Drools environment preparation

Version 7.10.0

Eclipse

• Download and install Eclipse from https://www.eclipse.org/downloads/

Drools plugin

• from Eclipse: Help > Install New Software... >
• Paste this URL http://download.jboss.org/drools/release/7.10.0.Final/org.drools.updatesite/ and hit Enter
• When the site loads, select the features to install, or click the Select All button.
• To properly resolve all dependencies, check [x] Contact all update sites during install to find required software
• Click Next, agree to the license terms, and install.

Drools runtime

• Download and unzip Drools distribution from https://download.jboss.org/drools/release/7.10.0.Final/drools-distribution-7.10.0.Final.zip
• Select Window > Preferences > Drools > Installed Drools Runtime > Add…
• Click Browse... and and select the binaries folder of the drools distribution, you have extracted before. The version is determined automatically.

• Click OK > Apply and Close

New Drools Project

• Choose File > New > Drools Project
• Create a new project with example files and click Next.

• Enter a project name, select the drools runtime created earlier, and select Add a sample HelloWorld rule file to this project. Click Finish.

• Open the DroolsTest class that contains the main method. It is located in the package com.sample under src/main/java
• Delete unnecessary code (Message class, and the message object related code)

Fact Model

• Add a new Class (right click on com.sample package under src/main/java > New > Class)

• Enter your class name and click Finish
• Create fields, generate Getters and Setters (right click the editor and select Source > Generate Getters and Setters...)

• Generate Constructor (right click the editor and select Source > Generate Constructor using Fields...)

Rules

• Delete two rules related to the Message class from Sample.drl file
• Change the import declaration and select your Class name, set the dialect
• Write your first rule

• Right click on the DroolsTest.java file and select Run as > Java Application
• Create more complicated rules, and facts, insert them to the kSession, fireAllRules and have fun :)