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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, Chad Berkley
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* Release: @release@
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*
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* '$Author: berkley $'
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* '$Date: 2000-09-12 12:28:45 -0700 (Tue, 12 Sep 2000) $'
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* '$Revision: 443 $'
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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 java.lang.reflect.*;
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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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private String servletpath = null;
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private PropertyResourceBundle options = null;
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private MetaCatUtil util = 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 htmlpath = 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 String executescript = 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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servletpath = util.getOption("servletpath");
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htmlpath = util.getOption("htmlpath");
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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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/**
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* Close all db connections from the pool
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*/
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public void destroy() {
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if (util != null) {
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util.closeConnections();
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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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{
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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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//if the user clicked on the input images, decode which image
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//was clicked then set the action.
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String action = decodeMouseAction(params);
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if(action.equals("error"))
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{
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action = ((String[])params.get("action"))[0];
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}
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// This block handles session management for the servlet
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// by looking up the current session information for all actions
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// other than "Login" and "Logout"
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// handle login action
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String username = null;
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String groupname = null;
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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") || action.equals("Logout Client")) {
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HttpSession sess = request.getSession(false);
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if (sess != null) { sess.invalidate(); }
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if (action.equals("Logout Client")) {
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out.println("<?xml version=\"1.0\"?>");
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out.println("<success>");
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out.println("User logout.");
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out.println("</success>");
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return;
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234
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}
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235
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236
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response.sendRedirect(htmlpath + "/index.html");
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// aware of session expiration on every request
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} else {
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240
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HttpSession sess = request.getSession(true);
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241
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if (sess.isNew()) {
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// session expired or has not been stored b/w user requests
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// redirect to default page for query only access
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244
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// response.sendRedirect(htmlpath + "/sexpire.html");
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245
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username = "public";
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246
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} else {
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247
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username = (String)sess.getAttribute("username");
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248
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groupname = (String)sess.getAttribute("groupname");
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249
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}
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250
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}
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251
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252
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// Now that we know the session is valid, we can delegate the request
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253
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// to a particular action handler
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254
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if(action.equals("query"))
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255
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{
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256
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handleQuery(out, params, response, username, groupname);
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257
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}
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258
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else if(action.equals("squery"))
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259
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{
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260
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if(params.containsKey("query"))
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261
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{
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262
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handleSQuery(out, params, response, username, groupname);
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263
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}
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264
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else
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265
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{
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266
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out.println("Illegal action squery without \"query\" parameter");
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267
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}
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268
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}
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269
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else if (action.equals("getdocument")) {
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270
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try {
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271
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handleGetDocumentAction(out, params, response);
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272
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} catch (ClassNotFoundException e) {
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273
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out.println(e.getMessage());
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274
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} catch (SQLException se) {
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275
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out.println(se.getMessage());
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276
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}
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277
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} else if (action.equals("insert") || action.equals("update")) {
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278
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if ( !username.equals("public") && (username != null) ) {
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279
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handleInsertOrUpdateAction(out, params, response, username, groupname);
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280
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} else {
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281
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out.println("Permission denied for " + action);
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282
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}
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283
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} else if (action.equals("delete")) {
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284
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if ( !username.equals("public") && (username != null) ) {
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285
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handleDeleteAction(out, params, response, username, groupname);
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286
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} else {
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287
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out.println("Permission denied for " + action);
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288
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}
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289
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} else if (action.equals("validate")) {
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290
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handleValidateAction(out, params, response);
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291
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} else if (action.equals("getabstract")) {
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292
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try{
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293
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handleViewAbstractAction(out, params, response);
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294
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}
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295
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catch(Exception e)
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296
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{
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297
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out.println("error viewing abstract: " + e.getMessage());
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298
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}
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299
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} else if (action.equals("getdatadoc")) {
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300
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handleGetDataDocumentAction(out, params, response);
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301
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} else if (action.equals("getdoctypes")) {
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302
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handleGetDoctypesAction(out, params, response);
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303
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} else if (action.equals("getdataguide")) {
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304
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handleGetDataGuideAction(out, params, response);
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305
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} else if (action.equals("Login") || action.equals("Login Client")) {
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306
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} else {
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307
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out.println("Error: action not registered. Please report this error.");
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308
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}
|
|
309
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|
|
310
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// Close the stream to the client
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311
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out.close();
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312
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}
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|
313
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|
|
314
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/**
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|
315
|
* decodes the mouse click information coming from the client.
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316
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* This function may be overwritten to provide specific functionality
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|
317
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* for different applications.
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|
318
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* @param params the parameters from the CGI
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|
319
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* @return action the action to be performed or "error" if an error was
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|
320
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* generated
|
|
321
|
*/
|
|
322
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protected String decodeMouseAction(Hashtable params)
|
|
323
|
{
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|
324
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// Determine what type of request the user made
|
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325
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// if the action parameter is set, use it as a default
|
|
326
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// but if the ypos param is set, calculate the action needed
|
|
327
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String action=null;
|
|
328
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long ypos = 0;
|
|
329
|
try {
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330
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ypos = (new Long(((String[])params.get("ypos"))[0]).longValue());
|
|
331
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//out.println("<P>YPOS IS " + ypos);
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|
332
|
if (ypos <= 13) {
|
|
333
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action = "getdocument";
|
|
334
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} else if (ypos > 13 && ypos <= 27) {
|
|
335
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action = "validate";
|
|
336
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} else if (ypos > 27) {
|
|
337
|
action = "transform";
|
|
338
|
}
|
|
339
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return action;
|
|
340
|
} catch (Exception npe) {
|
|
341
|
//
|
|
342
|
// MBJ -- NOTE that this should be handled more gracefully with
|
|
343
|
// the new exception infrastructure -- this "error" return
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|
344
|
// value is inappropriate
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345
|
//out.println("<P>Caught exception looking for Y value.");
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346
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return "error";
|
|
347
|
}
|
|
348
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}
|
|
349
|
|
|
350
|
/**
|
|
351
|
* Handle the Login request. Create a new session object.
|
|
352
|
* Make a user authentication through SRB RMI Connection.
|
|
353
|
*/
|
|
354
|
private void handleLoginAction(PrintWriter out, Hashtable params,
|
|
355
|
HttpServletRequest request, HttpServletResponse response) {
|
|
356
|
|
|
357
|
MetaCatSession sess = null;
|
|
358
|
String un = ((String[])params.get("username"))[0];
|
|
359
|
String pw = ((String[])params.get("password"))[0];
|
|
360
|
String action = ((String[])params.get("action"))[0];
|
|
361
|
|
|
362
|
try {
|
|
363
|
sess = new MetaCatSession(request, un, pw);
|
|
364
|
} catch (Exception e) {
|
|
365
|
out.println(e.getMessage());
|
|
366
|
}
|
|
367
|
|
|
368
|
String output = null;
|
|
369
|
output = sess.userLogin(response, un, pw, action, htmlpath);
|
|
370
|
out.println(output);
|
|
371
|
|
|
372
|
}
|
|
373
|
|
|
374
|
/**
|
|
375
|
* Retreive the squery xml, execute it and display it
|
|
376
|
*
|
|
377
|
* @param out the output stream to the client
|
|
378
|
* @param params the Hashtable of parameters that should be included
|
|
379
|
* in the squery.
|
|
380
|
* @param response the response object linked to the client
|
|
381
|
* @param conn the database connection
|
|
382
|
*/
|
|
383
|
protected void handleSQuery(PrintWriter out, Hashtable params,
|
|
384
|
HttpServletResponse response, String user, String group)
|
|
385
|
{
|
|
386
|
String xmlquery = ((String[])params.get("query"))[0];
|
|
387
|
String qformat = ((String[])params.get("qformat"))[0];
|
|
388
|
Hashtable doclist = runQuery(xmlquery, user, group);
|
|
389
|
String resultdoc = createResultDocument(doclist, transformQuery(xmlquery));
|
|
390
|
|
|
391
|
System.out.println("transformed query");
|
|
392
|
System.out.println(transformQuery(xmlquery));
|
|
393
|
//format and transform the results
|
|
394
|
if(qformat.equals("html")) {
|
|
395
|
transformResultset(resultdoc, response, out);
|
|
396
|
} else if(qformat.equals("xml")) {
|
|
397
|
response.setContentType("text/xml");
|
|
398
|
out.println(resultdoc);
|
|
399
|
} else {
|
|
400
|
out.println("invalid qformat: " + qformat);
|
|
401
|
}
|
|
402
|
}
|
|
403
|
|
|
404
|
/**
|
|
405
|
* Create the xml query, execute it and display the results.
|
|
406
|
*
|
|
407
|
* @param out the output stream to the client
|
|
408
|
* @param params the Hashtable of parameters that should be included
|
|
409
|
* in the squery.
|
|
410
|
* @param response the response object linked to the client
|
|
411
|
*/
|
|
412
|
protected void handleQuery(PrintWriter out, Hashtable params,
|
|
413
|
HttpServletResponse response, String user, String group)
|
|
414
|
{
|
|
415
|
//create the query and run it
|
|
416
|
String xmlquery = DBQuery.createSQuery(params);
|
|
417
|
Hashtable doclist = runQuery(xmlquery, user, group);
|
|
418
|
String qformat = ((String[])params.get("qformat"))[0];
|
|
419
|
String resultdoc = createResultDocument(doclist, transformQuery(params));
|
|
420
|
System.out.println(transformQuery(params));
|
|
421
|
|
|
422
|
//format and transform the results
|
|
423
|
if(qformat.equals("html")) {
|
|
424
|
transformResultset(resultdoc, response, out);
|
|
425
|
} else if(qformat.equals("xml")) {
|
|
426
|
response.setContentType("text/xml");
|
|
427
|
out.println(resultdoc);
|
|
428
|
} else {
|
|
429
|
out.println("invalid qformat: " + qformat);
|
|
430
|
}
|
|
431
|
}
|
|
432
|
|
|
433
|
/**
|
|
434
|
* Removes the <?xml version="x"?> tag from the beginning of xmlquery
|
|
435
|
* so it can properly be placed in the <query> tag of the resultset.
|
|
436
|
* This method is overwritable so that other applications can customize
|
|
437
|
* the structure of what is in the <query> tag.
|
|
438
|
*
|
|
439
|
* @param xmlquery is the query to remove the <?xml version="x"?> tag from.
|
|
440
|
*/
|
|
441
|
protected String transformQuery(Hashtable params)
|
|
442
|
{
|
|
443
|
//DBQuery.createSQuery is a re-calling of a previously called
|
|
444
|
//function but it is necessary
|
|
445
|
//so that overriding methods have access to the params hashtable
|
|
446
|
String xmlquery = DBQuery.createSQuery(params);
|
|
447
|
//the <?xml version="1.0"?> tag is the first 22 characters of the
|
|
448
|
xmlquery = xmlquery.trim();
|
|
449
|
int index = xmlquery.indexOf("?>");
|
|
450
|
return xmlquery.substring(index + 2, xmlquery.length());
|
|
451
|
}
|
|
452
|
|
|
453
|
/**
|
|
454
|
* removes the <?xml version="1.0"?> tag from the beginning. This takes a
|
|
455
|
* string as a param instead of a hashtable.
|
|
456
|
*
|
|
457
|
* @param xmlquery a string representing a query.
|
|
458
|
*/
|
|
459
|
protected String transformQuery(String xmlquery)
|
|
460
|
{
|
|
461
|
xmlquery = xmlquery.trim();
|
|
462
|
int index = xmlquery.indexOf("?>");
|
|
463
|
return xmlquery.substring(index + 2, xmlquery.length());
|
|
464
|
}
|
|
465
|
|
|
466
|
/**
|
|
467
|
* Run the query and return a hashtable of results.
|
|
468
|
*
|
|
469
|
* @param xmlquery the query to run
|
|
470
|
*/
|
|
471
|
private Hashtable runQuery(String xmlquery, String user, String group)
|
|
472
|
{
|
|
473
|
Hashtable doclist=null;
|
|
474
|
Connection conn = null;
|
|
475
|
try
|
|
476
|
{
|
|
477
|
conn = util.getConnection();
|
|
478
|
DBQuery queryobj = new DBQuery(conn, saxparser);
|
|
479
|
doclist = queryobj.findDocuments(new StringReader(xmlquery),user,group);
|
|
480
|
util.returnConnection(conn);
|
|
481
|
return doclist;
|
|
482
|
}
|
|
483
|
catch (Exception e)
|
|
484
|
{
|
|
485
|
util.returnConnection(conn);
|
|
486
|
util.debugMessage("Error in runQuery: " + e.getMessage());
|
|
487
|
doclist = null;
|
|
488
|
return doclist;
|
|
489
|
}
|
|
490
|
}
|
|
491
|
|
|
492
|
/**
|
|
493
|
* Transorms an xml resultset document to html and sends it to the browser
|
|
494
|
*
|
|
495
|
* @param resultdoc the string representation of the document that needs
|
|
496
|
* to be transformed.
|
|
497
|
* @param response the HttpServletResponse object bound to the client.
|
|
498
|
* @param out the output stream to the client
|
|
499
|
*/
|
|
500
|
protected void transformResultset(String resultdoc,
|
|
501
|
HttpServletResponse response,
|
|
502
|
PrintWriter out)
|
|
503
|
{
|
|
504
|
Connection conn = null;
|
|
505
|
try {
|
|
506
|
conn = util.getConnection();
|
|
507
|
DBTransform trans = new DBTransform(conn);
|
|
508
|
response.setContentType("text/html");
|
|
509
|
trans.transformXMLDocument(resultdoc, "-//NCEAS//resultset//EN",
|
|
510
|
"-//W3C//HTML//EN", out);
|
|
511
|
util.returnConnection(conn);
|
|
512
|
}
|
|
513
|
catch(Exception e)
|
|
514
|
{
|
|
515
|
util.returnConnection(conn);
|
|
516
|
}
|
|
517
|
}
|
|
518
|
|
|
519
|
/**
|
|
520
|
* Transforms a hashtable of documents to an xml or html result.
|
|
521
|
*
|
|
522
|
* @param doclist- the hashtable to transform
|
|
523
|
* @param xmlquery- the query that returned the dolist result
|
|
524
|
*/
|
|
525
|
protected String createResultDocument(Hashtable doclist, String xmlquery)
|
|
526
|
{
|
|
527
|
// Create a buffer to hold the xml result
|
|
528
|
StringBuffer resultset = new StringBuffer();
|
|
529
|
|
|
530
|
// Print the resulting root nodes
|
|
531
|
String docid = null;
|
|
532
|
String document = null;
|
|
533
|
resultset.append("<?xml version=\"1.0\"?>\n");
|
|
534
|
resultset.append("<resultset>\n");
|
|
535
|
|
|
536
|
//the following should work but it doesn't because the parser doesn't
|
|
537
|
//like the <?xml?> tag inside the <query> tag. This is supposed to be
|
|
538
|
//the way that the query itself is sent back to the client.
|
|
539
|
|
|
540
|
resultset.append(" <query>" + xmlquery + "</query>");
|
|
541
|
|
|
542
|
Enumeration doclistkeys = doclist.keys();
|
|
543
|
while (doclistkeys.hasMoreElements())
|
|
544
|
{
|
|
545
|
docid = (String)doclistkeys.nextElement();
|
|
546
|
document = (String)doclist.get(docid);
|
|
547
|
resultset.append(" <document>" + document + "</document>");
|
|
548
|
}
|
|
549
|
resultset.append("</resultset>");
|
|
550
|
return resultset.toString();
|
|
551
|
}
|
|
552
|
|
|
553
|
/**
|
|
554
|
* Handle the request to view the abstract of a document.
|
|
555
|
*/
|
|
556
|
private void handleViewAbstractAction(PrintWriter out, Hashtable params,
|
|
557
|
HttpServletResponse response) throws IOException, SQLException
|
|
558
|
{
|
|
559
|
String abstractpath = null;
|
|
560
|
String docid = null;
|
|
561
|
Connection conn = null;
|
|
562
|
response.setContentType("text/html");
|
|
563
|
try
|
|
564
|
{
|
|
565
|
docid = ((String[])params.get("docid"))[0];
|
|
566
|
if(params.containsKey("abstractpath"))
|
|
567
|
{
|
|
568
|
abstractpath = ((String[])params.get("abstractpath"))[0];
|
|
569
|
}
|
|
570
|
else
|
|
571
|
{
|
|
572
|
out.println("error: no abstractpath parameter");
|
|
573
|
}
|
|
574
|
conn = util.getConnection();
|
|
575
|
|
|
576
|
Object[] abstracts = DBQuery.getNodeContent(abstractpath, docid, conn);
|
|
577
|
|
|
578
|
out.println("<html><head><title>Abstract</title></head><body>");
|
|
579
|
out.println("<h1>Abstract</h1>");
|
|
580
|
for(int i=0; i<abstracts.length; i++)
|
|
581
|
{
|
|
582
|
out.println("<p>" + (String)abstracts[i] + "</p>");
|
|
583
|
}
|
|
584
|
out.println("</body></html>");
|
|
585
|
}
|
|
586
|
catch (IOException ioe)
|
|
587
|
{
|
|
588
|
System.out.println(ioe.getMessage());
|
|
589
|
}
|
|
590
|
catch(SQLException sqle)
|
|
591
|
{
|
|
592
|
System.out.println(sqle.getMessage());
|
|
593
|
}
|
|
594
|
catch(Exception e)
|
|
595
|
{
|
|
596
|
System.out.println(e.getMessage());
|
|
597
|
}
|
|
598
|
|
|
599
|
util.returnConnection(conn);
|
|
600
|
}
|
|
601
|
|
|
602
|
/**
|
|
603
|
* Handle the database getdocument request and return a XML document,
|
|
604
|
* possibly transformed from XML into HTML
|
|
605
|
*/
|
|
606
|
private void handleGetDocumentAction(PrintWriter out, Hashtable params,
|
|
607
|
HttpServletResponse response)
|
|
608
|
throws ClassNotFoundException, IOException, SQLException {
|
|
609
|
String docidstr = null;
|
|
610
|
String docid = null;
|
|
611
|
String doc = null;
|
|
612
|
Connection conn = null;
|
|
613
|
|
|
614
|
try {
|
|
615
|
// Find the document id number
|
|
616
|
docidstr = ((String[])params.get("docid"))[0];
|
|
617
|
docid = docidstr;
|
|
618
|
conn = util.getConnection();
|
|
619
|
DocumentImpl xmldoc = new DocumentImpl(conn, docid);
|
|
620
|
// Get the document indicated from the db
|
|
621
|
//doc = docreader.readXMLDocument(docid);
|
|
622
|
|
|
623
|
// Return the document in XML or HTML format
|
|
624
|
String qformat=null;
|
|
625
|
if(params.containsKey("qformat"))
|
|
626
|
{
|
|
627
|
qformat = ((String[])params.get("qformat"))[0];
|
|
628
|
}
|
|
629
|
else
|
|
630
|
{
|
|
631
|
qformat = "html";
|
|
632
|
}
|
|
633
|
if (qformat.equals("xml")) {
|
|
634
|
// set content type and other response header fields first
|
|
635
|
response.setContentType("text/xml");
|
|
636
|
xmldoc.toXml(out);
|
|
637
|
//out.println(xmldoc);
|
|
638
|
} else if (qformat.equals("html")) {
|
|
639
|
response.setContentType("text/html");
|
|
640
|
// Look up the document type
|
|
641
|
String sourcetype = xmldoc.getDoctype();
|
|
642
|
// Transform the document to the new doctype
|
|
643
|
DBTransform dbt = new DBTransform(conn);
|
|
644
|
dbt.transformXMLDocument(xmldoc.toString(), sourcetype,
|
|
645
|
"-//W3C//HTML//EN", out);
|
|
646
|
}
|
|
647
|
} catch (McdbException e) {
|
|
648
|
response.setContentType("text/xml");
|
|
649
|
e.toXml(out);
|
|
650
|
} catch (Throwable t) {
|
|
651
|
response.setContentType("text/html");
|
|
652
|
out.println(t.getMessage());
|
|
653
|
} finally {
|
|
654
|
util.returnConnection(conn);
|
|
655
|
}
|
|
656
|
|
|
657
|
}
|
|
658
|
|
|
659
|
/**
|
|
660
|
* Handle the database putdocument request and write an XML document
|
|
661
|
* to the database connection
|
|
662
|
*/
|
|
663
|
private void handleInsertOrUpdateAction(PrintWriter out, Hashtable params,
|
|
664
|
HttpServletResponse response, String user, String group) {
|
|
665
|
|
|
666
|
Connection conn = null;
|
|
667
|
|
|
668
|
try {
|
|
669
|
// Get the document indicated
|
|
670
|
String[] doctext = (String[])params.get("doctext");
|
|
671
|
StringReader xml = null;
|
|
672
|
try {
|
|
673
|
xml = new StringReader(doctext[0]);
|
|
674
|
|
|
675
|
String[] action = (String[])params.get("action");
|
|
676
|
String[] docid = (String[])params.get("docid");
|
|
677
|
String newdocid = null;
|
|
678
|
|
|
679
|
String doAction = null;
|
|
680
|
if (action[0].equals("insert")) {
|
|
681
|
doAction = "INSERT";
|
|
682
|
} else if (action[0].equals("update")) {
|
|
683
|
doAction = "UPDATE";
|
|
684
|
}
|
|
685
|
|
|
686
|
try {
|
|
687
|
// get a connection from the pool
|
|
688
|
conn = util.getConnection();
|
|
689
|
|
|
690
|
// write the document to the database
|
|
691
|
try {
|
|
692
|
String accNumber = docid[0];
|
|
693
|
if (accNumber.equals("")) {
|
|
694
|
accNumber = null;
|
|
695
|
}
|
|
696
|
newdocid = DocumentImpl.write(conn, xml, doAction, accNumber,
|
|
697
|
user, group);
|
|
698
|
} catch (NullPointerException npe) {
|
|
699
|
newdocid = DocumentImpl.write(conn,xml,doAction,null,user,group);
|
|
700
|
}
|
|
701
|
} catch (Exception e) {
|
|
702
|
response.setContentType("text/html");
|
|
703
|
out.println(e.getMessage());
|
|
704
|
} finally {
|
|
705
|
util.returnConnection(conn);
|
|
706
|
}
|
|
707
|
|
|
708
|
// set content type and other response header fields first
|
|
709
|
response.setContentType("text/xml");
|
|
710
|
out.println("<?xml version=\"1.0\"?>");
|
|
711
|
out.println("<success>");
|
|
712
|
out.println("<docid>" + newdocid + "</docid>");
|
|
713
|
out.println("</success>");
|
|
714
|
|
|
715
|
} catch (NullPointerException npe) {
|
|
716
|
response.setContentType("text/xml");
|
|
717
|
out.println("<?xml version=\"1.0\"?>");
|
|
718
|
out.println("<error>");
|
|
719
|
out.println(npe.getMessage());
|
|
720
|
out.println("</error>");
|
|
721
|
}
|
|
722
|
} catch (Exception e) {
|
|
723
|
response.setContentType("text/xml");
|
|
724
|
out.println("<?xml version=\"1.0\"?>");
|
|
725
|
out.println("<error>");
|
|
726
|
out.println(e.getMessage());
|
|
727
|
if (e instanceof SAXException) {
|
|
728
|
Exception e2 = ((SAXException)e).getException();
|
|
729
|
out.println("<error>");
|
|
730
|
out.println(e2.getMessage());
|
|
731
|
out.println("</error>");
|
|
732
|
}
|
|
733
|
//e.printStackTrace(out);
|
|
734
|
out.println("</error>");
|
|
735
|
}
|
|
736
|
}
|
|
737
|
|
|
738
|
/**
|
|
739
|
* Handle the database delete request and delete an XML document
|
|
740
|
* from the database connection
|
|
741
|
*/
|
|
742
|
private void handleDeleteAction(PrintWriter out, Hashtable params,
|
|
743
|
HttpServletResponse response, String user, String group) {
|
|
744
|
|
|
745
|
String[] docid = (String[])params.get("docid");
|
|
746
|
Connection conn = null;
|
|
747
|
|
|
748
|
// delete the document from the database
|
|
749
|
try {
|
|
750
|
// get a connection from the pool
|
|
751
|
conn = util.getConnection();
|
|
752
|
// NOTE -- NEED TO TEST HERE
|
|
753
|
// FOR EXISTENCE OF DOCID PARAM
|
|
754
|
// BEFORE ACCESSING ARRAY
|
|
755
|
try {
|
|
756
|
DocumentImpl.delete(conn, docid[0], user, group);
|
|
757
|
response.setContentType("text/xml");
|
|
758
|
out.println("<?xml version=\"1.0\"?>");
|
|
759
|
out.println("<success>");
|
|
760
|
out.println("Document deleted.");
|
|
761
|
out.println("</success>");
|
|
762
|
} catch (AccessionNumberException ane) {
|
|
763
|
response.setContentType("text/xml");
|
|
764
|
out.println("<?xml version=\"1.0\"?>");
|
|
765
|
out.println("<error>");
|
|
766
|
out.println("Error deleting document!!!");
|
|
767
|
out.println(ane.getMessage());
|
|
768
|
out.println("</error>");
|
|
769
|
}
|
|
770
|
} catch (Exception e) {
|
|
771
|
response.setContentType("text/xml");
|
|
772
|
out.println("<?xml version=\"1.0\"?>");
|
|
773
|
out.println("<error>");
|
|
774
|
out.println(e.getMessage());
|
|
775
|
out.println("</error>");
|
|
776
|
} finally {
|
|
777
|
util.returnConnection(conn);
|
|
778
|
}
|
|
779
|
}
|
|
780
|
|
|
781
|
/**
|
|
782
|
* Handle the validation request and return the results to the requestor
|
|
783
|
*/
|
|
784
|
private void handleValidateAction(PrintWriter out, Hashtable params,
|
|
785
|
HttpServletResponse response) {
|
|
786
|
|
|
787
|
// Get the document indicated
|
|
788
|
String valtext = null;
|
|
789
|
|
|
790
|
try {
|
|
791
|
valtext = ((String[])params.get("valtext"))[0];
|
|
792
|
} catch (Exception nullpe) {
|
|
793
|
|
|
794
|
Connection conn = null;
|
|
795
|
String docid = null;
|
|
796
|
try {
|
|
797
|
// Find the document id number
|
|
798
|
docid = ((String[])params.get("docid"))[0];
|
|
799
|
|
|
800
|
// get a connection from the pool
|
|
801
|
conn = util.getConnection();
|
|
802
|
|
|
803
|
// Get the document indicated from the db
|
|
804
|
DocumentImpl xmldoc = new DocumentImpl(conn, docid);
|
|
805
|
valtext = xmldoc.toString();
|
|
806
|
|
|
807
|
} catch (NullPointerException npe) {
|
|
808
|
response.setContentType("text/xml");
|
|
809
|
out.println("<error>Error getting document ID: " + docid + "</error>");
|
|
810
|
if ( conn != null ) { util.returnConnection(conn); }
|
|
811
|
return;
|
|
812
|
} catch (Exception e) {
|
|
813
|
response.setContentType("text/html");
|
|
814
|
out.println(e.getMessage());
|
|
815
|
} finally {
|
|
816
|
util.returnConnection(conn);
|
|
817
|
}
|
|
818
|
}
|
|
819
|
|
|
820
|
Connection conn = null;
|
|
821
|
try {
|
|
822
|
// get a connection from the pool
|
|
823
|
conn = util.getConnection();
|
|
824
|
DBValidate valobj = new DBValidate(saxparser,conn);
|
|
825
|
boolean valid = valobj.validateString(valtext);
|
|
826
|
|
|
827
|
// set content type and other response header fields first
|
|
828
|
response.setContentType("text/xml");
|
|
829
|
out.println(valobj.returnErrors());
|
|
830
|
|
|
831
|
} catch (NullPointerException npe2) {
|
|
832
|
// set content type and other response header fields first
|
|
833
|
response.setContentType("text/xml");
|
|
834
|
out.println("<error>Error validating document.</error>");
|
|
835
|
} catch (Exception e) {
|
|
836
|
response.setContentType("text/html");
|
|
837
|
out.println(e.getMessage());
|
|
838
|
} finally {
|
|
839
|
util.returnConnection(conn);
|
|
840
|
}
|
|
841
|
}
|
|
842
|
|
|
843
|
/**
|
|
844
|
* Handle the document request and return the results to the requestor
|
|
845
|
*/
|
|
846
|
private void handleGetDataDocumentAction(PrintWriter out, Hashtable params,
|
|
847
|
HttpServletResponse response) {
|
|
848
|
boolean error_flag = false;
|
|
849
|
String error_message = "";
|
|
850
|
// Get the document indicated
|
|
851
|
String[] datadoc = (String[])params.get("datadoc");
|
|
852
|
// defaultdatapath = "C:\\Temp\\"; // for testing only!!!
|
|
853
|
// executescript = "test.bat"; // for testing only!!!
|
|
854
|
|
|
855
|
// set content type and other response header fields first
|
|
856
|
response.setContentType("application/octet-stream");
|
|
857
|
if (defaultdatapath!=null) {
|
|
858
|
if(!defaultdatapath.endsWith(System.getProperty("file.separator"))) {
|
|
859
|
defaultdatapath=defaultdatapath+System.getProperty("file.separator");
|
|
860
|
}
|
|
861
|
System.out.println("Path= "+defaultdatapath+datadoc[0]);
|
|
862
|
if (executescript!=null) {
|
|
863
|
String command = null;
|
|
864
|
File scriptfile = new File(executescript);
|
|
865
|
if (scriptfile.exists()) {
|
|
866
|
command=executescript+" "+datadoc[0]; // script includes path
|
|
867
|
} else { // look in defaultdatapath
|
|
868
|
// on Win98 one MUST include the .bat extender
|
|
869
|
command = defaultdatapath+executescript+" "+datadoc[0];
|
|
870
|
}
|
|
871
|
System.out.println(command);
|
|
872
|
try {
|
|
873
|
Process proc = Runtime.getRuntime().exec(command);
|
|
874
|
proc.waitFor();
|
|
875
|
}
|
|
876
|
catch (Exception eee) {
|
|
877
|
System.out.println("Error running process!");
|
|
878
|
error_flag = true;
|
|
879
|
error_message = "Error running process!";}
|
|
880
|
} // end executescript not null if
|
|
881
|
File datafile = new File(defaultdatapath+datadoc[0]);
|
|
882
|
try {
|
|
883
|
FileInputStream fw = new FileInputStream(datafile);
|
|
884
|
int x;
|
|
885
|
while ((x = fw.read())!=-1) {
|
|
886
|
out.write(x); }
|
|
887
|
fw.close();
|
|
888
|
} catch (Exception e) {
|
|
889
|
System.out.println("Error in returning file\n"+e.getMessage());
|
|
890
|
error_flag=true;
|
|
891
|
error_message = error_message+"\nError in returning file\n"+
|
|
892
|
e.getMessage();
|
|
893
|
}
|
|
894
|
} // end defaultdatapath not null if
|
|
895
|
}
|
|
896
|
|
|
897
|
/**
|
|
898
|
* Handle the getdoctypes Action.
|
|
899
|
* Read all doctypes from db connection in XML format
|
|
900
|
*/
|
|
901
|
private void handleGetDoctypesAction(PrintWriter out, Hashtable params,
|
|
902
|
HttpServletResponse response) {
|
|
903
|
|
|
904
|
Connection conn = null;
|
|
905
|
|
|
906
|
try {
|
|
907
|
|
|
908
|
// get connection from the pool
|
|
909
|
conn = util.getConnection();
|
|
910
|
DBUtil dbutil = new DBUtil(conn);
|
|
911
|
String doctypes = dbutil.readDoctypes();
|
|
912
|
out.println(doctypes);
|
|
913
|
|
|
914
|
} catch (Exception e) {
|
|
915
|
out.println("<?xml version=\"1.0\"?>");
|
|
916
|
out.println("<error>");
|
|
917
|
out.println(e.getMessage());
|
|
918
|
out.println("</error>");
|
|
919
|
} finally {
|
|
920
|
util.returnConnection(conn);
|
|
921
|
}
|
|
922
|
|
|
923
|
}
|
|
924
|
|
|
925
|
/**
|
|
926
|
* Handle the getdataguide Action.
|
|
927
|
* Read Data Guide for a given doctype from db connection in XML format
|
|
928
|
*/
|
|
929
|
private void handleGetDataGuideAction(PrintWriter out, Hashtable params,
|
|
930
|
HttpServletResponse response) {
|
|
931
|
|
|
932
|
Connection conn = null;
|
|
933
|
String doctype = null;
|
|
934
|
String[] doctypeArr = (String[])params.get("doctype");
|
|
935
|
|
|
936
|
// get only the first doctype specified in the list of doctypes
|
|
937
|
// it could be done for all doctypes in that list
|
|
938
|
if (doctypeArr != null) {
|
|
939
|
doctype = ((String[])params.get("doctype"))[0];
|
|
940
|
}
|
|
941
|
|
|
942
|
try {
|
|
943
|
|
|
944
|
// get connection from the pool
|
|
945
|
conn = util.getConnection();
|
|
946
|
DBUtil dbutil = new DBUtil(conn);
|
|
947
|
String dataguide = dbutil.readDataGuide(doctype);
|
|
948
|
out.println(dataguide);
|
|
949
|
|
|
950
|
} catch (Exception e) {
|
|
951
|
out.println("<?xml version=\"1.0\"?>");
|
|
952
|
out.println("<error>");
|
|
953
|
out.println(e.getMessage());
|
|
954
|
out.println("</error>");
|
|
955
|
} finally {
|
|
956
|
util.returnConnection(conn);
|
|
957
|
}
|
|
958
|
|
|
959
|
}
|
|
960
|
|
|
961
|
}
|