OVERVIEW
Jadira Usertype is required when using Joda Time with Hibernate 4. The Joda Time objects are annotated accordingly in the Hibernate entity, and they looks something like this:-
@Entity
@Table(name = "person")
public class Person implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name = "personId")
private Long id;
@Column
private String name;
@Column
@Type(type = "org.jadira.usertype.dateandtime.joda.PersistentLocalDate")
private LocalDate birthDate;
@Column
@Type(type = "org.jadira.usertype.dateandtime.joda.PersistentLocalDateTime")
private LocalDateTime createdDatetime;
// getters and setters
}
PROBLEM
This solution works, but it is rather tedious because I can never remember the actual @Type to write, thus I always end up copying and pasting it from past project code.
Further, that additional annotations clutter up my otherwise beautiful code.
SOLUTION
Jadira Usertype provides a clean way to auto register these Joda Time object types.
In the Hibernate configuration, add the following line:-
<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.SQLServerDialect</prop>
<prop key="hibernate.show_sql">false</prop>
<prop key="jadira.usertype.autoRegisterUserTypes">true</prop>
</props>
</property>
<property name="packagesToScan">
<list>
<value>com.choonchernlim.project.entity</value>
</list>
</property>
</bean>
Now all @Type annotations can be safely removed from the Hibernate entity:-
@Entity
@Table(name = "person")
public class Person implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name = "personId")
private Long id;
@Column
private String name;
@Column
private LocalDate birthDate;
@Column
private LocalDateTime createdDatetime;
// getters and setters
}
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