Re: A design and coding question: If some1 can help

Hi all,

I got into an infinite loop problem when trying to do the following:

// Result
public class Result
{
  private List<Listener> listeners = new ArrayList<Listener>();
  private List<String> log = new ArrayList<String();

  public void addListener(Listener listener)
  {
      list.add(listener);
  }

  public void add(String str)
  {
     // allows the use of listener to process the result. This is
like an observer/observable
     // pattern
     log.add(str);
     for(Listener each: listeners)
     {
        each.add(str);<-------- likely a problem here.
     }
  }
}

// Task - each task has it owns result instance.
public class Task
{
  private Result result = new Result();
  public Result getResult()
  {
     return result();
  }
}

// ProblematicConstruct
public class ProblematicConstruct implements Listener
{
  private Result result;
  Problem(Result result)
  {
     this.result = result
  }

  public void add(String s)
  {
     //?????????? this will goes into an infinite loop ???????
     result.add(s);
  }
}

Can some one gives some advice or help on how to resolve it? Since
there is not way to restrict people from doing the above Problematic
construct.

Thanks,
Kae

  public void add(String s)
  {
     //?????????? this will goes into an infinite loop ???????
     result.add(s);
  }