public class MonetaryAmountUserType implements UserType {

	public Object assemble(Serializable cached, Object owner)
			throws HibernateException {
		return cached;
	}

	public Object deepCopy(Object value) throws HibernateException {
		return value;
	}

	public Serializable disassemble(Object value) throws HibernateException {
		return (Serializable) value;
	}

	public boolean equals(Object x, Object y) throws HibernateException {
		if (x == y)
			return true;
		if (x == null || y == null)
			return false;
		return x.equals(y);
	}

	public int hashCode(Object x) throws HibernateException {
		return x.hashCode();
	}

	public boolean isMutable() {
		return false;
	}

	public Object nullSafeGet(ResultSet resultSet, String[] names, Object owner)
			throws HibernateException, SQLException {

		BigDecimal valueInUSD = resultSet.getBigDecimal(names[0]);
		if (resultSet.wasNull())
			return null;

		// DB에서 가져온 다음에 원하는 값으로 캐스팅 해서 반환.

		return null;
	}

	public void nullSafeSet(PreparedStatement statement, Object value, int index)
			throws HibernateException, SQLException {
		
		// SQL을 DB에 보내기 전에 statement의 특정 위치에 들어갈 값을 변경한다.

	}

	public Object replace(Object original, Object target, Object owner)
			throws HibernateException {
		return original;
	}

	public Class returnedClass() {
		return MonetaryAmount.class;
	}

	public int[] sqlTypes() {
		return new int[] { Hibernate.BIG_DECIMAL.sqlType() };
	}

}

@org.hibernate.annotations.Type(
    type = " persistence.MonetaryAmountUserType"
)
@Column(name = "INITIAL_PRICE")
private MonetaryAmount initialPrice;