Listing 2. IOMController is the root class of the model that contains and provides the possibility of access to the instances of IOMClass and IOMAssociation involved in the model.

package com.ftp.codegenerator;

import java.util.*;

public class IOMController {

  private static ArrayList classes = new ArrayList();
  private static ArrayList associations = 
    new ArrayList();
  public static ArrayList getClasses() {
    return classes;
  }

  public static ArrayList getAssociations() {
    return associations;
  }

  public static void addClass(IOMClass cl) {
    classes.add(cl);
  }

  public static void addAssociation(
    IOMAssociation association) {
    associations.add(association);
  }

  public static IOMClass queryClass(String name) {
    for (int i = 0; i < classes.size() ; i++) {
      IOMClass cl = (IOMClass) classes.get(i);
      if(cl.getName().equals(name))
        return cl;
    }
    return null;
  }

}