CODEWITHSUNDEEP
javahibernatespring-data-jparepositoryconverters
Joel George
Joel George

Reputation: 72

@Convert is not getting called for the respository.save

I am trying to format the datetime by using @Convert(converter = MyConverter.class). This is working as expected while saving and data is properly saved in the DB.

The issue I am facing is the object that's being returned while responseEntity = myrepository.save(myEntity) is not having the formated date. The field in the responseEntity is still returning old format. Am I missing anything?

My converter class:

   public class DateTimeConverter implements 
    AttributeConverter<LocalDateTime, String> {

    @Override
    public String convertToDatabaseColumn(LocalDateTime attribute) {
        if(Objects.isNull(attribute)) {
            return null;
        }
        attribute =  attribute.atZone(ZoneId.systemDefault()).withZoneSameInstant(ZoneOffset.UTC).toLocalDateTime();

        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
        return attribute.format(formatter);
    }

    @Override
    public LocalDateTime convertToEntityAttribute(String dbData) {
        if(Objects.isNull(dbData)) {
            return null;
        }
        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
        return LocalDateTime.parse(dbData, formatter);
    }
}

Upvotes: 2

Views: 1840

Answers (2)

Gary
Gary

Reputation: 115

Ran into a similar problem and discovered that the attribute conversion wasn't done by save() but it was done by saveAndFlush(). Breakpoints within the conversion weren't hit during save() but were by saveAndFlush(). If save() was used the conversion was hit on a subsequent find... query. This was also an issue if save should have thrown an exception as it got delayed until flush or subsequent query.

Upvotes: 1

Eklavya
Eklavya

Reputation: 18480

repository.save() does return the converted value, entity value converted before flush time. It only attached to the persistence context. But you want converted value using convertToEntityAttribute. convertToEntityAttribute only called when you fetch from the database.

Do this operation in service 

entity.setProperty(entity.getProperty().atZone(ZoneId.systemDefault()).withZoneSameInstant(ZoneOffset.UTC).toLocalDateTime());

Upvotes: 0

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