Ogre is a Clojure Gremlin Language Variant of the Gremlin graph traversal language from Apache Tinkerpop. Like Gremlin, it can be used to query any graphs that are TinkerPop-enabled.

• Provide an API that enhances the expressivity of Gremlin when working in Clojure.
• Expose the features of TinkerPop as it makes sense in Clojure.
• Don't introduce any significant amount of performance overhead.

Questions related to Ogre can be asked on the clojure-titanium mailing list.

To subscribe for announcements of releases, important changes and so on, please follow @ClojureWerkz on Twitter.

Orge is a relatively young project that regained active development in 2014-2016.

Orge artifacts are released to Clojars. Maven users should add the following repository definition to your pom.xml:

<repository>
  <id>clojars.org</id>
  <url>http://clojars.org/repo</url>
</repository>

With Leiningen:

[clojurewerkz/ogre "3.0.0.0"]

With Maven:

<dependency>
  <groupId>clojurewerkz</groupId>
  <artifactId>ogre</artifactId>
  <version>3.0.0.0</version>
</dependency>

clojurewerkz.ogre.core=> (def graph (open-graph))
#'clojurewerkz.ogre.core/graph
clojurewerkz.ogre.core=> (def g (traversal graph))
#'clojurewerkz.ogre.core/g
clojurewerkz.ogre.core=> (org.apache.tinkerpop.gremlin.tinkergraph.structure.TinkerFactory/generateModern graph)
nil
clojurewerkz.ogre.core=> (traverse g V (match
                    #_=>   (__ (as :a) (out :created) (as :b))
                    #_=>   (__ (as :b) (has :name "lop"))
                    #_=>   (__ (as :b) (in :created) (as :c))
                    #_=>   (__ (as :c) (has :age 29)))
                    #_=>   (select :a :c) (by :name)
                    #_=>   (into-seq!))
({"a" "marko", "c" "marko"} {"a" "josh", "c" "marko"} {"a" "peter", "c" "marko"})

Orge requires Clojure 1.6+. The most recent stable release is always recommended.

Orge uses Leiningen 2. Once installed and run tests against supported Clojure versions using:

lein all test

Copyright (C) 2014-2016 Zack Maril, and the ClojureWerkz team.

Licensed under the Eclipse Public License (the same as Clojure).