#JavaOne2015

#JavaOne2015

My fifth JavaOne started today.  I attended a Java University class.  It was interesting to be on the other side of that sort of presentation.

Red Hat is well represented this year.  There is a microsite on Red Hat Developer.

Stop by the Red Hat booth in the vendor hall if you are attending.  We have presentations all day long, and there is a rumor about trucker hats...

The agenda at our booth this week:

Monday, October 26th

10:15 - 11:00 

Standardized Extension-Building in Java EE with CDI and JCA

- Jason Porter

11:45 - 12:30

Taming Microservices Testing with Arquillian Cube

- Aslak Knutsen, Alex Soto & Bartosz Majsak

1:45 - 2:30

Docker for Java EE Developers

- Rafael Benevides & Markus Eisele

3:30 -  4:15

Shenandoah: An Ultralow-Pause-Time Garbage Collector for OpenJDK

- Christine H. Flood

SOAPui

This post is a shameless plug for soapUI.

I came across soapUI while running through the Self-Paced Workshop for the JBoss SOA Platform (pdf download.) It is incredibly simple to create a test for a web service. There is even an Eclipse plugin, but I haven't tried that yet.

Happy coding.

groovy.lang.MissingMethodException: No signature of method: static .list() is applicable for argument types:

I've started using Grails recently. Its really nice. Productive, easy to get up and running, etc.

My first stab at testing a Controller produced :

groovy.lang.MissingMethodException: No signature of method: static dbtestapp.Team.list() is applicable for argument types:
(org.codehaus.groovy.grails.web.taglib.GroovyPageAttributes) values: [[max:10]]
Possible solutions: is(java.lang.Object), wait(), wait(long), print(java.lang.Object), split(groovy.lang.Closure), use([Ljava.lang.Object;)
at dbtestapp.TeamController$_closure2.doCall

A little weird. list() is a dynamic method and should be on the object.

Its a known issue in the Grails Jira. The solution is to stick the test inside the "integration" package.

XmlUnit

XmlUnit is an insanely great tool. It has saved me a ton of time in the past few weeks.

I log the differences from my unit test like this :

        XMLUnit.setIgnoreWhitespace(true);
      Diff xmlDiff = new Diff(expectedXml, result);

      DetailedDiff myDiff = new DetailedDiff(xmlDiff);
      List<Difference> allDifferences = myDiff.getAllDifferences();
      for(Difference d : allDifferences){
          log.debug("difference : " + d);
      }

The "result" string comes from a Groovy class using XmlSlurper. Also I usually generate "expectedXml" from a Groovy class.

DBUnit and slf4j

I had never heard of slf4j before this morning, and I have no idea why.  I'm usually pretty up on stuff.

I started to pull some test data with dbunit ( in case you aren't familiar with dbunit here's an excellent intro by Bill Siggelkow ), and when I ran it I got the following error :

Exception in thread "main" java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory
    at org.dbunit.database.AbstractDatabaseConnection.<clinit>(AbstractDatabaseConnection.java:46)
    at [my package and class].main(DBUnitExporter.java:62)

The solution is to download slf4j, and add slf4j-api-1.5.2.jar and slf4j-log4j12-1.5.2.jar to the classpath (I'm using Eclipse so I threw it in the run dialog.)

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