com.zlyx.easy.drools.executor.RuleExecutor Maven / Gradle / Ivy
package com.zlyx.easy.drools.executor;
import java.util.Map;
import org.kie.api.KieBase;
import org.kie.api.runtime.KieSession;
import com.zlyx.easy.core.exception.BusinessException;
import com.zlyx.easy.drools.builder.RuleBuilder;
import com.zlyx.easy.drools.util.DroolsUtils;
/**
* 规则验证执行器
*
* @ClassName ValidateExecutor
* @Author 赵光
* @Description ValidateExecutor
* @Date 2020/5/28 0028
* @Version 1.0
*/
public abstract class RuleExecutor extends ReadExecutor {
/**
* 执行规则
*
* @param ruleName
* @param ruleBody
* @return
* @throws Exception
*/
public String validate(String ruleName, RuleBuilder.RuleBody ruleBody, Map props) throws Exception {
ruleBody.importClass(getTClass()); // 导入类
String rule = doFilter(ruleBody).build();
System.out.print("\n==============================================================================\n");
System.out.print("输出原始规则文本内容：\n\n");
System.out.print(rule);
System.out.print("\n==============================================================================\n");
rule = DroolsUtils.render(rule, ruleName, ruleBody.props());
System.out.print("\n\n输出渲染后规则文本内容：\n\n");
System.out.print(rule);
System.out.print("\n==============================================================================\n");
T context = initContext();
if (context == null) {
BusinessException.throwException("规则执行上下文没有设置");
}
try {
KieBase kieBase = DroolsUtils.initKieBase(rule);
if (kieBase == null) {
BusinessException.throwException("规则引擎未设置");
}
KieSession kieSession = kieBase.newKieSession();
System.out.print("\n\n执行开始规则：\n\n");
kieSession.insert(context);
kieSession.fireAllRules();
kieSession.dispose();
System.out.print("\n\n规则执行完毕\n\n");
System.out.print("\n==============================================================================\n");
} catch (Exception e) {
log.error(e.getMessage());
}
return rule;
}
/**
* 初始化规则上下文
*
* @return
*/
public abstract T initContext() throws Exception;
}