Versioned HQL update might issue incorrect SQL

When executing a versioned HQL update, the version column (java.util.Calendar) is updated using 'updated=updated+1'. Some MySQL versions will throw an exception whenever the incremented value ended with 59. For instance, if the previous version value was '2010-03-12 13:00:59', then MySQL will throw an exception as the incremented value would be '2010-03-12 13:00:60' (see http://dev.mysql.com/doc/refman/5.0/en/time-zone-leap-seconds.html for more on this).

In this case, Hibernate would throw the exception 'SEVERE: Data truncation: Incorrect datetime value: '20100302130060.000000' for column 'updated' at row 1'.

I've received feedback on this issue through the Hibernate forum which indicates that this might be a bug (https://forum.hibernate.org/viewtopic.php?f=1&t=1006238)

•  

  • Entity.hbm.xml **

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<class name="com.tracker.robot.db.entities.Entity" table="track">
<id column="id" length="36" name="id" type="java.lang.String" />
<version column="updated" name="updated" type="java.util.Calendar" unsaved-value="null" />
<property column="title" length="255" name="title" type="java.lang.String"/>

</class>
</hibernate-mapping>

•  

  • Entity.java **

import java.util.Calendar;

public class Entity {

private String id;
private String title;
private Calendar updated;

public Entity() {

}

public String getId() {
return id;
}

public void setId(String id) {
this.id = id;
}

public String getTitle() {
return title;
}

public void setTitle(String title) {
this.title = title;
}

public Calendar getUpdated() {
return updated;
}

public void setUpdated(Calendar updated) {
this.updated = updated;
}
}

•  

  • TestCode **

currentSession.beginTransaction();
Query q = currentSession.createQuery("update versioned Entity e set e.title = :title where e.id = :id");
q.setString("title", "TEST");
q.setString("id", "000059e4-8b71-41c1-81f2-5cacabba5554");
q.executeUpdate();
currentSession.getTransaction().rollback();