Java Duration.isZero方法代碼示例

import java.time.Duration; //導入方法依賴的package包/類
public String format(Duration object) {
    if (object.isZero()) {
        return "0";
    }
    if (Duration.ofDays(object.toDays()).equals(object)) {
        return object.toDays() + "d";
    }
    if (Duration.ofHours(object.toHours()).equals(object)) {
        return object.toHours() + "h";
    }
    if (Duration.ofMinutes(object.toMinutes()).equals(object)) {
        return object.toMinutes() + "m";
    }
    if (Duration.ofSeconds(object.getSeconds()).equals(object)) {
        return object.getSeconds() + "s";
    }
    if (Duration.ofMillis(object.toMillis()).equals(object)) {
        return object.toMillis() + "ms";
    }
    return object.toNanos() + "ns";
}
 

import java.time.Duration; //導入方法依賴的package包/類
/**
 * Splits the time series into sub-series lasting sliceDuration.<br>
 * The current time series is splitted every splitDuration.<br>
 * The last sub-series may last less than sliceDuration.
 * @param series the time series to split
 * @param splitDuration the duration between 2 splits
 * @param sliceDuration the duration of each sub-series
 * @return a list of sub-series
 */
public static List<TimeSeries> splitSeries(TimeSeries series, Duration splitDuration, Duration sliceDuration) {
    ArrayList<TimeSeries> subseries = new ArrayList<>();
    if (splitDuration != null && !splitDuration.isZero()
            && sliceDuration != null && !sliceDuration.isZero()) {

        List<Integer> beginIndexes = getSplitBeginIndexes(series, splitDuration);
        for (Integer subseriesBegin : beginIndexes) {
            subseries.add(subseries(series, subseriesBegin, sliceDuration));
        }
    }
    return subseries;
}
 

import java.time.Duration; //導入方法依賴的package包/類
void checkIfBackoffDelayNeeded() {
    Duration delay = backoffStrategy.getDelayTime(failureAverage.getAverage());
    if (!delay.isZero() && !delay.isNegative()) {
        backoffEndTime = Clock.systemUTC().instant().plus(delay);
        manager.scheduleTask(new UpdateTimerTask(), delay);
    }
}
 

import java.time.Duration; //導入方法依賴的package包/類
/**
 * Asserts that the given duration is positive (non-negative and non-zero).
 *
 * @param duration Number to validate
 * @param fieldName Field name to display in exception message if not positive.
 * @return Duration if positive.
 */
public static Duration isPositive(Duration duration, String fieldName) {
    if (duration == null) {
        throw new IllegalArgumentException(String.format("%s cannot be null", fieldName));
    }

    if (duration.isNegative() || duration.isZero()) {
        throw new IllegalArgumentException(String.format("%s must be positive", fieldName));
    }
    return duration;
}
 

import java.time.Duration; //導入方法依賴的package包/類
/**
 * Asserts that the given duration is positive (non-negative and non-zero).
 *
 * @param duration Number to validate
 * @param fieldName Field name to display in exception message if not positive.
 * @return Duration if positive.
 */
public static Duration assertIsPositive(Duration duration, String fieldName) {
    assertNotNull(duration, fieldName);
    if (duration.isNegative() || duration.isZero()) {
        throw new IllegalArgumentException(String.format("%s must be positive", fieldName));
    }
    return duration;
}
 

import java.time.Duration; //導入方法依賴的package包/類
@Override
public void validate(Duration value, @Nullable Node node) throws InvalidXMLException {
    if(value.isZero()) {
        throw new InvalidXMLException("Time cannot be zero", node);
    }
}
 

import java.time.Duration; //導入方法依賴的package包/類
@VisibleForTesting
BigDecimal calculateConfidence(Instant time, Instant now) {

    Duration duration = Duration.between(time, now);

    if (duration.isZero() || duration.isNegative()) {
        return ONE;
    }

    // Number from 0 to 29 (= 100 years)
    double scaled = Math.log(duration.toMillis());

    // Number from 0.00 to 0.79
    double multiplied = scaled * Math.E / 100;

    // Number from 100.00 to 0.21
    double confidence = 1 - multiplied;

    // Sanitize in case if +3000 years...
    return BigDecimal.valueOf(confidence).max(ZERO).setScale(SCALE, HALF_UP);

}
 

import java.time.Duration; //導入方法依賴的package包/類
LongRunningMessageHandler(@NonNull ScheduledExecutorService timeoutExtensionExecutor,
        int maxNumberOfMessages, int numberOfThreads,
        @NonNull MessageHandlingRunnableFactory messageHandlingRunnableFactory,
        @NonNull VisibilityTimeoutExtenderFactory timeoutExtenderFactory,
        @NonNull MessageWorkerWithHeaders<I, O> worker, @NonNull Queue queue,
        @NonNull FinishedMessageCallback<I, O> finishedMessageCallback,
        @NonNull Duration timeUntilVisibilityTimeoutExtension,
        @NonNull Duration awaitShutDown) {
    if (timeUntilVisibilityTimeoutExtension.isZero() || timeUntilVisibilityTimeoutExtension
            .isNegative()) {
        throw new IllegalArgumentException("the timeout has to be > 0");
    }
    this.timeoutExtensionExecutor = timeoutExtensionExecutor;
    this.messageHandlingRunnableFactory = messageHandlingRunnableFactory;
    this.timeoutExtenderFactory = timeoutExtenderFactory;
    this.worker = worker;
    this.queue = queue;
    this.finishedMessageCallback = finishedMessageCallback;
    this.timeUntilVisibilityTimeoutExtension = timeUntilVisibilityTimeoutExtension;

    messageProcessingExecutor = new ThreadPoolTaskExecutor();
    messageProcessingExecutor.setMaxPoolSize(numberOfThreads);
    messageProcessingExecutor.setCorePoolSize(numberOfThreads);
    /*
     * Since we only accept new messages if one slot in the messagesInProcessing-Set
     * / executor is free we can schedule at least one message for instant execution
     * while (maxNumberOfMessages - 1) will be put into the queue
     */
    messageProcessingExecutor.setQueueCapacity(maxNumberOfMessages - 1);
    messageProcessingExecutor.setAwaitTerminationSeconds((int) awaitShutDown.getSeconds());
    if (awaitShutDown.getSeconds() > 0) {
        Runtime.getRuntime().addShutdownHook(new Thread(messageProcessingExecutor::shutdown));
    }
    messageProcessingExecutor.afterPropertiesSet();

    messagesInProcessing = new SetWithUpperBound<>(numberOfThreads);

    if (queue.getDefaultVisibilityTimeout().minusSeconds(5).compareTo(
            timeUntilVisibilityTimeoutExtension) < 0) {
        throw new IllegalStateException("The extension interval of "
                + timeUntilVisibilityTimeoutExtension.getSeconds()
                + " is too close to the VisibilityTimeout of " + queue
                        .getDefaultVisibilityTimeout().getSeconds()
                + " seconds of the queue, has to be at least 5 seconds less.");
    }
}