Using a Multi-Instance Subprocess as a Complex Gateway in Oracle PCS by Dan Atwood

To speed the time it takes for a work item instance to flow through a process, copies of the instance can be sent to people in multiple roles simultaneously in the Oracle Integration Cloud Process Cloud Service (PCS).  Someone in each of the roles can then approve or reject the work item instance.  The challenge comes when an early release from all of the parallel copies is desired when anyone in any of the roles rejects their instance and the original work item instance should then continue in the process.

The Business Process Model and Notation (BPMN) has a complex gateway artifact with this process pattern in mind. When needed, the complex gateway’s early release capability makes it one of the most powerful tools process modelers have today when designing executable BPMN processes.  Currently, PCS does not support complex gateways. Because its functionality often needed, this blog describes how to duplicate its functionality when modeling processes using PCS.

Recently added to PCS in May 2017, I recommend that the use of a multi-instance subprocess to do this because:

• One of the multi-instance subprocess activity’s options is to send work item instances to people in multiple roles simultaneously
• Each person in a role can approve or reject the work item instances sent to them
• If one person rejects the instance, an early release can occur by defining a termination condition in its properties and the original instance can then leave the multi-instance subprocess
• If a rejection occurs, all of the other copies can automatically be removed from the other role queues

Antonis Antoniou has written an excellent blog on the PCS multi-instance subprocess.  This expands the scope of what he wrote a little to include how to assign the instances spawned to people in different roles, and shows how to cause an early release occur when a one person rejects their copy of the instance. Read the complete article here.

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Jarvis Pizzeria: Using the REST interface to start a Process by Richard Olrichs & Marcel van de Glind

In the previous blog, we already explained how you can start your process from a SOAP interface. It is also possible to do this with a REST call. For this you need to find out a couple of things about your process after which you can do a post on the Oracle API to start the process. You can use any REST client you want, in this example we use Postman.

First of all, you need to query the process definitions API. This can be found by putting /bpm/api/4.0/process-definitions after the baseUrl, in our example: Read the complete article here.

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Jarvis Pizzeria: Deployment and using the workspace by Richard Olrichs & Marcel van de Glind

Having played around with all the features PCS has to offer it is now time to see some action. In this blog we will show you how to deploy your application, start the application and see how it behaves within the workspace.

But first of all, we need to have a application that is ready to deploy. In other words, our minimal deployable product consists of an application without any errors. Pressing the validate button in the top-right corner will tell you the current state of the implementation.

Unfortunately, we ran into a bunch of errors! Mostly due to missing implementations of service calls. The good thing however is the “Fix” link.

In contrast to JDeveloper, clicking the “Fix”-link will bring you directly to the – in this scenario – properties screen to fix the issue. Oops, we forgot to select a ruleset for our business rule activity. Read the complete article here.

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Jarvis Pizzeria: Using an imported XSD in PCS by Richard Olrichs & Marcel van de Glind

In the post  Import the 12c On-premises Preparation Process we saw the Business Types that were imported (also shown here)

We already stated that we had an issue with enumerations. But is this the only issue with the xsd? Unfortunately not, as will become clear soon.

Making task forms was not part of the import blog, however, in this blog we are going to do this. We will do this based on the imported xsd. So let’s get started. Read the complete article here.

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Jarvis Pizzeria: Testing in PCS against the Development or Production environment by Richard Olrichs & Marcel van de Glind

Within PCS there are actually two different environments, a development environment and the production environment. Once you have deployed your application it is available in the production environment as a certain version of the application. However, you might want to test your application before you deploy a new version. You can also test your environment against the so called ‘development environment’.

The blue button bar has a Test as well as an Deploy button on the top right. Read the complete article here.

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Jarvis Pizzeria: Handling SOAP Faults in PCS by Richard Olrichs & Marcel van de Glind

As we are very optimistic developer we started out with modeling and testing the happy flow of our Jarvis pizzeria. But as experience learns it is the big bad world that obliges us to deal with both expected and unexpected failures. This blog post we will look into the handling of SOAP faults that PCS has to offer out-of-the-box.

As a starting point we have created a basic process with one service call:

This SOAP Fault service is connected to mockable.io service that is configured to throw back a remote fault, i.e. the invoked service endpoint cannot be reached. Let’s deploy the process, start an instance and see in the workspace what has happened.

Note: to use the OOTB error handling leave the fault policy checkbox marked during deployment: Read the complete article here.

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VBCS: Calling a REST endpoint by Richard Olrichs

Oracle Application Builder Cloud Service (ABCS) has been renamed to Visual Builder Cloud Service (VBCS), so this blog series about ABCS continues as a blog series about VBCS. In this blog I will explain how to call a REST endpoint and create a Business Object based on this REST Service. There are several ways to do this, but I will start with the most basic one. The data that we get from the REST service will only be presented (read-only), we will not send updates/posts to the REST endpoint.

To call the REST endpoint, we will use a template provided within VBCS that we are going to adjust just a little bit. We can do the editing of the 2 javascript files within VBCS itself. This is a temporary solution, Oracle is working on making these configurable and even more easy to use for users. Read the complete article here.

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Jarvis Pizzeria: Decision Model in the Delivery Process by Richard Olrichs

To make the delivery of the pizzas to our customer, we need to decide how to deliver the pizzas. In our process we’ve already got the order data, so we know what the order is and where it needs to be delivered, but what is the best way to deliver the pizzas?

We will create a decision model in PCS to help us with this decision. In the delivery process we will call the decision model like a service and use the answer to make the correct decision.

The input for the decision model will be the amount of pizzas and the distance to the customer. Based on these data we will decide to either use a bike, moped or car to do the delivery. A very common decision to make in the Netherlands, since we love our bikes and often deliver pizzas by bike rather than by car.

We start with going to the PCS home. All the way out of the jarvis application and on this home menu we click the create button. Here we see that besides new applications, we can also create a new decision model. This means the decision is not coupled directly to the application with our processes, but it is a stand alone decision model. Read the complete article here.

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