jBPM WorkFlow Example

by Online Tutorials Library July 14, 2022

jBPM WorkFlow Example

We will take an example of Passenger who will going to decide a Journey with a Car or Bike. We can understand the working of jBPM WorkFlow into practice with the help of following Step:

Step 1: Open the blank .rf file in Eclipse editor and draw the following WorkFlow Component using Drag and Drop.

jbpm WorkFlow Example

Step 2: Set the properties of every Event Task as we seen previously in the Validation part, the following screen appears.

jbpm WorkFlow Example

Step 3: Now we will change the ruleflow Id and set the variable in properties. To set the variable click on the action properties of variable, the following screen appears:

jbpm WorkFlow Example

Step 4: Click on Add Button and Set the field as below screenshot.

jbpm WorkFlow Example

Step 5: Now our properties will look like below screen in which we had set the Id and Variable.

jbpm WorkFlow Example

Step 6: We do some changes in ProcessTest.java class file to run our process. We can see the changes in the bold font:

 public static final void main(String[] args) {         try {             // load up the knowledge base             KnowledgeBase kbase = readKnowledgeBase();             StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();             KnowledgeRuntimeLogger logger = KnowledgeRuntimeLoggerFactory.newFileLogger(ksession, “test”);              Map<String, Object> params = new HashMap<String, Object>();             params.put(“income”, 1500);             // start a new process instance             ksession.startProcess(“joe.ruleflow”, params);              logger.close();         } catch (Throwable t) {             t.printStackTrace();         }     } 

Step 7: Now we create the Passenger.java file in the same package as ProcessTest.java

 public class Passenger {    private String name;    private int income;    public String getname()    {                   return this.name;    }    public void setname(String value)    {                         this.name = value;    }    public int getincome()    {                        return this.income;    }    public void setincome(Integer value)    {                        this.income = value;    } 

Step 8: Now we run the ProcessTest.java file as Java Application and see the output.

jbpm WorkFlow Example

Step 9: Again we change the value in params.put() function and re-run the Java Application and see the change in output.

jbpm WorkFlow Example

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