Couchbase N1QL Java SDK Pagination and Sorting issue - couchbase

Question

I have started using couchbase recently. I am using Spring-Data couchbase for inserting Java POJOs in Couchbase. Since, Pagination and Sorting is not supported by Spring Data Couchbase project, I have tried to use couchbase java client 2.2.0-dp2.
I have inserted 8 users where ids ranging from 1 to 8.
I have wrote following code to apply pagination and sorting.
public void test() {
int offset = 5 * (1 - 1);
Statement statement = select("*").from("test").where(x("_class").eq(s("com.test.rest.entity.User"))).orderBy(Sort.asc("id")).limit(5).offset(offset);
log.info(statement.toString());
Iterator<QueryRow> result = bucket.query(Query.simple(statement)).rows();
while(result.hasNext()) {
QueryRow doc = result.next();
log.info("Document:: " + doc.value());
}
}
However, I am seeing result as below. It should be test1 to test5, though users being selected randomly. Can someone help me with that?
Document:: {“test":{"createdAt":1.443420400374E12,"firstname":"test5","_class":"com.test.rest.entity.User","type":"User","lastname":"test5"}}
Document:: {“test":{"createdAt":1.443420708495E12,"firstname":"test8","_class":"com.test.rest.entity.User","type":"User","lastname":"test8"}}
Document:: {“test:{"createdAt":1.443420386638E12,"firstname":"test2","_class":"com.test.rest.entity.User","type":"User","lastname":"test2"}}
Document:: {“test":{"createdAt":1.443420704104E12,"firstname":"test7","_class":"com.test.rest.entity.User","type":"User","lastname":"test7"}}
Document:: {“test":{"createdAt":1.443420379712E12,"firstname":"test1","_class":"com.test.rest.entity.User","type":"User","lastname":"test1"}}

Answer 1

It should be test1 to test5, though users being selected randomly
Looks like you are expecting to sort by first name, since id is generated by CB.
Try replacing "id" with "firstname", e.g.:
Statement statement = select("*").from("test").where(x("_class")
.eq(s("com.test.rest.entity.User")))
.orderBy(Sort.asc("firstname")).limit(5).offset(offset);
NOTE: I suspect that field name "id" collides with the metadata's id (hence not returned in your json result). Try naming it differently like "_id", "id#" etc.

Answer 2

After going through Spring Data Couchbase codebase, I figure out the way they are querying the n1ql. By default select(*) doesn't select id because id is not part of document. So,
N1QL Statement:
SELECT META(`test`).id AS _ID, META(`test`).cas AS _CAS, `test`.* FROM `test` WHERE `_class` = "com.test.rest.entity.User";
Couchbase Java Client code:
Statement statement = select("META(`test`).id AS _ID, META(`test`).cas AS _CAS, `test`.*").from("test").where(x("_class").eq(s("com.test.rest.entity.User"))).orderBy(Sort.asc("_ID")).limit(5).offset(offset);
NOTE: orderBy(Sort.asc("_ID")) is not required. I just kept it for sample.