package com.simon.springbootdmn.dmn;

import org.activiti.dmn.api.*;
import org.activiti.dmn.engine.DmnEngine;
import org.activiti.dmn.engine.DmnEngineConfiguration;

import java.util.HashMap;
import java.util.Map;

/**
 * @author Simon
 */
public class DmnDemo {

    public static void main(String[] args) {
        // 根据默认配置创建引擎的配置实例
        DmnEngineConfiguration config = DmnEngineConfiguration
                .createDmnEngineConfigurationFromResourceDefault();
        // 创建规则引擎
        DmnEngine engine = config.buildDmnEngine();
        // 获取规则的存储服务组件
        DmnRepositoryService rService = engine.getDmnRepositoryService();
        // 获取规则服务组件
        DmnRuleService ruleService = engine.getDmnRuleService();
        // 进行规则 部署
        DmnDeployment dep = rService.createDeployment()
                .addClasspathResource("dmn/first.dmn").deploy();
        // 进行数据查询
        DmnDecisionTable dt = rService.createDecisionTableQuery()
                .deploymentId(dep.getId()).singleResult();
        // 初始化参数
        Map<String, Object> params = new HashMap<>();
        params.put("personAge", 19);
        // 传入参数执行决策，并返回结果
        RuleEngineExecutionResult result = ruleService.executeDecisionByKey(
                dt.getKey(), params);
        // 控制台输出结果
        System.out.println(result.getResultVariables().get("myResult"));
        // 重新设置参数
        params.put("personAge", 5);
        // 重新执行决策
        result = ruleService.executeDecisionByKey(dt.getKey(), params);
        // 控制台重新输出结果
        System.out.println(result.getResultVariables().get("myResult"));
    }
}