gRPC: ResultSet serialization is missing alias

[robfrank]

Given a type defined in this way:

        CREATE VERTEX TYPE article ;
        CREATE PROPERTY article.id ILONG;
        CREATE PROPERTY article.author IF NOT EXISTS STRING;

and this query:

SELECT *,  @rid, @type, author AS _author FROM article

Use the RemoteDatabase client to execute the query the alias _author is correctly populated

    RemoteDatabase remoteDatabase = new RemoteDatabase("localhost", 2480,"testdb "root","password);
    ResultSet resultSet = remoteDatabase.query("sql", "SELECT *,  @rid, @type, author AS _author FROM article");
    resultSet.stream().forEach(r-> System.out.println(" _author = " + r.getProperty("_author")));

Using the RemoteGrpcDatabase the _author is not populated

    RemoteGrpcDatabase database = new RemoteGrpcDatabase(server, "localhost", 50051, 2480, "testDatabase, "root", "password");
    ResultSet resultSet = database.query("sql", ""SELECT *,  @rid, @type, author AS _author FROM article);
    resultSet.stream().forEach(r-> System.out.println(" _author = " + r.getProperty("_author")));

Cause

In ArcadeDbGrpcService the method public void executeQuery(ExecuteQueryRequest request, StreamObserver<ExecuteQueryResponse> responseObserver) serialize the result set using private GrpcRecord convertToGrpcRecord(Record dbRecord, Database db) that works at the Record level.

Proposed solution

Let the private GrpcRecord convertToGrpcRecord(Record dbRecord, Database db) work with Result as the AbstractQueryHandler.serializeResultSet does