title: org.hibernate.type.SerializationException: could not deserialize
body: <p>I'm using two tables by Hibernate and
  I dont understand why for particular query I have this problem.
  I hope someone recognizes the problem.</p>
  
  <p>I have a table user </p>
  
  <pre><code>@Entity
  @Table(name="user")
  public class User implements Serializable {
  private static final long serialVersionUID = 1L;
  private Long idUser;
  private Area area;
  
  //...other get and setter
  
  @OneToOne(fetch=FetchType.EAGER)
  @JoinColumn(name="idarea")
  public Area getArea() {
  return area;
  }
  }
  </code></pre>
  
  <p>and a table area</p>
  
  <pre><code>@Entity
  @Table(name = "area")
  public class Area implements Serializable {
  private static final long serialVersionUID = 1L;
  
  @Id @GeneratedValue(strategy=GenerationType.AUTO)
  @Column(name="idarea")
  private Long idArea;
  
  @Column(name="area_name")
  private String areaName;
  
  @Column(name="time_start")
  private LocalTime timeStart;
  
  //...other get and setter
  
  }
  </code></pre>
  
  <p>LOGS says:</p>
  
  <pre><code>15:27:28,140  INFO DefaultLoadEventListener:160 - Error performing load command
  org.hibernate.type.SerializationException: could not deserialize
  at org.hibernate.util.SerializationHelper.doDeserialize(SerializationHelper.java:262)
  at org.hibernate.util.SerializationHelper.deserialize(SerializationHelper.java:306)
  at org.hibernate.type.descriptor.java.SerializableTypeDescriptor.fromBytes(SerializableTypeDescriptor.java:130)
  at org.hibernate.type.descriptor.java.SerializableTypeDescriptor.wrap(SerializableTypeDescriptor.java:116)
  at 
  ....//other lines
  org.springframework.orm.hibernate3.HibernateSystemException: could not deserialize; nested exception is org.hibernate.type.SerializationException: could not deserialize
  </code></pre>