AttributeConverter로 적용하는 필드에 대해 그룹함수 적용은 어떤 방식으로 해야할까요?

안녕하십니까 집합 함수 적용에 관해 궁금한 점이 있어서 질문 드립니다.

아래와 같이 AttributeConverter 적용 필드의 경우에는 QueryDSL로 집합함수 적용이 가능한 방법이 있는지 궁금합니다.

public class Product {
	public enum ProductStatus { PROCEEDING, SOLD_OUT;}

	@Id
	@GeneratedValue(strategy = GenerationType.IDENTITY)
	@Column(name = "PRODUCT_ID")
	private Long id;

	@Column(name = "TITLE")
	private String title;

	@Column(name = "PRICE")
	private Money price;
}

public class Money {
	public static final Money ZERO = Money.wons(0);

	private final BigDecimal amount;

	public static Money wons(long amount) {
		return new Money(BigDecimal.valueOf(amount));
	}

	public static Money wons(double amount) {
		return new Money(BigDecimal.valueOf(amount));
	}

	public static <T> Money sum(Collection<T> bags, Function<T, Money> monetary) {
		return bags.stream().map(bag -> monetary.apply(bag)).reduce(Money.ZERO, Money::plus);
	}

	Money(BigDecimal amount) {
		this.amount = amount;
	}

	public Money plus(Money amount) {
		return new Money(this.amount.add(amount.amount));
	}

	public Money minus(Money amount) {
		return new Money(this.amount.subtract(amount.amount));
	}

	public Money times(double percent) {
		return new Money(this.amount.multiply(BigDecimal.valueOf(percent)));
	}

	public Money divide(double divisor) {
		return new Money(amount.divide(BigDecimal.valueOf(divisor)));
	}

	public boolean isLessThan(Money other) {
		return amount.compareTo(other.amount) < 0;
	}

	public boolean isGreaterThan(Money other) {
		return amount.compareTo(other.amount) > 0;
	}

	public BigDecimal getAmount() {
		return amount;
	}

	public Long longValue() {
		return amount.longValue();
	}

	public Double doubleValue() {
		return amount.doubleValue();
	}

	public boolean equals(Object object) {
		if (this == object) {
			return true;
		}

		if (!(object instanceof Money)) {
			return false;
		}

		Money other = (Money)object;
		return Objects.equals(amount.doubleValue(), other.amount.doubleValue());
	}

	public int hashCode() {
		return Objects.hashCode(amount);
	}

	public String toString() {
		return amount.toString() + "원";
	}
}

@Converter(autoApply = true)
public class MoneyConverter implements AttributeConverter<Money, Long> {
	@Override
	public Long convertToDatabaseColumn(Money money) {
		return money.getAmount().longValue();
	}

	@Override
	public Money convertToEntityAttribute(Long amount) {
		return Money.wons(amount);
	}
}