Camunda Consulting Examples

This repository contains examples, code snippets and demo applications build by the Camunda Consulting Team or contributors. Note: All examples are only tested manually and there is no guarantee that they are actively maintained. If you search for officially maintained examples go to https://github.com/camunda/camunda-bpm-examples.

Type of Example	Description
Show Cases	Complete demo applications showing more complex scenarios
Snippets	Code snippets for particular technical issues
One-time Examples	Examples created once for a specific event (like a conference or a magazine article). The code is not maintained and might be out-of-date.

Showcases

Review Process for new Tweets	Key Features showcased: Complete Process Application HTML or JSF task forms Testing with camunda-bpm-assert and PowerMock + Mockito [todo] Cycle with Collaboration [todo] Retries and Incident Handling
Camel Use Cases	Key Features showcased: Features of Camel Component, especially including messaging
Insurance Underwriting	Key Features showcased: CMMN Case UI in JSF Combination of BPMN, CMMN and Rules
Incident Handling	Key Features showcased: Working process from official OMG by example paper BPMN Collaboration
Skill-based-Routing	Key Features showcased: DMN Decision Tables Decision Flow implementing a DMN Decision Requirement Diagram (DRD)

Snippets

Human Task Management

Preview	Name	Description
	Subtask Checklist	BPMN process with sub tasks configured on a User Task using BPMN Extension Elements. The Subtasks are shown in the HTML task form using the Camunda Forms SDK (JavaScript). A User Task can only be completed if all subtasks are completed beforehand.
	Simple tasklist build with JSF	A tasklist to show how to use the engine api inside a JSF application. It calls forms, completes tasks and shows the detail process diagram with bpmn.io
	Watch Task Due Date and Automatically Take Action	A Process engine Plugin which registers Jobs for all User Tasks having a due date. It allows to define an own JobHandler to take action whenever a due date is hit, e.g sending an email.
	Dynamic single task process	A highly configurable process to get toDo items into your task list

BPMN

Preview	Name	Description
	BPMN Signal Events between Parallel Branches	This example shows how to interrupt a Task in a parallel flow within the same process instance by using a BPMN Signal Event.
	Translate your process model on the fly	Translate the BPMN XML on the fly using XPath and render the result (in the correct language) via bpmn.io
	Call Activity sets local variable	Shows how to set a local variable in a parent process based on the variable of a child process invoked by a Call Activity.
	Split Order Item Handling via OR Gateway	Assume only a few items of an order are decided in one go - but the approved ones need to get processed right away. This is modeled using an OR Gateway and local variables.
	Workaround to realize BPMN AdHoc Subpocess	The BPMN AdHoc Subprocess is not specified to be executable, hence camunda BPM cannot execute it out-of-the-box. This snippet shows a possile workaround.
	Non-interrupting Message Event Sub-Process inside a Sub-Process	An example showing that a Sub-Process is not finished until a contained Event Sub-Process has reached its end.

Camunda Webapp (Tasklist & Cockpit)

Preview	Name	Description
	Webapp Customizing	Shows how to build a customized webapp (own logo, colors, language, plugins, ...) by using Maven Overlay.
	Various Cockpit Plugins	The Plugin Store lists various available cockpit plugins, including the consulting snippets.
	Tasklist Plugin: Easy Search	Plugin that provides a "Google-like" search bar for tasks.
	Tasklist Plugin: Extended External Forms	Plugin that provides a customized and better looking external forms hook.

bpmn.io

Preview	Name	Description
	Plain HTML page showing Process Instance status	Shows how to build a self-contained HTML page with bpmn.io showing the process model and add overlays and markers to show historical information.

DMN

Preview	Name	Description
	DMN dependant decisions	How to evaluate dependant DMN decisions on the Camunda BPM platform.

CMMN

CMMN Human Task Listener in a Process Engine Plugin

Using task listener in all CMMN Human Tasks.

Process Engine Plugins

Preview	Name	Description
	Making parallel joins asynchronous	To avoid optimistic lock exceptions on heavy load processes, this plugin makes each joining gateway asynchronous without further configuration in the process diagram.
	authenticatedUserId after Asynchronous Continuation	To use the userId after asynchronous continuation, this plugin puts it from the history on the current thread.
	Authorized User Tasks	Only authorized users are able to complete a task. Obsolete since 7.3. Use Authorization-Service instead.
	History Variable Filter	How to store only one of many variables in the history.
	Change Number of Job Retries	This snippet shows how to change the number of retries for all jobs without touching the process diagrams.
	Extend serialization of process variables	This snippets exends the serialization of process variables for special classes, builds a jboss module with a maven plugin and shows how to use complex objects in a process application.
	Engine Plugin: Add Save Points	A plugin that automatically adds save points, i.e. asyncronous continuation or transaction boundaries, to certain BPMN elements.

Runtime Environments

Preview	Name	Description
	Java-based Spring container configuration	Run the process application in a Spring container with java-based configuration on a shared process engine.
	Embedded Process Engine without Spring	A Process Application containing an embedded process engine that is configured in the processes.xml file and therefore does not require the Spring Framework as a dependency.

Testing

Preview	Name	Description
	BPMN Validation with the Parser of the Process Engine	A minimal environment for validating BPMN processes using an in-memory process engine in a JUnit test.

Administration

Preview	Name	Description
	How to clean up the history tables	Solutions to clean up the history from old completed process instances.