Re: Optional Field in Thrift Structure

[Avinash Dongre]

Thanks Jens,
I am using Binary protocol. I have further debugged the issue. and What I
found is that
I have
List<List<AnotherStructure>> to return. All the fields in the
AnotherStructure is optional. When I try to update this list then only I am
getting the exception.

List<List<AnotherStructure>> allrows = new
ArrayList<List<AnotherStructure>>();
        while (rs.next()) {
            List<AnotherStructure> singleRow = new
ArrayList<AnotherStructure>();
            for (int i = 1; i <= 100; i++) {
                AnotherStructure cv = createAnotherStructure();
                singleRow.add(cv);
            }
            allrows.add(singleRow);
        }
        sr.getResultSet().setRows(allrows);

If I do following by commenting the population i do not get any exception.

List<List<AnotherStructure>> allrows = new
ArrayList<List<AnotherStructure>>();
        while (rs.next()) {
            List<AnotherStructure> singleRow = new
ArrayList<AnotherStructure>();
            allrows.add(singleRow);
        }
        sr.getResultSet().setRows(allrows);


Thanks
Avinash



On Tue, May 14, 2013 at 3:17 AM, Jens Geyer <jensge...@hotmail.com> wrote:

> Hi Avinash,
>
>
>  When I implement my server in Java, do i need to update all the fields
>> while constructing response . Or just some field updates is enough.
>>
>
> You would have to set required fields, if there were any. Since your
> Response struct only consists of optionals, it would be perfectly legal to
> send a response structure back with no values at all.
>
>
>  Sometimes I get following kind of exception
>>
>
> From what I see in the code, the exception is TTransportException.END_OF_*
> *FILE. Therefore I don't think that the problem has anything to do with
> optionals being set or not set. But it could be helpful to the Java guys if
> they had a little more information about your setup, especially which
> transport and which protocol(s) you are using.
>
>
>
> -----Ursprüngliche Nachricht----- From: Avinash Dongre
> Sent: Monday, May 13, 2013 1:49 PM
> To: user@thrift.apache.org
> Subject: Optional Field in Thrift Structure
>
>
> I have following structure
>
> struct Response {
>  1: optional bool isFinished, // for BLOB and CLOB
>  2: optional ResponseSubset r1,
>  3: optional i32 Count,
>  4: optional list<alue> params,
>  6: optional ResponseSubset1 warnings,
> }
>
> and Have api like this
>
> Response performanOperation(1. required i32 id)
>
> When I implement my server in Java, do i need to update all the fields
> while constructing response . Or just some field updates is enough.
>
> Sometimes I get following kind of exception
>
>
> org.apache.thrift.transport.**TTransportException
>    at
> org.apache.thrift.transport.**TIOStreamTransport.read(**
> TIOStreamTransport.java:132)
>    at org.apache.thrift.transport.**TTransport.readAll(TTransport.**
> java:84)
>    at
> org.apache.thrift.protocol.**TBinaryProtocol.readAll(**
> TBinaryProtocol.java:378)
>    at
> org.apache.thrift.protocol.**TBinaryProtocol.readI32(**
> TBinaryProtocol.java:297)
>    at
> org.apache.thrift.protocol.**TBinaryProtocol.**readMessageBegin(**
> TBinaryProtocol.java:204)
>    at org.apache.thrift.**TServiceClient.receiveBase(**
> TServiceClient.java:69)
>
>
> Thanks
> Avinash
>