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This project implements the Kemerer & Chidamber OO-metrics for GraBaJa and JaMoPP syntax graphs.

Getting started

This project uses Leiningen for retrieving all its dependencies from various Maven repositories, building, and test automation.

Getting started is really simple:

  • Install the lein shell (or bat) script as explained at the Leiningen homepage page.

  • Fetch the project's dependencies:

$ cd kemerer-chidamber
$ lein deps
  • Run the metrics suite on some GraBaJa or JaMoPP model. For example, the following command would load the my-model.xmi JaMoPP model, calculate the metrics on every class in the package (specified as a regex), and display the metric values for the 20 most complex classes per metric.
$ lein run my-model.xmi 'foo\.bar\..*' 20

Generating a JaMoPP model

To generate a JaMoPP model of your own Java code so that you can calculate the metrics for your own classes, too, do the following.

  • Checkout the JaMoPPC command line tool from the EMFText Subversion repository.
$ svn co
  • That checkout contains a runnable jamoppc.jar which you can use to generate a JaMoPP model from your Java source code. The following command parses the code in the src/ folder, generates a JaMoPP model of the complete project, and saves it as my-project.xmi. The other arguments in the call refer external JAR libraries used by your project which are needed for resolution of classes, methods, and fields.
$ cd path/to/my-project
$ java -Xmx2G -jar path/to/jamoppc.jar src/ my-project.xmi \
    lib/foo.jar lib/bar.jar
  • Now you can calculate the metrics as shown above.


Copyright (C) 2012 Tassilo Horn

Distributed under the General Public License (Version 3), with the following additional grant:

Additional permission under GNU GPL version 3 section 7

If you modify this Program, or any covered work, by linking or combining it
with Eclipse (or a modified version of that program or an Eclipse plugin),
containing parts covered by the terms of the Eclipse Public License (EPL), the
licensors of this Program grant you additional permission to convey the
resulting work.  Corresponding Source for a non-source form of such a
combination shall include the source code for the parts of FunnyQT and JGraLab
used as well as that of the covered work.