Persist Joda Datetime with Eclipselink

We have to create an encoder

import java.sql.Timestamp;

import org.eclipse.persistence.mappings.DatabaseMapping;
import org.eclipse.persistence.mappings.converters.Converter;
import org.eclipse.persistence.sessions.Session;
import org.joda.time.DateTime;

public class JodaDateTimeConverter implements Converter {

 private static final long serialVersionUID = 1L;

 @Override
 public Object convertDataValueToObjectValue(Object dataValue, Session session) {
  return dataValue == null ? null : new DateTime((Timestamp) dataValue);
 }

 @Override
 public Object convertObjectValueToDataValue(Object objectValue, Session session) {
  return objectValue == null ? null : new Timestamp(((DateTime) objectValue).getMillis());
 }

 @Override
 public void initialize(DatabaseMapping mapping, Session session) {
 }

 @Override
 public boolean isMutable() {
  return false;
 }

}

Then the encoder can be used to annotate the fields:

import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@NoArgsConstructor
@Entity
public class DateToRemember {

 @Id
 @GeneratedValue(strategy = GenerationType.TABLE)
 private int   id;

 @Column(columnDefinition = "TIMESTAMP")
 @Converter(name = "dateTimeConverter", converterClass = net.xan.taskstack.JodaDateTimeConverter.class)
 @Convert("dateTimeConverter")
 private DateTime date;
}

Or the classic version:

@Entity
public class DateToRemember {

 @Id
 @GeneratedValue(strategy = GenerationType.TABLE)
 private int   id;

 @Column(columnDefinition = "TIMESTAMP")
 @Converter(name = "dateTimeConverter", converterClass = net.xan.taskstack.JodaDateTimeConverter.class)
 @Convert("dateTimeConverter")
 private DateTime date;

 public int getId(){return id;}
 public DateTime getDate(){return date;}
 public void setId(int id ){ this.id = id;}
 public void setDate(DateTime date ){ this.date = date;}

 public DateToRemember(){}
}