By adding aggregations, you can define various functions to apply to events in an event
strategy. For example, you can sum property values from incoming events for trend detection,
such as the number of dropped calls, transactions, or aggregated credit card
purchases.
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In an event strategy, add an Aggregate shape.
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Right-click the Aggregate shape to open the Aggregate properties
window.
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Click Add aggregation.
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Select a function to use for aggregating data.
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In the Source field, specify a property that is available in the
data flow.
Note: By default, all properties defined in the event strategy class are available
through a stream data set. This makes properties of the event strategy class available
to the
Real-time Data stream shape. Depending on how the event
strategy is constructed, additional properties can be available in the list of the
aggregate source field. Additional properties can include:
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Properties from aggregations within the same event strategy processed prior to
the current one.
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Properties that are coming from a preceding Lookup shape.
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Properties that are coming from mapped fields from the preceding Join shapes.
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In the Aggregate field, provide a name.
The name is a dynamic property that exists only in the context of the event strategy.
The dynamic property contains the result of the aggregation function. Aggregation names
within an event strategy must be unique.
- Optional:
To add more aggregations, repeat steps 3 through
6.
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Click Submit.