juplo.de Git - jpa-converters/blob - src/main/java/de/juplo/jpa/converters/ZonedDateTimeConverter.java

   1 package de.juplo.jpa.converters;
   2
   3 import java.time.ZonedDateTime;
   4 import java.util.GregorianCalendar;
   5 import javax.persistence.AttributeConverter;
   6 import javax.persistence.Converter;
   7
   8
   9 /**
  10  * Converts a {@link ZonedDateTime} to a {@link GregorianCalendar}, as suggested
  11  * in the official Java 8 Time tutorial.
  12  * <p>
  13  * The {@link GregorianCalendar} can then be persisted as
  14  * {@link java.persistene.TemporalType.TIMESTAMP} with the help of the
  15  * {@link java.persist.Tmporal}-annotation.
  16  * @see https://docs.oracle.com/javase/tutorial/datetime/iso/legacy.html
  17  * @author Kai Moritz
  18  */
  19 @Converter(autoApply = true)
  20 public class ZonedDateTimeConverter implements AttributeConverter<ZonedDateTime, GregorianCalendar>
  21 {
  22   @Override
  23   public GregorianCalendar convertToDatabaseColumn(ZonedDateTime zdt)
  24   {
  25     return GregorianCalendar.from(zdt);
  26   }
  27
  28   @Override
  29   public ZonedDateTime convertToEntityAttribute(GregorianCalendar calendar)
  30   {
  31     return calendar.toZonedDateTime();
  32   }
  33 }