[This topic is pre-release documentation and is subject to change in future releases. Blank topics are included as placeholders.]

Returns the aggregation state prototype for use in grouping aggregation states per group-by keys.

Namespace: net.esper.eql.expression
Assembly:   NEsper (in NEsper.dll)

Syntax

Visual Basic (Declaration)
Public MustOverride ReadOnly Property AggregationFunction As Aggregator
C#
public abstract Aggregator AggregationFunction { get; }
Visual C++
public:
virtual property Aggregator^ AggregationFunction {
	Aggregator^ get () abstract;
}

Return Value

prototype aggregation state as a factory for aggregation states per group-by key value