package com.sample;

import java.io.InputStreamReader;
import java.io.Reader;

import org.drools.FactException;
import org.drools.RuleBase;
import org.drools.RuleBaseFactory;
import org.drools.WorkingMemory;
import org.drools.compiler.PackageBuilder;
import org.drools.rule.Package;
import com.sample.MessageEA;
import com.sample.TransactionVO;

/**
 * This is a sample file to launch a rule package from a rule source file.
 */
public class DroolsTest2 {

    public static final void main(String[] args) {
        try {
        	
        	//load up the rulebase
            RuleBase ruleBase = readRule();
            WorkingMemory workingMemory = ruleBase.newStatefulSession();
            MessageEA messageEA = new MessageEA();
            messageEA.setFileName("ABC-834-test-100.edi");
            workingMemory.insert( messageEA );
            
            TransactionVO transVO = new TransactionVO("ABC-834", "ABC.834.EDI", "ABC.834.XML", "834");
            TransactionVO transVO1 = new TransactionVO("XYZ-834", "XYZ.834.EDI", "XYZ.834.XML", "834");
            TransactionVO transVO2 = new TransactionVO("834", "INBOUND.834.EDI", "INBOUND.834.XML", "834");
            workingMemory.insert( transVO );
            workingMemory.insert( transVO1 );
            workingMemory.insert( transVO2);
            try{
            	workingMemory.fireAllRules();
            }catch (FactException e ){
            	System.out.println("err: "+e.getMessage());
            }catch(Exception ee){
            	System.out.println("Err2 : "+ee.getMessage());
            }
            
            System.out.println("fName: "+messageEA.getFileName());
            System.out.println("frQ: "+messageEA.getFromQ());
            System.out.println("toQ: "+messageEA.getToQ());
            
            
        } catch (Throwable t) {
            t.printStackTrace();
        }
    }

    /**
     * Please note that this is the "low level" rule assembly API.
     */
	private static RuleBase readRule() throws Exception {
		//read in the source
		Reader source = new InputStreamReader( DroolsTest.class.getResourceAsStream( "/EATech.drl" ) );
		
		//optionally read in the DSL (if you are using it).
		//Reader dsl = new InputStreamReader( DroolsTest.class.getResourceAsStream( "/mylang.dsl" ) );

		//Use package builder to build up a rule package.
		//An alternative lower level class called "DrlParser" can also be used...
		
		PackageBuilder builder = new PackageBuilder();

		//this wil parse and compile in one step
		//NOTE: There are 2 methods here, the one argument one is for normal DRL.
		builder.addPackageFromDrl( source );

		//Use the following instead of above if you are using a DSL:
		//builder.addPackageFromDrl( source, dsl );
		
		//get the compiled package (which is serializable)
		Package pkg = builder.getPackage();
		
		//add the package to a rulebase (deploy the rule package).
		RuleBase ruleBase = RuleBaseFactory.newRuleBase();
		ruleBase.addPackage( pkg );
		return ruleBase;
	}
	
}