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CepStream.SnapshotWindow<TPayload> Method (CepStream<TPayload>, SnapshotWindowOutputPolicy)

Transforms a stream to a window stream where each member is a CepWindow. Each window is a snapshot window that is defined by the closest event endpoints in the stream.

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

Syntax

public static CepWindowStream<CepWindow<TPayload>> SnapshotWindow<TPayload>(
    this CepStream<TPayload> source,
    SnapshotWindowOutputPolicy outputPolicy
)

Type Parameters

  • TPayload
    Type of the input event payload.

Parameters

Return Value

Type: Microsoft.ComplexEventProcessing.Linq.CepWindowStream<CepWindow<TPayload>>
A window stream to which aggregates, ranking or user-defined operations can be applied.

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 Using Event Windows and Snapshot Windows.

Examples

var snapshotAgg = from w in inputStream.SnapshotWindow(SnapshotWindowOutputPolicy.Clip)
                  select new { sum = w.Sum(e => e.i) };

See Also

Reference

CepStream Class

SnapshotWindow Overload

Microsoft.ComplexEventProcessing.Linq Namespace