here it is.
you need to print via JSPout the output. to see.
th function get the process instance id
| public StringBuffer showProcessImage (long processInstanceId) {
| byte[] gpdBytes = null;
| byte[] imageBytes = null;
| Token currentToken=null;
| String currentTokenColor = "red";
| long taskInstanceId=0;
| StringBuffer Sb = new StringBuffer();
| TaskInstance taskInstance=null;
| JbpmContext context = conf.createJbpmContext();
| GraphSession graphSession = context.getGraphSession();
| ProcessInstance pi =
graphSession.loadProcessInstance(processInstanceId);
|
| TaskMgmtInstance tmi = pi.getTaskMgmtInstance();
| try {
| Collection tis = tmi.getUnfinishedTasks(pi.getRootToken());
|
| Iterator taskInstances = tis.iterator();
| if (taskInstances.hasNext()) {
| TaskInstance ti = (TaskInstance)taskInstances.next();
| taskInstanceId = ti.getId();
| taskInstance =
context.getTaskMgmtSession().loadTaskInstance(taskInstanceId);
| }
| else //process has finished
| {
| Collection allTasks = tmi.getTaskInstances();
| Iterator AlltaskInstances = allTasks.iterator();
| TaskInstance LastInstance=null;
| while (AlltaskInstances.hasNext()) {
| LastInstance =
(TaskInstance)AlltaskInstances.next();
| }
| taskInstanceId = LastInstance.getId();
| taskInstance =
context.getTaskMgmtSession().loadTaskInstance(taskInstanceId);
| }
|
| currentToken = taskInstance.getToken();
| ProcessDefinition processDefinition =
currentToken.getProcessInstance().getProcessDefinition();
| //String NodeName =
currentToken.getProcessInstance().getRootToken().getNode().getName();
|
| FileDefinition fileDefinition =
processDefinition.getFileDefinition();
| if (fileDefinition == null) {
| fileDefinition = new FileDefinition();
| processDefinition.addDefinition(fileDefinition);
| }
|
| String Path =
Configuration.instance().GetParameter("","ProcessPath");
|
| Path += processDefinition.getName();
|
| addFileResourceToFileDefinition(fileDefinition, Path,
"processimage.jpg");
| addFileResourceToFileDefinition(fileDefinition, Path,
"gpd.xml");
|
|
| if (new File(Path + "\\gpd.xml").exists())
| {
| //if(fileDefinition!=null)
| //{
| //gpdBytes = fileDefinition.getBytes("gpd.xml");
| gpdBytes =
processDefinition.getFileDefinition().getBytes("gpd.xml");
| imageBytes =
processDefinition.getFileDefinition().getBytes("processimage.jpg");
|
| if (gpdBytes != null && imageBytes != null) {
| int borderWidth = 4;
| Element rootDiagramElement =
DocumentHelper.parseText(new String(gpdBytes)).getRootElement();
| int[] boxConstraint;
| int[] imageDimension =
extractImageDimension(rootDiagramElement);
| //String imageLink =
"processimage?definitionId="+ processDefinition.getId();
| String imageLink = Path + "\\processimage.jpg";
|
|
| //jspOut.println("</div>");
| //}
| //else {
| boxConstraint =
extractBoxConstraint(rootDiagramElement,currentToken);
|
| Sb.append("<script language='javascript'>");
| Sb.append("window.contentHeight = " + imageDimension[1]
+";");
| Sb.append("window.contentWidth=" +
imageDimension[0]+";");
| Sb.append("</script>");
| Sb.append("<table border=0 cellspacing=0 cellpadding=0
width="
| + imageDimension[0]
| + "
height="
| +
imageDimension[1] + ">");
| Sb.append(" <tr>");
| Sb.append(" <td width=" + imageDimension[0]
|
+ " height=" + imageDimension[1]
|
+ " style=\"background-image:url(" +
imageLink
|
+ ")\" valign=top>");
| Sb.append(" <table border=0 cellspacing=0
cellpadding=0>");
| Sb.append(" <tr>");
| Sb.append(" <td width="
| + (boxConstraint[0] - borderWidth)
| + " height="
| + (boxConstraint[1] - borderWidth)
| + "
style=\"background-color:transparent;\"></td>");
|
|
| Sb.append(" </tr>");
| Sb.append(" <tr>");
| Sb.append(" <td
style=\"background-color:transparent;\"></td>");
| Sb.append(" <td style=\"border-color:"
| + currentTokenColor
| + "; border-width:"
| + borderWidth
| + "px; border-style:groove;
background-color:transparent;\" width="
| + boxConstraint[2]
| + " height="
| + (boxConstraint[3] + (2 * borderWidth))
| + "> </td>");
| Sb.append(" </tr>");
| Sb.append(" </table>");
| Sb.append(" </td>");
| Sb.append(" </tr>");
| Sb.append("</table>");
| }
| }
| }
| catch (Exception e) {
| e.printStackTrace();
| //throw new JspException("table couldn't be displayed",
e);
| }
|
| context.close();
|
| taskInstanceId = -1;
| gpdBytes = null;
| imageBytes = null;
| currentToken = null;
| return Sb;
| }
|
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