Felix Neutatz created FLINK-1398:
------------------------------------
Summary: A new DataSet function: extractElementFromTuple
Key: FLINK-1398
URL: https://issues.apache.org/jira/browse/FLINK-1398
Project: Flink
Issue Type: Wish
Reporter: Felix Neutatz
Priority: Minor
This is the use case:
{code:xml}
DataSet<Tuple2<Integer, Double>> data = env.fromElements(new
Tuple2<Integer, Double>(1,2.0));
data.map(new ElementFromTuple());
}
public static final class ElementFromTuple implements
MapFunction<Tuple2<Integer, Double>, Double> {
@Override
public Double map(Tuple2<Integer, Double> value) {
return value.f1;
}
}
{code}
It would be awesome if we had something like this:
{code:xml}
data.extractElement(1);
{code}
This means that we implement a function for DataSet which extracts a certain
element from a given Tuple.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
