Name 

Description 

Classes 

The following table lists classes in this documentation. 

Interfaces 

The following table lists interfaces in this documentation. 

 

Name 

Description 

 

AccessException 

Thrown by the Notify* methods in IMetadataProvider if the supplied User is not recognized or a functionality is not implemented for this User.  

 

ConflictingSessionException 

Thrown by the NotifyNewSession method of IMetadataProvider if a User is not enabled to open a new Session but he would be enabled as soon as another Session were closed. By using this exception, the ID of the other Session is also supplied.
After receiving this exception, the Server may try to close the specified session and invoke NotifyNewSession again.
 

 

CreditsException 

Thrown by the Notify* methods in IMetadataProvider if some functionality cannot be allowed to the supplied User. This may occur if the user is not granted some resource or if the user would exceed the granted amount. Different kinds of problems can be distinguished by an error code. Both the error message detail and the error code will be forwarded by Lightstreamer Kernel to the Client.  

 

ItemsException 

Thrown by the GetItems and GetSchema methods in IMetadataProvider if the supplied Item Group name (or Item List specification) is not recognized or cannot be resolved.  

 

MetadataException 

Base class for all exceptions directly thrown by the Metadata Adapter.  

 

MetadataProviderAdapter 

Provides a default implementation of all the functionality of a Metadata Adapter which allow a simple default behavior. Overriding this class may facilitate the coding of simple Adapters.  

 

MetadataProviderException 

Thrown by the Init method in IMetadataProvider if there is some problem that prevents the correct behavior of the Metadata Adapter. If this exception occurs, Lightstreamer Kernel must give up the startup.  

 

Mode 

Encapsulates a publishing Mode. The different Modes handled by Lightstreamer Kernel can be uniquely identified by the static constants defined in this class. See the technical documents for a detailed description of Modes.  

 

MpnDeviceInfo 

Specifies a target device for Push Notifications, to be specified upon MPN-related methods. Note that the processing and the authorization of Push Notifications is per-device and per-app, where a physical device is uniquely identified by the platform type and a platform dependent device token. We refer to this combination as a MPN Device. Notification requests for different MPN Devices are handled independently.
Push Notifications are not supported in Moderato edition. 

 

MpnPlatformType 

Identifies a push notifications platform type. It is used by Lightstreamer to specify the platform associated with the notified client requests.
Some of the available constants may refer to platform types that are not supported yet; only constants for supported platforms will ever be received.
Push Notifications are not supported in Moderato edition. 

 

MpnSubscriptionInfo 

Abstract class used by Lightstreamer to provide value objects to method NotifyMpnSubscriptionActivation. The attributes of every Push Notification to be activated is provided as a MpnSubscriptionInfo subclass instance. See subclasses for platform specific details.
Push Notifications are not supported in Moderato edition. 

 

NotificationException 

Thrown by the Notify* methods in IMetadataProvider if there is some inconsistency in the supplied parameters. Lightstreamer Kernel ensures that such conditions will never occur, but they may be checked for debugging or documentation reasons.  

 

SchemaException 

Thrown by the GetSchema method in IMetadataProvider if the supplied Field Schema name (or Field List specification) is not recognized or cannot be resolved.  

 

TableInfo 

Used by IMetadataProvider to provide value objects to the calls to methods NotifyNewTables and NotifyTablesClose. The attributes of every Table (i.e.: Subscription) to be added or removed to a Session have to be written to a TableInfo instance.  

 

Name 

Description 

 

IMetadataProvider 

Provides an interface to be implemented by a Remote Metadata Adapter in order to attach a Metadata Provider to Lightstreamer. A single instance of a Remote Metadata Adapter is created by Lightstreamer through the launch of a Remote Server, based on configured class name and parameters. For this purpose, any Remote Metadata Adapter must provide a void constructor. Alternatively, an instance of a Remote Metadata Adapter is supplied to Lightstreamer programmatically through a MetadataProviderServer instance.
A Metadata Provider is used by Lightstreamer Kernel in combination with one or multiple Data Providers, uniquely associated with it; it is consulted in order... more