Component ruleset Vs Built on application ruleset

General
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1

Hi everyone,

For a Pega application, Built on application’s rules takes precedence over component’s rules. Is it expected behaviour ? If yes, then how can we make sure that component’s rules should be resolved always ?

Scenario: We have configured Pega robot manager as Built on application. And also added Pega Robotic Automation Importer component in same application. The service responsible for deploying package from robotic studio are available in both rulesets. But always Robot manager’s rules are getting resolved.

Should we provide component’s rulesets into application’s ruleset stack to change this precedence ? or is there any other way to resolve the rules from component ruleset ?

2

@Vikas_Agrawal

Components have a prerequisite, which is the actually the place in the ruleset stack the rulesets are added.

Prerequisite.png
Prerequisite.png922×378 14.1 KB

The figure above is from the PegaPeerReview component we’ve added to our application. The ruleset stack for my operator shows in this case as follows.

PegaPeerReview_20200528T143606789:01-01-08
PegaPeerReviewPlatformOverrides:08-50-01
JiraIntegration:01-01
Pega-ProcessCommander:08-07
Pega-DeploymentDefaults:08-07

As you can see, the Jira component is also added to the same application. They are stacked like the figure below

Components.png
Components.png1244×190 19.6 KB

In our ruleset stack we’ve other components. They are defined in other applications and it depends on their prerequisites where they are placed.

In general the following rule applies;

  • Components are put in your stack based on prerequisites
  • Multiple components with the same prerequisite on the same application
    • They are placed in that order on top of the stack
  • Multiple components with the same prerequisites on different applications
    • The higher the application in the application stack, the lower the component is placed

The last bit about multiple applications and components with the same prerequisite might be a bit confusing. Let’s say you’ve got a framework layer with Component A and an application layer with Component B. Both components have the same prerequisite and the order in which they appear will be

Component A:01-01
Component B:01-01
Pega-ProcessCommander:08-07
Pega-DeploymentDefaults:08-07

So, if the order of the ruleset is incorrect, you probably need to check the component’s prerequisites. It’s location in the application stack only influences its position relative to other components in the ruleset stack, not to other application rulesets.

3

@BasM7674

Thanks a lot for clarifying ruleset hierarchy for components. My question in more for the scenario where one application’s built on application and component both are present. Same rule is available in built on application as well as component, Can we make that rule to get resolved from component instead of built on ?

4

@Vikas_Agrawal

That depends on the prerequisites of the component. If the prerequisite puts the component’s ruleset below the built on application’s ruleset, then only when copying the rule to your own ruleset.