[jboss-user] [jBPM] - SOA-P Creating Custom GUIs for jBPM

<%@ page language="java" contentType="text/html; charset=UTF-8"     pageEncoding="UTF-8" import="java.util.*,org.jbpm.graph.exe.*,org.jbpm.graph.def.*,org.jbpm.*,org.jbpm.db.*,org.jbpm.taskmgmt.exe.*"%> <%! ////////////////////////////////////////////////////////////////////// // // Section 1:  Helper functions // ////////////////////////////////////////////////////////////////////// public void deployDefaultProcessDefinition(JbpmContext context) {          //You probably would never deploy processes this way, instead would deploy them from JBoss     //Developer Studio or Ant.  However, this mechanism allows this JSP to create     //process definitions if none have been deployed.     context.deployProcessDefinition(ProcessDefinition.parseXmlInputStream(             this.getClass().getResourceAsStream("/processDefinition.xml"))); } public static List<ProcessDefinition> GetProcessDefinitions(JbpmContext context) {     GraphSession session = context.getGraphSession();     return session.findAllProcessDefinitions(); } public static void DeleteProcessDefinition(JbpmContext context, long definitionId) {     GraphSession session = context.getGraphSession();     session.deleteProcessDefinition(definitionId); } public static List<ProcessInstance> GetProcessInstances(JbpmContext context, long definitionId) {     GraphSession session = context.getGraphSession();     return session.findProcessInstances(definitionId); } public static void CreateProcessInstance(JbpmContext context, long definitionId) {     GraphSession session = context.getGraphSession();     ProcessInstance process = session.getProcessDefinition(definitionId).createProcessInstance();     context.save(process); } public static void DeleteProcessInstance(JbpmContext context, long instanceId) {     GraphSession session = context.getGraphSession();     session.deleteProcessInstance(instanceId); } public static List<TaskInstance> GetUserTasks(JbpmContext context, String user) {     return (List<TaskInstance>)context.getTaskList(user); } public static void SubmitTask(JbpmContext context, long taskId, String properties) {     Map<String,String> propMap = new TreeMap<String,String>();     String[] propArray = properties.split(",");     for(String prop : propArray) {         String[] propPieces = prop.split("=");         propMap.put(propPieces[0].trim(), propPieces[1].trim());     }         TaskInstance task = context.getTaskInstance(taskId);     task.start();     task.addVariables(propMap);        task.end(); } public static void SignalToken(JbpmContext context, long tokenId) {     Token token = context.getTokenForUpdate(tokenId);     token.signal(); } public static void MoveToken(JbpmContext context, long tokenId) {     Token token = context.getTokenForUpdate(tokenId);     //Should call signal, but can't do this because some processes     //require real data to be there...     //token.signal();     //Instead, we'll find all the nodes and move to the next or end the process.     //This is not reality, but for demonstration     Node currentNode = token.getNode();     ProcessInstance processInstance = token.getProcessInstance();     List<Node> nodes = processInstance.getProcessDefinition().getNodes();     for(int i=0; i<nodes.size(); i++) {                 //If we found the current node and there are more available...         if(nodes.get(i).getId() == currentNode.getId() && (i+1) < nodes.size()) {             token.setNode(nodes.get(i+1));             continue;         }     } } %> <% ////////////////////////////////////////////////////////////////////// // // Section 2:  Controller logic // ////////////////////////////////////////////////////////////////////// JbpmContext context = JbpmConfiguration.getInstance().createJbpmContext(); String action = request.getParameter("action"); if(action != null) {     if(action.startsWith("CreateInstance")) {         long definitionId = Long.parseLong(action.split(" ")[1]);         CreateProcessInstance(context, definitionId);     }     else if(action.startsWith("DeleteInstance")) {         long definitionId = Long.parseLong(action.split(" ")[1]);         DeleteProcessInstance(context, definitionId);     }     else if(action.startsWith("Signal")) {         long definitionId = Long.parseLong(action.split(" ")[1]);         SignalToken(context, definitionId);     }     else if(action.startsWith("Move")) {         long definitionId = Long.parseLong(action.split(" ")[1]);         MoveToken(context, definitionId);     }     else if(action.startsWith("DeleteDefinition")) {         long definitionId = Long.parseLong(action.split(" ")[1]);         DeleteProcessDefinition(context, definitionId);     }     else if(action.startsWith("DeployDefaultProcessDefinition")) {         deployDefaultProcessDefinition(context);     }     else if(action.startsWith("SubmitTask")) {         SubmitTask(context, Long.parseLong(action.split(" ")[1]), request.getParameter("properties"));     } } ////////////////////////////////////////////////////////////////////// // // Section 3:  Rendering the GUI // ////////////////////////////////////////////////////////////////////// %> <html> <body> <form method="POST"> <table border="1" cellpadding="5" cellspacing="1"> <tr bgcolor="#aaaaff"><td>Tasks for user    <select name="username" onchange="form.submit()">       <option value="Aaron" <%=("Aaron".equals(request.getParameter("username"))?"SELECTED=\"SELECTED\"":"")%>>Aaron</option>       <option value="Bob" <%=("Bob".equals(request.getParameter("username"))?"SELECTED=\"SELECTED\"":"")%>>Bob</option>    </select>    <input type="submit" value="Refresh"/></td></tr> <% for(TaskInstance task : GetUserTasks(context, request.getParameter("username"))) { %> <tr bgcolor="#eeeeff"><td>Task: <%=task.getName()%> <input type="submit" name="action" value="SubmitTask <%=task.getId()%>"/> Add Properties to Process: <input type="text" name="properties" value="key1=val1, key2=val2"/> </td></tr> <% } %> <tr><td></td></tr> <tr bgcolor="#0000ff"><td align="center"> <input type="submit" name="action" value="DeployDefaultProcessDefinition"/> </td></tr> <% List<ProcessDefinition> processDefinitions = GetProcessDefinitions(context); for(ProcessDefinition definition : processDefinitions) {     out.println("<tr bgcolor=\"#aaaaff\"><td nowrap><b><font size=\"+1\">");     out.println(definition.getName());     out.println("(version " + definition.getVersion() + ")</font></b>");     out.println("<input type=\"submit\" name=\"action\" value=\"CreateInstance " + definition.getId() + "\"/>");     out.println("<input type=\"submit\" name=\"action\" value=\"DeleteDefinition " + definition.getId() + "\"/>");     out.println("</td></tr>");         for(ProcessInstance instance : GetProcessInstances(context, definition.getId())) {         out.println("<tr bgcolor=\"#eeeeff\"><td>");         out.println("  Instance #" + instance.getId() + " <input type=\"submit\" name=\"action\" value=\"DeleteInstance " + instance.getId() + "\"/>");         Map<?,?> variables = instance.getContextInstance().getVariables();         if(variables != null && variables.entrySet() != null) {         for(Map.Entry<?,?> e : variables.entrySet()) {             out.println(e.getKey() +" = " + e.getValue());         }} else {             out.println("No variables");         }         List<Node> nodes = instance.getProcessDefinition().getNodes();                 Token token = (Token)instance.findAllTokens().get(0);         Node currentNode = token.getNode();         for(Node node : nodes) {             out.println("<br>    Node: " + node.getName());             if(node.getId()  == currentNode.getId()) {                 out.println("<font color=\"red\"> - (active)</font>");                                 //If not the last node                 if(node.getId() != nodes.get(nodes.size()-1).getId()) {                     out.println(" <input type=\"submit\" name=\"action\" value=\"Signal " + token.getId() + "\"/>");                     out.println(" <input type=\"submit\" name=\"action\" value=\"Move " + token.getId() + "\"/>");                 }             }         }         out.println("</td></tr>");     } } context.close(); %> </table> </form> </body> </html>

JbpmContext context = JbpmConfiguration.getInstance().createJbpmContext(); GraphSession session = context.getGraphSession(); //Get process defintion, processes, tasks, signal, submit, etc. context.close();