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kotlin data class can not be decoded

See original GitHub issue

data class ShipDetail(
    var _id: String? = null,
    var order_id: String? = null)

val collection = database.getCollection<ShipDetail>("ship_detail")
var r = collection.findOne();

produce exception:

Exception in thread “main” org.bson.codecs.configuration.CodecConfigurationException: Can’t find a codec for class ShipDetail. at org.bson.codecs.configuration.CodecCache.getOrThrow(CodecCache.java:46) at org.bson.codecs.configuration.ProvidersCodecRegistry.get(ProvidersCodecRegistry.java:63) at org.bson.codecs.configuration.ProvidersCodecRegistry.get(ProvidersCodecRegistry.java:37) at com.mongodb.FindIterableImpl.createQueryOperation(FindIterableImpl.java:228) at com.mongodb.FindIterableImpl.execute(FindIterableImpl.java:224) at com.mongodb.FindIterableImpl.first(FindIterableImpl.java:205) at org.litote.kmongo.ExtensionsKt.findOne(extensions.kt:163) at org.litote.kmongo.ExtensionsKt.findOne$default(extensions.kt:162)

Issue Analytics

State:
Created 6 years ago
Comments:9 (1 by maintainers)

Top GitHub Comments

1reaction

vsct-jburetcommented, Nov 28, 2017

@frzleaf Replace the line val client = MongoClient(MongoClientURI(“mongodb://root:secret$@localhost:27017/ship_info”)) with val client = KMongo.createClient(MongoClientURI(“mongodb://root:secret$@localhost:27017/ship_info”)) and it should work

0reactions

frzleafcommented, Nov 28, 2017

Thank you so much, it worked 😄

MongoClient object must be created by KMongo with codecRegistry = DEFAULT_CODEC_REGISTRY