Project Voldemort Version 0.9

More than one year after the 0.8.1 release, LinkedIn just released version 0.9 of it's scalable nosql database Project Voldemort.

Go here for the release notes.

Generic Java Methods And Type Inference

To create test data in Java I often wrote things like this:

List<String> names = new ArrayList<String>();
names.add("Tick"); 
names.add("Trick");
names.add("Track");
...

Generic methods and type inference make this task a lot easier:

public static <T> List<T> newArrayList(T... entries) {
  return new ArrayList<T>(Arrays.asList(entries));
}

The following JUnit test shows how to use this code:

public class ListBuilderTest {

  @Test
  public void test() {
    List<String> l = ListBuilder.newArrayList("Tick", "Trick", "Track");
      assertThat(l.size(), equalTo(3));
      assertThat(l, hasItem("Tick"));
      assertThat(l, hasItem("Trick"));
      assertThat(l, hasItem("Track"));
    }
}

By the way: I love the JUnit 4 org.junit.matchers.JUnitMatchers.* and org.hamcrest.CoreMatchers.* Matchers :-)

Of course you do not have to implement this code yourself. You can for example use the great guava libraries.