Using Java github repo's from Clojure

This week after watching Mike's lightning talk on bloom & count-min sketch algorithms I found myself hacking away at a Clojure implementation of a bloom filter and needing to pull in a Java project from github (a murmur hash implementation).



Here's how it's done:

1. Add the following line to ~/.lein/profiles: [lein-git-deps "0.0.1-SNAPSHOT"] under :user :plugins, like so:

   	{:user {:plugins [[lein-difftest "1.3.7"]
   	[lein-marginalia "0.7.1"]
   	[lein-pprint "1.1.1"]
   	[lein-swank "1.4.3"]
   	[lein-git-deps "0.0.1-SNAPSHOT"]]}}

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2. Form the command line run: lein deps
   
   
3. In your projects project.clj file add the following:

   	:git-dependencies [["git://github.com/tnm/murmurhash-java.git"]]
   	:java-source-paths [".lein-git-deps/murmurhash-java/src/main/java/ie/ucd/murmur/"]

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   where :git-dependencies is the github url of the repo you wish to use and :java-source-paths is the path where Leiningen will find the source code to build (note: it will be downloaded from github into a directory .lein-git-deps/ by default
   
4. From the command like run: lein git-deps
   
   
5. Add an import statement to your clojure files:

   	(ns github-java-import-demo.core
   	(:import (ie.ucd.murmur MurmurHash))
   	(:gen-class))
   	(defn -main
   	"I don't do a whole lot."
   	[& args]
   	(println (str "Hello " (MurmurHash/hash32 "World"))))

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