// **********************************************************************// <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/Schema.java,v $// $Revision: 1.2.2.2 $ $Date: 2005/08/11 21:03:08 $ $Author: dietrick $// **********************************************************************package com.bbn.openmap.vpfservlet;import java.io.IOException;import java.io.PrintWriter;import javax.servlet.ServletException;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import com.bbn.openmap.layer.util.html.HtmlListElement;import com.bbn.openmap.layer.util.html.ListElement;import com.bbn.openmap.layer.util.html.StringElement;import com.bbn.openmap.layer.util.html.TableRowElement;import com.bbn.openmap.layer.util.html.WrapElement;import com.bbn.openmap.layer.vpf.DcwColumnInfo;import com.bbn.openmap.layer.vpf.DcwRecordFile;/** * A servlet class that will print the schema for a VPF table. */public class Schema extends VPFHttpServlet {    /**     * A do-nothing constructor - init does all the work.     */    public Schema() {        super();    }    public void doGet(HttpServletRequest request, HttpServletResponse response)            throws ServletException, IOException {        DcwRecordFile foo = (DcwRecordFile) request.getAttribute(DispatchServlet.RECORD_FILE_OBJ);        if (foo == null) {            response.sendError(HttpServletResponse.SC_BAD_REQUEST);            return;        }        String basepath = getRootDir(request);        String url = response.encodeURL(request.getContextPath()                + "/VPFHelp.jsp?topic=table_schema");        PrintWriter out = response.getWriter();        out.println("<H2>Table Schema</H2>");        out.println("<H3>General Table Information</H3>");        HtmlListElement list = new HtmlListElement();        list.addElement("Table Name: " + foo.getTableName());        list.addElement("Table Description: " + foo.getDescription());        list.addElement("DocFile Name: "                + fileURL(request,                        response,                        basepath,                        foo.getDocumentationFilename()));        int reclen = foo.getRecordLength();        String reclenstr = (reclen == -1) ? ("variable")                : (Integer.toString(reclen) + " bytes");        list.addElement("Record Length: " + reclenstr);        try {            list.addElement("Record Count: " + foo.getRecordCount());        } catch (com.bbn.openmap.io.FormatException fe) {            list.addElement("Record Count Error: " + fe.toString());        }        list.generate(out);        // out.println("<br><H3>Column Schema</H3>");        ListElement rows = new ListElement();        WrapElement table = new WrapElement("table", "BORDER=1", rows);        TableRowElement thr = new TableRowElement();        rows.addElement(new WrapElement("CAPTION", new StringElement("Column Schema")));        rows.addElement(thr);        thr.addElement(THE("#", url));        thr.addElement(THE("Name", url));        thr.addElement(THE("Type", url));        thr.addElement(THE("Count", url));        thr.addElement(THE("Key Type", url));        thr.addElement(THE("Description", url));        thr.addElement(THE("VDT", url));        thr.addElement(THE("Thematic Index", url));        thr.addElement(THE("DocFile", url));        DcwColumnInfo dci[] = foo.getColumnInfo();        for (int i = 0; i < dci.length; i++) {            TableRowElement tr = new TableRowElement();            rows.addElement(tr);            tr.addElement(Integer.toString(i));            tr.addElement(dci[i].getColumnName());            tr.addElement(String.valueOf(dci[i].getFieldType()));            int elts = dci[i].getNumberOfElements();            tr.addElement(elts == -1 ? "*" : Integer.toString(elts));            tr.addElement(String.valueOf(dci[i].getKeyType()));            tr.addElement(dci[i].getColumnDescription());            tr.addElement(fileURL(request, response, basepath, dci[i].getVDT()));            tr.addElement(thematicURL(request,                    response,                    basepath,                    dci[i].getThematicIndexName()));            tr.addElement(docURL(request,                    response,                    basepath,                    dci[i].getNarrativeTable()));        }        table.generate(response.getWriter());    }    public static String thematicURL(HttpServletRequest request,                                     HttpServletResponse response,                                     String pathname, String filename) {        return toURL(request, response, "/Thematic", pathname, filename);    }    public static String docURL(HttpServletRequest request,                                HttpServletResponse response, String pathname,                                String filename) {        return toURL(request, response, "/DocFile", pathname, filename);    }}