[rules-users] Problem with Drools 4.0.3

[prateek.katiyar at wipro.com]

Hello all
 
I am using Drools4.0.3
I have a J2EE application that I am running  on Tomcat.
I am using a singleton class in which I am doing the following steps in the constructor :
 
PackageBuilderConfiguration pkgBuilderCfg = new PackageBuilderConfiguration();
JavaDialectConfiguration javaConf = (JavaDialectConfiguration) pkgBuilderCfg.getDialectConfiguration( "java" );
javaConf.setCompiler( JavaDialectConfiguration.JANINO );
builder = new PackageBuilder(pkgBuilderCfg);
ruleBase = RuleBaseFactory.newRuleBase();
 
Also I am using a method in the same class to validate the inputs which is as follows:
 
private void validateXML() throws Exception
 {
  String drlStr = null;
  InputStreamReader drl = null;
  File ruleFile = new File(this.fileName);
  long curLMTime = ruleFile.lastModified();
  if(!(curLMTime == lmdTimeForXML))
  {
   lmdTimeForXML = curLMTime;
   if(strReader != null) {
    strReader.close();
    strReader = null;
   }
   if(pkg != null){
    String packageName = (ruleBase.getPackage("jbossrules")).getName();
    if(packageName != null && packageName.equals("jbossrules")){
     Rule[] rules =  (ruleBase.getPackage("jbossrules")).getRules();
     if(rules != null){
      for (int i=0; i<rules.length; i++){
       String ruleName = rules[i].getName();
       try {
        ruleBase.removeRule(packageName,ruleName);
       }catch(NullPointerException ne){
       }
      }
     }
    }
   }
   try {
    drl =new InputStreamReader(new FileInputStream(this.fileName));
    drlStr = this.getInputStreamAsString(drl);
    strReader = new StringReader(drlStr);
    builder.addPackageFromXml(strReader);
    pkg = builder.getPackage();
    ruleBase.addPackage(pkg);
   } catch (IOException e) {
    e.printStackTrace();
    log.error("*********Can not create inputstrea************", e);
    lmdTimeForXML = 0;
    throw e;
    //removeRules();
   }catch (Exception e) {
    e.printStackTrace();
    log.error("*********CAN NOT CREATE THE RULE BASE INSTANCE************", e);
    lmdTimeForXML = 0;
    throw e;
    //removeRules();
   }finally {
    try {
     if(drl != null) {
      drl.close();
     }
    } catch (IOException e) {
     e.printStackTrace();
     log.error("*********Can not create inputstrea************", e);
    }
   }
  }
  StatefulSession session = ruleBase.newStatefulSession();
  session.insert(this.beanObj);
  session.setGlobal("response",this.response);
  if(this.assertObjArr != null && this.assertObjArr.length > 0)
  {
   for(int i=0; i<this.assertObjArr.length; i++)
    session.insert(this.assertObjArr[i]);
  }
  
  Agenda agenda=session.getAgenda();
  AgendaGroup agendagroup=agenda.getAgendaGroup(this.getMethodName());
                session.setFocus(agendagroup);
  session.fireAllRules();
  ResponseBean res = (ResponseBean)session.getGlobal("response");
  this.setResponse(res);
  session.clearAgenda();
  session.setGlobal("response",null);
  session.dispose();
  session = null;  
 }
 
Now when I am deploying any wrong rule,it gets stored in the memory.If again I am deploying the rules then the previous wrong rules are not deleting.
Please suggest me how can I overcome this problem?
 
 
With Regards
Prateek



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