EdgeEvent Class
Defines methods and properties that allow adapters and user-defined operators to create and access edge events.
Inheritance Hierarchy
System.Object
Microsoft.ComplexEventProcessing.EventInstance
Microsoft.ComplexEventProcessing.UntypedEvent
Microsoft.ComplexEventProcessing.EdgeEvent
Namespace: Microsoft.ComplexEventProcessing
Assembly: Microsoft.ComplexEventProcessing (in Microsoft.ComplexEventProcessing.dll)
Syntax
public sealed class EdgeEvent : UntypedEvent
The EdgeEvent type exposes the following members.
Properties
| Name | Description | |
|---|---|---|
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EdgeType | Gets the edge type. |
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EndTime | Gets or sets the end time of the event. This value is ignored if this is a Start edge event. |
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EventKind | Gets the event kind for the event. (Overrides UntypedEvent.EventKind.) |
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StartTime | Gets or sets the valid start time of the event. |
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Methods
| Name | Description | |
|---|---|---|
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CreateCti<TPayload> | Creates a CTI in a stream of edge events. |
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CreateEnd<TPayload> | Creates an edge end event with the specified payload. |
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CreateStart<TPayload> | Creates an edge start event with the specified payload. |
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Equals | (Inherited from Object.) |
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Finalize | (Inherited from Object.) |
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GetField<T>(Int32) | Gets a field value by its ordinal. (Inherited from UntypedEvent.) |
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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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SetField(Int32, Object) | Sets the value of the specified field, regardless of its type. (Inherited from UntypedEvent.) |
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SetField<T>(Int32, T) | Sets the field value specified by its ordinal. (Inherited from UntypedEvent.) |
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ToString | (Inherited from Object.) |
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Remarks
An edge event represents either the start or end of a CEP event. 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.
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 the payload. For more information, see StreamInsight Server Concepts.
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.