【Drools学习笔记】02-动态加载规则

上一篇Drools简介中的例子将规则写在了drl文件中，我们还可以动态的拼凑我们想要的规则，代码如下：

@Test
public void testKieRuntimeAccess() throws IOException, ClassNotFoundException {
        String str = "";
        str += "package org.drools.compiler.test\n";
        str += "import " + Message.class.getName() + "\n";
        str += "rule \"Hello World\"\n";
        str += "when\n";
        str += "    Message( )\n";
        str += "then\n";
        str += "    System.out.println( drools.getKieRuntime() );\n";
        str += "end\n";

        KieBase kbase = KnowledgeBuilderFactory.newKnowledgeBuilder().add(ResourceFactory.newByteArrayResource(str).getBytes()), ResourceType.DRL);        
        kbase = SerializationHelper.serializeObject( kbase );
        final KieSession ksession = kbase.newKieSession();
        ksession.insert( new Message( "help" ) );
        ksession.fireAllRules();
        ksession.dispose();
}