Ddb needs a maintainer

Suliman via Digitalmars-d-announce digitalmars-d-announce at puremagic.com
Tue Apr 12 02:24:13 PDT 2016


On Tuesday, 12 April 2016 at 08:47:43 UTC, Rory McGuire wrote:
> On Tue, Apr 12, 2016 at 10:31 AM, Suliman via 
> Digitalmars-d-announce < digitalmars-d-announce at puremagic.com> 
> wrote:
>
>> On Monday, 15 February 2016 at 22:50:56 UTC, Piotr Szturmaj 
>> wrote:
>>
>>> On 2016-02-14 20:48, Eugene Wissner wrote:
>>>
>>>> I think may be we should discuss if we can/should change 
>>>> something in ddb. I think there were some interesting and 
>>>> promising ideas in this discussion. Maybe split the 
>>>> PostgreSQL driver and develop it seperately and use an 
>>>> interface more similar to JDBC. Maybe some kind of coworking 
>>>> with ddbc is possible to get more developers together; maybe 
>>>> Suliman has some thoughts on it.
>>>>
>>>
>>> I added you and Jacob as collaborators. Please do what you 
>>> think is right. Thanks.
>>>
>>
>> Could anybody help me to understand how to get data as ubyte?
>>
>> I found this places in sources.
>>
>> https://github.com/pszturmaj/ddb/commit/29070ef90ba8f8d658be50a5da4aa3c96d0cdd5a
>>
>> https://github.com/pszturmaj/ddb/commit/a66ff5a6aa7008235f28cce167d0ae42cc4f4df3
>>
>> But I can't understand how to use it.
>>
>> My code is next:
>>
>>         auto cmd = new PGCommand(conn);
>>
>>         cmd.query = `SELECT name, userblob FROM "USERS" ;`;
>>
>>         ubyte [] x;
>>
>>         try {
>>        auto result = cmd.executeQuery;
>>
>>            foreach (row; result)
>>            {
>>                 writeln(row[0]);
>>                 x = row[1].get!(ubyte);
>>            }
>>
>>     }
>>     catch (ServerErrorException e) {
>>         // Probably table does not exist - ignore
>>     }
>>
>>
>> But I am getting error:
>>
>> source\app.d(28,13): Error: cannot implicitly convert 
>> expression ((
>> VariantN!20u __tmpfordtor3893 = row.opIndex(1u);
>>  , __tmpfordtor3893).get()) of type ubyte to ubyte[]
>> dmd failed with exit code 1.
>>
>>
>>
>>
>>
> Hi,
>
> In your example x is a ubyte[] and you get!(ubyte).
>
> x should be a ubyte, however from your sql query I'd assume you 
> actually
> mean to use .get!(ubyte[])


I need to get binary blob. It's storage in PG as `bytea`. Could 
you show example how to get data from this field?


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