Examples of javax.cache.expiry.Duration

javax.cache.expiry.Duration
A {@link java.io.Serializable} duration of time. @author Yannis Cosmadopoulos @author Greg Luck @author Brian Oliver @since 1.0 @see ExpiryPolicy

     * @param createMillis
     * @param accessMillis
     * @param updateMillis
     */
    public HazelcastExpiryPolicy(long createMillis, long accessMillis, long updateMillis) {
        this(new Duration(TimeUnit.MILLISECONDS, createMillis), new Duration(TimeUnit.MILLISECONDS, accessMillis),
                new Duration(TimeUnit.MILLISECONDS, updateMillis));
    }

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     * @param updateDurationAmount
     * @param timeUnit
     */
    public HazelcastExpiryPolicy(long createDurationAmount, long accessDurationAmount, long updateDurationAmount,
                                 TimeUnit timeUnit) {
        this(new Duration(timeUnit, createDurationAmount), new Duration(timeUnit, accessDurationAmount),
                new Duration(timeUnit, updateDurationAmount));
    }

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    private Duration readDuration(ObjectDataInput in)
            throws IOException {
        long da = in.readLong();
        if (da > -1) {
            TimeUnit tu = TimeUnit.values()[in.readInt()];
            return new Duration(tu, da);
        }
        return null;
    }

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    protected long updateAccessDuration(CacheRecord record, ExpiryPolicy expiryPolicy,
                                        long now) {
        long expiryTime = -1L;
        try {
            Duration expiryDuration = expiryPolicy.getExpiryForAccess();
            if (expiryDuration != null) {
                expiryTime = expiryDuration.getAdjustedTime(now);
                record.setExpirationTime(expiryTime);
            }
        } catch (Exception e) {
            EmptyStatement.ignore(e);
            //leave the expiry time untouched when we can't determine a duration

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    protected long expiryPolicyToTTL(ExpiryPolicy expiryPolicy) {
        if (expiryPolicy == null) {
            return -1;
        }
        try {
            Duration expiryDuration = expiryPolicy.getExpiryForCreation();
            if (expiryDuration == null || expiryDuration.isEternal()) {
                return -1;
            }
            long durationAmount = expiryDuration.getDurationAmount();
            TimeUnit durationTimeUnit = expiryDuration.getTimeUnit();
            return TimeUnit.MILLISECONDS.convert(durationAmount, durationTimeUnit);
        } catch (Exception e) {
            return -1;
        }
    }

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        }
    }


    protected ExpiryPolicy ttlToExpirePolicy(long ttl) {
        if (ttl >= 0) {
            return new ModifiedExpiryPolicy(new Duration(TimeUnit.MILLISECONDS, ttl));
        } else {
            return new CreatedExpiryPolicy(Duration.ETERNAL);
        }
    }

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    public R createRecordWithExpiry(Data key, Object value, ExpiryPolicy expiryPolicy,
                                    long now, boolean disableWriteThrough) {
        expiryPolicy = getExpiryPolicy(expiryPolicy);


        Duration expiryDuration;
        try {
            expiryDuration = expiryPolicy.getExpiryForCreation();
        } catch (Exception e) {
            expiryDuration = Duration.ETERNAL;
        }
        long expiryTime = expiryDuration.getAdjustedTime(now);


        if (!disableWriteThrough) {
            writeThroughCache(key, value);
        }

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                                          boolean disableWriteThrough) {
        expiryPolicy = getExpiryPolicy(expiryPolicy);


        long expiryTime = -1L;
        try {
            Duration expiryDuration = expiryPolicy.getExpiryForUpdate();
            if (expiryDuration != null) {
                expiryTime = expiryDuration.getAdjustedTime(now);
                record.setExpirationTime(expiryTime);
            }
        } catch (Exception e) {
            EmptyStatement.ignore(e);
            //leave the expiry time untouched when we can't determine a duration

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    public R readThroughRecord(Data key, long now) {
        Object value = readThroughCache(key);
        if (value == null) {
            return null;
        }
        Duration expiryDuration;
        try {
            expiryDuration = defaultExpiryPolicy.getExpiryForCreation();
        } catch (Exception e) {
            expiryDuration = Duration.ETERNAL;
        }
        long expiryTime = expiryDuration.getAdjustedTime(now);


        if (isExpiredAt(expiryTime, now)) {
            return null;
        }
        //TODO below createRecord may fire create event, is it OK?

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    private Element getElement(final K key) {
        final Element element = ehcache.get(key);
        if (element == null)
            return null;
        final Duration expiryForUpdate = cfg.getExpiryPolicy().getExpiryForAccess();
        if(expiryForUpdate != null && expiryForUpdate.isZero()) {
            ehcache.removeElement(element);
        }
        return element;
    }

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