package com.test;

import java.io.StringReader;

import org.drools.KnowledgeBase;
import org.drools.KnowledgeBaseConfiguration;
import org.drools.KnowledgeBaseFactory;
import org.drools.builder.KnowledgeBuilder;
import org.drools.builder.KnowledgeBuilderFactory;
import org.drools.builder.ResourceType;
import org.drools.conf.MaxThreadsOption;
import org.drools.conf.MultithreadEvaluationOption;
import org.drools.io.ResourceFactory;
import org.drools.runtime.StatefulKnowledgeSession;

public class Main {
	public static class Foo {
		private int value;
		public Foo(int value) {
			this.value = value;
		}
		public int getValue() {
			return value;
		}

		public void setValue(int value) {
			this.value = value;
		}
	}
	private final static String rule = "" + 
	"package test\n" + 
	"import com.test.Main.Foo;\n" +
	"rule test\n" + 
		"\twhen\n" + 
			"\t\tFoo($p : value > 20)\n" +
		"\tthen\n" +
			"\t\tSystem.out.println(\"Fired\");\n" +
	"end";
	
	public static void main(String[] args) throws Exception {
		KnowledgeBaseConfiguration conf = KnowledgeBaseFactory.newKnowledgeBaseConfiguration(); //1
		conf.setOption(MultithreadEvaluationOption.YES); //2
		conf.setOption(MaxThreadsOption.get(10)); //3
		KnowledgeBase kb = KnowledgeBaseFactory.newKnowledgeBase(conf); //4
		//5
		KnowledgeBuilder bld = KnowledgeBuilderFactory.newKnowledgeBuilder(); //6
		bld.add(ResourceFactory.newReaderResource(new StringReader(rule)), ResourceType.DRL); //7
		kb.addKnowledgePackages(bld.getKnowledgePackages()); //8
		//9
		StatefulKnowledgeSession session = kb.newStatefulKnowledgeSession(); //10		
		session.insert(new Foo(25)); //11
		//12
		session.fireAllRules(); //13
	}
}