Elastic Search Java API Examples

Motivation

I've been enjoying elastic search recently and looked at a few different wrappers in Scala. There's elastic4s, jest, and spring's. But I think that learning fundamentals is important, elastic4s provides a DSL around the Java API, but if I want to really understand it, then I need to use it directly.

Unfortunately, there's not too much in the way of tutorials online. I found a few, but a lot of the time while working I was running to the JavaDoc for reference. I don't know about you, but I work through examples better than I do at reading reference material and picking apart how various classes are supposed to work with each other. The most important thing is to use the right version of the JavaDoc or you're going to be hopelessly confused. You can find JavaDocs for each version of elastic search here. And for this blog post I'll be using 2.2.0 (The current head) but you should be able to use most of the code I believe, and if not, comment and ask for an example if you need one and can't figure it out.

Quick Note

All of these examples are available on my github, so if you're impatient and want to just grab the code and run it yourself, here's the link.

Setup Elastic Search

You can setup elasticsearch locally and use their get started guide pretty easily. But you don't need to do that if you're just running the code in the repository as the test's start their own instance.