Migrating an existing application from Activiti <= 5.11 (or Camunda fox 6.x - see below) to Camunda 7.0 is straightforward. This page describes the necessary steps.

Later upgrade of Camunda 7.0 to Camunda 7.22 is required and described in Camunda version upgrade docs

Final migration from Camunda 7.x to CIB seven {{ }} should be straightforward.

The changes in short are:

• Maven Dependencies, e.g., activiti.jar changed to camunda-engine.jar.
• Package Names changed from org.activiti to org.camunda.bpm for all modules (including engine, CDI and spring).
• The configuration file changed from activiti.cfg.xml to camunda.cfg.xml.
• Several (internal) classes are renamed - see the lists below.

There are some things which have not changed yet:

• Database schema and table names. Note that we based our fork on Activiti 5.11 and the tables existent in that version.
• The activiti: Custom Extensions are kept. A CIB seven namespace will be introduced soon but backwards compatibility will be ensured.

We based our fork on the database schema of Activiti 5.11. So please update your project to this database using the update scripts provided by Activiti. If you are using a newer version, best ask for assistance in the Discussions.

Exchange Library

Exchange the existing library (here shown as Maven dependency)

<dependency>
  <groupId>org.activiti</groupId>
  <artifactId>activiti</artifactId>
  <version>5.11</version>
</dependency>

to

<dependency>
  <groupId>org.camunda.bpm</groupId>
  <artifactId>camunda-engine</artifactId>
  <version>7.0.0-Final</version>
</dependency>

Make sure that you have the Camunda Maven Repository set correctly:

<repository>
  <id>camunda-bpm-nexus</id>
  <name>camunda Maven Repository</name>
  <url>https://artifacts.camunda.com/artifactory/public/</url>
</repository>

Adjust Package Names

Just do an Organize Imports in your IDE, that should do the trick as the API class names have not changed. Your IDE should figure out the rest for you. For Eclipse this can be done by clicking on the project and hitting Ctrl-Shift-O.

Which Activiti Class Names Have Changed?

That’s it - now your application should run again.