Drawing BPMN 2.0 business process diagram

Business Process Modeling Notation 2.0 makes a great improvement in business process modeling. There are number of new notations introduced in BPMN 2.0. In this tutorial we will show you how to draw choreography task and message. We will draw the example diagram of BPMN 2.0 draft specification (An example of stand-alone Choreogrpahy diagram).

We first create a model in our project. Right click on the Model Explorer and select Model > New Model...
Name the model as Sales.
We can then create pools directly under Sales model without using diagram. Right click on Sales model and select Model Element > New Model Element.
You can search the model you would like to create in the New Model Element dialog. Enter Po in the Model element type text field to search for the Pool.
Name the pool as Customer. Press OK to proceed.
Repeat the steps to create the pool Bidder, Manufacturer and Supplier. But this time you can directly select create pool from the popup menu.
Right click on the Sales model and select Diagram > Business Process Modeling > Business Process Diagram.
We can now starts create the business process diagram. First let's create a start event. Click on the Start Event tool in the diagram toolbar, and then click on the empty area of the business process diagram.
Now click on the start event and drag out the Generic Resource icon.
Release the mouse button at the blank area of the diagram, and select Choreogrpahy Task from the popup menu.
Name the task as Order Request.
Right click on Order Request and select Open Specification...
Specify Customer pool in Participant 1.
Specify Manufacturer pool in Participant 2.
And select Customer pool in the Initiating participant field.
Press OK to commit.
Now the task Order Request is done. You can see that the initiating participant is showing in the same color of the task, and non-initiating participant is showing in gray.
Let's create a message between Customer and Manufacturer. Click on the Order Request task and drag out of Association > Message icon.
Release the mouse button at the blank area of the diagram, and select New Message Flow from "Customer" to "Manufacturer".
Name the message as Order.
Create an Event-based Exclusive Gateway from Order Request. Click on Order Request and drag out the Sequence Flow > Gateway icon. Drop it on the blank area of the diagram.
Name the gateway as Can Fulfill Order?
Right click on the gateway and select Type > Event-based Exclusive Decision/Merge (XOR).
Repeat the steps to complete the following business process diagram.
It could be multiple instance of procure parts activity doing at the same time. Let's specify it as multi-instance activity. Right click on the Procure Parts task and select Open specification...
Select Multi-Instance Loop in the Loop type combo box.
Press OK to commit. Now the Multi-Instance loop marker is showing in the Procure Parts task.
Let's create messages between Manufacturer and Bidder on the Part Auction activity. Click on the Part Auction activity and drag out the Message icon. Select New Message Flow from "Manufacturer" to "Bidder" from the popup menu.
Name the message as Part Request.
Repeat the step to create another message to Part Auction activity. The message should be New Message Flow from "Bidder" to "Manufacturer". Name the message as Part Response.
You can see that the message from Bidder to Manufacturer is in different color since Bidder is non-initiating participant.
Now the gateway All Parts Available? and All Parts Obtained? in business process diagram only modeled the false situation. What about the true case? It should be go to Order Confirmation activity. We don't want the diagram become so much cross lines since they mess up the layout and make the diagram difficult to read. We can create Link Event to simplify the flow.
Click on the All Parts Available? gateway and drag out the Sequence Flow > Intermediate Event icon.
Name the intermediate event as A.
Right click on the intermediate event and select Trigger > Link Trigger.
Repeat the steps to create another link event to All Parts Obtained? gateway.
Click on the Link Intermediate Event in the diagram toolbar, and click on the blank area of the diagram.
Name the intermediate event as A.
Click on the link event A and drag out the Sequence Flow > Task icon, drop it to the Order Confirmation task.
Now the business process diagram is done.