Migrating from classic rule engine to decision engine
The classic rule engine is deprecated, so you must migrate your rule projects to use the decision engine. New rule projects in a decision service automatically use the decision engine.
About this task
The decision engine works in a similar way to the classic rule engine, although it has differences in the compilation and how it loads rules. You must adjust the rule project content to work with the decision engine.
The decision engine does not rely on ILOG Rule Language (IRL). In Rule Designer, the IRL tab for BAL rules and ruleflows in projects that use the decision engine is not available in the rule editor. In the BOM editor, you can work directly with ARL to define the BOM-to-XOM mapping for rule projects that use the decision engine.
The classic rule engine uses a configuration file (engine.conf) to configure its resource settings. The decision engine does not use any of these properties, and they are ignored at run time.