i <= KinesisWatermark.MIN_MESSAGES * 2; ++i) {
  watermark.update(now.minus(Duration.millis(i)));
  assertThat(watermark.getCurrent(SHARDS_IRRELEVANT)).isEqualTo(now);
 }
}

代码示例来源：origin: org.apache.beam/beam-sdks-java-io-kinesis

@Test
public void watermarkIsUpdatedToRecentRecordTimestampIfItIsOlderThanUpdateThreshold() {
 Instant firstTimestamp = now.minus(Duration.standardHours(1));
 watermark.update(firstTimestamp);
 assertThat(watermark.getCurrent(SHARDS_IRRELEVANT)).isEqualTo(firstTimestamp);
 Instant timeAfterWatermarkUpdateThreshold =
   now.plus(KinesisWatermark.UPDATE_THRESHOLD.plus(Duration.millis(1)));
 setCurrentTimeTo(timeAfterWatermarkUpdateThreshold);
 Instant nextTimestamp = timeAfterWatermarkUpdateThreshold.plus(Duration.millis(1));
 watermark.update(nextTimestamp);
 assertThat(watermark.getCurrent(SHARDS_IRRELEVANT)).isEqualTo(nextTimestamp);
}

代码示例来源：origin: org.apache.beam/beam-sdks-java-core

/** Tests that the last hour of the universe in fact ends at the end of time. */
@Test
public void testEndOfTime() {
 Instant endOfGlobalWindow = GlobalWindow.INSTANCE.maxTimestamp();
 FixedWindows windowFn = FixedWindows.of(Duration.standardHours(1));
 IntervalWindow truncatedWindow = windowFn.assignWindow(endOfGlobalWindow.minus(1));
 assertThat(truncatedWindow.maxTimestamp(), equalTo(endOfGlobalWindow));
}

代码示例来源：origin: org.apache.beam/beam-sdks-java-core

@Test
public void testExplodeWindowsInOneWindowEquals() {
 Instant now = Instant.now();
 BoundedWindow window = new IntervalWindow(now.minus(1000L), now.plus(1000L));
 WindowedValue<String> value =
   WindowedValue.of("foo", now, window, PaneInfo.ON_TIME_AND_ONLY_FIRING);
 assertThat(Iterables.getOnlyElement(value.explodeWindows()), equalTo(value));
}

代码示例来源：origin: org.apache.beam/beam-sdks-java-core

@Test
public void testAdvanceWatermarkEqualToPositiveInfinityThrows() {
 Builder<Integer> stream =
   TestStream.create(VarIntCoder.of())
     .advanceWatermarkTo(BoundedWindow.TIMESTAMP_MAX_VALUE.minus(1L));
 thrown.expect(IllegalArgumentException.class);
 stream.advanceWatermarkTo(BoundedWindow.TIMESTAMP_MAX_VALUE);
}

代码示例来源：origin: org.apache.beam/beam-sdks-java-core

@Test
public void testElementAtPositiveInfinityThrows() {
 Builder<Integer> stream =
   TestStream.create(VarIntCoder.of())
     .addElements(TimestampedValue.of(-1, BoundedWindow.TIMESTAMP_MAX_VALUE.minus(1L)));
 thrown.expect(IllegalArgumentException.class);
 stream.addElements(TimestampedValue.of(1, BoundedWindow.TIMESTAMP_MAX_VALUE));
}

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