Example usage for org.jfree.data XYSeries XYSeries

Introduction

In this page you can find the example usage for org.jfree.data XYSeries XYSeries.

Prototype

public XYSeries(final String name, final boolean autoSort, final boolean allowDuplicateXValues)

Source Link

Document

Constructs a new xy-series that contains no data.

Usage

From source file:org.jboss.console.plugins.monitor.ManageSnapshotServlet.java

protected void doit(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
    String action = req.getParameter("action");
    if (action == null) {
        error("unknown action: ", req, resp);
        return;//  w  w w  .j a v  a 2  s . c o m
    }
    action = action.trim();
    MBeanServer mbeanServer = MBeanServerLocator.locateJBoss();
    ObjectName monitorObjectName;
    String attribute = null;
    try {
        monitorObjectName = new ObjectName(req.getParameter("monitorObjectName"));
        attribute = (String) mbeanServer.getAttribute(monitorObjectName, "ObservedAttribute");
    } catch (Exception ex) {
        error("Malformed Monitor ObjectName: " + req.getParameter("monitorObjectName"), req, resp);
        return;
    }
    if (action.equals("Start Snapshot")) {
        Object[] nullArgs = {};
        String[] nullSig = {};
        try {
            mbeanServer.invoke(monitorObjectName, "startSnapshot", nullArgs, nullSig);
        } catch (Exception ex) {
            error("Problem invoking startSnapshot: " + ex.toString(), req, resp);
            return;
        }
        req.getRequestDispatcher("/manageSnapshot.jsp").forward(req, resp);
        return;
    } else if (action.equals("Stop Snapshot")) {
        Object[] nullArgs = {};
        String[] nullSig = {};
        try {
            mbeanServer.invoke(monitorObjectName, "endSnapshot", nullArgs, nullSig);
        } catch (Exception ex) {
            error("Problem invoking endSnapshot: " + ex.toString(), req, resp);
            return;
        }
        req.getRequestDispatcher("/manageSnapshot.jsp").forward(req, resp);
        return;
    } else if (action.equals("Clear Dataset")) {
        Object[] nullArgs = {};
        String[] nullSig = {};
        try {
            mbeanServer.invoke(monitorObjectName, "clearData", nullArgs, nullSig);
        } catch (Exception ex) {
            error("Problem invoking clearData: " + ex.toString(), req, resp);
            return;
        }
        req.setAttribute("error", "Dataset Cleared!");
        req.getRequestDispatcher("/manageSnapshot.jsp").forward(req, resp);
        return;
    } else if (action.equals("Remove Snapshot")) {
        try {
            log.debug("removing snapshot: " + monitorObjectName.toString());
            mbeanServer.unregisterMBean(monitorObjectName);
            req.getRequestDispatcher("/ServerInfo.jsp").forward(req, resp);
        } catch (Exception ex) {
            error("Failed to Remove Monitor: " + ex.toString(), req, resp);
        }
        return;
    } else if (action.equals("Show Dataset")) {
        ArrayList data = null;
        long start, end = 0;
        try {
            data = (ArrayList) mbeanServer.getAttribute(monitorObjectName, "Data");
            start = ((Long) mbeanServer.getAttribute(monitorObjectName, "StartTime")).longValue();
            end = ((Long) mbeanServer.getAttribute(monitorObjectName, "EndTime")).longValue();
        } catch (Exception ex) {
            error("Problem invoking getData: " + ex.toString(), req, resp);
            return;
        }
        resp.setContentType("text/html");
        PrintWriter writer = resp.getWriter();
        writer.println("<html>");
        writer.println("<body>");
        writer.println("<b>Start Time:</b> " + start + "ms<br>");
        writer.println("<b>End Time:</b> " + end + "ms<br>");
        writer.println("<b>Total Time:</b> " + (end - start) + "ms<br>");
        writer.println("<br><table border=\"0\">");
        for (int i = 0; i < data.size(); i++) {
            writer.println("<tr><td>" + data.get(i) + "</td></tr");
        }
        writer.println("</table></body></html>");
        return;
    } else if (action.equals("Graph Dataset")) {
        ArrayList data = null;
        long start, end = 0;
        try {
            data = (ArrayList) mbeanServer.getAttribute(monitorObjectName, "Data");
            start = ((Long) mbeanServer.getAttribute(monitorObjectName, "StartTime")).longValue();
            end = ((Long) mbeanServer.getAttribute(monitorObjectName, "EndTime")).longValue();
        } catch (Exception ex) {
            error("Problem invoking getData: " + ex.toString(), req, resp);
            return;
        }
        XYSeries set = new XYSeries(attribute, false, false);
        for (int i = 0; i < data.size(); i++) {
            set.add(new Integer(i), (Number) data.get(i));
        }
        DefaultTableXYDataset dataset = new DefaultTableXYDataset(false);
        dataset.addSeries(set);
        JFreeChart chart = ChartFactory.createXYLineChart("JMX Attribute: " + attribute, "count", attribute,
                dataset, PlotOrientation.VERTICAL, true, true, false);
        resp.setContentType("image/png");
        OutputStream out = resp.getOutputStream();
        ChartUtilities.writeChartAsPNG(out, chart, 400, 300);
        out.close();
        return;
    }
    error("Unknown Action", req, resp);
    return;
}