Interface ITopic

The ITopic interface facilitates creating subscription and publishing of messages against the topic. This also provides event registrations for message delivery failure, receiving messages and deleting topics.

Namespace:

Assembly: Alachisoft.NCache.Runtime.dll

Syntax

public interface ITopic : IDisposable

Properties

Name	Description
ExpirationTime	Default Expiry time of messsage for this topic. Its default value is TimeSpan.MaxValue.
IsClosed	Is topic closed or not?
MessageCount	Number of messages published for this topic.
Name	Topic's name
OnTopicDeleted	Topic deletion events are delivered through this callback.
Priority	The relative priority of the topic.
SearchOptions	Returns whether user has subscribed to Pattern based or simple subscription

Methods

Name	Description
CreateDurableSubscription(String, SubscriptionPolicy, MessageReceivedCallback, Nullable<TimeSpan>, DeliveryMode)	Creates a Durable subscription
CreateSubscription(MessageReceivedCallback, DeliveryMode)	This method is used to register against topic on cache if topic exists, otherwise throw exception.
Publish(Message, DeliveryOption, Boolean)	This method is used to Publish the message in the cache with specified DeliveryOption. And the option to notify the publisher if the message has failed to deliver because of expiration, eviction or internal system issue.
Publish(Message, DeliveryOption, String, Boolean)	This method is used to Publish the message in the cache with specified DeliveryOption and SequenceName. Order of messages with same sequence name is retained. And the option to notify the publisher if the message has failed to deliver because of expiration, eviction or internal system issue.
PublishAsync(Message, DeliveryOption, Boolean)	This method is used to Publish a message asynchronously in the cache with specified DeliveryOption and the option to notify the publisher if the message has failed to deliver because of expiration, eviction or internal system issue.
PublishBulk(IEnumerable<Tuple<Message, DeliveryOption>>, Boolean)	This method is used to Publish messages in bulk in the cache with specified DeliveryOption. And the option to notify the publisher if the message has failed to deliver because of expiration, eviction or internal system issue.

Events

Name	Description
MessageDeliveryFailure	Subscribe for Message delivery failure events