user defined functions - Return Row Type In Presto Udf -

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i want implement udf returns me row.

i searched on net, there no example. in source of presto saw methods this takes row data type parameter. there no sample how create row.

thanks.

define output function this:

@outputfunction("row(name double,some double)") public static void output(somestate state, blockbuilder out){ blockbuilder blockbuilder = doubletype.double.createblockbuilder(new blockbuilderstatus(), 1);     doubletype.double.writedouble(blockbuilder, 1.0);     doubletype.double.writedouble(blockbuilder, 2.0);     block block =  blockbuilder.build();     out.writeobject(block);     out.closeentry(); }

here, define parameter types row(name type)





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