BankAccount.java

package org.hibernate.examples.mapping.associations.manytomany;

import lombok.AccessLevel;
import lombok.Getter;
import lombok.Setter;
import org.hibernate.annotations.CacheConcurrencyStrategy;
import org.hibernate.examples.model.AbstractHibernateEntity;
import org.hibernate.examples.utils.HashTool;
import org.hibernate.examples.utils.ToStringHelper;

import javax.persistence.*;
import java.util.HashSet;
import java.util.Set;

/**
 * 은행 계좌
 *
 * @author 배성혁 sunghyouk.bae@gmail.com
 * @since 2013. 11. 28. 오후 11:45
 */
@Entity
@org.hibernate.annotations.Cache(region = "example", usage = CacheConcurrencyStrategy.READ_WRITE)
@Getter
@Setter
public class BankAccount extends AbstractHibernateEntity<Long> {

  @Id
  @GeneratedValue(strategy = GenerationType.IDENTITY)
  @Column(name = "accountId")
  @Setter(AccessLevel.PROTECTED)
  private Long id;

  /**
   * 은행 계좌 번호
   */
  @Column(length = 32)
  private String accountNumber;

  /**
   * 은행 계정은 소유자가 여러명이 된다.
   */
  // many-to-many 에서는 둘 중 하나는 mappedBy 를 지정해야 한다. ( hbm에서는 inverse )
  @ManyToMany(mappedBy = "bankAccounts", cascade = {CascadeType.REFRESH})
  private Set<AccountOwner> owners = new HashSet<AccountOwner>();

  @Override
  public int hashCode() {
    return HashTool.compute(accountNumber);
  }

  @Override
  public ToStringHelper buildStringHelper() {
    return super.buildStringHelper()
        .add("accountNumber", accountNumber);
  }

  private static final long serialVersionUID = -4101571945249649442L;
}