Java Reference
In-Depth Information
public void contextInitialized(ServletContextEvent event) {
System.out.println("Initializing Workflow context...");
ServletContext context # event.getServletContext();
System.out.println("1) Definition of organization");
try {
// We define two basic example profiles: professor and
// student; they are actors that can interact with WFMS
Actor prof # new Actor("Prof Essor","professor");
Actor student # new Actor("John Learner","student");
WfEngine.Organization org # new WfEngine.Organization();
org.Add(prof);
org.Add(student);
context.setAttribute("organization",org);
System.out.println("2) Load definitions of processes");
// The processes are loaded from an xml file
WfEngine.Catalog cat # new WfEngine.Catalog();
DocumentBuilder parser # DocumentBuilderFactory.
newInstance().newDocumentBuilder();
Document doc # parser.parse(
context.getResourceAsStream("test.xml"));
cat.Add(WfProcessDefinition.loadDefinitions(doc));
context.setAttribute("catalog",cat);
} catch (Exception e){
e.printStackTrace();
e.toString();
}
System.out.println("WfMS Initialization Completed.");
}
public void contextDestroyed
(ServletContextEvent event) { }
}
The initial page is Login.jsp . To simplify the application we ignore all of the
security problems and allow the login without any authentication. The Login
page presents a list of actors the user can choose to impersonate; they are
taken from the actors registered within the organization.
<%@ page contentType # "text/html" language # "java" %>
<%@ page import # "WfEngine.*, java.util.Iterator" %>
<% Organization org # (Organization)application.getAttribute
("organization"); %>
<html><head><title> Workflow </title></head>
<body><h1> Workflow Login </h1>
<table >
<tr > <td align # "center">
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