how to convert DataStream to DataSet

[subash basnet]

Hello all,

In WikipediaAnalysis.java we get *result *of type *DataStream<Tuple2<String,
Long>>*,

I would want to convert *result* to *newResult* of type
*DataSet<Tuple1<String>>*,

So tried the following:
DataSet<Tuple1<String>>newResult = result.map(new getResult());

public static final class getResult implements MapFunction<Tuple2<String,
Long>, Tuple1<String>> {

@Override
public Tuple1<String> map(Tuple2<String, Long> value) {
return new Tuple1<String>(value.f1 + "");
}
}

But there is type mismatch, with error as:
*Type mismatch: cannot convert from
SingleOutputStreamOperator<Tuple1<String>> to DataSet<Tuple1<String>>*


Best Regards,
Subash Basnet