1 Reply Latest reply on Jul 26, 2007 4:06 AM by Jean-Louis Rastapoc

    how can i show a graph of the instance that i specify ?

    yair friedman Newbie

      hi,

      i am trying to show the graph of the current task in the process instance that i pass by the taskInstanceId parameter.
      today i can see the general graph of the process , not of the
      instance of the process .
      the error in on :
      gpdBytes = fileDefinition.getBytes("gpd.xml");

      because the fileDefinition comes out null.
      should i insert a file definition to the processdefinition.xml ?
      and if so - how ?


       final long serialVersionUID = 1L;
       long taskInstanceId = -1;
       long tokenInstanceId = -1;
      
       byte[] gpdBytes = null;
       byte[] imageBytes = null;
       Token currentToken = null;
       ProcessDefinition processDefinition = null;
      
       String currentTokenColor = "red";
       String childTokenColor = "blue";
       String tokenNameColor = "blue";
      
       ProcessImageJbpm PIJ = new ProcessImageJbpm();
      
       String tempInsId = DBDate.nullstring(request
       .getParameter("TaskInstanceId"));
      
       if (tempInsId.equals(""))
       tempInsId = "0";
      
       long TaskInstanceId = Long.parseLong(tempInsId);
      
       try {
      
       JbpmConfiguration jbpmConfiguration = JbpmConfiguration.getInstance();
       JbpmContext jbpmContext = jbpmConfiguration.createJbpmContext();
      
       TaskInstance taskInstance = jbpmContext.getTaskMgmtSession().loadTaskInstance(TaskInstanceId);
      
       currentToken = taskInstance.getToken();
      
       processDefinition = currentToken.getProcessInstance().getProcessDefinition();
      
       PIJ.setCurrentToken(currentToken);
      
      
       FileDefinition fileDefinition = processDefinition.getFileDefinition();
       if(fileDefinition!=null)
       {
       gpdBytes = fileDefinition.getBytes("gpd.xml");
       imageBytes = fileDefinition.getBytes("processimage.jpg");
      
       if (gpdBytes != null && imageBytes != null) {
       int borderWidth = 4;
       Element rootDiagramElement = DocumentHelper.parseText(
       new String(gpdBytes)).getRootElement();
       int[] boxConstraint;
       int[] imageDimension = PIJ
       .extractImageDimension(rootDiagramElement);
       String imageLink = "processimage?definitionId="
       + processDefinition.getId();
      
       if (tokenInstanceId > 0) {
      
       List allTokens = new ArrayList();
       allTokens = PIJ.walkTokens(currentToken, allTokens);
      
       out.println("<div style='position:relative; background-image:url("
       + imageLink
       + "); width: "
       + imageDimension[0]
       + "px; height: "
       + imageDimension[1] + "px;'>");
      
       for (int i = 0; i < allTokens.size(); i++) {
       Token token = (Token) allTokens.get(i);
      
       //check how many tokens are on teh same level (= having the same parent)
       int offset = i;
       if (i > 0) {
       while (offset > 0&& ((Token) allTokens.get(offset - 1)).getParent().equals(token.getParent())) {
       offset--;
       }
       }
       boxConstraint = PIJ.extractBoxConstraint(rootDiagramElement, token);
      
       //Adjust for borders
       boxConstraint[2] -= borderWidth * 2;
       boxConstraint[3] -= borderWidth * 2;
      
       out.println("<div style='position:absolute; left: "
       + boxConstraint[0] + "px; top: "
       + boxConstraint[1] + "px; ");
      
       if (i == (allTokens.size() - 1)) {
       out.println("border: " + currentTokenColor);
       } else {
       out.println("border: " + childTokenColor);
       }
      
       out.println(" " + borderWidth + "px groove; "
       + "width: " + boxConstraint[2]
       + "px; height: " + boxConstraint[3]
       + "px;'>");
      
       if (token.getName() != null) {
       out.println("<span style='color:"
       + tokenNameColor
       + ";font-style:italic;position:absolute;left:"
       + (boxConstraint[2] + 10)
       + "px;top:"
       + ((i - offset) * 20)
       + ";'> " + token.getName()
       + "</span>");
       }
      
       out.println("</div>");
       }
       out.println("</div>");
       } else {
       boxConstraint = PIJ.extractBoxConstraint(rootDiagramElement);
      
       out.println("<table border=0 cellspacing=0 cellpadding=0 width="
       + imageDimension[0]
       + " height="
       + imageDimension[1] + ">");
       out.println(" <tr>");
       out.println(" <td width=" + imageDimension[0]
       + " height=" + imageDimension[1]
       + " style=\"background-image:url(" + imageLink
       + ")\" valign=top>");
       out.println(" <table border=0 cellspacing=0 cellpadding=0>");
       out.println(" <tr>");
       out.println(" <td width="
       + (boxConstraint[0] - borderWidth)
       + " height="
       + (boxConstraint[1] - borderWidth)
       + " style=\"background-color:transparent;\"></td>");
       out.println(" </tr>");
       out.println(" <tr>");
       out.println(" <td style=\"background-color:transparent;\"></td>");
       out.println(" <td style=\"border-color:"
       + currentTokenColor
       + "; border-width:"
       + borderWidth
       + "px; border-style:groove; background-color:transparent;\" width="
       + boxConstraint[2]
       + " height="
       + (boxConstraint[3] + (2 * borderWidth))
       + "> </td>");
       out.println(" </tr>");
       out.println(" </table>");
       out.println(" </td>");
       out.println(" </tr>");
       out.println("</table>");
       }
       out.flush();
       }
       }
       }
       catch (IOException e) {
       e.printStackTrace();
       //throw new JspException("table couldn't be displayed", e);
       }
       catch (DocumentException e)
       {
       e.printStackTrace();
       }
       //throw new JspException("table couldn't be displayed", e);
       catch (Exception e) {
       e.printStackTrace();
       }
      
       taskInstanceId = -1;
       gpdBytes = null;
       imageBytes = null;
       currentToken = null;