org.occurrent.subscription

Class StartAt

java.lang.Object

org.occurrent.subscription.StartAt

Direct Known Subclasses:

StartAt.Default, StartAt.Dynamic, StartAt.Now, StartAt.StartAtSubscriptionPosition

public abstract class StartAt
extends java.lang.Object

Specifies in which position a subscription should start when subscribing to it

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	StartAt.Default
static class	StartAt.Dynamic
static class	StartAt.Now
static class	StartAt.StartAtSubscriptionPosition

Constructor Summary

Constructors

Constructor and Description
StartAt()

Method Summary

Modifier and Type	Method and Description
static StartAt	dynamic(java.util.function.Supplier<StartAt> supplier) Create a "dynamic" start at position that may change during the life-cycle of a subcription model.
abstract StartAt	get()
boolean	isDefault()
boolean	isNow()
static StartAt.Now	now() Start subscribing at this moment in time
static StartAt.Default	subscriptionModelDefault() Start subscribing to the subscription model default.
static StartAt	subscriptionPosition(SubscriptionPosition subscriptionPosition) Start subscribing to the subscription from the given subscription position

Methods inherited from class java.lang.Object

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

Constructor Detail

StartAt

public StartAt()

Method Detail

get

public abstract StartAt get()

isNow

public boolean isNow()

isDefault

public boolean isDefault()

now

public static StartAt.Now now()

Start subscribing at this moment in time

subscriptionModelDefault

public static StartAt.Default subscriptionModelDefault()

Start subscribing to the subscription model default. Typically this would be the same as "now", but subscription models may override this default behavior e.g. to start from the last stored position instead of now.

subscriptionPosition

public static StartAt subscriptionPosition(SubscriptionPosition subscriptionPosition)

Start subscribing to the subscription from the given subscription position

dynamic

public static StartAt dynamic(java.util.function.Supplier<StartAt> supplier)

Create a "dynamic" start at position that may change during the life-cycle of a subcription model. For example, it could return the latest subscription position from a subscription position storage.