Chapter 50. Configuring an embedded process engine and decision engine in IBM WebSphere Application Server

Procedure

1. Declare the Red Hat Business Automation BOM in the pom.xml file:

   <dependencyManagement>
    <dependencies>
     <dependency>
      <groupId>com.redhat.ba</groupId>
      <artifactId>ba-platform-bom</artifactId>
      <version>7.12.0.redhat-00008</version>
      <type>pom</type>
      <scope>import</scope>
     </dependency>
    </dependencies>
   </dependencyManagement>
   <dependencies>
   <!-- Your dependencies -->
   </dependencies>

2. Declare dependencies required for your project in the <dependencies> tag. After you import the product BOM into your project, the versions of the user-facing product dependencies are defined so you do not need to specify the <version> sub-element of these <dependency> elements. However, you must use the <dependency> element to declare dependencies which you want to use in your project.

   • For a basic Red Hat Process Automation Manager project, declare the following dependencies, depending on the features that you want to use:

     Embedded process engine dependencies

     <!-- Public KIE API -->
     <dependency>
       <groupId>org.kie</groupId>
       <artifactId>kie-api</artifactId>
     </dependency>
     
     <!-- Core dependencies for process engine -->
     <dependency>
       <groupId>org.jbpm</groupId>
       <artifactId>jbpm-flow</artifactId>
     </dependency>
     
     <dependency>
      <groupId>org.jbpm</groupId>
       <artifactId>jbpm-flow-builder</artifactId>
     </dependency>
     
     <dependency>
       <groupId>org.jbpm</groupId>
       <artifactId>jbpm-bpmn2</artifactId>
     </dependency>
     
     <dependency>
       <groupId>org.jbpm</groupId>
       <artifactId>jbpm-runtime-manager</artifactId>
     </dependency>
     
     <dependency>
       <groupId>org.jbpm</groupId>
       <artifactId>jbpm-persistence-jpa</artifactId>
     </dependency>
     
     <dependency>
       <groupId>org.jbpm</groupId>
       <artifactId>jbpm-query-jpa</artifactId>
     </dependency>
     
     <dependency>
       <groupId>org.jbpm</groupId>
       <artifactId>jbpm-audit</artifactId>
     </dependency>
     
     <dependency>
       <groupId>org.jbpm</groupId>
       <artifactId>jbpm-kie-services</artifactId>
     </dependency>
     
     <!-- Dependency needed for default WorkItemHandler implementations. -->
     <dependency>
       <groupId>org.jbpm</groupId>
       <artifactId>jbpm-workitems-core</artifactId>
     </dependency>
     
     <!-- Logging dependency. You can use any logging framework compatible with slf4j. -->
     <dependency>
       <groupId>ch.qos.logback</groupId>
       <artifactId>logback-classic</artifactId>
       <version>${logback.version}</version>
     </dependency>

   • For a Red Hat Process Automation Manager project that uses CDI, you typically declare the following dependencies:

     CDI-enabled process engine dependencies

     <dependency>
       <groupId>org.kie</groupId>
       <artifactId>kie-api</artifactId>
     </dependency>
     
     <dependency>
       <groupId>org.jbpm</groupId>
       <artifactId>jbpm-kie-services</artifactId>
     </dependency>
     
     <dependency>
       <groupId>org.jbpm</groupId>
       <artifactId>jbpm-services-cdi</artifactId>
     </dependency>

     Embedded decision engine dependencies

     <dependency>
       <groupId>org.drools</groupId>
       <artifactId>drools-compiler</artifactId>
     </dependency>
     
     <!-- Dependency for persistence support. -->
     <dependency>
       <groupId>org.drools</groupId>
       <artifactId>drools-persistence-jpa</artifactId>
     </dependency>
     
     <!-- Dependencies for decision tables, templates, and scorecards.
     For other assets, declare org.drools:business-central-models-* dependencies. -->
     <dependency>
       <groupId>org.drools</groupId>
       <artifactId>drools-decisiontables</artifactId>
     </dependency>
     <dependency>
       <groupId>org.drools</groupId>
       <artifactId>drools-templates</artifactId>
     </dependency>
     <dependency>
       <groupId>org.drools</groupId>
       <artifactId>drools-scorecards</artifactId>
     </dependency>
     
     <!-- Dependency for loading KJARs from a Maven repository using KieScanner. -->
     <dependency>
       <groupId>org.kie</groupId>
       <artifactId>kie-ci</artifactId>
     </dependency>

   • To use KIE Server, declare the following dependencies:

     Client application KIE Server dependencies

     <dependency>
       <groupId>org.kie.server</groupId>
       <artifactId>kie-server-client</artifactId>
     </dependency>

   • To create a remote client for Red Hat Process Automation Manager, declare the following dependency:

     Client dependency

     <dependency>
       <groupId>org.uberfire</groupId>
       <artifactId>uberfire-rest-client</artifactId>
     </dependency>

   • When creating a JAR file that includes assets, such as rules and process definitions, specify the packaging type for your Maven project as kjar and use org.kie:kie-maven-plugin to process the kjar packaging type located under the <project> element. In the following example, ${kie.version} is the Maven library version listed in What is the mapping between Red Hat Process Automation Manager and the Maven library version?:

     <packaging>kjar</packaging>
     <build>
      <plugins>
       <plugin>
        <groupId>org.kie</groupId>
        <artifactId>kie-maven-plugin</artifactId>
        <version>${kie.version}</version>
        <extensions>true</extensions>
       </plugin>
      </plugins>
     </build>

3. If you use a process engine or decision engine with persistence support in your project, you must declare the following hibernate dependencies in the dependencyManagement section of your pom.xml file by copying the version.org.hibernate-4ee7 property from the Red Hat Business Automation BOM file:

   Hibernate dependencies

   <!-- hibernate dependencies -->
   <dependencyManagement>
     <dependencies>
       <dependency>
       <groupId>org.hibernate</groupId>
       <artifactId>hibernate-entitymanager</artifactId>
       <version>${version.org.hibernate-4ee7}</version>
       </dependency>
   
       <dependency>
       <groupId>org.hibernate</groupId>
       <artifactId>hibernate-core</artifactId>
       <version>${version.org.hibernate-4ee7}</version>
       </dependency>
     </dependencies>
   </dependencyManagement>