自定义AgendaFilter执行指定规则

自定义AgendaFilter来执行指定的规则。

创建KIESession部分代码：

@Bean
@ConditionalOnMissingBean(KieSession.class)
public KieSession kieSession() throws IOException {   
	return kieContainer().newKieSession();
}

遍历Map，执行每一个规则：

for (Map.Entry<Long, String> entry : ruleIdsAndData.entrySet()){

    List<Object> facts = new ArrayList<Object>();
    facts.add(entry.getValue());

    Map<String, String> ruleResponse = new HashMap<String, String>();
    kieSession.setGlobal("ruleResponse", ruleResponse);                     

    TrackingAgendaEventListener agendaEventListener = new TrackingAgendaEventListener();
    kieSession.addEventListener(agendaEventListener);

    String ruleName = myRuleService.retrieveRuleNameById(entry.getKey());               
    log.debug("Attempting to fire the following rule : " + ruleName);

    facts.add(new FireAllRulesCommand(new RuleNameEqualsAgendaFilter(ruleName)));   
    kieSession.execute(facts);

    log.debug("RuleResponse after rule has fired is : " + ruleResponse);                                                            
}

自定义RuleNameEqualsAgendaFilter代码如下：

@Slf4j
    public class RuleNameEqualsAgendaFilter implements AgendaFilter {

        private final String ruleName;

        private final boolean accept;

        public RuleNameEqualsAgendaFilter(final String name) {
            this(name, true);
        }

        public RuleNameEqualsAgendaFilter(final String name, final boolean accept) {
            this.ruleName = name;
            this.accept = accept;
        }

        public String getName() {
            return ruleName;
        }

        public boolean isAccept() {
            return accept;
        }

        public boolean accept( Match match) {
            log.debug("Comparing : " + match.getRule().getName() + " to ruleName : " + this.ruleName);
            if (match.getRule().getName().equals(this.ruleName)) {
                return this.accept;
            } else {
                return !this.accept;
            }
        }
    }

自定义AgendaFilter执行指定规则插图