Business Process Management Concepts Models Events Mathias Weske - - PowerPoint PPT Presentation

Business Process Management

Concepts – Models – Events

Mathias Weske Hasso Plattner Institute, University of Potsdam

Mathias Weske – BPM Intro. Schloss Dagstuhl, August 2016 1 - 2

Business Process

• A business process consists of a set of activities that are

performed in coordination in an organizational and technical environment.

• These activities jointly realize a business goal.

A business process model is an abstract representation of a business process, serving a modeling goal.

Mathias Weske – BPM Intro. Schloss Dagstuhl, August 2016 1 - 3

Business Process Lifecycle

• Organizes

phases of business processes

Mathias Weske – BPM Intro. Schloss Dagstuhl, August 2016 1 - 4

• “A business process consists of a set of activities …”

The Definition in Detail

• “… that are performed in coordination”

Mathias Weske – BPM Intro. Schloss Dagstuhl, August 2016 1 - 5

• Process instances contain activity instances

Processes, Activity Instances, …

• Each activity instance traverses a series of states
• State transitions

correspond to events

Mathias Weske – BPM Intro. Schloss Dagstuhl, August 2016 1 - 6

… and Events

• A process constrains the occurrence of events
• Lifecycle events and process events
• Job of a process engine
• Events are happenings in the real world that
• have a business

meaning

• do not take time
• are atomic

Mathias Weske – BPM Intro. Schloss Dagstuhl, August 2016 1 - 7

Process Enactment

Mathias Weske – BPM Intro. Schloss Dagstuhl, August 2016 1 - 8

Catching and Throwing Events

• Catching events
• The event happens in the environment and its occurrence has an

effect on a process instance

• Throwing events
• The event is created by a process instance

Mathias Weske – BPM Intro. Schloss Dagstuhl, August 2016 1 - 9

Intermediate Events

• Come in both flavors
• Catching
• The process waits for the occurrence of the event
• Example: Expiration of a timer
• Throwing
• The process emits the event and continues with the outgoing

sequence flow

• Example: Sending of a message

Mathias Weske – BPM Intro. Schloss Dagstuhl, August 2016 1 - 10

Boundary Events

• Are on the boundary of activities
• Are always catching
• The occurrence of a boundary event is only relevant, if it occurs

while the activity is running

Mathias Weske – BPM Intro. Schloss Dagstuhl, August 2016 1 - 11

Racing Events

• Race condition between boundary event and sub-process

termination

Mathias Weske – BPM Intro. Schloss Dagstuhl, August 2016 1 - 12

Event-based Gateway

• Gateway selects from a number of racing events the one

that occurs first

• Decision is taken by the process environment, not by the process

Mathias Weske – BPM Intro. Schloss Dagstuhl, August 2016 1 - 13

Events in Process Management

• Easy if process engine in place
• No process engines in logistics, health care, mobility, energy
• GET Service EU project
• Transportation processes in multi modal processes
• Use CEP systems to detect process events

Mathias Weske – BPM Intro. Schloss Dagstuhl, August 2016 1 - 14

Relating Events to the Process

Mathias Weske – BPM Intro. Schloss Dagstuhl, August 2016 1 - 15

BPT Architecture: Subsystems …

XDK- Sensor Sensor Gateway Unicorn Chimera Gryphon Model Repository Cl Web

Browser

Client

Cl Web

Browser

Client

HTTP HTTP R R REST USB / Wifi SOAP / REST SOAP/ REST ACTIVE MQ / REST

Mathias Weske – BPM Intro. Schloss Dagstuhl, August 2016 1 - 16

… and how they interact

16

XDK- Sensor Sensor Gateway Unicorn Chimera Gryphon Model Repository Cl Web

Browser

Client

Cl Web

Browser

Client

HTTP HTTP R R REST USB / Wifi SOAP / REST SOAP/ REST ACTIVE MQ / REST

(1) Publish Process Model (2) Register Event Types and Event Queries (3) Send Events (raw event) (4) Forward Events (5) Notification (6) React to Events

Mathias Weske – BPM Intro. Schloss Dagstuhl, August 2016 1 - 17

Recap

• Events are essential in business processes
• Process events and lifecycle events
• Processes constrain the order in which events can occur
• Processes are mainly about atomic events
• Process engines are event processing systems
• Process enactment with CEP
• CEP engine detects process relevant events
• Support for non-automated processes
• Question I like to discuss
• Are CEP engines the better process engines?
• Roles of CEP in BPM, beyond monitoring?