convert Json to Tuple

[Alexander Smirnov]

Hello everybody!

my RMQSource function receives string with JSONs in it.

Because many operations in Flink rely on Tuple operations, I think it is a good idea to convert JSON to Tuple.

I believe this task has been solved already :)

what's the common approach for this conversion?

Thank you,

Alex

[Timur Fayruzov]

Normally, Json4s or Jackson+scala plugin work well for json to scala data structure conversions. However, I would not expect they support a special case for tuples, since JSON key-value fields would normally convert to case classes and JSON arrays are converted to, well, arrays. That's being said, StackOverflow to the rescue: http://stackoverflow.com/questions/31909308/is-it-possible-to-parse-json-array-into-a-tuple-with-json4s

I didn't try the approach myself, though.

On Mon, Apr 25, 2016 at 6:50 PM, Alexander Smirnov <[hidden email]> wrote:

Hello everybody!

my RMQSource function receives string with JSONs in it.

Because many operations in Flink rely on Tuple operations, I think it is a good idea to convert JSON to Tuple.

I believe this task has been solved already :)

what's the common approach for this conversion?

Thank you,

Alex

[Alexander Smirnov]

Thanks Timur!

I should have mentioned, I need it for Java

On Mon, Apr 25, 2016 at 10:13 PM Timur Fayruzov <[hidden email]> wrote:

Normally, Json4s or Jackson+scala plugin work well for json to scala data structure conversions. However, I would not expect they support a special case for tuples, since JSON key-value fields would normally convert to case classes and JSON arrays are converted to, well, arrays. That's being said, StackOverflow to the rescue: http://stackoverflow.com/questions/31909308/is-it-possible-to-parse-json-array-into-a-tuple-with-json4s

I didn't try the approach myself, though.

On Mon, Apr 25, 2016 at 6:50 PM, Alexander Smirnov <[hidden email]> wrote:

Hello everybody!

my RMQSource function receives string with JSONs in it.

Because many operations in Flink rely on Tuple operations, I think it is a good idea to convert JSON to Tuple.

I believe this task has been solved already :)

what's the common approach for this conversion?

Thank you,

Alex