Package com.illumon.iris.binarystore

Class DayAndHourExpiration

java.lang.Object

com.illumon.iris.binarystore.BaseExpiration<DayAndHourExpiration.DateAndHour>

com.illumon.iris.binarystore.DayAndHourExpiration

All Implemented Interfaces:

ExpirationManager<DayAndHourExpiration.DateAndHour>

@InternalUseOnly
public class DayAndHourExpiration
extends BaseExpiration<DayAndHourExpiration.DateAndHour>

Expires on the hour, returning a datetime format of "yyyy-MM-dd.HHmmss.SSSZ" after rolling on the hour. Acts as a high-watermark cache of BinaryLogFilename.localDateColumnPartition(ZonedDateTime) and BinaryLogFilename.trailingFormat(ZonedDateTime).

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	DayAndHourExpiration.DateAndHour	The value contained in this object contains both the date and the hour.

Nested classes/interfaces inherited from interface com.illumon.iris.binarystore.ExpirationManager

ExpirationManager.StaticExpiration<T>

Constructor Summary

Constructors

Constructor	Description
DayAndHourExpiration(ZoneId zoneId)	The current interval is determined by the current time rounded to the given rollIntervalMillis, and the current value will be expired when the interval changes.

Method Summary

Modifier and Type	Method	Description
protected DayAndHourExpiration.DateAndHour	doUpdate(long now)	Called by BaseExpiration.get(long) when the value is expired.
DayAndHourExpiration.DateAndHour	initialize(long now)	The value for the given time, assuming it is the first access.

Methods inherited from class com.illumon.iris.binarystore.BaseExpiration

get, isExpired, setValue

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

DayAndHourExpiration

public DayAndHourExpiration(ZoneId zoneId)

The current interval is determined by the current time rounded to the given rollIntervalMillis, and the current value will be expired when the interval changes. The value during the initial interval and after an initialize call will not be rounded.

Method Details

doUpdate

protected DayAndHourExpiration.DateAndHour doUpdate(long now)

Description copied from class: BaseExpiration

Called by BaseExpiration.get(long) when the value is expired. This method is expected to call BaseExpiration.setValue(long, Object)

Specified by:

doUpdate in class BaseExpiration<DayAndHourExpiration.DateAndHour>

Parameters:

now - the current time since the epoch in millis

Returns:

the new value

initialize

public DayAndHourExpiration.DateAndHour initialize(long now)

Description copied from interface: ExpirationManager

The value for the given time, assuming it is the first access. Certain implementations generate different values for the initialized time vs. after an expiration.

Parameters:

now - the result of System.currentTimeInMillis.

Returns:

the value corresponding to the given initialization time