The Madura suite consists of the following modules:

  • Madura Objects allows you to build self-validating Java objects with dynamic metadata. This is the reason for the other projects so this is the flagship. It supports metadata, such as labels and has strong support for I18n. Madura Objects also allows you to plug in a rules engine, such as Madura Rules, to handle cross-field validation and dynamic metadata changes.
  • Madura Rules is a plugin module for Madura Objects that extends it to perform cross field validation and dynamic adjustment of metadata using a simple rule-based approach.
  • Madura Vaadin is for when you want to use Madura Objects with Vaadin. Vaadin is the slickest UI for web applications we have come across and, because it maps nicely to Java POJOs, it is a natural fit for Madura. The result of the mix, especially when combined with Madura Rules is a very sophisticated web application which is easy to maintain.
  • MaduraBundles allows you to run several versions of components of your application at the same time. You can use OSGi instead of this, but there are some differences that make MaduraBundles simpler. For example it falls back to the main class loader by default if it can’t find a class. It also has a nice self-registering mechanism for bundles. You can just copy a jar file into the right directory and it will become part of the (still running) application.
  • Madura Workflow is a workflow system which allows processes to be hot-deployed, complete with dynamic forms, rules and web service messages. It works closely with Madura Objects and Madura Rules to deliver very clean, uncluttered processes. In includes a Vaadin based UI.


  • Madura Perspectives uses Vaadin and Madura Bundles to deliver a frame application that accepts sub applications as dynamic plugins. The sub applications inherit the Vaadin theme selected by the framework as well as the permissions. Sub applications can be added, updates and removed without restarting the frame application. Sub applications can optionally be loosely coupled using a publish-and-subscribe pattern. This one is on-line and you should use the demo script in this document(PDF) to find your way around it.
  • Address Book uses Vaadin and Madura Objects to deliver a JPA based address book application with popup editors etc.
  • Rules Demo uses Vaadin and Madura Objects and Madura Rules to deliver a dynamic UI including the ability to configure a pizza. This one is on-line and you should use the demo script in the Madura Vaadin PDF  to find your way around it.
  • Mobile Demo provides a mobile interface to the Pizza Order application (Android only). You can build the app yourself or download it from here. See the Madura Vaadin PDF for demo details.

Developer Tools

  • MaduraRulesMavenPlugin a maven plugin that ‘compiles’ Madura Rules. In practice this means it generates Java code from the rules definition.
  • Madura Eclipse Plugin an Eclipse plugin to assist you with development of your workflow and rules definitions.


Every project has a PDF posted to Maven central along with Javadocs, binaries etc. So for more detailed information you should go there next. The Git repositories hold all the source, and they all build with Maven.


All of the modules are available as open source. All except Madura Rules carry an Apache 2.0 license which means you can use them anywhere you like without charge. Madura Rules carries an APGL license which means you can use it in any non commercial application without charge, but not in commercial applications. A commercially licensed copy of Madura Rules is available for a negotiable fee. Use the Contact to get in touch.

If you want to use the other Madura products commercially without Madura Rules there is no fee. You are also free to write your own rules (or other) plugin for Madura Objects.


All of these projects are written in Java. We use Eclipse as our development environment so they are all Eclipse projects as well as maven projects. The binaries, source and detailed docs are all uploaded to the Maven Central repository.
The name ‘Madura’ was chosen because it is an island near Java.
Madura was developed by Prometheus Consulting, a New Zealand based software consultancy.