You can get the free PDF of this book on my Open Content web page www.markwatson.com/opencontent/.

You can order a print book (or a paid for PDF) from Lulu: www.lulu.com/commerce/index.php?fBuyContent=10914825

You can read all of my books for free on my website [markwatson.com](https://markwatson.com).

If you would like to support my work please consider purchasing my books on [Leanpub](leanpub.com/u/markwatson) and star my git repositories that you find useful on [GitHub](github.com/mark-watson?tab=repositories&q=&type=public). You can also interact with me on social media on [Mastodon](mastodon.social/@mark_watson) and [Twitter](twitter.com/mark_l_watson).

All of the book software examples that I wrote are licensed using the LGPL license version 3.

I use a variety of 3rd party JAR files contained in the lib directory.

While most of the software is written in Java, I have made an attempt to also support people who prefer JRuby, Clojure, or Scala with wrappers for those languages.

Please visit [www.patreon.com/markwatson](https://www.patreon.com/markwatson) and sign up to donate $1/month

I have written compatibility wrappers so the book examples can use either the open source Sesame RDF repository or the commercial AllegroGraph product. My wrapper for Sesame adds support for geolocation and text indexing and search.

As of June 2010 you can download the free edition of AllegroGraph version 4 at www.franz.com/agraph/downloads/

Using the free community version of IntelliJ 10, make sure the Clojure and Scala plugins are installed (should be by default), set default JDK version to 5.0, create a new project “Create Java project using existing sources” and make sure do include all of the JAR files in the lib sub directory into the project’s required resources (do this by “Open Module Settings”, click the “Dependencies” tab, Add -> “Single Entry Module Library…”, select all JAR files in lib and the Sesame sub directory of lib, hit “Apply”. Then make sure the test directory is in your source path.).

You should then be able to run any of the examples by right mouse clicking any file in the test directory and choosing the “Run…” option.

The directions are similar to those for IntelliJ: create a new Java Eclipse project, import the example directory from this git repository, make sure that all JAR files in the lib directory are imported as external JAR files, and then run the Java test programs in the test directory. Note: I am not an Eclipse user: if anyone will donate directions for installing and running the Eclipse Clojure and Scala plugins, I will add those directions here.

-Mark Watson