Schulze

Aggregates preferences via the schulze method voting system (a condorcet method)

Setup

• Install Datomic
• Launch Datomic
• Generate schulze server one-jar
• Launch schulze server one-jar

Install datomic

Get datomic from get-datomic and follow the installation instructions
In the datomic directory, run bin/maven-install
Edit the pom.xml file so that the datomic version matches, for example:

<dependency>
    <groupId>com.datomic</groupId>
    <artifactId>datomic-free</artifactId>
    <version>0.9.4956</version>
</dependency>

Launch Datomic

In the datomic directory run

bin/transactor config/samples/free-transactor-template.properties

Generate schulze server one-jar

from the schulze project directory, run

mvn clean package

Launch schulze server one-jar

The parameters to schulze-server.jar are as follows

1. The port for the schulze voter application
2. The datomic uri

For example, if you want to use port 4000 and the datomic uri datomic:free://localhost:4334/schulze

java -jar server/target/schulze-server.jar 4000 datomic:free://localhost:4334/schulze

Once the schulze application is launched, try it out by navigating to

http://localhost:4000
http://localhost:4000/schulze/introduction.txt

Familiarize yourself with the API

To understand the API, start with SchulzeHandler