public IntId(Class cls,
    Integer key) 
{
        this(cls, (key == null) ? 0 : key.intValue());
}

 public IntId(Class cls,
    String key) 
{
        this(cls, (key == null) ? 0 : Integer.parseInt(key));
}

 public IntId(Class cls,
    int key) 
{
        super(cls);
        this.key = key;
}

 public IntId(Class cls,
    int key,
    boolean subs) 
{
        super(cls, subs);
        this.key = key;
}

 public int getId() 
{
        return key;
}

 public Object getIdObject() 
{
        return Numbers.valueOf(key);
}

 protected boolean idEquals(OpenJPAId o) 
{
        return key == ((IntId) o).key;
}

 protected int idHash() 
{
        return key;
}

 public String toString() 
{
        return String.valueOf(key);
}