ResultSet getObject with class return null values filled as it was not null

When selecting values from table with getObject(index, Class) simple types (like float/int/boolean) return 0/false as result (when null is expected).

CREATE TABLE db.tbl
   (
   id int not null,
   double_col double,
   float_col float,
   varchar_col varchar(36),
   boolean_col boolean,
   int_col int,
   bigint_col bigint,
   char_col char(10),
   int32_col int32
   primary key (id)
   )
   distributed by (id)

Expected: [1, null, null, null, null, null, null, null, null] Actual: [1, 0.0, 0.0, null, false, 0, 0, null, 0]

getObject(int columnIndex) returns null as expected.

Is that expected behaivor? (it breaks Vertx jdbc client as it always uses getObject with expected class)

[FDoKE]

@zhicwu dbeaver probably using getObject(index) to retrieve column values simple reproducer:

Connection connection = DriverManager.getConnection("jdbc:clickhouse://clickhouse:8123/default");
Statement statement = connection.createStatement();
statement.execute("select double_col from db.table");
ResultSet resultSet = statement.getResultSet();
resultSet.next();
Object object1 = resultSet.getObject(1); // returns null
Double object2 = resultSet.getObject(1, Double.class); // returns 0.0

[FDoKE]

Yeah, that seems strange to me too, why would they do that if it perfectly worked with getObject(int), I made an issue for them too to get their idea behind this change.