What is BPEL in Informatica Active VOS?

 

Are you interested in knowing what BPEL process in Informatica Active VOS is? Are you also would like to know what is structure and version of BPEL currently available in the market? If so, then you reached the right place. In this article, we will understand more about the BPEL process.

What is BPEL?

BPEL stands for Business Process Execution Language. Based on Web Service protocols we can define XML notations for Business Process Execution Language for Web Services (i.e. BPEL).

·         BPEL the specification is used as the standard in Web Services architecture

·         BPEL provides details about process-specific language constructs

·         BPEL is also used to define how multiple web services can be composed into coherent information system.

 

What is BPEL Version?

The current version BPEL is 2.0. The standard of BPEL language is based on the following specification

1)    Web Services Description Language Version 1.1.

2)    XPath

3)    XML Schema

 

What is BPEL Process?

Now we understand what is BPEL, let’s understand what BPEL Process is. A BPEL process is a collection of multiple Web Services. Each of the Web Service in this collection performs specific processing. These web services can be granular or complex.

 

Understanding BPEL Process with Example

In the figure below, the Customer places an order online using a Laptop or a similar device. This internally calls a web service. The web service receives and requests and acknowledgments that are communicated back to the Customer. At the same time Place Order process gets started. As soon the Place Order request is executed the communication will be sent to the Customer about the placement of an order in the form of an order number or receipt. The Place Order process internally will call another web service which will connect to the external supplier or provider of the item to the Customer. Finally, the order will be fulfilled with help of these systems communicating with each other. The execution of the customer buying experience can be filled with a proper mechanism using BPEL Process.

 

 

What are the important components of BPEL language?

The listed below are the components of BPEL language

·         Partner Links: Used to define roles of process participants

·         Variables: Variables used within the process

·         Correlation Sets

·         Faulted Handler: In order to handle exceptions

·         Event Handler: Used for handling messages and timeout events

·         Activities: Actual processing steps

 

Sample code for BPEL Language

Here is sample code for BPEL

<process>

<!-- Definition of roles of process participants -->

<partnerLinks> ... </partnerLinks>

<!-- Data and state variables used within the process -->

<variables> ... </variables>

<!-- Correlation comment -->

<correlationSets> ... </correlationSets>

<!-- Exception management -->

<faultHandlers> ... </faultHandlers>

<!-- Message and timeout event handler -->

<eventHandlers> ... </eventHandlers>

<!-- Processing steps -->

Actual processing steps

</process>