JPA Attribute Converter for java.time.LocalDateTime to java.sql.Instant

LocalDateTimePersistenceConverter.java

package com.github.gist.codecitizen.jpa.converters;

import javax.persistence.AttributeConverter;
import javax.persistence.Converter;
import java.sql.Timestamp;
import java.time.LocalDateTime;

/**
 * Maps {@link java.time.LocalDateTime} entity attributes to {@link java.sql.Timestamp} values
 * so a temporal value instead of {@code bytea} is written to the database.
 *
 * @author codecitizen (Github)
 */
@SuppressWarnings(value = "unused")
@Converter(autoApply = true)
public class LocalDateTimePersistenceConverter implements AttributeConverter<LocalDateTime, Timestamp> {
    @Override
    public Timestamp convertToDatabaseColumn(LocalDateTime attribute) {
        return (attribute == null)? null : Timestamp.valueOf(attribute);
    }

    @Override
    public LocalDateTime convertToEntityAttribute(Timestamp dbData) {
        return (dbData == null) ? null : dbData.toLocalDateTime();
    }
}