com.couchbase.client.core.message.query

Class GenericQueryResponse

java.lang.Object

com.couchbase.client.core.message.AbstractCouchbaseResponse

com.couchbase.client.core.message.query.GenericQueryResponse

All Implemented Interfaces:

CouchbaseMessage, CouchbaseResponse

public class GenericQueryResponse
extends AbstractCouchbaseResponse

The base response for Query (N1QL) requests. Response is divided into sub-sections, each of which can be asynchronously fed. They are represented as Observable, most of them of ByteBuf. Note that it is important that these streams are consumed and their ByteBuf released.

In order to reuse the values of a section but still correctly release the ByteBuf, the best is to convert them into an appropriate gc-able value, release the buffer and cache the resulting stream.

If one isn’t interested in a particular sub-section, it should still be released by subscribing a Buffers.BYTE_BUF_RELEASER to its stream.

Constructor Summary

Constructors

Constructor and Description
GenericQueryResponse(Observable<ByteBuf> errors, Observable<ByteBuf> rows, Observable<ByteBuf> signature, Observable<String> queryStatus, Observable<ByteBuf> info, CouchbaseRequest request, ResponseStatus status, String requestId, String clientRequestId)

Method Summary

Modifier and Type	Method and Description
String	clientRequestId()
Observable<ByteBuf>	errors() If there were errors and/or warnings while executing the query, contains a ByteBuf for each error and each warning.
Observable<ByteBuf>	info() Contains a single ByteBuf representing the JSON object of query execution metrics (or empty if metrics haven’t been activated).
Observable<String>	queryStatus() Contains a single String denoting the status of the query (success, running, errors, completed, stopped, timeout, fatal).
String	requestId()
Observable<ByteBuf>	rows() Contains one ByteBuf for each result item returned by the server.
Observable<ByteBuf>	signature() Contains a single ByteBuf representing the N1QL json signature of the results.

Methods inherited from class com.couchbase.client.core.message.AbstractCouchbaseResponse

creationTime, request, status, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

GenericQueryResponse

public GenericQueryResponse(Observable<ByteBuf> errors,
                            Observable<ByteBuf> rows,
                            Observable<ByteBuf> signature,
                            Observable<String> queryStatus,
                            Observable<ByteBuf> info,
                            CouchbaseRequest request,
                            ResponseStatus status,
                            String requestId,
                            String clientRequestId)

Method Detail

rows

public Observable<ByteBuf> rows()

Contains one ByteBuf for each result item returned by the server. Each item is a JSON object.

signature

public Observable<ByteBuf> signature()

Contains a single ByteBuf representing the N1QL json signature of the results. May not appear at all if there are no results (in case of fatal errors for example).

errors

public Observable<ByteBuf> errors()

If there were errors and/or warnings while executing the query, contains a ByteBuf for each error and each warning. These are JSON objects, that should at least contain a ‘msg’ and a ‘code’.

queryStatus

public Observable<String> queryStatus()

Contains a single String denoting the status of the query (success, running, errors, completed, stopped, timeout, fatal). The status is always emitted AFTER all rows() and all errors() have been emitted.

info

public Observable<ByteBuf> info()

Contains a single ByteBuf representing the JSON object of query execution metrics (or empty if metrics haven’t been activated).

requestId

public String requestId()

Returns:

the UUID for this request, can be used on the server side for tracing.

clientRequestId

public String clientRequestId()

Returns:

the client-provided identifier if provided in the request, empty string otherwise.