Welcome to the YAWL User Group website yaug.org! We would like to concentrate the know-how of all YAWL users and serve as a plattform for suggestions, discussions and collaboration. YAWL is an open source BPM/Workflow system being developed by the YAWL Foundation.

Please join our community, if you would like to take part in the YAWL User Group. Please use the public forum to ask questions about YAWL or the user group itself. For any private inquiries use our contact form.


YAWL and LDAP

treesOrganisational data, user names and passwords are at the centre of the resource perspective of workflow management systems. YAWL has its own organisational model, and in the standard configuration, organisational data are entered via the control centre.

Extracting YAWL Log Entries for Process Mining

download log button

YAWL can create process logs in XES format by simply selecting a specification in the control panel and clicking on "download log".

Unfortunately, the log that is exported there does not contain the log predicates that can be entered in YAWL specifications. These logs can only be extracted using the YAWL API. There is now a Java Command Line Program that extracts these log attributes.

 

Reusing YAWL specifications as subworkflows

Imagine that you have a YAWL specification that you want to reuse as a subworkflow inside other workflows. The problem with ordinary subnets in YAWL specifications is that they cannot be reused elsewhere. This problem can be solved using worklets. In this tutorial we will show the special case of a worklet that is being used as a subworkflow. For this we do not need the rules editor because the rule tree consists of only two nodes.

YAWL generated process log analyzed with Disco

YALW - Meal Workflow

In the context of our university project, “Process Mining” at Hochschule Bonn-Rhein-
Sieg
,  we  are  executing  processes  with  YAWL  and  using  Disco  to  analyze  the
process logs. Please read the whole article here YAWL generated process log analyzed with Disco.
 
In  this  article  we  are  describing,  how  we  analyzed  a  compact  YAWL  generated

Where do YAWL users come from? (update)

visits per continent

Our first look at the origin of YAWL users was in 2013. Today we look at the users of the last twelve months and compare the result to 2013. The distribution by continents is more or less unchanged: Europe and North America share more than three quarters of the pie.

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Web Service Invoker

We will see how the web service invoker service of YAWL can be used. We will create a workflow that invokes a publicly available web service.

workflow

The first thing to check is if the YAWL web service invoker is installed. In the YAWL control panel click on Updates. In the line yawlWSInvoker check the mark if it is not checked and click Update.

Integrating and Using YAWL in Liferay Portal

Liferay and YAWL under one roof

In the context of my final thesis, I examined how YAWL can be integrated and used in the Liferay Portal environment, i.e., how portal users can access their respective workqueue and workitems from within the portal. To achieve this goal, I developed a sample application based on a very common business process, the check-in of new employees. The most parts of the developed integration and implementation components are generic, e.g., the workqueue portlet can be used with any YAWL engine and for any YAWL participant reachable via network or internet.

Documents in Workflows

Document handling in workflows is an important topic. Uploading and downloading documents - possibly from a document management system - is at the core of administrative activities. Fortunately, YAWL has a built-in datatype called YDocumentType for doing exactly that. So let us follow the section on document type of the YAWL user manual to see how it works.

We start the YAWL engine, open the YAWL editor, and add two tasks.

step1

The final YAWL 3.0 Release is now available

Forums:

YAWL 3.0 has just been released. There are a large number of improvements to the new process editor (over the 3.0beta release). The engine and services also have a number of improvements. The editor, YAWL engine and all services can now be auto-updated, too, so you will always have access to the latest builds of the entire YAWL system.

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