[JENA-1204] Independently Configurable BulitinRegistry for Jena Rules Engine

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Jena 3.1.1
• Fix Version/s: Jena 3.1.1
• Component/s: Jena
• Labels: rules

Environment

any

• Assignee: Dave Reynolds
• Reporter: Paul Houle
• Created: 05/Jul/16 14:43
• Updated: 08/Nov/16 10:21
• Resolved: 17/Jul/16 11:29

Description

An appealing case for the Jena Rules Engine is to use rules to trigger a set of actions in the rule heads that create side effects in the Java Universe: consider (1) constructing and populating Java data structures in the rule head, and (2) use of the rules engine in a "reactive" scenario where changes in the outside world are inserted into the graph as facts, triggering actions on a distributed system in the heads.

In cases like this, the creation of a new set of built-ins could occur somewhat frequently so efficiency matters here so I don't like the idea of this registered in some central registry so that we can pass in the built-in parameter with the resource to the factory, so the advised method for configuration is to add a setter on the GenericRuleReasoner, The only concern I have is "order-of-operations" involving initialization, etc.

Issue Links

• links to: GitHub Pull Request #150