Update sub-document or attributes with query

Hi, I’m trying to update some attributes with a custom query, but I get the following exception :

exception

com.couchbase.client.core.error.InvalidArgumentException: Unsupported type for JSON value: class com.rbleuse.spring.reactive.couchbase.model.Person
	at com.couchbase.client.core.error.InvalidArgumentException.fromMessage(InvalidArgumentException.java:28) ~[core-io-2.3.4.jar:na]
	Suppressed: reactor.core.publisher.FluxOnAssembly$OnAssemblyException: 
Error has been observed at the following site(s):
	*__checkpoint ⇢ org.springframework.boot.actuate.metrics.web.reactive.server.MetricsWebFilter [DefaultWebFilterChain]
	*__checkpoint ⇢ HTTP PUT "/classroom" [ExceptionHandlingWebHandler]
Original Stack Trace:
		at com.couchbase.client.core.error.InvalidArgumentException.fromMessage(InvalidArgumentException.java:28) ~[core-io-2.3.4.jar:na]
		at com.couchbase.client.java.json.JsonValue.coerce(JsonValue.java:94) ~[java-client-3.3.4.jar:na]
		at com.couchbase.client.java.json.JsonArray.add(JsonArray.java:178) ~[java-client-3.3.4.jar:na]
		at org.springframework.data.couchbase.repository.query.StringBasedN1qlQueryParser.putPositionalValue(StringBasedN1qlQueryParser.java:495) ~[spring-data-couchbase-4.4.3.jar:4.4.3]
		at org.springframework.data.couchbase.repository.query.StringBasedN1qlQueryParser.getPositionalPlaceholderValues(StringBasedN1qlQueryParser.java:437) ~[spring-data-couchbase-4.4.3.jar:4.4.3]
		at org.springframework.data.couchbase.repository.query.StringBasedN1qlQueryParser.getPlaceholderValues(StringBasedN1qlQueryParser.java:486) ~[spring-data-couchbase-4.4.3.jar:4.4.3]
		at org.springframework.data.couchbase.core.query.StringQuery.toN1qlSelectString(StringQuery.java:80) ~[spring-data-couchbase-4.4.3.jar:4.4.3]

Here is my document :

@Document
@Scope("dev")
@Collection("classroom")
data class Classroom(
    @field:Id
    val id: String,

    @field:Field
    val person: Person,

    @field:Field
    val roomNumber: String
)

Here is my Person :

data class Person(
    @field:Field
    val firstName: String,

    @field:Field
    val lastName: String
)

And here is my query :

@Query("""
        UPDATE #{#n1ql.bucket} c
        USE KEYS $1 SET
        c.person = $2
        WHERE c.#{#n1ql.filter}""")
    fun updateClassroom(id: String, person: Person)

It seems that the sdk requires a json object, so the only workaround I can think of is converting my Person with the MappingCouchbaseConverter.write(source, target) which will convert with correct field names and types. But this is an ugly solution, as the converter requires an id attribute else it’ll throw An ID property is needed, but not found

• Is that possible to update some of my document attributes without manually convert my parameters ?
• Is there any other elegant solution ?

[mikereiche]

The enhancement would be to handle arbitrary (entity) objects as parameters, convert them to json using

Edit: this is actually an omission in parameter handling. It needs to handle not only simple types, but also collections and non-Simple types (like Person).

[mikereiche]

The change also includes a fix to handle lists of non-simple types (original would give NPE for non-simple lists for both named and ordered parameters).