Rule Registry - rulii-spring Documentation

The SpringRuleRegistry is a registry backed by the Spring application context. Instead of maintaining its own internal collection, it delegates directly to ListableBeanFactory — your rules are Spring beans, and the registry queries them as such.

Injecting the Registry

The registry is auto-configured and available for injection:

@Service
public class RuleExecutionService {

    private final RuleRegistry registry;
    private final RuleContextOptions ruleContextOptions;

    @Autowired
    public RuleExecutionService(RuleRegistry registry, RuleContextOptions ruleContextOptions) {
        this.registry = registry;
        this.ruleContextOptions = ruleContextOptions;
    }

    public void executeByName(String ruleName) {
        // Preferred: run through a RuleFlow; the registry lookup happens at execution time
        RuleFlow<RuleContext> flow = RuleFlow.builder()
            .name("ExecuteByNameFlow")
            .run(ruleName)
            .build();
        flow.run(RuleContext.builder().with(ruleContextOptions).build());
    }
}

Building the context with the auto-configured RuleContextOptions bean wires the Spring registry into the flow, so run(name) and run(Class) lookups resolve against your Spring beans at execution time.

Looking Up Rules

You can retrieve a rule by its name (the bean name assigned during scanning):

// Get a rule by name
Rule rule = registry.get("CreditCheckRule");

// Get with a specific type
Rule rule = registry.get("CreditCheckRule", Rule.class);

Listing All Rules

// All registered rules
List<Rule> rules = registry.getRules();

// All registered rulesets
List<RuleSet> ruleSets = registry.getRuleSets();

// All registered ruleflows (new in 2.0.0)
RuleFlow<?> flow = registry.getRuleFlow("CheckoutFlow");
List<RuleFlow<?>> flows = registry.getRuleFlows();

// Check if a name is already registered
boolean exists = registry.isNameInUse("CreditCheckRule");

// Total count of runnable beans
int count = registry.getCount();

Registry API Reference

Method	Returns	Description
get(name)	T	Retrieve a rule/ruleset by bean name
get(name, type)	T	Retrieve with type safety
getRules()	List<Rule>	All Rule beans in the context
getRuleSets()	List<RuleSet>	All RuleSet beans in the context
getRuleFlow(name)	RuleFlow<?>	Retrieve a RuleFlow bean by name (new in 2.0.0)
getRuleFlows()	List<RuleFlow<?>>	All RuleFlow beans in the context (new in 2.0.0)
isNameInUse(name)	boolean	Check if a bean name exists
getCount()	int	Total Runnable bean count

Context Shutdown

Like SpringObjectFactory, the registry listens for ContextClosedEvent and releases its reference to the ListableBeanFactory. Any call to the registry after shutdown throws an UnrulyException with a clear message: "Application Context is closed."