/**

package fr.dto;

import java.io.*;

import javax.swing.Box.Filler;

import org.apache.commons.io.FileUtils;

import org.drools.RuleBase;

import org.drools.RuleBaseFactory;

import org.drools.WorkingMemory;

import org.drools.brms.server.util.BRDRLPersistence;

import org.drools.brms.server.util.BRXMLPersistence;

import org.drools.compiler.PackageBuilder;

import org.drools.event.DebugWorkingMemoryEventListener;

import org.drools.rule.Package;

/**

* @author mazzaz

public class RulesEngine {

private RuleBase rules;

private Reader source;

private boolean debug = false;

public RulesEngine(String rulesFile) throws RulesEngineException {

super();

try {

try

{

File file = null;

String brl =null;

file = new File(rulesFile);

BRXMLPersistence read = (BRXMLPersistence) BRXMLPersistence.getInstance();

BRDRLPersistence write = (BRDRLPersistence) BRDRLPersistence.getInstance();

System.out.println("read && write instance ok \n");

brl = FileUtils.readFileToString(file,"UTF-8");

System.out.println("le fichier contient"+ brl);

String outputDRL = write.marshal(read.unmarshal(brl));// code blocked here

String drlFilePath = "src/main/rules/Test_brl_to_drl.drl";

File drlFile = new File(drlFilePath);

FileUtils.writeStringToFile(drlFile,outputDRL,"");

source = new InputStreamReader(RulesEngine.class

.getResourceAsStream(drlFilePath));

}catch (IOException ie){

System.out.println("ie.getCause(): "+ie.getCause()

+"\n"+"ie.getMessage(): "+ie.getMessage());

}

PackageBuilder builder = new PackageBuilder();

builder.addPackageFromDrl(source);

Package pkg = builder.getPackage();

rules = RuleBaseFactory.newRuleBase();

rules.addPackage(pkg);

} catch (Exception e) {

throw new RulesEngineException(

"Impossible de Compiler le fichier de regles : "

+ rulesFile, e);

}

public void executeRules(WorkingEnvironmentCallback callback) {

* L’instanciation de la class workingMemory permet de determiner si

* toute si toute les conditions d’une regle sont remplies alors les

* consequences de cette regles sont executées

WorkingMemory workingMemory = rules.newStatefulSession();

if (debug) {

workingMemory

.addEventListener(new DebugWorkingMemoryEventListener());

}

callback.initEnvironment(workingMemory);// initEnvironment methode de

// l'interface

* L’execution des conséquences d’une regle se produit lorsqu’on invoque

* l’objet fireAllRules WorkingMemory

workingMemory.fireAllRules();

}