public QName getName() 
{
      
        return _name;
}

 public Attribute getRef() 
{
        return _ref;
}

 public Type getType() 
{
        return isRef() ? getRef().getType() : _type;
}

 public boolean isGlobal() 
{
        return _isGlobal;
}

 public boolean isOptional() 
{
        return _isOptional;
}

 public boolean isRef() 
{
        return _ref!=null;
}

 public  void setGlobal(boolean isGlobal) 
{
        _isGlobal = isGlobal;
}

 public  void setName(QName name) 
{
        _name = name;
}

 public  void setOptional(boolean isOptional) 
{
        assert isOptional && !isGlobal() : "Global attributes cannot be optional.";
        _isOptional = isOptional;
}

 public  void setRef(Attribute ref) 
{
        assert !isGlobal();
        _ref = ref;
        _type = null;
}

 public  void setType(Type type) 
{
        assert !isRef();
        _type = type;
}

 public String toString() 
{
        return "\n    Attribute{" +
            "_name=" + _name +
            ", _type=" + _type +
            ", _ref=" + (_ref!=null) +
            ", _isGlobal=" + _isGlobal +
            ", _isOptional=" + _isOptional +
            "}";
}