update xattr in meta in couchbase sdk 3.4.0 with java

Question

I want to update xattr in meta of a document. I didnt find any document provided by couchbase.

{
  "meta": {
    "id": "0000c84b-e2bc-43ac-af51-7cf141777f49",
    "rev": "102-163756db3f7100000000000002000000",
    "expiration": 0,
    "flags": 33554432,
    "type": "json"
  },
  "xattrs": {}
}

Can anyone help me.

Answer 1

To update XATTR, use the Sub-Document API. Here's an example from the Couchbase Java documentation:

JsonObject docContent = JsonObject.create().put("body", "value");
collection.mutateIn("hotel_14006",
    Arrays.asList(MutateInSpec.upsert("foo", "bar").xattr().createPath(), MutateInSpec.replace("", docContent)));

Notice the use of .xattr().

Note that XATTR's generally should only be used for framework/library metadata, and are not meant for use in general applications. XATTRs may not be accessible by all Couchbase services (Search, for example).