myValue = new EOQualifierVariable((String) valueMap.get("name"));
myValue = new EOQualifierVariable((String) valueMap.get("_key"));
  public void loadFromMap(EOModelMap _map) throws EOModelException {    myKey = _map.getString("key", true); //$NON-NLS-1$    mySelectorName = _map.getString("selectorName", true); //$NON-NLS-1$    Object value = _map.get("value"); //$NON-NLS-1$    if (value instanceof Map) {      Map valueMap = (Map) value;      String clazz = (String) valueMap.get("class"); //$NON-NLS-1$      if ("EONull".equals(clazz)) { //$NON-NLS-1$        myValue = null;      }      else if ("EOQualifierVariable".equals(clazz)) { //$NON-NLS-1$        myValue = new EOQualifierVariable((String) valueMap.get("name")); //$NON-NLS-1$      }      else {        throw new EOModelException("Unknown class " + clazz);      }    }    else {      myValue = value;    }  }