Re: Scala Table API with Java POJO

Posted by Timo Walther on
URL: http://deprecated-apache-flink-user-mailing-list-archive.369.s1.nabble.com/Scala-Table-API-with-Java-POJO-tp8219p8223.html

Hi Kim,

as the exception says: POJOs have no deterministic field order. You have
to specify the order during the DataSet to Table conversion:

Table table = tableEnv.fromDataSet(pojoDataSet, "pojoField as a,
pojoField2 as b");

I hope that helps. Otherwise it would help if you could supply a code
snippet of your program.

Timo

Am 01/08/16 um 10:19 schrieb Dong-iL, Kim:

> my flink ver is 1.0.3.
> thanks.
>
>> On Aug 1, 2016, at 5:18 PM, Dong-iL, Kim <[hidden email]> wrote:
>>
>> I’ve create a program using table API and get an exception like this.
>> org.apache.flink.api.table.ExpressionException: You cannot rename fields upon Table creation: Field order of input type PojoType<….> is not deterministic.
>> There is an error not in java program, but in scala program.
>> how can I use java POJO with scala Table API.
>>

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Freundliche Grüße / Kind Regards

Timo Walther

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