drools读取规则

最新推荐文章于 2022-12-08 15:17:41 发布

j_judge

最新推荐文章于 2022-12-08 15:17:41 发布

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本文链接：https://blog.youkuaiyun.com/j_judge/article/details/39180711

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这是一个示例程序，演示如何使用Drools读取并执行规则。程序加载知识库，创建`Accident`和`Policy`对象，并插入到知识会话中。然后触发规则的执行。

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package com.sample;

import java.util.ArrayList;

/**
* This is a sample class to launch a rule.
*/
public class TT {

public static final void main(String[] args) {
try {
// load up the knowledge base

org.kie.internal.KnowledgeBase kbase= readKnowledgeBase();
org.kie.internal.runtime.StatefulKnowledgeSession ksession = kbase
.newStatefulKnowledgeSession();
// go !
Accident accident = new Accident();
accident.setCaseState("1");
Policy policy = new Policy();
ArrayList<Policy> policies=new ArrayList<Policy>();
policies.add(policy);
accident.setPolicyList(policies);
ksession.insert(accident);
ksession.insert(policy);
// Message message = new Message();
// message.setMessage("Hello World");
// message.setStatus(Message.HELLO);
// ksession.insert(message);
ksession.fireAllRules();
} catch (Throwable t) {
t.printStackTrace();
}
}

private static org.kie.internal.KnowledgeBase readKnowledgeBase() throws Exception {
org.kie.internal.builder.KnowledgeBuilder kbuilder = org.kie.internal.builder.KnowledgeBuilderFactory
.newKnowledgeBuilder();
kbuilder.add(org.kie.internal.io.ResourceFactory.newClassPathResource("first/accident.dsl"),
org.kie.api.io.ResourceType.DSL);
kbuilder.add(org.kie.internal.io.ResourceFactory.newClassPathResource("first/test.dslr"),
org.kie.api.io.ResourceType.DSLR);
org.kie.internal.KnowledgeBase kbase = org.kie.internal.KnowledgeBaseFactory.newKnowledgeBase();
kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
return kbase;
}

public static class Message {

public static final int HELLO = 0;
public static final int GOODBYE = 1;

private String message;

private int status;

public String getMessage() {
return this.message;
}

public void setMessage(String message) {
this.message = message;
}

public int getStatus() {
return this.status;
}

public void setStatus(int status) {
this.status = status;
}

}

}