Instead of Strings, Object[][] would work as well. That is a generic representation of a Tuple.
Alternatively, they could be stored as Java or Scala Tuples, with a generic utility method to convert between the two. On Mon, Sep 8, 2014 at 10:55 AM, Fabian Hueske <fhue...@apache.org> wrote: > Yeah, I ran into the same problem... > > +1 for using Strings and parsing them, but using the CSVFormat won't work > because this is based on a FileInputFormat. > So we would need to parse the Strings manually... > > 2014-09-08 10:35 GMT+02:00 Aljoscha Krettek <aljos...@apache.org>: > > > Hi, > > on second thought. Maybe we should just change all the example input > > data to strings and use CSV input formats in all the examples. What do > > you think? > > > > Cheers, > > Aljoscha > > > > On Mon, Sep 8, 2014 at 7:46 AM, Aljoscha Krettek <aljos...@apache.org> > > wrote: > > > Hi, > > > yes it's unfortunate that the data types are incompatible. I'm afraid > > > you have to to what you proposed: move the data to a static field and > > > convert it in the getDefaultEdgeDataSet() method in Scala. It's not > > > nice, but copying would duplicate the data and make it easier for it > > > to go out of sync in the Java and Scala versions. > > > > > > What do the others think? This will probably occur in all the examples. > > > > > > Cheers, > > > Aljoscha > > > > > > On Sun, Sep 7, 2014 at 10:04 PM, Vasiliki Kalavri > > > <vasilikikala...@gmail.com> wrote: > > >> Hey, > > >> > > >> I have ported the Connected Components example, but I am not sure how > to > > >> reuse the example input data from java-examples. > > >> In the ConnectedComponentsData class, the vertices and edges data are > > >> produced by the methods getDefaultVertexDataSet() > > >> and getDefaultEdgeDataSet(), which take > > >> an org.apache.flink.api.java.ExecutionEnvironment as parameter. > > >> > > >> One way is to provide public static fields (like in the WordCountData > > >> class), but this introduces a conversion > > >> from org.apache.flink.api.java.tuple.Tuple2 to Scala tuple and from > > >> java.lang.Long to scala.Long and I guess this is an unnecessary > > complexity > > >> for an example (?). > > >> Another way is, of course, to copy the example data in the Scala > > example. > > >> > > >> Am I missing something here? > > >> > > >> Thanks! > > >> > > >> Cheers, > > >> V. > > >> > > >> > > >> On 5 September 2014 15:52, Aljoscha Krettek <aljos...@apache.org> > > wrote: > > >> > > >>> Alright, I updated my repo: > > >>> https://github.com/aljoscha/incubator-flink/commits/scala-rework > > >>> > > >>> This now has a working WordCount example. It's pretty much a copy of > > >>> the Java example with some fixups for the syntax and lambda > functions. > > >>> You'll also notice that I added the java-examples as a dependency for > > >>> the scala-examples. I did this to reuse the example input data. > > >>> > > >>> When you ported a program you can do a pull request against my repo > > >>> and I will collect the examples. > > >>> > > >>> Happy coding. :D > > >>> > > >>> On Fri, Sep 5, 2014 at 12:19 PM, Hermann Gábor <reckone...@gmail.com > > > > >>> wrote: > > >>> > +1 > > >>> > > > >>> > ComputeEdgeDegrees for me! > > >>> > > > >>> > > > >>> > On Fri, Sep 5, 2014 at 11:44 AM, Márton Balassi < > > >>> balassi.mar...@gmail.com> > > >>> > wrote: > > >>> > > > >>> >> +1 > > >>> >> > > >>> >> BatchGradientDescent for me :) > > >>> >> > > >>> >> > > >>> >> On Fri, Sep 5, 2014 at 11:15 AM, Kostas Tzoumas < > > ktzou...@apache.org> > > >>> >> wrote: > > >>> >> > > >>> >> > +1 > > >>> >> > > > >>> >> > I go for WebLogAnalysis. > > >>> >> > > > >>> >> > My experience with Scala consists of going through a tutorial so > > this > > >>> >> will > > >>> >> > be a good stress test both for me and the new API :-) > > >>> >> > > > >>> >> > > > >>> >> > On Thu, Sep 4, 2014 at 9:09 PM, Vasiliki Kalavri < > > >>> >> > vasilikikala...@gmail.com> > > >>> >> > wrote: > > >>> >> > > > >>> >> > > +1 for having other people implement the examples! > > >>> >> > > Connected Components and Kmeans for me :) > > >>> >> > > > > >>> >> > > -V. > > >>> >> > > > > >>> >> > > > > >>> >> > > On 4 September 2014 21:03, Fabian Hueske <fhue...@apache.org> > > >>> wrote: > > >>> >> > > > > >>> >> > > > I go for TriangleEnumeration and PageRank. > > >>> >> > > > > > >>> >> > > > Let's also do the examples similar to the Java examples: > > >>> >> > > > - running out-of-the-box without parameters > > >>> >> > > > - parameters for external data > > >>> >> > > > - follow a similar code structure > > >>> >> > > > > > >>> >> > > > > > >>> >> > > > > > >>> >> > > > 2014-09-04 20:56 GMT+02:00 Aljoscha Krettek < > > aljos...@apache.org > > >>> >: > > >>> >> > > > > > >>> >> > > > > Will do, then people can reserve their favourite examples > > here. > > >>> >> > > > > > > >>> >> > > > > On Thu, Sep 4, 2014 at 8:55 PM, Fabian Hueske < > > >>> fhue...@apache.org> > > >>> >> > > > wrote: > > >>> >> > > > > > Hi, > > >>> >> > > > > > > > >>> >> > > > > > I think having examples implemented by different people > > >>> proved to > > >>> >> > be > > >>> >> > > > > > valuable in the past. > > >>> >> > > > > > I'd help with two or three examples. > > >>> >> > > > > > > > >>> >> > > > > > It might be helpful if you'd port a simple first one > such > > as > > >>> >> > > WordCount. > > >>> >> > > > > > > > >>> >> > > > > > Fabian > > >>> >> > > > > > > > >>> >> > > > > > > > >>> >> > > > > > 2014-09-04 18:47 GMT+02:00 Aljoscha Krettek < > > >>> aljos...@apache.org > > >>> >> >: > > >>> >> > > > > > > > >>> >> > > > > >> Hi, > > >>> >> > > > > >> I have a working rewrite of the Scala API here: > > >>> >> > > > > >> > > >>> >> https://github.com/aljoscha/incubator-flink/commits/scala-rework > > >>> >> > > > > >> > > >>> >> > > > > >> I'm hoping that I'll only have to write the tests and > > port > > >>> the > > >>> >> > > > > >> examples. Do you think it makes sense to let other > people > > >>> port > > >>> >> the > > >>> >> > > > > >> examples, so that someone else uses it and maybe > notices > > some > > >>> >> > quirks > > >>> >> > > > > >> in the API? > > >>> >> > > > > >> > > >>> >> > > > > >> Cheers, > > >>> >> > > > > >> Aljoscha > > >>> >> > > > > >> > > >>> >> > > > > > > >>> >> > > > > > >>> >> > > > > >>> >> > > > >>> >> > > >>> > > >
