Cloud.java

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

import lombok.Getter;
import lombok.Setter;
import org.hibernate.annotations.CacheConcurrencyStrategy;
import org.hibernate.annotations.DynamicInsert;
import org.hibernate.annotations.DynamicUpdate;
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;

/**
 * org.hibernate.examples.mapping.associations.unidirectional.Cloud
 *
 * @author 배성혁 sunghyouk.bae@gmail.com
 * @since 2013. 11. 29. 오후 3:59
 */
@Entity
@org.hibernate.annotations.Cache(region = "example", usage = CacheConcurrencyStrategy.READ_WRITE)
@DynamicInsert
@DynamicUpdate
@Getter
@Setter
public class Cloud extends AbstractHibernateEntity<Long> {

  @Id
  @GeneratedValue(strategy = GenerationType.IDENTITY)
  private Long id;

  private String type;

  private Double length;

  @OneToMany(cascade = {CascadeType.ALL})
  @JoinTable
  private Set<SnowFlake> producedSnowFlakes = new HashSet<SnowFlake>();

  @Override
  public int hashCode() {
    return HashTool.compute(type, length);
  }

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

  private static final long serialVersionUID = 8894797675268174082L;
}