EdgeEvent<TPayload> Class
An edge event represents either the start or end of a CEP event.
Inheritance Hierarchy
System.Object
Microsoft.ComplexEventProcessing.EventInstance
Microsoft.ComplexEventProcessing.TypedEvent<TPayload>
Microsoft.ComplexEventProcessing.EdgeEvent<TPayload>
Namespace: Microsoft.ComplexEventProcessing
Assembly: Microsoft.ComplexEventProcessing (in Microsoft.ComplexEventProcessing.dll)
Syntax
public sealed class EdgeEvent<TPayload> : TypedEvent<TPayload>
Type Parameters
- TPayload
Type of the payload of the edge event.
The EdgeEvent<TPayload> type exposes the following members.
Properties
| Name | Description | |
|---|---|---|
.jpeg "Public property") |
EdgeType | Gets the edge type. |
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EndTime | Gets or sets the valid end time of the event. This value is ignored if this is a start edge event. |
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EventKind | Gets the kind of the event. (Inherited from TypedEvent<TPayload>.) |
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Payload | Gets or sets the payload of the event. (Inherited from TypedEvent<TPayload>.) |
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StartTime | Gets or sets the valid start time of the event. This value is ignored if this is an end edge event. |
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Methods
| Name | Description | |
|---|---|---|
.jpeg "Public method") .gif "Static member") |
CreateCti | Creates a CTI in a stream of edge events. |
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CreateEnd | Creates an edge end event with the specified payload. |
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CreateStart | Creates an edge start event with the specified payload. |
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Equals | (Inherited from Object.) |
.jpeg "Protected method") |
Finalize | (Inherited from Object.) |
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GetHashCode | (Inherited from Object.) |
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GetType | (Inherited from Object.) |
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MemberwiseClone | (Inherited from Object.) |
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ToString | (Inherited from Object.) |
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Remarks
As opposed to single interval events, which are fully specified in terms of their start and end time, edge events need to be given in pairs. An edge event of type Start indicates the beginning of the event lifetime, and a matching End event indicates the end of the event lifetime. For more information on edge events, see StreamInsight Server Concepts.
Edge events are typically used to model a discrete signal, where the arrival of the new signal value is not known in advance. Such a pattern entails the submission of an end event regarding the previous start event, followed by a start event for the new value. Note that the end event has to match the start time of the Start event as well as payload. For more information about creating event types, see [CreatingEventTypes]Creating Event Types.
Examples
EdgeEvent{TPayload} ev = CreateInsertEvent(EdgeType.Start);
ev.StartTime = DateTime.Now;
ev.Payload = ...
EnqueueOperationResult result = Enqueue(ref ev);
Thread Safety
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.