@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (!(obj instanceof ClassAce))
			return false;
		ClassAce other = (ClassAce) obj;
		if (canonicalTypeName == null) {
			if (other.canonicalTypeName != null)
				return false;
		} else if (!canonicalTypeName.equals(other.canonicalTypeName))
			return false;
		if (user_id == null) {
			if (other.user_id != null)
				return false;
		} else if (!user_id.equals(other.user_id))
			return false;
		return true;
	}