 |
Diffusion .NET Client Library
6.1.5
|
|
Diffusion .NET Client Library
6.1.5
|
Update factory for generic content-based updates. More...
Public Member Functions | |
| IUpdate | Update (IContent content) |
| Create a new update which updates the topic to the supplied state, comparing with the previous state and sending deltas of change to subscribers if appropriate. More... | |
| IUpdate | Replace (IContent content) |
| Create a new update which replaces the topic state and notifies all subscribers. More... | |
| IUpdate | Apply (IContent content) |
| Create a new update which applies the patch represented by the supplied content to the current topic state and notifies all subscribers of the change as appropriate. More... | |
Update factory for generic content-based updates.
This factory supports updates for a number of different topic types and it is important that the content supplied is compatible with the topic type and the topic schema (if applicable), otherwise the update will fail.
For Replace or Update the content supplied must always represent the full topic state.
For Apply the content must represent a specification of change to the topic state. This will be the patch representation acording to the topic type. This allows for the update content to only contain values for those fields/values that have actually changed rather than all values.
The server-side action is dependent upon the topic type as follows:
i.e. TopicType.SINGLE_VALUE, TopicType.RECORD, TopicType.SLAVE
If Update is used, the content supplied will be compared with the current topic state and changes applied accordingly. Subscribers will be notified only of changes to the topic (as TopicUpdateType.DELTA deltas) and if there are no changes then there would be no notifications.
If Replace(IContent) is used then the current topic state is totally replaced by the supplied content and all current subscribers will be notified of the new state (as TopicUpdateType.SNAPSHOT snapshots.
If Apply is used then the content supplied will be applied as a delta update to the current topic state. Subscribers will be notified only of the TopicUpdateType.DELTA delta.
i.e. TopicType.STATELESS
The supplied content will simply be relayed to all subscribed clients.
If Update(IContent) or Apply is used, subscribers will be notified that the content is a TopicUpdateType.DELTA delta.
If Replace(IContent) is used then subscribers will be notified that the content is a TopicUpdateType.SNAPSHOT snapshot.
An attempt to use this update type for any other topic type would result in an update failure at the server.
Instances of this factory can be obtained from the ITopicUpdateControl feature using ITopicUpdateControl.UpdateFactory{TF}, for example:
var updateControl = session.TopicUpdateControl; var factory = updateControl.UpdateFactory<IContentUpdateFactory>();
| IUpdate PushTechnology.ClientInterface.Client.Content.Update.IContentUpdateFactory.Apply | ( | IContent | content | ) |
Create a new update which applies the patch represented by the supplied content to the current topic state and notifies all subscribers of the change as appropriate.
| content | The content. |
| IUpdate PushTechnology.ClientInterface.Client.Content.Update.IContentUpdateFactory.Replace | ( | IContent | content | ) |
Create a new update which replaces the topic state and notifies all subscribers.
| content | The content. |
| IUpdate PushTechnology.ClientInterface.Client.Content.Update.IContentUpdateFactory.Update | ( | IContent | content | ) |
Create a new update which updates the topic to the supplied state, comparing with the previous state and sending deltas of change to subscribers if appropriate.
| content | The content. |
1.8.5 
