Aug 15, 2026. OpenRules Release 12.2.0 comes with a brand-new implementation of Rule Solver and Rule Scheduler. It extends the OpenRules expression language that now incorporates optimization concepts, such as constrained variables, constraints, and objectives, directly into regular decision tables. New capabilities:
- The standard Glossary can define unknown decision variables similarly to the known variables but specifying their possible values in the “Domain” column.
- Unknown (constrained) variables can participate in FEEL-like expressions with all arithmetic and logical operators placed directly in decision table cells.
- Predefined functions such as “Sum”, “Min/Max”, “AllDifferent“, can be used inside decision tables to define new expressions and constraints.
- Predefined functions such as “Activity”, “Resource”, ”ActivityPrecedence”, ”ActivityRequiresResource” can be used inside decision tables to represent and solve scheduling and resource allocation problems.
- Predefined search methods like SolverFindSolution, SolverMinimize, or SolverMaximize.
The extended expression language remains oriented to businesspeople. This approach has a dual effect: it extends the capabilities of traditional rule-based systems and makes optimization solvers more business-friendly.
You may check out many examples, simple and more complex, that illustrate the new capabilities.
Other Improvements:
- OpenRules IDE was migrated to the latest Angular.
- Fixed small issues from old releases.
Contact support@openrules.com with any questions or comments.
openrulesdecisionmanager.com 