Spring-data-couchbase-运行更新查询

Question

Is any possibility to execute N1QL update query using spring-data?

Ie I have following update query:

"UPDATE USERS USE KEYS $id SET location = $location"

I tried to use couchbaseTemplate.queryN1QL method, but it doesn't work.

Is there any solution of this problem using spring data or even native couchbase java SDK?

Answer 1

the CouchbaseTemplate is more tailored towards Spring Data document's use case, so it expects to run queries that return specific elements and will end up unmarshalled into entities (eg. a User object).

if you want to run a more freeform query, like your update, you can always access the native SDK from the template. In your case:

String paStatement = "UPDATE USERS USE KEYS $id SET location = $location";
JsonObject paramValues = JsonObject.create().put("id", theId).put("location", "theLocation");
N1qlQuery query = N1qlQuery.parametrized(paStatement, paramValues);
template.getCouchbaseBucket().query(query);

Answer 2

I think you can add RETURNING * at the end of your UPDATE statement. It would make the statement returns something. It works for me.