Hi all,
I am a beginner with jBPM and I need some help with the signal event; all I have found in the documentation (and in the web chat) is something like :
VariableName: The name of the variable that will contain the data associated with this event (if any) when this event occurs.
And this doesn't help much...
So I have created a basic example with a start node, then a AND gateway which waits for the signal event. I'm working with jBPM REST webservices; first I call :
POST: http://localhost:8080/gwt-console-server/rs/process/definition/myProcess/new_instance
and in the json return, I get the process instance id (in this example: 57). Then I call :
POST: http://localhost:8080/gwt-console-server/rs/process/tokens/57/transition?signal=receiveInitData
and this pefectly triggers the signal event. But I want to pass parameters, and I think the "VariableName" of the signal event is suitable for that. So I have the "woId" variable, but its value is always null.
Here is, in my Java application, the code I use to call the POST webservice:
private String requestPostService() throws Exception {
String url =
"http://localhost:8080/gwt-console-server/rs/process/tokens/57/transition?signal=receiveInitData";
// here is my map with the parameter I want to pass to the jBPM process
List<NameValuePair> formparams = new ArrayList<NameValuePair>();
formparams.add(new BasicNameValuePair("woId", "testValue"));
HttpPost httpPost = new HttpPost(url);
UrlEncodedFormEntity entity = new UrlEncodedFormEntity(formparams, "UTF-8");
httpPost.setEntity(entity);
HttpClient httpClient = new DefaultHttpClient();
HttpResponse response = httpClient.execute(httpPost);
// the getRequestString() method is parsing the response
return this.getRequestString(response);
}
And in attachement, the process BPMN file.
I don't know what is missing; in the console, it's printing:
Init data...
null
"Init data" is the string called in "Init Data" task; null is the value of my variable.
Someone has an idea?