JBPM API Initial Knowledge

JBPM provides us with a range of services for managing processes. From defining processes to instantiating process definitions, process instance execution, process management, process completion, historical processes, and management. JBPM 's process management provides a complete APIto improve the efficiency of process execution.

JBPM the services provided API for us to achieve:

(1) Process Deployment

(2) Process Instance

(3) Process Tasks

(4) Process History

Processengine provides a 6 a service API . processengine is built by The configuration class, which is generated by the workflow engine based on the configurations.

(1) Repositoryservice --Interface of the process Resource service. Provides deployment, query, delete, and other actions on the process definition

(2) Executionservice --interface of the Process Execution service. Provides an example of starting a process, performing a push, setting a process variable, and so on.

(3) Managementservice --interface of the Process management Control service.

(4) Taskservice --Task service interface. Provides operations such as creating, submitting, querying, saving, and deleting tasks.

(5) Historyservice --Process History service interface. Provides queries for records such as historical process instances, historical activity instances, and so on.

(6) Identityservice --The interface of the identity authentication service. Provides services related to process users, user groups, and group memberships.

PrivateRepositoryservice repositoryservice;// deployment Process Service

Privateexecutionservice executionservice;// Process Execution Service

Privatetaskservice taskservice;// Task Service

Privatehistoryservice historyservice;// History Service

Privatemanagementservice managementservice;// Process Management Services

Privateidentityservice identityservice;// identity Authentication Service

Processengineprocessengine = Configuration.getprocessengine ();

Repositoryservice=processengine.getrepositoryservice ();

Executionservice=processengine.getexecutionservice ();

Taskservice=processengine.gettaskservice ();

Historyservice=processengine.gethistoryservice ();

Managementservice=processengine.getmanagementservice ();

Identityservice=processengine.getidentityservice ();

}

1 , the deployment process definition

public void Deploy () {

Repositoryservice.createdeployment (). Addresourcefromclasspath ("Task.jpdl.xml"). Deploy ()

}

2. Start the process instance

Public Voidcreateinstance () {

Processinstanceprocessinstance = Executionservice.startprocessinstancebykey ("task");

print (" process instance ID", Processinstance.getid ());

}

3 , get personal tasks

Public void Get Personal Task (StringuserId) {

list<task>tasks=taskservice.findpersonaltasks (userId); // get personal tasks based on the name of the person who handles

print (" number of tasks ", tasks.size ());

print (" Task Name ", Tasks.get (0). Getactivityname ());

print (" task ID", Tasks.get (0). GetId ());

}

4 , gets the group task

Public void Get Grouptask s (String userId) {

list<task> taskList =processengine.gettaskservice (). Findgrouptasks (userId); // get group tasks according to the name of the person who processed

}

5 , assign Tasks

public void Assintask (String taskid,string userId) {

Taskservice. Assigntask (taskId,userId); // the Task Id to be taskId the tasks assigned to userId

}

6 , Pickup task

public void Tasktask (String taskid,string userId) {

Taskservice. Taketask (taskId,userId); // User userId Pickup Task taskId

}

5 to get the current task

Public void GetCurrent Task (String processinstanceid) { stringname=executionservice.createprocessinstancequery (). Processinstanceid (proce Ssinstanceid). Uniqueresult (). Findactiveactivitynames (). toString ();

// Depending on the process instance Id get the task you are currently performing

print (" current node name:", name);

}   

6 , complete the task

Public void Completetask (String taskId) {

taskservice.completetask (taskId); // according to the task Id , complete the task

}

......

JBPM Span lang= "ZH-CN" provides the entire process management of the service API jbpm provides api almost perfect, of course, there are a few imperfect places, but enough to apply. To be proficient in using the jbpm api Span lang= "ZH-CN" is the first step.

at present, the university JBPM the application arrangement, the first stage: complete several Demo , to be familiar with API and the second stage: combining the specific business in universities, combining JBPM , the third stage: according to the business JBPM the application of the public part of the abstract; Stage four: study back, sign, free flow, Fifth stage: revision, Perfection, sixth stage: application; seventh stage: maintenance, improvement

currently in the 23rd stage, that is, the start + Ascension phase.

JBPM API Initial Knowledge