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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