I. Technology

- Java 1.8 - Maven 3.3.9 - Spring Tool Suite – Version 3.8.1.RELEASE - Spring Boot: 1.5.3.RELEASE

II. Overview

1. Goal

To build a Spring Boot application that helps to manage process as below:

• We will create a group of persons and use Spring JPA to store their information.
• Then we assign:

• Check Hardware and Do Meeting to John.
• Check Software and Check Firmware to David.
• Write Report to Katherin.

• John’s tasks and David’s tasks can be handled in parallel. David doesn’t need to wait for any task which is assigned to John be done.

• Katherin is the assignee of Write Report task only if Check Hardware, Check Software and Check Firmware are done.

• After report is done, ‘notification’ message will be shown in the System Console.

2. Project Structure

• Process definition will be written under XML format in process/process.bpmn20.xml file.
• MyService provides service methods for Controller such as: startProcess(), getTasks(), completeTask(). Those functions can be done with help of some @Autowired objects which are instances of these classes:

• RepositoryService
• RuntimeService
• TaskService
• PersonRepository

• PersonRepository is an interface extends JpaRepository for implementing repository methods on Person entities.

• SpringParallelActivitiApplication class contains Bean that calls MyService's creating persons method when starting the application.

• MyController is a REST Controller which has request mapping methods for RESTful requests such as: /process, /tasks, /completetask.

• pom.xml contains dependencies for:

• Activiti Spring Boot Starter Basic, Activiti Spring Boot Starter JPA
• Spring Boot Starter Web
• H2 database
• Groovy: scripting engine for running Script Task in process.

More at:

https://grokonez.com/java-integration/activiti-parallel-tasks-jpa-with-spring-boot-example

How to create Activiti Parallel Tasks with Spring JPA + Spring Boot Example