Fill in a name for your project and if necessary change the location where this project should be located (by default Eclipse will generate it inside your Eclipse workspace folder) and click "Next >".

Now you can optionally include a sample process in your project to get started. You can select to either use a simple "Hello World" process, a slightly more advanced process including human tasks and persistence or simply an empty project. You can also select to include a JUnit test class that you can use to test your process. These can serve as a starting point, and will give you something executable almost immediately, which you can then modify to your needs.

Finally, the last page in the wizard allows you select a jBPM runtime, as shown below. You can either use the default runtime (as configured for you workspace, in your workspace preferences), or you can select a specific runtime for this project. For more information about runtimes and how to create them, see the section on jBPM runtimes in this chapter.

You can also select which version of jBPM you want to generate sample code for. By default it will generate an example using the latest jBPM 6.x API, but you could also generate examples using the old jBPM 5.x API. Note that you yourself are responsible for making sure that the code you generate can be understood by the runtime (for example, if you create an example using jBPM6 API but select a jBPM5 runtime, your sample will not compile). Also note that, if you want to execute a jBPM5 example on jBPM6, you will need to have the knowledge-api JAR inside your jBPM6 runtime, as this is responsible for the backwards compatibility of the jBPM5 API in jBPM6.

When you selected the simple 'hello world' example, the result is shown below. Feel free to experiment with the plug-in at this point.

The newly created project contains an example process file (sample.bpmn) in the src/main/resources directory and an example Java file (ProcessTest.java) that can be used to test the process in a jBPM engine. You'll find this in the folder src/main/java, in the com.sample package. All the other JARs that are necessary during execution are also added to the classpath in a custom classpath container called jBPM Library.

You can also convert an existing Java project to a jBPM project by selecting the "Convert to jBPM Project" action. Right-click the project you want to convert and under the "Configure" category (at the bottom) select "Convert to jBPM Project". This will add the jBPM Library to your project's classpath.

The pom.xml that is generated for your project contains the following:

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

  <modelVersion>4.0.0</modelVersion>

  <groupId>com.sample</groupId>
  <artifactId>jbpm-example</artifactId>
  <version>1.0.0-SNAPSHOT</version>

  <name>jBPM :: Sample Maven Project</name>
  <description>A sample jBPM Maven project</description>

  <properties>
    <version.org.jbpm>6.0.0.Final</version.org.jbpm>
  </properties>

  <repositories>
    <repository>
      <id>jboss-public-repository-group</id>
      <name>JBoss Public Repository Group</name>
      <url>http://repository.jboss.org/nexus/content/groups/public/</url>
      <releases>
        <enabled>true</enabled>
        <updatePolicy>never</updatePolicy>
      </releases>
      <snapshots>
        <enabled>true</enabled>
        <updatePolicy>daily</updatePolicy>
      </snapshots>
    </repository>
  </repositories>

  <dependencies>
    <dependency>
      <groupId>org.jbpm</groupId>
      <artifactId>jbpm-test</artifactId>
      <version>${version.org.jbpm}</version>
    </dependency>
  </dependencies>
</project>

In the properties section, you can specify which version of jBPM you would like to use (by default it uses 6.0.0.Final). It adds the JBoss Nexus Maven repository (where all the jBPM JARs and their dependencies are located) to your project and configures the dependencies.

The project also contains a sample process, under src/main/resources, in the com.sample package, and a kmodule.xml configuration file under the META-INF folder. The kmodule.xml defines which resources (processes, rules, etc.) are to be loaded as part of your project. In this case, it is defining a kbase called "kbase" that will load all the resources in the com.sample folder:

<kmodule xmlns="http://jboss.org/kie/6.0.0/kmodule">
  <kbase name="kbase" packages="com.sample"/>
</kmodule>

Finally, it also contains a Java class that can be used to execute the sample process. It will first create a kbase called "kbase" (by inspecting the kmodule.xml file and thus loading the sample.bpmn process) and then use a RuntimeManager to get access to a KieSession and TaskService. In this case, it is used to start a process and then complete the tasks created by this process one by one.

In order to use the Kie Navigator View, you must first define an Application Server in the WST Servers View. So, initially the Kie Navigator View will look like this:

Clicking on the link “Use the Servers View to create a new server…” will open the Servers View where a new server definition can be created. Management of the server, including startup and shutdown is done from here. Note that Drools/jBPM requires certain additional JVM and server startup options, which must be added to the server startup configuration. Once a new server has been defined, open the server configuration page (double click on the newly created server entry) and the server Overview page is opened:

Clicking the “Open launch configuration” link opens the following dialog:

Here the user can enter the app server and JVM arguments to properly configure startup of the Kie web service. See the Drools/jBPM documentation for more information about these arguments.

Alternatively, the app server and Kie web service application can be started from a command-line using either the provided Ant demo scripts or any other custom startup script. Note that starting from the Servers view may cause the app server to be shut down when exiting Eclipse. A server can also be configured in Eclipse for external management (see the “Server Behavior” section in the above screenshot.)

Once the server has been configured and started, the Kie Navigator View will recognize the server and attempt to communicate with the Kie web service. The view now looks something like this:

In this screenshot several nodes have been expanded to show all possible situations. At the root of this view is the app server. The Kie Navigator View is designed to support multiple servers, but each must obviously be configured a different hostname and/or HTTP port number. This, for example, allows management of development, test and production servers.

Below the server level are Organizational Units and Repositories. Repositories that are not currently associated with an Organizational Unit appear directly under the Server root node. Below the Organizational Unit level are the associated Repositories, and below the Repositories are Projects contained in the Repository.

You will be asked to select which branch you would like to import. Select the master branch and click "Next >" again.

Finally, you need to specify where on your local file system you would like this repository to be created. Fill in the directory (you can use the Browse button to select the folder in question, and if necessary you can create a new folder there as well) and click "Next >". This will now download the repository to the folder you just selected.

You still need to import the repository you just downloaded as a project in your Eclipse workspace. Select "Import as general project" and after clicking "Next >", give it a name and click "Finish". After doing so, your workspace should now contain your repository, and you should be able to browse, open and edit the various assets inside.

Once you've committed your change to your local git, you still need to push it to the workbench repository. Right-click your project again, and select "Team -> Push to Upstream".

In the next page, you should see the pom.xml of the project you selected. Click Finish.

If your project requires some of the jBPM libraries to correctly compile and/or execute any Java classes in your project (for example if you have test classes in your project that start up a jBPM engine and execute some tests for your project, or if you are using the data modeler, which will add some annotations to the generated Java classes), you still need to add the jBPM libraries to the classpath of your project. To do so, simply convert your project into a jBPM project, which will add the jBPM library to your project's classpath. Right-click your project and select "Configure -> Convert to jBPM Project". Your project should now have a jBPM Library added to its classpath (it might be necessary to clean your project to pick up this change and recompile all Java classes).