package org.hibernate.bugs;

import java.util.HashMap;
import java.util.Map;
import java.util.Objects;
import java.util.Optional;
import javax.persistence.ElementCollection;
import javax.persistence.Entity;
import javax.persistence.Id;
import org.hibernate.annotations.LazyCollection;
import org.hibernate.annotations.LazyCollectionOption;

@Entity
public class Product {
  @Id
  private String name;

  @ElementCollection
  @LazyCollection(LazyCollectionOption.EXTRA)
  private Map<String, Price> prices = new HashMap<>();

  Product() {}

  public Product(String name) {
    this.name = name;
  }

  public void setPrice(String country, long cents) {
    Price price = prices.computeIfAbsent(country, it -> new Price());
    price.setCents(cents);
  }

  public Long getPrice(String country) {
    return Optional.ofNullable(prices.get(country)).map(it -> it.getCents()).orElse(null);
  }

  @Override
  public int hashCode() {
    return Objects.hash(name, prices);
  }

  @Override
  public boolean equals(Object obj) {
    if (this == obj) {
      return true;
    }
    if (obj == null) {
      return false;
    }
    if (getClass() != obj.getClass()) {
      return false;
    }
    Product other = (Product) obj;
    return Objects.equals(name, other.name) && Objects.equals(prices, other.prices);
  }

  @Override
  public String toString() {
    StringBuilder builder = new StringBuilder();
    builder.append("Product [name=");
    builder.append(name);
    builder.append(", prices=");
    builder.append(prices);
    builder.append("]");
    return builder.toString();
  }
}

package org.hibernate.bugs;

import java.util.Objects;
import javax.persistence.Column;
import javax.persistence.Embeddable;

@Embeddable
public class Price {
  @Column
  private long cents;

  Price() {}

  public Price(long cents) {
    this.cents = cents;
  }

  public long getCents() {
    return cents;
  }

  public void setCents(long cents) {
    this.cents = cents;
  }

  @Override
  public int hashCode() {
    return Objects.hash(cents);
  }

  @Override
  public boolean equals(Object obj) {
    if (this == obj) {
      return true;
    }
    if (obj == null) {
      return false;
    }
    if (getClass() != obj.getClass()) {
      return false;
    }
    Price other = (Price) obj;
    return cents == other.cents;
  }

  @Override
  public String toString() {
    StringBuilder builder = new StringBuilder();
    builder.append("Price [cents=");
    builder.append(cents);
    builder.append("]");
    return builder.toString();
  }
}