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/**
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* '$RCSfile$'
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* Purpose: A Class that implements a metadata catalog as a java Servlet
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* Copyright: 2000 Regents of the University of California and the
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* National Center for Ecological Analysis and Synthesis
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* Authors: Matt Jones, Dan Higgins, Jivka Bojilova
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*
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* '$Author: bojilova $'
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* '$Date: 2000-08-02 16:26:35 -0700 (Wed, 02 Aug 2000) $'
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* '$Revision: 311 $'
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*/
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package edu.ucsb.nceas.metacat;
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import java.io.PrintWriter;
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import java.io.IOException;
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import java.io.Reader;
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import java.io.StringReader;
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import java.io.BufferedReader;
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import java.io.File;
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import java.io.FileInputStream;
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import java.util.Enumeration;
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import java.util.Hashtable;
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import java.util.ResourceBundle;
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import java.util.PropertyResourceBundle;
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import java.net.URL;
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import java.net.MalformedURLException;
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import java.sql.PreparedStatement;
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import java.sql.ResultSet;
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import java.sql.Connection;
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import java.sql.SQLException;
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import javax.servlet.ServletConfig;
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import javax.servlet.ServletContext;
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import javax.servlet.ServletException;
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import javax.servlet.ServletInputStream;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import javax.servlet.http.HttpSession;
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import javax.servlet.http.HttpUtils;
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import oracle.xml.parser.v2.XSLStylesheet;
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import oracle.xml.parser.v2.XSLException;
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import oracle.xml.parser.v2.XMLDocumentFragment;
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import oracle.xml.parser.v2.XSLProcessor;
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import org.xml.sax.SAXException;
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/**
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* A metadata catalog server implemented as a Java Servlet
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*
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* <p>Valid parameters are:<br>
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* action=query -- query the values of all elements and attributes
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* and return a result set of nodes<br>
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* action=squery -- structured query (see pathquery.dtd)<br>
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* action=insert -- insert an XML document into the database store<br>
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* action=update -- update an XML document that is in the database store<br>
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* action=delete -- delete an XML document from the database store<br>
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* action=validate -- vallidate the xml contained in valtext<br>
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* action=getdocument -- display an XML document in XML or HTML<br>
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* doctype -- document type list returned by the query (publicID)<br>
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* qformat=xml -- display resultset from query in XML<br>
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* qformat=html -- display resultset from query in HTML<br>
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* docid=34 -- display the document with the document ID number 34<br>
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* doctext -- XML text of the document to load into the database<br>
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* query -- actual query text (to go with 'action=query' or 'action=squery')<br>
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* valtext -- XML text to be validated<br>
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* action=getdatadoc -- retreive a stored datadocument<br>
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* action=getdoctypes -- retreive all doctypes (publicID)<br>
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* action=getdataguide -- retreive a Data Guide<br>
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* datadoc -- data document name (id)<br>
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* <p>
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* The particular combination of parameters that are valid for each
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* particular action value is quite specific. This documentation
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* will be reorganized to reflect this information.
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*/
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public class MetaCatServlet extends HttpServlet {
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private ServletConfig config = null;
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private ServletContext context = null;
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private Hashtable connectionPool = new Hashtable();
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private String resultStyleURL = null;
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private String xmlcatalogfile = null;
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private String saxparser = null;
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private String defaultdatapath = null;
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// path to directory where data files
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// that can be downloaded will be stored
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private String executescript = null;
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// script to get data file and put it
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// in defaultdocpath dir
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private PropertyResourceBundle options = null;
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private MetaCatUtil util = null;
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/**
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* Initialize the servlet by creating appropriate database connections
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*/
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public void init( ServletConfig config ) throws ServletException {
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try {
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super.init( config );
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this.config = config;
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this.context = config.getServletContext();
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System.out.println("MetaCatServlet Initialize");
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util = new MetaCatUtil();
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// Get the configuration file information
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resultStyleURL = util.getOption("resultStyleURL");
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xmlcatalogfile = util.getOption("xmlcatalogfile");
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saxparser = util.getOption("saxparser");
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defaultdatapath = util.getOption("defaultdatapath");
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executescript = util.getOption("executescript");
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try {
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// Open a pool of db connections
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connectionPool = util.getConnectionPool();
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} catch (Exception e) {
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System.err.println("Error creating pool of database connections");
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System.err.println(e.getMessage());
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}
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} catch ( ServletException ex ) {
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throw ex;
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}
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}
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/** Handle "GET" method requests from HTTP clients */
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public void doGet (HttpServletRequest request, HttpServletResponse response)
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throws ServletException, IOException {
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// Process the data and send back the response
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handleGetOrPost(request, response);
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}
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/** Handle "POST" method requests from HTTP clients */
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public void doPost( HttpServletRequest request, HttpServletResponse response)
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throws ServletException, IOException {
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// Process the data and send back the response
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handleGetOrPost(request, response);
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}
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/**
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* Control servlet response depending on the action parameter specified
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*/
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private void handleGetOrPost(HttpServletRequest request,
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HttpServletResponse response)
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throws ServletException, IOException {
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if ( util == null ) {
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util = new MetaCatUtil();
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}
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if ( connectionPool == null ) {
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try {
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// Open a pool of db connections
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connectionPool = util.getConnectionPool();
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} catch (Exception e) {
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System.err.println("Error creating pool of database connections");
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System.err.println(e.getMessage());
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}
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}
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// Get a handle to the output stream back to the client
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PrintWriter out = response.getWriter();
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//response.setContentType("text/html");
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String name = null;
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String[] value = null;
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String[] docid = new String[3];
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Hashtable params = new Hashtable();
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Enumeration paramlist = request.getParameterNames();
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while (paramlist.hasMoreElements()) {
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name = (String)paramlist.nextElement();
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value = request.getParameterValues(name);
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// Decode the docid and mouse click information
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if (name.endsWith(".y")) {
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docid[0] = name.substring(0,name.length()-2);
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//out.println("docid => " + docid[0]);
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params.put("docid", docid);
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name = "ypos";
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}
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if (name.endsWith(".x")) {
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name = "xpos";
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}
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//out.println(name + " => " + value[0]);
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params.put(name,value);
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}
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// Determine what type of request the user made
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// if the action parameter is set, use it as a default
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// but if the ypos param is set, calculate the action needed
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String action = ((String[])params.get("action"))[0];
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long ypos = 0;
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try {
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ypos = (new Long(((String[])params.get("ypos"))[0]).longValue());
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//out.println("<P>YPOS IS " + ypos);
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if (ypos <= 13) {
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action = "getdocument";
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} else if (ypos > 13 && ypos <= 27) {
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action = "validate";
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} else if (ypos > 27) {
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action = "transform";
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//} else {
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// action = "";
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}
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} catch (Exception npe) {
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//out.println("<P>Caught exception looking for Y value.");
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}
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// Jivka added
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String username = null;
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// handle login action
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if (action.equals("Login") || action.equals("Login Client")) {
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handleLoginAction(out, params, request, response);
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// handle logout action
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} else if (action.equals("Logout")) {
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HttpSession sess = request.getSession(false);
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if (sess != null) { sess.invalidate(); }
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response.sendRedirect("/xmltodb/lib/login.html");
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// aware of session expiration on every request
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} else {
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HttpSession sess = request.getSession(false);
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//HttpSession sess = request.getSession(true);
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225
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if (sess == null) {
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// session expired or has not been stored b/w user requests
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// redirect to session expiration message page
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228
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response.sendRedirect("/xmltodb/lib/sexpire.html");
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}
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230
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username = (String)sess.getValue("username");
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231
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}
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232
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// End of Jivka added
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233
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234
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if (action.equals("query") || action.equals("squery")) {
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235
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handleQueryAction(out, params, response);
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236
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} else if (action.equals("getdocument")) {
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237
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try {
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238
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handleGetDocumentAction(out, params, response);
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239
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} catch (ClassNotFoundException e) {
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240
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out.println(e.getMessage());
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241
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} catch (SQLException se) {
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242
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out.println(se.getMessage());
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243
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}
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244
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} else if (action.equals("insert") || action.equals("update")) {
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245
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if ( username == "anonymous" ) {
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246
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out.println("You are not authorized to use that option.");
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247
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} else {
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248
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handleInsertOrUpdateAction(out, params, response);
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249
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}
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250
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} else if (action.equals("delete")) {
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251
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if ( username == "anonymous" ) {
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252
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out.println("You are not authorized to use that option");
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253
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} else {
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254
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handleDeleteAction(out, params, response);
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255
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}
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256
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} else if (action.equals("validate")) {
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257
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if ( username == "anonymous" ) {
|
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258
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out.println("You are not authorized to use that option");
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259
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} else {
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260
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handleValidateAction(out, params, response);
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261
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}
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262
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} else if (action.equals("getdatadoc")) {
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263
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handleGetDataDocumentAction(out, params, response);
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264
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} else if (action.equals("getdoctypes")) {
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265
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handleGetDoctypesAction(out, params, response);
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266
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} else if (action.equals("getdataguide")) {
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267
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handleGetDataGuideAction(out, params, response);
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268
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} else if (action.equals("Login") || action.equals("Login Client")) {
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269
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} else {
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270
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out.println("Error: action not registered. Please report this error.");
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271
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}
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272
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273
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// Close the stream to the client
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274
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out.close();
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275
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}
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|
276
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|
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277
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// Jivka added
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278
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/**
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279
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* Handle the Login request. Create a new session object.
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280
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* Make a user authentication through SRB RMI Connection.
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281
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*/
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282
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283
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private void handleLoginAction(PrintWriter out, Hashtable params,
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284
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HttpServletRequest request, HttpServletResponse response) {
|
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285
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286
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MetaCatSession sess = null;
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287
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String un = ((String[])params.get("username"))[0];
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288
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String pw = ((String[])params.get("password"))[0];
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289
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String action = ((String[])params.get("action"))[0];
|
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290
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|
291
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try {
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292
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sess = new MetaCatSession(request, un, pw);
|
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293
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} catch (Exception e) {
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294
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out.println(e.getMessage());
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|
295
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}
|
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296
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|
|
297
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if ( un == "anonymous" ) {
|
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298
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try {
|
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299
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response.sendRedirect(
|
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300
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response.encodeRedirectUrl("/xmltodb/lib/query.html"));
|
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301
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} catch (java.io.IOException ioe) {
|
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302
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sess.disconnect();
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303
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out.println("<?xml version=\"1.0\"?>");
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304
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out.println("<error>");
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305
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out.println("MetaCatServlet.handleLoginAction() - " +
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|
306
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"Error on redirect of HttpServletResponse: " +
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307
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ioe.getMessage());
|
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308
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out.println("</error>");
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309
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}
|
|
310
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}
|
|
311
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|
|
312
|
try {
|
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313
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if (sess.userAuth(un, pw)) {
|
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314
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try {
|
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315
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if (action.equals("Login Client")) {
|
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316
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out.println("<?xml version=\"1.0\"?>");
|
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317
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out.println("<success>");
|
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318
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out.println("User Authentication successful.");
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319
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out.println("</success>");
|
|
320
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} else {
|
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321
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response.sendRedirect(
|
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322
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response.encodeRedirectUrl("/xmltodb/lib/index.html"));
|
|
323
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}
|
|
324
|
} catch ( java.io.IOException ioe) {
|
|
325
|
sess.disconnect();
|
|
326
|
out.println("<?xml version=\"1.0\"?>");
|
|
327
|
out.println("<error>");
|
|
328
|
out.println("MetaCatServlet.handleLoginAction() - " +
|
|
329
|
"Error on redirect of HttpServletResponse: " +
|
|
330
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ioe.getMessage());
|
|
331
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out.println("</error>");
|
|
332
|
}
|
|
333
|
|
|
334
|
} else {
|
|
335
|
sess.disconnect();
|
|
336
|
out.println("<?xml version=\"1.0\"?>");
|
|
337
|
out.println("<error>");
|
|
338
|
out.println("SRB Connection failed. " +
|
|
339
|
"SRB RMI Server is not running now or " +
|
|
340
|
"user " + un +
|
|
341
|
" has not been authenticated to use the system.");
|
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342
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out.println("</error>");
|
|
343
|
}
|
|
344
|
} catch ( java.rmi.RemoteException re) {
|
|
345
|
sess.disconnect();
|
|
346
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out.println("<?xml version=\"1.0\"?>");
|
|
347
|
out.println("<error>");
|
|
348
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out.println("SRB Connection failed. " + re.getMessage());
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|
349
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out.println("</error>");
|
|
350
|
}
|
|
351
|
}
|
|
352
|
|
|
353
|
/**
|
|
354
|
* Handle the database query request and return a result set, possibly
|
|
355
|
* transformed from XML into HTML
|
|
356
|
*/
|
|
357
|
private void handleQueryAction(PrintWriter out, Hashtable params,
|
|
358
|
HttpServletResponse response) {
|
|
359
|
String action = ((String[])params.get("action"))[0];
|
|
360
|
String query = ((String[])params.get("query"))[0];
|
|
361
|
Hashtable doclist = null;
|
|
362
|
String[] doctypeArr = null;
|
|
363
|
String doctype = null;
|
|
364
|
Reader xmlquery = null;
|
|
365
|
Connection conn = null;
|
|
366
|
|
|
367
|
// Run the query if it is a structured query
|
|
368
|
// or, if it is a free-text, simple query,
|
|
369
|
// format it first as a structured query and then run it
|
|
370
|
if (action.equals("query")) {
|
|
371
|
doctypeArr = (String[])params.get("doctype");
|
|
372
|
doctype = null;
|
|
373
|
if (doctypeArr != null) {
|
|
374
|
doctype = ((String[])params.get("doctype"))[0];
|
|
375
|
}
|
|
376
|
|
|
377
|
if (doctype != null) {
|
|
378
|
xmlquery = new StringReader(DBQuery.createQuery(query,doctype));
|
|
379
|
} else {
|
|
380
|
xmlquery = new StringReader(DBQuery.createQuery(query));
|
|
381
|
}
|
|
382
|
} else if (action.equals("squery")) {
|
|
383
|
xmlquery = new StringReader(query);
|
|
384
|
} else {
|
|
385
|
System.err.println("Error handling query -- illegal action value");
|
|
386
|
}
|
|
387
|
|
|
388
|
try {
|
|
389
|
conn = util.getConnection();
|
|
390
|
DBQuery queryobj = new DBQuery(conn, saxparser);
|
|
391
|
doclist = queryobj.findDocuments(xmlquery);
|
|
392
|
} catch (Exception e) {
|
|
393
|
response.setContentType("text/html");
|
|
394
|
out.println(e.getMessage());
|
|
395
|
return;
|
|
396
|
} finally {
|
|
397
|
if ( conn != null ) { util.returnConnection(conn); }
|
|
398
|
}
|
|
399
|
/*
|
|
400
|
if (queryobj != null) {
|
|
401
|
doclist = queryobj.findDocuments(xmlquery);
|
|
402
|
} else {
|
|
403
|
out.println("Query Object Init failed.");
|
|
404
|
return;
|
|
405
|
}
|
|
406
|
*/
|
|
407
|
// Create a buffer to hold the xml result
|
|
408
|
StringBuffer resultset = new StringBuffer();
|
|
409
|
|
|
410
|
// Print the resulting root nodes
|
|
411
|
String docid;
|
|
412
|
String document = null;
|
|
413
|
resultset.append("<?xml version=\"1.0\"?>\n");
|
|
414
|
//resultset.append("<!DOCTYPE resultset PUBLIC " +
|
|
415
|
// "\"-//NCEAS//resultset//EN\" \"resultset.dtd\">\n");
|
|
416
|
resultset.append("<resultset>\n");
|
|
417
|
// following line removed by Dan Higgins to avoid insertion of query XML inside returned XML doc
|
|
418
|
// resultset.append(" <query>" + query + "</query>");
|
|
419
|
Enumeration doclistkeys = doclist.keys();
|
|
420
|
while (doclistkeys.hasMoreElements()) {
|
|
421
|
docid = (String)doclistkeys.nextElement();
|
|
422
|
document = (String)doclist.get(docid);
|
|
423
|
resultset.append(" <document>" + document + "</document>");
|
|
424
|
}
|
|
425
|
resultset.append("</resultset>");
|
|
426
|
|
|
427
|
String qformat = ((String[])params.get("qformat"))[0];
|
|
428
|
if (qformat.equals("xml")) {
|
|
429
|
// set content type and other response header fields first
|
|
430
|
response.setContentType("text/xml");
|
|
431
|
out.println(resultset.toString());
|
|
432
|
} else if (qformat.equals("html")) {
|
|
433
|
// set content type and other response header fields first
|
|
434
|
response.setContentType("text/html");
|
|
435
|
//out.println("Converting to HTML...");
|
|
436
|
XMLDocumentFragment htmldoc = null;
|
|
437
|
try {
|
|
438
|
XSLStylesheet style = new XSLStylesheet(
|
|
439
|
new URL(resultStyleURL), null);
|
|
440
|
htmldoc = (new XSLProcessor()).processXSL(style,
|
|
441
|
(Reader)(new StringReader(resultset.toString())),null);
|
|
442
|
htmldoc.print(out);
|
|
443
|
} catch (Exception e) {
|
|
444
|
out.println("Error transforming document:\n" + e.getMessage());
|
|
445
|
}
|
|
446
|
}
|
|
447
|
}
|
|
448
|
|
|
449
|
/**
|
|
450
|
* Handle the database getdocument request and return a XML document,
|
|
451
|
* possibly transformed from XML into HTML
|
|
452
|
*/
|
|
453
|
private void handleGetDocumentAction(PrintWriter out, Hashtable params,
|
|
454
|
HttpServletResponse response)
|
|
455
|
throws ClassNotFoundException, IOException, SQLException {
|
|
456
|
String docidstr = null;
|
|
457
|
String docid = null;
|
|
458
|
String doc = null;
|
|
459
|
Connection conn = null;
|
|
460
|
|
|
461
|
try {
|
|
462
|
// Find the document id number
|
|
463
|
docidstr = ((String[])params.get("docid"))[0];
|
|
464
|
//docid = (new Long(docidstr)).longValue();
|
|
465
|
docid = docidstr;
|
|
466
|
|
|
467
|
conn = util.getConnection();
|
|
468
|
DBReader docreader = new DBReader(conn);
|
|
469
|
DBTransform dbt = new DBTransform(conn);
|
|
470
|
|
|
471
|
// Get the document indicated fromthe db
|
|
472
|
doc = docreader.readXMLDocument(docid);
|
|
473
|
|
|
474
|
// Return the document in XML or HTML format
|
|
475
|
String qformat = ((String[])params.get("qformat"))[0];
|
|
476
|
if (qformat.equals("xml")) {
|
|
477
|
// set content type and other response header fields first
|
|
478
|
response.setContentType("text/xml");
|
|
479
|
out.println(doc);
|
|
480
|
} else if (qformat.equals("html")) {
|
|
481
|
// set content type and other response header fields first
|
|
482
|
response.setContentType("text/html");
|
|
483
|
|
|
484
|
// Look up the document type
|
|
485
|
String sourcetype = docreader.getDoctypeInfo(docid).getDoctype();
|
|
486
|
|
|
487
|
// Transform the document to the new doctype
|
|
488
|
dbt.transformXMLDocument(doc, sourcetype, "-//W3C//HTML//EN", out);
|
|
489
|
}
|
|
490
|
} catch (NullPointerException npe) {
|
|
491
|
response.setContentType("text/html");
|
|
492
|
out.println("Error getting document ID: " + docidstr +" (" + docid + ")");
|
|
493
|
} catch (Exception e) {
|
|
494
|
response.setContentType("text/html");
|
|
495
|
out.println(e.getMessage());
|
|
496
|
} finally {
|
|
497
|
if ( conn != null ) { util.returnConnection(conn); }
|
|
498
|
}
|
|
499
|
|
|
500
|
}
|
|
501
|
|
|
502
|
/**
|
|
503
|
* Handle the database putdocument request and write an XML document
|
|
504
|
* to the database connection
|
|
505
|
*/
|
|
506
|
private void handleInsertOrUpdateAction(PrintWriter out, Hashtable params,
|
|
507
|
HttpServletResponse response) {
|
|
508
|
|
|
509
|
Connection conn = null;
|
|
510
|
|
|
511
|
try {
|
|
512
|
// Get the document indicated
|
|
513
|
String[] doctext = (String[])params.get("doctext");
|
|
514
|
StringReader xml = null;
|
|
515
|
try {
|
|
516
|
xml = new StringReader(doctext[0]);
|
|
517
|
|
|
518
|
String[] action = (String[])params.get("action");
|
|
519
|
String[] docid = (String[])params.get("docid");
|
|
520
|
String newdocid = null;
|
|
521
|
|
|
522
|
String doAction = null;
|
|
523
|
if (action[0].equals("insert")) {
|
|
524
|
doAction = "INSERT";
|
|
525
|
} else if (action[0].equals("update")) {
|
|
526
|
doAction = "UPDATE";
|
|
527
|
}
|
|
528
|
|
|
529
|
try {
|
|
530
|
// get a connection from the pool
|
|
531
|
conn = util.getConnection();
|
|
532
|
// write the document to the database
|
|
533
|
DBWriter dbw = new DBWriter(conn, saxparser);
|
|
534
|
|
|
535
|
try {
|
|
536
|
String accNumber = docid[0];
|
|
537
|
if (accNumber.equals("")) {
|
|
538
|
accNumber = null;
|
|
539
|
}
|
|
540
|
newdocid = dbw.write(xml, doAction, accNumber);
|
|
541
|
} catch (NullPointerException npe) {
|
|
542
|
newdocid = dbw.write(xml, doAction, null);
|
|
543
|
}
|
|
544
|
} catch (Exception e) {
|
|
545
|
response.setContentType("text/html");
|
|
546
|
out.println(e.getMessage());
|
|
547
|
} finally {
|
|
548
|
if ( conn != null ) { util.returnConnection(conn); }
|
|
549
|
}
|
|
550
|
|
|
551
|
// set content type and other response header fields first
|
|
552
|
response.setContentType("text/xml");
|
|
553
|
out.println("<?xml version=\"1.0\"?>");
|
|
554
|
out.println("<success>");
|
|
555
|
out.println("<docid>" + newdocid + "</docid>");
|
|
556
|
out.println("</success>");
|
|
557
|
|
|
558
|
} catch (NullPointerException npe) {
|
|
559
|
response.setContentType("text/xml");
|
|
560
|
out.println("<?xml version=\"1.0\"?>");
|
|
561
|
out.println("<error>");
|
|
562
|
out.println(npe.getMessage());
|
|
563
|
out.println("</error>");
|
|
564
|
}
|
|
565
|
} catch (Exception e) {
|
|
566
|
response.setContentType("text/xml");
|
|
567
|
out.println("<?xml version=\"1.0\"?>");
|
|
568
|
out.println("<error>");
|
|
569
|
out.println(e.getMessage());
|
|
570
|
if (e instanceof SAXException) {
|
|
571
|
Exception e2 = ((SAXException)e).getException();
|
|
572
|
out.println("<error>");
|
|
573
|
out.println(e2.getMessage());
|
|
574
|
out.println("</error>");
|
|
575
|
}
|
|
576
|
//e.printStackTrace(out);
|
|
577
|
out.println("</error>");
|
|
578
|
}
|
|
579
|
}
|
|
580
|
|
|
581
|
/**
|
|
582
|
* Handle the database delete request and delete an XML document
|
|
583
|
* from the database connection
|
|
584
|
*/
|
|
585
|
private void handleDeleteAction(PrintWriter out, Hashtable params,
|
|
586
|
HttpServletResponse response) {
|
|
587
|
|
|
588
|
String[] docid = (String[])params.get("docid");
|
|
589
|
Connection conn = null;
|
|
590
|
|
|
591
|
// delete the document from the database
|
|
592
|
try {
|
|
593
|
// get a connection from the pool
|
|
594
|
conn = util.getConnection();
|
|
595
|
DBWriter dbw = new DBWriter(conn, saxparser);
|
|
596
|
// NOTE -- NEED TO TEST HERE
|
|
597
|
// FOR EXISTENCE OF PARAM
|
|
598
|
// BEFORE ACCESSING ARRAY
|
|
599
|
try {
|
|
600
|
dbw.delete(docid[0]);
|
|
601
|
response.setContentType("text/xml");
|
|
602
|
out.println("<?xml version=\"1.0\"?>");
|
|
603
|
out.println("<success>");
|
|
604
|
out.println("Document deleted.");
|
|
605
|
out.println("</success>");
|
|
606
|
} catch (AccessionNumberException ane) {
|
|
607
|
response.setContentType("text/xml");
|
|
608
|
out.println("<?xml version=\"1.0\"?>");
|
|
609
|
out.println("<error>");
|
|
610
|
out.println("Error deleting document!!!");
|
|
611
|
out.println(ane.getMessage());
|
|
612
|
out.println("</error>");
|
|
613
|
}
|
|
614
|
} catch (Exception e) {
|
|
615
|
response.setContentType("text/xml");
|
|
616
|
out.println("<?xml version=\"1.0\"?>");
|
|
617
|
out.println("<error>");
|
|
618
|
out.println(e.getMessage());
|
|
619
|
out.println("</error>");
|
|
620
|
} finally {
|
|
621
|
if ( conn != null ) { util.returnConnection(conn); }
|
|
622
|
}
|
|
623
|
}
|
|
624
|
|
|
625
|
/**
|
|
626
|
* Handle the validtion request and return the results to the requestor
|
|
627
|
*/
|
|
628
|
private void handleValidateAction(PrintWriter out, Hashtable params,
|
|
629
|
HttpServletResponse response) {
|
|
630
|
|
|
631
|
// Get the document indicated
|
|
632
|
String valtext = null;
|
|
633
|
|
|
634
|
try {
|
|
635
|
valtext = ((String[])params.get("valtext"))[0];
|
|
636
|
} catch (Exception nullpe) {
|
|
637
|
|
|
638
|
Connection conn = null;
|
|
639
|
String docid = null;
|
|
640
|
try {
|
|
641
|
// Find the document id number
|
|
642
|
docid = ((String[])params.get("docid"))[0];
|
|
643
|
|
|
644
|
// get a connection from the pool
|
|
645
|
conn = util.getConnection();
|
|
646
|
DBReader docreader = new DBReader(conn);
|
|
647
|
// Get the document indicated from the db
|
|
648
|
valtext = docreader.readXMLDocument(docid);
|
|
649
|
|
|
650
|
} catch (NullPointerException npe) {
|
|
651
|
response.setContentType("text/xml");
|
|
652
|
out.println("<error>Error getting document ID: " + docid + "</error>");
|
|
653
|
return; // Jivka added
|
|
654
|
} catch (Exception e) {
|
|
655
|
response.setContentType("text/html");
|
|
656
|
out.println(e.getMessage());
|
|
657
|
} finally {
|
|
658
|
if ( conn != null ) { util.returnConnection(conn); }
|
|
659
|
}
|
|
660
|
}
|
|
661
|
|
|
662
|
Connection conn = null;
|
|
663
|
try {
|
|
664
|
// get a connection from the pool
|
|
665
|
conn = util.getConnection();
|
|
666
|
DBValidate valobj = new DBValidate(saxparser,conn);
|
|
667
|
boolean valid = valobj.validateString(valtext);
|
|
668
|
|
|
669
|
// set content type and other response header fields first
|
|
670
|
response.setContentType("text/xml");
|
|
671
|
out.println(valobj.returnErrors());
|
|
672
|
|
|
673
|
} catch (NullPointerException npe2) {
|
|
674
|
// set content type and other response header fields first
|
|
675
|
response.setContentType("text/xml");
|
|
676
|
out.println("<error>Error validating document.</error>");
|
|
677
|
} catch (Exception e) {
|
|
678
|
response.setContentType("text/html");
|
|
679
|
out.println(e.getMessage());
|
|
680
|
} finally {
|
|
681
|
if ( conn != null ) { util.returnConnection(conn); }
|
|
682
|
}
|
|
683
|
}
|
|
684
|
|
|
685
|
/**
|
|
686
|
* Handle the document request and return the results
|
|
687
|
* to the requestor
|
|
688
|
*/
|
|
689
|
private void handleGetDataDocumentAction(PrintWriter out, Hashtable params,
|
|
690
|
HttpServletResponse response) {
|
|
691
|
boolean error_flag = false;
|
|
692
|
String error_message = "";
|
|
693
|
// Get the document indicated
|
|
694
|
String[] datadoc = (String[])params.get("datadoc");
|
|
695
|
// defaultdatapath = "C:\\Temp\\"; // for testing only!!!
|
|
696
|
// executescript = "test.bat"; // for testing only!!!
|
|
697
|
|
|
698
|
// set content type and other response header fields first
|
|
699
|
response.setContentType("application/octet-stream");
|
|
700
|
if (defaultdatapath!=null) {
|
|
701
|
if(!defaultdatapath.endsWith(System.getProperty("file.separator"))) {
|
|
702
|
defaultdatapath=defaultdatapath+System.getProperty("file.separator");
|
|
703
|
}
|
|
704
|
System.out.println("Path= "+defaultdatapath+datadoc[0]);
|
|
705
|
if (executescript!=null) {
|
|
706
|
String command = null;
|
|
707
|
File scriptfile = new File(executescript);
|
|
708
|
if (scriptfile.exists()) {
|
|
709
|
command=executescript+" "+datadoc[0]; // script includes path
|
|
710
|
} else { // look in defaultdatapath
|
|
711
|
// on Win98 one MUST include the .bat extender
|
|
712
|
command = defaultdatapath+executescript+" "+datadoc[0];
|
|
713
|
}
|
|
714
|
System.out.println(command);
|
|
715
|
try {
|
|
716
|
Process proc = Runtime.getRuntime().exec(command);
|
|
717
|
proc.waitFor();
|
|
718
|
}
|
|
719
|
catch (Exception eee) {
|
|
720
|
System.out.println("Error running process!");
|
|
721
|
error_flag = true;
|
|
722
|
error_message = "Error running process!";}
|
|
723
|
} // end executescript not null if
|
|
724
|
File datafile = new File(defaultdatapath+datadoc[0]);
|
|
725
|
try {
|
|
726
|
FileInputStream fw = new FileInputStream(datafile);
|
|
727
|
int x;
|
|
728
|
while ((x = fw.read())!=-1) {
|
|
729
|
out.write(x); }
|
|
730
|
fw.close();
|
|
731
|
} catch (Exception e) {
|
|
732
|
System.out.println("Error in returning file\n"+e.getMessage());
|
|
733
|
error_flag=true;
|
|
734
|
error_message = error_message+"\nError in returning file\n"+
|
|
735
|
e.getMessage();
|
|
736
|
}
|
|
737
|
} // end defaultdatapath not null if
|
|
738
|
}
|
|
739
|
|
|
740
|
/**
|
|
741
|
* Handle the getdoctypes Action.
|
|
742
|
* Read all doctypes from db connection in XML format
|
|
743
|
*/
|
|
744
|
|
|
745
|
private void handleGetDoctypesAction(PrintWriter out, Hashtable params,
|
|
746
|
HttpServletResponse response) {
|
|
747
|
|
|
748
|
Connection conn = null;
|
|
749
|
|
|
750
|
try {
|
|
751
|
|
|
752
|
// get connection from the pool
|
|
753
|
conn = util.getConnection();
|
|
754
|
DBUtil dbutil = new DBUtil(conn);
|
|
755
|
String doctypes = dbutil.readDoctypes();
|
|
756
|
out.println(doctypes);
|
|
757
|
|
|
758
|
} catch (Exception e) {
|
|
759
|
out.println("<?xml version=\"1.0\"?>");
|
|
760
|
out.println("<error>");
|
|
761
|
out.println(e.getMessage());
|
|
762
|
out.println("</error>");
|
|
763
|
} finally {
|
|
764
|
if ( conn != null ) { util.returnConnection(conn); }
|
|
765
|
}
|
|
766
|
|
|
767
|
}
|
|
768
|
|
|
769
|
/**
|
|
770
|
* Handle the getdataguide Action.
|
|
771
|
* Read Data Guide for a given doctype from db connection in XML format
|
|
772
|
*/
|
|
773
|
|
|
774
|
private void handleGetDataGuideAction(PrintWriter out, Hashtable params,
|
|
775
|
HttpServletResponse response) {
|
|
776
|
|
|
777
|
Connection conn = null;
|
|
778
|
|
|
779
|
try {
|
|
780
|
|
|
781
|
// get connection from the pool
|
|
782
|
conn = util.getConnection();
|
|
783
|
DBUtil dbutil = new DBUtil(conn);
|
|
784
|
String dataguide = dbutil.readDataGuide("");
|
|
785
|
out.println(dataguide);
|
|
786
|
|
|
787
|
} catch (Exception e) {
|
|
788
|
out.println("<?xml version=\"1.0\"?>");
|
|
789
|
out.println("<error>");
|
|
790
|
out.println(e.getMessage());
|
|
791
|
out.println("</error>");
|
|
792
|
} finally {
|
|
793
|
if ( conn != null ) { util.returnConnection(conn); }
|
|
794
|
}
|
|
795
|
|
|
796
|
}
|
|
797
|
|
|
798
|
}
|
|
799
|
|
|
800
|
/**
|
|
801
|
* '$Log$
|
|
802
|
* 'Revision 1.55 2000/08/01 18:26:50 bojilova
|
|
803
|
* 'added Pool of Connections
|
|
804
|
* 'DBQuery, DBReader, DBTransform, DBUtil are created on every request and use the connections from the Pool
|
|
805
|
* 'same with DBWriter and DBValidate
|
|
806
|
* '
|
|
807
|
* 'Revision 1.54 2000/07/27 23:12:21 bojilova
|
|
808
|
* 'Added "getdoctypes" and "getdataguide" action handlers
|
|
809
|
* '
|
|
810
|
* 'Revision 1.53 2000/07/26 20:48:29 bojilova
|
|
811
|
* 'Added "Login Client" action for login from the Desktop Client
|
|
812
|
* '
|
|
813
|
* 'Revision 1.52 2000/07/26 20:38:40 higgins
|
|
814
|
* 'no message
|
|
815
|
* '
|
|
816
|
* 'Revision 1.51 2000/07/01 01:09:44 jones
|
|
817
|
* 'MetaCatServlet.java
|
|
818
|
* '
|
|
819
|
* 'Revision 1.50 2000/06/30 23:42:33 bojilova
|
|
820
|
* 'finished user auth & session tracking
|
|
821
|
* '
|
|
822
|
* 'Revision 1.49 2000/06/29 23:27:08 jones
|
|
823
|
* 'Fixed bug in DBEntityResolver so that it now properly delegates to
|
|
824
|
* 'the system id found inthe database.
|
|
825
|
* 'Changed DBValidate to use DBEntityResolver, rather than the OASIS
|
|
826
|
* 'catalog, and to return validation results in XML format.
|
|
827
|
* '
|
|
828
|
* 'Revision 1.48 2000/06/29 20:04:51 bojilova
|
|
829
|
* 'testing login
|
|
830
|
* '
|
|
831
|
* 'Revision 1.36 2000/06/28 02:36:26 jones
|
|
832
|
* 'Added feature to now ouput COMMENTs and PIs when the document is
|
|
833
|
* 'read from the database with DBReader.
|
|
834
|
* '
|
|
835
|
* 'Revision 1.35 2000/06/28 00:00:47 bojilova
|
|
836
|
* 'changed to
|
|
837
|
* 'response.sendRedirect(response.encodeRedirectUrl("/xmltodb/lib/index.html"));
|
|
838
|
* '
|
|
839
|
* 'Revision 1.33 2000/06/27 04:50:33 jones
|
|
840
|
* 'Updated javadoc documentation.
|
|
841
|
* '
|
|
842
|
* 'Revision 1.32 2000/06/27 04:31:07 jones
|
|
843
|
* 'Fixed bugs associated with the new UPDATE and DELETE functions of
|
|
844
|
* 'DBWriter. There were problematic interactions between some static
|
|
845
|
* 'variables used in DBEntityResolver and the way in which the
|
|
846
|
* 'Servlet objects are re-used across multiple client invocations.
|
|
847
|
* '
|
|
848
|
* 'Generally cleaned up error reporting. Now all errors and success
|
|
849
|
* 'results are reported as XML documents from MetaCatServlet. Need
|
|
850
|
* 'to make the command line tools do the same.
|
|
851
|
* '
|
|
852
|
* 'Revision 1.31 2000/06/26 10:35:05 jones
|
|
853
|
* 'Merged in substantial changes to DBWriter and associated classes and to
|
|
854
|
* 'the MetaCatServlet in order to accomodate the new UPDATE and DELETE
|
|
855
|
* 'functions. The command line tools and the parameters for the
|
|
856
|
* 'servlet have changed substantially.
|
|
857
|
* '
|
|
858
|
* 'Revision 1.30.2.6 2000/06/26 10:18:06 jones
|
|
859
|
* 'Partial fix for MetaCatServlet INSERT?UPDATE bug. Only will work on
|
|
860
|
* 'the first call to the servlet. Subsequent calls fail. Seems to be
|
|
861
|
* 'related to exception handling. Multiple successive DELETE actions
|
|
862
|
* 'work fine.
|
|
863
|
* '
|
|
864
|
* 'Revision 1.30.2.5 2000/06/26 09:09:53 jones
|
|
865
|
* 'Modified MetaCatServlet and associated files to handle the UPDATE
|
|
866
|
* 'and DELETE actions for DBWriter.
|
|
867
|
* '
|
|
868
|
* 'Revision 1.30.2.4 2000/06/26 00:51:06 jones
|
|
869
|
* 'If docid passed to DBWriter.write() is not unique, classes now generate
|
|
870
|
* 'an AccessionNumberException containing the new docid generated as a
|
|
871
|
* 'replacement. The docid is then extracted from the exception and
|
|
872
|
* 'returned to the calling application for user feedback or client processing.
|
|
873
|
* '
|
|
874
|
* 'Revision 1.30.2.3 2000/06/25 23:38:17 jones
|
|
875
|
* 'Added RCSfile keyword
|
|
876
|
* '
|
|
877
|
* 'Revision 1.30.2.2 2000/06/25 23:34:18 jones
|
|
878
|
* 'Changed documentation formatting, added log entries at bottom of source files
|
|
879
|
* ''
|
|
880
|
*/
|