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CDI and Java EE Integration

The camunda-engine-cdi module provides programming model integration with CDI (Context and Dependency Injection). CDI is the Java EE 6 standard for Dependency Injection. The camunda-engine-cdi integration leverages both the configuration of the Camunda engine and the extensibility of CDI. The most prominent features are:

A custom El-Resolver for resolving CDI beans (including EJBs) from the process,
Support for @BusinessProcessScoped beans (CDI beans, the lifecycle of which are bound to a process instance),
Declarative control over a process instance using annotations,
The Process Engine is hooked-up to the CDI event bus,
Works with both Java EE and Java SE,
Support for unit testing.

Quarkus Engine Extension

Since Quarkus ArC does not aim to fully implement CDI 2.0, you cannot use the full range of features the camunda-engine-cdi module provides. Read about the limitations in the Quarkus Integration guide.

Maven Dependency

To use the camunda-engine-cdi module inside your application, you must include the following Maven dependency:

Please import the Camunda BOM to ensure correct versions for every Camunda project.

<dependency>
  <groupId>org.camunda.bpm</groupId>
  <artifactId>camunda-engine-cdi</artifactId>
</dependency>

Replace ‘x’ with your Camunda Platform version.

There is a project template for Maven called camunda-archetype-ejb-war, which gives you a complete running project, including CDI integration.