Jadira – My Shitty Code https://myshittycode.com Embracing the Messiness in Search of Epic Solutions Fri, 06 Jan 2023 17:18:20 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.1 https://myshittycode.com/wp-content/uploads/2022/04/cropped-icon-32x32.png Jadira – My Shitty Code https://myshittycode.com 32 32 205304208 Jadira Usertype: Under JDK 6 it may not be possible to handle DST transitions correctly https://myshittycode.com/2013/12/26/jadira-usertype-under-jdk-6-it-may-not-be-possible-to-handle-dst-transitions-correctly/ https://myshittycode.com/2013/12/26/jadira-usertype-under-jdk-6-it-may-not-be-possible-to-handle-dst-transitions-correctly/#respond Thu, 26 Dec 2013 14:51:54 +0000 http://myshittycode.com/?p=277 PROBLEM When saving a Hibernate entity that contains Joda Time object, Jadira UserType throws the following warning:- This warning occurs when using this version:- SOLUTION Upgrade Jadira Usertype to the latest version, and the problem goes away:-

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]]> PROBLEM

When saving a Hibernate entity that contains Joda Time object, Jadira UserType throws the following warning:-

[WARN ] [JavaTimeZoneWorkaroundHelper] [<clinit>:40] - Under JDK 6 it may not be possible
to handle DST transitions correctly
[ERROR] [JavaTimeZoneWorkaroundHelper] [<clinit>:42] - Running under a Zone that uses
daylight saving time. To avoid incorrect datetimes being stored during DST transition,
either update to JDK 7 or use a Timezone for the JDK without Daylight Saving Time

This warning occurs when using this version:-

<dependency>
    <groupId>org.jadira.usertype</groupId>
    <artifactId>usertype.core</artifactId>
    <version>3.0.0.GA</version>
</dependency>

SOLUTION

Upgrade Jadira Usertype to the latest version, and the problem goes away:-

<dependency>
    <groupId>org.jadira.usertype</groupId>
    <artifactId>usertype.core</artifactId>
    <version>3.1.0.CR10</version>
</dependency>

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]]> https://myshittycode.com/2013/12/26/jadira-usertype-under-jdk-6-it-may-not-be-possible-to-handle-dst-transitions-correctly/feed/ 0 277 Hibernate + Joda Time: Auto Registering Type https://myshittycode.com/2013/12/25/hibernate-joda-time-auto-registering-type/ https://myshittycode.com/2013/12/25/hibernate-joda-time-auto-registering-type/#comments Thu, 26 Dec 2013 01:30:19 +0000 http://myshittycode.com/?p=274 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:- 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 […]

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]]> 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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