How to invoke a java application in the middle of the process

Question

In the middle of one process, I want to invoke a java application. After the java application, the process will continue and select a path based on the result of the java application. Which activity can be used to invoke a java application in the middle of the process?
Thanks

Answer 1

BPM Changes:
1. Under 'External Resources' create a new resource of type 'Server Configuration'. Specify the host port and path of your servlet here. This will be invoked from your process. Lets name this configuration as 'myExternalConf'.
2. Create an interactive activity say 'InvokeMyApplication' in your process. The main task of this application should be external task. (Implementation Type = External)
3. Create the prepareMethod method say 'prepareExternal'. Set the arguments for this method as output arguments. These arguments will be available to you in your external servlet.
4. Create the commit method say 'commitExternal'. Set the arguments as input arguments. The external servlet will return these arguments back to the process.
5. Check the 'Use configuration' checkbox for your main task (external task). Select 'myExternalConf' here.
Servlet changes:
When the user executes your 'InvokeMyApplication' activity, he will be taken to the external servlet of your external application. You will be passed the currentActivity, currentParticipant, instanceID and one more argument (which I dont remember :( ) as url parameters.
1. In this servlet, open a PAPI/PAPI WS session for the participant passed to the servlet as url parameter
2. Use the currentActivity ( passed in url parameter), to call prepare method on this activity. This will return you with the arguments defined in 'prepareExternal' method.
3. Using these argumets, or otherwise, you can do whatever you want in this servlet. When done prepare the arguments to pass back to BPM.
4. call papiService.activityCommit and return the arguments.
5. Flow goes back to your BPM application
Some code that might help:
Servlet calling prerpare:
ProcessServiceSession papisession = null;
try{
papisession = initializePapi();
fuego.papi.Arguments args = fuego.papi.Arguments.create();
args = papisession.activityPrepare(activity, instanceId, args);
Map<String, Object> argsMap = args.getArguments();
return argsMap;
protected ProcessServiceSession initializePapi(){
Properties configuration = new Properties();
try {
InputStream inputStream = getClass().getClassLoader().getResourceAsStream("bpm.properties");
if(inputStream == null)
throw new IOException();
configuration.load(inputStream);
} catch (IOException ex) {
log.log(Level.WARNING, "Could not load bpm.properties", ex);
return null;
Servlet calling commit:
public void commitToALBPM(Map parameters){
try{
papisession = initializePapi();
fuego.papi.Arguments args = fuego.papi.Arguments.create();
Set s = parameters.keySet();
Iterator propNames = s.iterator();
while (propNames.hasNext()){
String key = (String)propNames.next();
String val = (String)parameters.get(key);
args.putArgument(key, val);
papisession.activityCommit(activity, instanceId, args);
catch (OperationException e)
HTH
Satinder