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- Using the distinct, group by, and ummatched Filters
DRQL
Working with Rules
Working with Alerts
Setting Access Controls
Troubleshooting RulePoint Issues
Connecting to an Ultra Messaging Application
Creating an Ultra Messaging JMS Source

User Guide

6.1.2
- 6.2
- 6.1

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Referencing a Range of Properties from an Event Set

When using event sets with multiple values for a single property, you can display more than one property value for each event in the set.

You can define the data in a rule using the following syntax:

${[TopicName].[TopicProperty](n:m, [format])}

Here, n represents the offset within the range of events, and m represents the count of events starting from the offset. For example, five events from the latest to the oldest are e5,e4,e3,e2,e1 and the notation is 2:4. The formatting starts from 2 (e4) and the count of the four events (e4,e3 ,e2 and e1) are considered for the formatting.

The following rule emails a broker with the last two out of three prices, separated by a comma:

WHEN 3 stock s WITH symbol = "XYZ" AND price < 90 THEN EmailBrokerResponse WITH to="broker@company.com", body="The last two prices of XYZ are ${s.price(2:3,COMMA)}."

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User Guide

User Guide

Referencing a Range of Properties from an Event Set

Referencing a Range of Properties from an Event Set