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From Nico Kruber <n...@data-artisans.com>
Subject Re: Building scala examples
Date Wed, 27 Sep 2017 08:28:04 GMT
Hi Michael,
yes, it seems that the self-contained jars only contain the Java examples.

You may also follow the quickstart [1] to get started writing Flink streaming 
programs in Scala.


Nico

[1] https://ci.apache.org/projects/flink/flink-docs-release-1.3/quickstart/
scala_api_quickstart.html

On Wednesday, 27 September 2017 05:04:31 CEST Michael Fong wrote:
> Thanks, Nico.
> 
> 
> I look again at flink-examples- streaming_2.10-1.4-SNAPSHOT.jar, and it
> indeed contains both.
> 
> Originally I was looking at each self-contained jars as I used them as
> examples to create and run my own streaming program. They only contain java
> compiled class, if I am not mistaken.
> 
> Let me try to create a scala example with similar build procedure.
> 
> Thanks!
> 
> 
> On Mon, Sep 25, 2017 at 10:41 PM, Nico Kruber <nico@data-artisans.com>
> 
> wrote:
> > Hi Michael,
> > from what I see, Java and Scala examples reside in different packages,
> > e.g.
> > * org.apache.flink.streaming.scala.examples.async.AsyncIOExample vs.
> > * org.apache.flink.streaming.examples.async.AsyncIOExample
> > 
> > A quick run on the Flink 1.3. branch revealed flink-examples-
> > streaming_2.10-1.3-SNAPSHOT.jar containing both (which you can verify with
> > your favorite archiver tool for zip files).
> > 
> > Afaik, there is no simple switch to turn off Java or Scala examples. You
> > may
> > either adapt the pom.xml or create your own Project with the examples and
> > programming languages you need.
> > 
> > 
> > Nico
> > 
> > On Saturday, 23 September 2017 12:45:04 CEST Michael Fong wrote:
> > > Hi,
> > > 
> > > I am studying how to build a scala program from flink-examples/.
> > > 
> > > I can see there are two source folders java/ and scala/ from IntelliJ,
> > 
> > and
> > 
> > > for most examples, there is a copy of examples for Java and Scala.
> > > Executing 'mvn clean package -Pbuild-jar' would rests in a jar file
> > > under
> > > target/. I am wondering if that is a Java or Scala example that I just
> > > compiled? In addition, is there a way to selectively choose Java o Scala
> > > example to build with current maven settings?
> > > 
> > > Thanks in advance,



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