Preface
RulePoint
RulePoint Concepts
- RulePoint Concepts Overview
- Understanding RulePoint Entities
Using RulePoint
RulePoint Objects
- RulePoint Objects Overview
- State of RulePoint Objects
Working with Topics
Working with Connections
Working with Sources
Working with Responders
Working with Responses
Working with Watchlists
Working with Analytics
- Analytics Overview
- Analytic Types
- Creating an Analytic
- Copying an Analytic
- Editing an Analytic
- Deleting an Analytic
- Viewing Related Objects
- Predefined Analytics
  - abs
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  - ceil
  - charat
  - clean
  - compareto
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  - confidence
  - correlation
  - count
  - current
  - date
  - datedifference
  - endswith
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- Predefined Operators
  - contains
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  - has
  - in
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  - notMatch
  - search
  - unique
  - group by
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  - unmatched
- 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
- 6.2
- 6.1.2

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Referencing a Single Event with a Single Property Value

You can reference a property value of a single event in a rule using one of the following syntax:

${[topicProperty]}

${[topicAlias].[topicProperty]}

${[topicName].[topicProperty]}

Here, topicAlias is the name of the alias that you assign to a topic, such as s for stock. topicName is the name of the topic and topicProperty is the name of the event property.

Use of topic name or topic alias is optional while referencing single topic rules.

For example, the following rule specifies that the body of the response will display the price of the one XYZ stock event matched by the rule in place of ${price}:

WHEN 1 stock WITH symbol = "XYZ" AND price < 90 THEN EmailBrokerResponse WITH to="broker@company.com", body="XYZ is trading at ${price}."

The result of the rule is an email containing “XYZ is trading at 72.”

If you reference a topic property within a response that does not contain a value, the rule evaluates, but the response output displays null where the value appears normally.

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User Guide

User Guide

Referencing a Single Event with a Single Property Value

Referencing a Single Event with a Single Property Value