drools中使用function的方法小结

function 返回值类型 方法名(方法参数){
	方法体
}

<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.drools</groupId>
            <artifactId>drools-bom</artifactId>
            <type>pom</type>
            <version>7.69.0.Final</version>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>

<dependencies>
    <dependency>
        <groupId>org.drools</groupId>
        <artifactId>drools-compiler</artifactId>
    </dependency>
    <dependency>
        <groupId>org.drools</groupId>
        <artifactId>drools-mvel</artifactId>
    </dependency>
</dependencies>

<kmodule xmlns="http://www.drools.org/xsd/kmodule">
    <kbase name="function-kabse" packages="rules" default="false">
        <ksession name="function-ksession" default="false" type="stateful"/>
    </kbase>
</kmodule>

@Data
@AllArgsConstructor
public class Person {
    private String name;
    private Integer age;
}

public class DroolsApplication {
    public static void main(String[] args) {
        KieServices kieServices = KieServices.get();
        KieContainer kieContainer = kieServices.getKieClasspathContainer();
        KieSession kieSession = kieContainer.newKieSession("function-ksession");
        kieSession.addEventListener(new DebugRuleRuntimeEventListener());
        Person person = new Person("张三", 16);
        kieSession.insert(person);
        kieSession.fireAllRules();
        kieSession.dispose();
    }
}

rule "rule_eval"
    when
        $person: Person()
        // eval 也可以调用java的静态方法
        eval(playGameOk($person))
    then
        System.out.println("ok");
end