ZonedDateTime with MongoDB
Solution 1
Looks like Spring has support for all the java time converter except ZonedDateTime
converter. You can register one as follows.
@Bean
public CustomConversions customConversions(){
List<Converter<?,?>> converters = new ArrayList<>();
converters.add(new DateToZonedDateTimeConverter());
converters.add(new ZonedDateTimeToDateConverter());
return new CustomConversions(converters);
}
@Bean
public MongoTemplate getMongoTemplate() throws UnknownHostException {
MappingMongoConverter converter = new MappingMongoConverter(
new DefaultDbRefResolver(getMongoDbFactory()), new MongoMappingContext());
converter.setCustomConversions(customConversions());
converter.afterPropertiesSet();
return new MongoTemplate(getMongoDbFactory(), converter);
}
class DateToZonedDateTimeConverter implements Converter<Date, ZonedDateTime> {
@Override
public ZonedDateTime convert(Date source) {
return source == null ? null : ofInstant(source.toInstant(), systemDefault());
}
}
class ZonedDateTimeToDateConverter implements Converter<ZonedDateTime, Date> {
@Override
public Date convert(ZonedDateTime source) {
return source == null ? null : Date.from(source.toInstant());
}
}
One other alternative solution would be to just use the ZonedDateTime and change it to date while persisting into MongoDB. You can easily change it back from date back to Zoned Date Time while fetching.
Below are the relavant methods to help with conversions.
ZoneId zoneID = ZoneId.of("America/Chicago");
From ZonedDateTime to java util date.
Instant instant = Instant.now();
ZonedDateTime zonedDateTime = instant.atZone(zoneId);
Date date = Date.from(zdt.toInstant());
From Date to ZonedDateTime
Instant instant = date.toInstant();
ZonedDateTime zonedDateTime = instant.atZone(zoneId);
The other alternative is to implement custom codec to help with conversions. I've created one for YearMonth at Filtering YearMonth from Mongo document. I'll leave it as exercise to the reader if they want to create custom codec for Zoned Date Time.
You can use below library for codec based approach.
https://github.com/ylemoigne/mongo-jackson-codec
Solution 2
After spending way too much time debugging this, I finally found a working solution for latest version of spring boot / spring data. This is currently working for me on Spring Boot 2.0.0.M7.
With the accepted answer from veeram, I was getting Couldn't find PersistentEntity for type
I hope this helps someone avoid going down the rabbit hole.
@Configuration
public class MongoConfiguration {
@Bean
public MongoCustomConversions customConversions(){
List<Converter<?,?>> converters = new ArrayList<>();
converters.add(DateToZonedDateTimeConverter.INSTANCE);
converters.add( ZonedDateTimeToDateConverter.INSTANCE);
return new MongoCustomConversions(converters);
}
enum DateToZonedDateTimeConverter implements Converter<Date, ZonedDateTime> {
INSTANCE;
@Override
public ZonedDateTime convert(Date source) {
return ofInstant(source.toInstant(), systemDefault());
}
}
enum ZonedDateTimeToDateConverter implements Converter<ZonedDateTime, Date> {
INSTANCE;
@Override
public Date convert(ZonedDateTime source) {
return Date.from(source.toInstant());
}
}
}
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Gurkha
Updated on September 15, 2022Comments
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Gurkha over 1 year
Trying to use
ZonedDateTime
withMongoDB
. I'm able to saveZonedDateTime
inMongoDB
but when i look at the record it has so much unnecessary stuffs in there:> "timestamp" : { > "dateTime" : ISODate("2016-12-13T13:45:53.991Z"), > "offset" : { > "_id" : "-05:00", > "totalSeconds" : -18000 > }, > "zone" : { > "_class" : "java.time.ZoneRegion", > "_id" : "America/New_York", > "rules" : { > "standardTransitions" : [ > NumberLong(-2717650800) > ], > "standardOffsets" : [ > { > "_id" : "-04:56:02", > "totalSeconds" : -17762 > }, > { > "_id" : "-05:00", > "totalSeconds" : -18000 > } > ], > "savingsInstantTransitions" : [ > NumberLong(-2717650800), > NumberLong(-1633280400), > NumberLong(-1615140000), > NumberLong(-1601830800), > NumberLong(-1583690400), > NumberLong(-1570381200), > and so on....
Also when i try to retrieve this same date, it gives me following:
> org.springframework.data.mapping.model.MappingException: No property > null found on entity class java.time.ZonedDateTime to bind constructor > parameter to!
I didn't have this problem when working with
LocalDateTime
. First question is can we change some settings somewhere that will only persistISODate
withZonedDateTime
? Second question, is there something likeJsr310JpaConverters
formongodb
?UPDATE: Referencing the following questionaire I created custom converters and registered them,however, the issue still persists. Spring Data MongoDB with Java 8 LocalDate MappingException
public class ZonedDateTimeToLocalDateTimeConverter implements Converter<ZonedDateTime, LocalDateTime> { @Override public LocalDateTime convert(ZonedDateTime source) { return source == null ? null : LocalDateTime.ofInstant(source.toInstant(), ZoneId .systemDefault()); } }
And
public class LocalDateTimeToZonedDateTimeConverter implements Converter<LocalDateTime, ZonedDateTime> { @Override public ZonedDateTime convert(LocalDateTime source) { return source == null ? null : ZonedDateTime.of(source, ZoneId.systemDefault()); } }
Registered them as follows:
@Bean public CustomConversions customConversions(){ List<Converter<?,?>> converters = new ArrayList<Converter<?,?>>(); converters.add(new ZonedDateTimeToLocalDateTimeConverter()); converters.add(new LocalDateTimeToZonedDateTimeConverter()); return new CustomConversions(converters); } @Bean public MongoTemplate getMongoTemplate() throws UnknownHostException { MappingMongoConverter converter = new MappingMongoConverter( new DefaultDbRefResolver(getMongoDbFactory()), new MongoMappingContext()); converter.setCustomConversions(customConversions()); converter.afterPropertiesSet(); return new MongoTemplate(getMongoDbFactory(), converter); }
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Gurkha over 7 yearsSagar, looks like we posted at the exact same time, there was an article which i followed which is exactly what u posted. take a look. thanks for your effort though. Will upvote for ur effort.
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s7vr over 7 yearsoh I just realised that too. Can you please try my version and let me know ? The trick is to convert to ZonedDateTime to date not LocalDateTime and vice versa.
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Gurkha over 7 yearsOkay, lemme try that.
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Gurkha over 7 yearsIt works for ZonedDateTime to Date but with my mongo template config, your template approach game me 'unsupported converter' exception. Could you update your answer with my template, I will mark it as correct.
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s7vr over 7 yearsSorry accidentally remove my previous comment. Np.
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Thom about 6 yearsI believe the two @Bean entries go in my Application class, right?
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s7vr about 6 years@Thom Yes should go in Application config class.
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RJ.Hwang about 6 yearsYour solution fixed my problem. Spring Boot 2.0.0.M7 can use
@Bean public CustomConversions customConversions(){...}
. But when I upgrade to Spring Boot 2.0.1.RELEASE, this not work. Need to use@Bean public MongoCustomConversions customConversions(){...}
. I wasted a lot of time on it. -
Nagaraja JB over 4 yearsI am working on a Spring boot application with Spring data. Is there a way to pass timezone offset from the request and get the date fields converted to corresponding time zone?