// **********************************************************************// <copyright>//  BBN Technologies//  10 Moulton Street//  Cambridge, MA 02138//  (617) 873-8000// //  Copyright (C) BBNT Solutions LLC. All rights reserved.// </copyright>// **********************************************************************// $Source: /cvs/distapps/openmap/src/vpfservlet/WEB-INF/src/com/bbn/openmap/vpfservlet/SpatialGraphicServlet.java,v $// $Revision: 1.2.2.2 $ $Date: 2005/08/11 21:03:07 $ $Author: dietrick $// **********************************************************************package com.bbn.openmap.vpfservlet;import java.awt.Color;import java.awt.Graphics2D;import java.awt.image.BufferedImage;import java.io.IOException;import java.util.HashMap;import javax.servlet.ServletException;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import com.bbn.openmap.io.FormatException;import com.bbn.openmap.layer.util.html.HtmlListElement;import com.bbn.openmap.layer.util.html.ListElement;import com.bbn.openmap.layer.util.html.TableHeaderElement;import com.bbn.openmap.layer.util.html.TableRowElement;import com.bbn.openmap.layer.vpf.DcwSpatialIndex;/** * This servlet generates HTML for VPF files in spatial index format. */public class SpatialGraphicServlet extends VPFHttpServlet {    /**     * A do-nothing constructor - init does all the work.     */    public SpatialGraphicServlet() {        super();    }    public void doGet(HttpServletRequest request, HttpServletResponse response)            throws ServletException, IOException {        String filePath = (String) request.getAttribute(DispatchServlet.ROOTPATH_FILENAME);        if (filePath == null) {            String pathInfo = setPathInfo(request);            filePath = contextInfo.resolvePath(pathInfo);            if (!pathOkay(filePath, pathInfo, response)) {                return;            }        }        response.setContentType("image/gif");        int width = 200;        int height = 200;        int imageType = BufferedImage.TYPE_INT_ARGB;        BufferedImage bufferedImage = new BufferedImage(width, height, imageType);        Graphics2D g2d = bufferedImage.createGraphics();        g2d.setClip(0, 0, width, height);        g2d.setColor(Color.red);        g2d.drawLine(10, 10, 95, 95);        g2d.drawLine(105, 105, 190, 190);        g2d.drawRect(1, 1, 198, 198);        g2d.dispose();        // byte [] imageData = AcmeGifHelper.encodeGif(bufferedImage);        // ServletOutputStream sos = response.getOutputStream();        // sos.write(imageData);        String filename = filePath;        String tableMatch = getIndexedTable(filename);        if (tableMatch == null) {            tableMatch = "non-standard spatial index";        } else {            tableMatch = fileURL(request,                    response,                    getRootDir(request),                    tableMatch);        }        try {            DcwSpatialIndex ff = new DcwSpatialIndex(filePath.toString(), false);            printSpatial(request, response, ff);            ff.close();        } catch (FormatException fe) {        }    }    public void printSpatial(HttpServletRequest request,                             HttpServletResponse response, DcwSpatialIndex si)            throws com.bbn.openmap.io.FormatException, IOException {        int width = 200;        int height = 200;        int imageType = BufferedImage.TYPE_INT_ARGB;        BufferedImage bufferedImage = new BufferedImage(width, height, imageType);        Graphics2D g2d = bufferedImage.createGraphics();        g2d.setClip(0, 0, width, height);        g2d.setColor(Color.red);        g2d.drawLine(10, 10, 95, 95);        g2d.drawLine(105, 105, 190, 190);        g2d.drawRect(1, 1, 198, 198);        g2d.dispose();        // byte [] imageData = AcmeGifHelper.encodeGif(bufferedImage);        // ServletOutputStream sos = response.getOutputStream();        // sos.write(imageData);        HtmlListElement list = new HtmlListElement();        list.addElement("Number Of Primitives: " + si.getNumberOfPrimitives());        int nodesInTree = si.getNodesInTree();        list.addElement("Nodes in Tree: " + nodesInTree);        list.addElement("Bounding Rectangle: (" + si.getBoundingX1() + ", "                + si.getBoundingY1() + ") - (" + si.getBoundingX2() + ", "                + si.getBoundingY2() + ")");        TableRowElement columnNames = new TableRowElement();        columnNames.addElement(new TableHeaderElement("Primitive ID"));        columnNames.addElement(new TableHeaderElement("x1"));        columnNames.addElement(new TableHeaderElement("x2"));        columnNames.addElement(new TableHeaderElement("y1"));        columnNames.addElement(new TableHeaderElement("y2"));        for (int i = 0; i < nodesInTree; i++) {            int count = si.getPrimitiveCount(i);            //int offset = si.getPrimitiveOffset(i);            DcwSpatialIndex.PrimitiveRecord pr[] = si.getPrimitiveRecords(i);            if (count == 0) {            } else {                ListElement rows = new ListElement();                //WrapElement table = new WrapElement("table", "BORDER=1", rows);                rows.addElement(columnNames);                for (int j = 0; j < pr.length; j++) {                    DcwSpatialIndex.PrimitiveRecord pr1 = pr[j];                    TableRowElement datarow = new TableRowElement();                    rows.addElement(datarow);                    datarow.addElement(Integer.toString(pr1.primId));                    datarow.addElement(Short.toString(pr1.x1));                    datarow.addElement(Short.toString(pr1.x2));                    datarow.addElement(Short.toString(pr1.y1));                    datarow.addElement(Short.toString(pr1.y2));                }            }        }    }    /** a map from spatial index name to primitive file indexed */    private HashMap indexTableMap;    /**     * Returns the name of the primitive file that the spatial index     * is for.     *      * @param indexName the name of the index     * @return the name of the primitive file     */    public String getIndexedTable(String indexName) {        if (indexTableMap == null) {            HashMap newMap = new HashMap();            newMap.put("esi", "edg");            newMap.put("esi.", "edg.");            newMap.put("fsi", "fac");            newMap.put("fsi.", "fac.");            newMap.put("csi", "cnd");            newMap.put("csi.", "cnd.");            newMap.put("nsi", "end");            newMap.put("nsi.", "end.");            newMap.put("tsi", "txt");            newMap.put("tsi.", "txt.");            indexTableMap = newMap;        }        return (String) indexTableMap.get(indexName);    }}