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CepStream.AlterEventDuration<TPayload> Method

Changes the duration of the input events. This method does not change the start time of an event.

Namespace:  Microsoft.ComplexEventProcessing.Linq
Assembly:  Microsoft.ComplexEventProcessing (in Microsoft.ComplexEventProcessing.dll)

Syntax

public static CepStream<TPayload> AlterEventDuration<TPayload>(
    this CepStream<TPayload> source,
    Expression<Func<CepEvent<TPayload>, TimeSpan>> eventDurationFunc
)

Type Parameters

  • TPayload
    Type of the input event payload.

Parameters

Return Value

Type: Microsoft.ComplexEventProcessing.Linq.CepStream<TPayload>
A stream with new event durations.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type CepStream<TPayload>. When you use instance method syntax to call this method, omit the first parameter. For more information, see https://msdn.microsoft.com/en-us/library/bb384936(v=sql.105) or https://msdn.microsoft.com/en-us/library/bb383977(v=sql.105).

Remarks

For more information see, Time Stamp Modifications.

Examples

The following example sets the event duration to 1 hour.

// set event duration to 1 hour.
var onehour = inputStream.AlterEventDuration(e => TimeSpan.FromHours(1));

The following example sets the event duration to twice its current lifetime.

// double event duration. 
var doubled = inputStream.AlterEventDuration(e => (e.EndTime - e.StartTime) * 2);

See Also

Reference

CepStream Class

Microsoft.ComplexEventProcessing.Linq Namespace