ART-BPMS-DROOLS

This module adds Drools DRL support to Camunda BPMS

Features

• Execution of DRL files from BPMN

Installation

1. Maven is required for building this module
2. Open your project's pom
3. Add the reference to the artezio mvn repository:

   <repository>
       <id>artezio</id>
       <url>https://nexus.artezio.net/repository/maven-releases</url>
   </repository>

4. Add the dependency:

   <dependency>
       <groupId>com.artezio.bpm.camunda</groupId>
       <artifactId>bpms-drools</artifactId>
       <version>${bpm-drools.version}</version>
   </dependency>

Usage

1. Add DRL files to your Process Application archive (e.g. src/main/resources/rule1.drl, src/main/resources/rule2.drl)
2. In BPMN diagram create a Delegate Expression Service task and point it to com.artezio.bpm.integration.drools.DroolsDelegate class (${droolsDelegate} delegate expression when using CDI)
3. Input. Provide the following input params:
   • rules - List of input rule filenames within the deployment, e.g. rule1.drl, rule2.drl
   • facts - List of facts that will be inserted into Drools Working memory
4. Output. The following local variables are created in the task after evaluating all rules and are available for output mapping:
   • facts - List of objects in the final state of Working memory after firing all rules
   • inserted - List of objects that were inserted into Working memory during rules evaluation
   • updated - List of objects that were updated in Working memory during rules evaluation
   • deleted - List of objects that were deleted from Working memory during rules evaluation
5. To map local task variable to global process variable you could for example create task output parameter of type text and specify #{inserted} as value. The variable is then populated with List of inserted objects, despite being marked as text
6. Deploy the Process Application archive and run the process. DRL files will be executed when the Service task is run