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51
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/**
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203
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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
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154
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*
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203
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* '$Author$'
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* '$Date$'
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* '$Revision$'
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51
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jones
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*/
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package edu.ucsb.nceas.metacat;
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46
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jones
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import java.io.PrintWriter;
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import java.io.IOException;
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50
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jones
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import java.io.Reader;
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import java.io.StringReader;
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59
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jones
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import java.io.BufferedReader;
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185
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jones
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import java.io.File;
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import java.io.FileInputStream;
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46
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jones
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import java.util.Enumeration;
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import java.util.Hashtable;
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82
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jones
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import java.util.ResourceBundle;
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import java.util.PropertyResourceBundle;
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50
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import java.net.URL;
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import java.net.MalformedURLException;
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85
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import java.sql.PreparedStatement;
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import java.sql.ResultSet;
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50
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import java.sql.Connection;
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55
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import java.sql.SQLException;
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46
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jones
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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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48
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import javax.servlet.ServletInputStream;
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46
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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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210
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import javax.servlet.http.HttpSession;
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47
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import javax.servlet.http.HttpUtils;
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46
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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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204
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import org.xml.sax.SAXException;
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46
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/**
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* A metadata catalog server implemented as a Java Servlet
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154
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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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205
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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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154
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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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183
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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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* 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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46
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jones
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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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181
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private Connection conn = null;
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private DBQuery queryobj = null;
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private DBReader docreader = null;
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private DBTransform dbt = null;
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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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184
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private MetaCatUtil util = null;
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50
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/**
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* Initialize the servlet by creating appropriate database connections
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*/
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46
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jones
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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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184
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jones
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System.out.println("MetaCatServlet Initialize");
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82
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jones
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184
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jones
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util = new MetaCatUtil();
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83
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jones
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// Get the configuration file information
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jones
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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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82
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jones
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46
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jones
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try {
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50
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jones
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// Open a connection to the database
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184
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jones
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conn = util.openDBConnection();
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50
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jones
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181
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jones
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queryobj = new DBQuery(conn,saxparser);
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55
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jones
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docreader = new DBReader(conn);
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87
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jones
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dbt = new DBTransform(conn);
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68
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higgins
|
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46
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jones
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} catch (Exception e) {
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100
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jones
|
System.err.println("Error opening database connection");
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46
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jones
|
}
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| 127 |
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} catch ( ServletException ex ) {
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| 128 |
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throw ex;
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| 129 |
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}
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| 130 |
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}
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| 131 |
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| 132 |
50
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jones
|
/** Handle "GET" method requests from HTTP clients */
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| 133 |
46
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jones
|
public void doGet (HttpServletRequest request, HttpServletResponse response)
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| 134 |
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throws ServletException, IOException {
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| 135 |
|
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| 136 |
48
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jones
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// Process the data and send back the response
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| 137 |
59
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jones
|
handleGetOrPost(request, response);
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| 138 |
48
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jones
|
}
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| 139 |
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| 140 |
50
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jones
|
/** Handle "POST" method requests from HTTP clients */
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| 141 |
48
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jones
|
public void doPost( HttpServletRequest request, HttpServletResponse response)
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| 142 |
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throws ServletException, IOException {
|
| 143 |
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| 144 |
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// Process the data and send back the response
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| 145 |
59
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jones
|
handleGetOrPost(request, response);
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| 146 |
48
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jones
|
}
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| 147 |
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| 148 |
49
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jones
|
/**
|
| 149 |
50
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jones
|
* Control servlet response depending on the action parameter specified
|
| 150 |
49
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jones
|
*/
|
| 151 |
59
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jones
|
private void handleGetOrPost(HttpServletRequest request,
|
| 152 |
|
|
HttpServletResponse response)
|
| 153 |
48
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jones
|
throws ServletException, IOException {
|
| 154 |
|
|
|
| 155 |
100
|
jones
|
if (conn == null) {
|
| 156 |
|
|
System.err.println("Connection to database lost. Reopening...");
|
| 157 |
|
|
try {
|
| 158 |
|
|
// Open a connection to the database
|
| 159 |
184
|
jones
|
conn = util.openDBConnection();
|
| 160 |
100
|
jones
|
|
| 161 |
181
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jones
|
queryobj = new DBQuery(conn, saxparser);
|
| 162 |
100
|
jones
|
docreader = new DBReader(conn);
|
| 163 |
|
|
dbt = new DBTransform(conn);
|
| 164 |
|
|
|
| 165 |
|
|
} catch (Exception e) {
|
| 166 |
|
|
System.err.println("Error opening database connection");
|
| 167 |
|
|
}
|
| 168 |
|
|
}
|
| 169 |
|
|
|
| 170 |
49
|
jones
|
// Get a handle to the output stream back to the client
|
| 171 |
48
|
jones
|
PrintWriter out = response.getWriter();
|
| 172 |
102
|
jones
|
//response.setContentType("text/html");
|
| 173 |
49
|
jones
|
|
| 174 |
59
|
jones
|
String name = null;
|
| 175 |
|
|
String[] value = null;
|
| 176 |
103
|
jones
|
String[] docid = new String[3];
|
| 177 |
59
|
jones
|
Hashtable params = new Hashtable();
|
| 178 |
|
|
Enumeration paramlist = request.getParameterNames();
|
| 179 |
|
|
while (paramlist.hasMoreElements()) {
|
| 180 |
|
|
name = (String)paramlist.nextElement();
|
| 181 |
|
|
value = request.getParameterValues(name);
|
| 182 |
103
|
jones
|
|
| 183 |
|
|
// Decode the docid and mouse click information
|
| 184 |
|
|
if (name.endsWith(".y")) {
|
| 185 |
|
|
docid[0] = name.substring(0,name.length()-2);
|
| 186 |
|
|
//out.println("docid => " + docid[0]);
|
| 187 |
|
|
params.put("docid", docid);
|
| 188 |
|
|
name = "ypos";
|
| 189 |
|
|
}
|
| 190 |
|
|
if (name.endsWith(".x")) {
|
| 191 |
|
|
name = "xpos";
|
| 192 |
|
|
}
|
| 193 |
|
|
|
| 194 |
102
|
jones
|
//out.println(name + " => " + value[0]);
|
| 195 |
59
|
jones
|
params.put(name,value);
|
| 196 |
|
|
}
|
| 197 |
|
|
|
| 198 |
103
|
jones
|
// Determine what type of request the user made
|
| 199 |
|
|
// if the action parameter is set, use it as a default
|
| 200 |
|
|
// but if the ypos param is set, calculate the action needed
|
| 201 |
49
|
jones
|
String action = ((String[])params.get("action"))[0];
|
| 202 |
103
|
jones
|
long ypos = 0;
|
| 203 |
|
|
try {
|
| 204 |
|
|
ypos = (new Long(((String[])params.get("ypos"))[0]).longValue());
|
| 205 |
|
|
//out.println("<P>YPOS IS " + ypos);
|
| 206 |
|
|
if (ypos <= 13) {
|
| 207 |
|
|
action = "getdocument";
|
| 208 |
|
|
} else if (ypos > 13 && ypos <= 27) {
|
| 209 |
|
|
action = "validate";
|
| 210 |
|
|
} else if (ypos > 27) {
|
| 211 |
|
|
action = "transform";
|
| 212 |
|
|
} else {
|
| 213 |
|
|
action = "";
|
| 214 |
|
|
}
|
| 215 |
|
|
} catch (Exception npe) {
|
| 216 |
|
|
//out.println("<P>Caught exception looking for Y value.");
|
| 217 |
|
|
}
|
| 218 |
210
|
bojilova
|
// Jivka added
|
| 219 |
|
|
// handle login action
|
| 220 |
|
|
if (action.equals("Login")) {
|
| 221 |
|
|
handleLoginAction(out, params, request, response);
|
| 222 |
|
|
// handle logout action
|
| 223 |
|
|
} else if (action.equals("Logout")) {
|
| 224 |
|
|
HttpSession sess = request.getSession(false);
|
| 225 |
|
|
if (sess != null) {
|
| 226 |
|
|
sess.invalidate();
|
| 227 |
|
|
response.sendRedirect("/xmltodb/lib/login.html");
|
| 228 |
|
|
}
|
| 229 |
|
|
// aware of session expiration on every request
|
| 230 |
|
|
} else {
|
| 231 |
|
|
HttpSession sess = request.getSession(false);
|
| 232 |
|
|
if (sess == null) {
|
| 233 |
|
|
out.println("Session expired. You will be redirected to Login page again.");
|
| 234 |
|
|
response.sendRedirect("/xmltodb/lib/login.html");
|
| 235 |
|
|
}
|
| 236 |
|
|
}
|
| 237 |
|
|
// End of Jivka added
|
| 238 |
181
|
jones
|
if (action.equals("query") || action.equals("squery")) {
|
| 239 |
49
|
jones
|
handleQueryAction(out, params, response);
|
| 240 |
|
|
} else if (action.equals("getdocument")) {
|
| 241 |
87
|
jones
|
try {
|
| 242 |
|
|
handleGetDocumentAction(out, params, response);
|
| 243 |
|
|
} catch (ClassNotFoundException e) {
|
| 244 |
103
|
jones
|
out.println(e.getMessage());
|
| 245 |
87
|
jones
|
} catch (SQLException se) {
|
| 246 |
103
|
jones
|
out.println(se.getMessage());
|
| 247 |
87
|
jones
|
}
|
| 248 |
203
|
jones
|
} else if (action.equals("insert") || action.equals("update")) {
|
| 249 |
|
|
handleInsertOrUpdateAction(out, params, response);
|
| 250 |
|
|
} else if (action.equals("delete")) {
|
| 251 |
|
|
handleDeleteAction(out, params, response);
|
| 252 |
68
|
higgins
|
} else if (action.equals("validate")) {
|
| 253 |
|
|
handleValidateAction(out, params, response);
|
| 254 |
91
|
higgins
|
} else if (action.equals("getdatadoc")) {
|
| 255 |
|
|
handleGetDataDocumentAction(out, params, response);
|
| 256 |
50
|
jones
|
} else {
|
| 257 |
|
|
out.println("Error: action not registered. Please report this error.");
|
| 258 |
46
|
jones
|
}
|
| 259 |
|
|
|
| 260 |
49
|
jones
|
// Close the stream to the client
|
| 261 |
46
|
jones
|
out.close();
|
| 262 |
|
|
}
|
| 263 |
49
|
jones
|
|
| 264 |
210
|
bojilova
|
// Jivka added
|
| 265 |
50
|
jones
|
/**
|
| 266 |
210
|
bojilova
|
* Handle the Login request. Create a new session object.
|
| 267 |
|
|
* Make a user authentication through SRB RMI Connection.
|
| 268 |
|
|
*/
|
| 269 |
|
|
private void handleLoginAction(PrintWriter out, Hashtable params,
|
| 270 |
|
|
HttpServletRequest request, HttpServletResponse response) {
|
| 271 |
|
|
String un = (String)params.get("username");
|
| 272 |
|
|
String pw = (String)params.get("password");
|
| 273 |
|
|
|
| 274 |
|
|
MetaCatSession sess = new MetaCatSession(request, un, pw);
|
| 275 |
|
|
try {
|
| 276 |
|
|
if (sess.userAuth(pw)) {
|
| 277 |
|
|
try {
|
| 278 |
|
|
response.sendRedirect("/xmltodb/lib/index.html");
|
| 279 |
|
|
} catch ( java.io.IOException ioe) {
|
| 280 |
|
|
sess.disconnect();
|
| 281 |
|
|
out.println("MetaCatServlet.handleLoginAction() - " +
|
| 282 |
|
|
"Error on redirect of HttpServletResponse: " +
|
| 283 |
|
|
ioe.getMessage());
|
| 284 |
|
|
}
|
| 285 |
|
|
|
| 286 |
|
|
} else {
|
| 287 |
|
|
sess.disconnect();
|
| 288 |
|
|
out.println("SRB Connection failed. " +
|
| 289 |
|
|
"SRB RMI Server is not running now or " +
|
| 290 |
|
|
"user " + un +
|
| 291 |
|
|
" has not been authenticated to use the system");
|
| 292 |
|
|
}
|
| 293 |
|
|
} catch ( java.rmi.RemoteException re) {
|
| 294 |
|
|
sess.disconnect();
|
| 295 |
|
|
out.println("SRB Connection failed. " + re.getMessage());
|
| 296 |
|
|
}
|
| 297 |
|
|
}
|
| 298 |
|
|
/**
|
| 299 |
50
|
jones
|
* Handle the database query request and return a result set, possibly
|
| 300 |
|
|
* transformed from XML into HTML
|
| 301 |
|
|
*/
|
| 302 |
49
|
jones
|
private void handleQueryAction(PrintWriter out, Hashtable params,
|
| 303 |
|
|
HttpServletResponse response) {
|
| 304 |
181
|
jones
|
String action = ((String[])params.get("action"))[0];
|
| 305 |
|
|
String query = ((String[])params.get("query"))[0];
|
| 306 |
167
|
jones
|
Hashtable doclist = null;
|
| 307 |
181
|
jones
|
String[] doctypeArr = null;
|
| 308 |
154
|
jones
|
String doctype = null;
|
| 309 |
181
|
jones
|
Reader xmlquery = null;
|
| 310 |
|
|
|
| 311 |
|
|
// Run the query if it is a structured query
|
| 312 |
|
|
// or, if it is a free-text, simple query,
|
| 313 |
|
|
// format it first as a structured query and then run it
|
| 314 |
|
|
if (action.equals("query")) {
|
| 315 |
|
|
doctypeArr = (String[])params.get("doctype");
|
| 316 |
|
|
doctype = null;
|
| 317 |
|
|
if (doctypeArr != null) {
|
| 318 |
|
|
doctype = ((String[])params.get("doctype"))[0];
|
| 319 |
|
|
}
|
| 320 |
|
|
|
| 321 |
154
|
jones
|
if (doctype != null) {
|
| 322 |
181
|
jones
|
xmlquery = new StringReader(DBQuery.createQuery(query,doctype));
|
| 323 |
154
|
jones
|
} else {
|
| 324 |
181
|
jones
|
xmlquery = new StringReader(DBQuery.createQuery(query));
|
| 325 |
154
|
jones
|
}
|
| 326 |
181
|
jones
|
} else if (action.equals("squery")) {
|
| 327 |
|
|
xmlquery = new StringReader(query);
|
| 328 |
82
|
jones
|
} else {
|
| 329 |
181
|
jones
|
System.err.println("Error handling query -- illegal action value");
|
| 330 |
|
|
}
|
| 331 |
|
|
|
| 332 |
|
|
if (queryobj != null) {
|
| 333 |
|
|
doclist = queryobj.findDocuments(xmlquery);
|
| 334 |
|
|
} else {
|
| 335 |
82
|
jones
|
out.println("Query Object Init failed.");
|
| 336 |
83
|
jones
|
return;
|
| 337 |
82
|
jones
|
}
|
| 338 |
50
|
jones
|
|
| 339 |
|
|
// Create a buffer to hold the xml result
|
| 340 |
|
|
StringBuffer resultset = new StringBuffer();
|
| 341 |
|
|
|
| 342 |
49
|
jones
|
// Print the resulting root nodes
|
| 343 |
167
|
jones
|
String docid;
|
| 344 |
98
|
jones
|
String document = null;
|
| 345 |
50
|
jones
|
resultset.append("<?xml version=\"1.0\"?>\n");
|
| 346 |
87
|
jones
|
//resultset.append("<!DOCTYPE resultset PUBLIC " +
|
| 347 |
|
|
// "\"-//NCEAS//resultset//EN\" \"resultset.dtd\">\n");
|
| 348 |
50
|
jones
|
resultset.append("<resultset>\n");
|
| 349 |
|
|
resultset.append(" <query>" + query + "</query>");
|
| 350 |
167
|
jones
|
Enumeration doclistkeys = doclist.keys();
|
| 351 |
|
|
while (doclistkeys.hasMoreElements()) {
|
| 352 |
|
|
docid = (String)doclistkeys.nextElement();
|
| 353 |
|
|
document = (String)doclist.get(docid);
|
| 354 |
98
|
jones
|
resultset.append(" <document>" + document + "</document>");
|
| 355 |
49
|
jones
|
}
|
| 356 |
50
|
jones
|
resultset.append("</resultset>");
|
| 357 |
|
|
|
| 358 |
|
|
String qformat = ((String[])params.get("qformat"))[0];
|
| 359 |
|
|
if (qformat.equals("xml")) {
|
| 360 |
|
|
// set content type and other response header fields first
|
| 361 |
|
|
response.setContentType("text/xml");
|
| 362 |
|
|
out.println(resultset.toString());
|
| 363 |
|
|
} else if (qformat.equals("html")) {
|
| 364 |
|
|
// set content type and other response header fields first
|
| 365 |
|
|
response.setContentType("text/html");
|
| 366 |
|
|
//out.println("Converting to HTML...");
|
| 367 |
|
|
XMLDocumentFragment htmldoc = null;
|
| 368 |
|
|
try {
|
| 369 |
185
|
jones
|
XSLStylesheet style = new XSLStylesheet(
|
| 370 |
|
|
new URL(resultStyleURL), null);
|
| 371 |
50
|
jones
|
htmldoc = (new XSLProcessor()).processXSL(style,
|
| 372 |
|
|
(Reader)(new StringReader(resultset.toString())),null);
|
| 373 |
|
|
htmldoc.print(out);
|
| 374 |
|
|
} catch (Exception e) {
|
| 375 |
|
|
out.println("Error transforming document:\n" + e.getMessage());
|
| 376 |
|
|
}
|
| 377 |
|
|
}
|
| 378 |
49
|
jones
|
}
|
| 379 |
|
|
|
| 380 |
50
|
jones
|
/**
|
| 381 |
|
|
* Handle the database getdocument request and return a XML document,
|
| 382 |
|
|
* possibly transformed from XML into HTML
|
| 383 |
|
|
*/
|
| 384 |
49
|
jones
|
private void handleGetDocumentAction(PrintWriter out, Hashtable params,
|
| 385 |
87
|
jones
|
HttpServletResponse response)
|
| 386 |
|
|
throws ClassNotFoundException, IOException, SQLException {
|
| 387 |
102
|
jones
|
String docidstr = null;
|
| 388 |
162
|
bojilova
|
String docid = null;
|
| 389 |
102
|
jones
|
String doc = null;
|
| 390 |
|
|
try {
|
| 391 |
87
|
jones
|
// Find the document id number
|
| 392 |
102
|
jones
|
docidstr = ((String[])params.get("docid"))[0];
|
| 393 |
162
|
bojilova
|
//docid = (new Long(docidstr)).longValue();
|
| 394 |
|
|
docid = docidstr;
|
| 395 |
49
|
jones
|
|
| 396 |
87
|
jones
|
// Get the document indicated fromthe db
|
| 397 |
102
|
jones
|
doc = docreader.readXMLDocument(docid);
|
| 398 |
|
|
} catch (NullPointerException npe) {
|
| 399 |
|
|
response.setContentType("text/html");
|
| 400 |
|
|
out.println("Error getting document ID: " + docidstr +" (" + docid + ")");
|
| 401 |
|
|
}
|
| 402 |
85
|
jones
|
|
| 403 |
87
|
jones
|
// Return the document in XML or HTML format
|
| 404 |
85
|
jones
|
String qformat = ((String[])params.get("qformat"))[0];
|
| 405 |
|
|
if (qformat.equals("xml")) {
|
| 406 |
|
|
// set content type and other response header fields first
|
| 407 |
|
|
response.setContentType("text/xml");
|
| 408 |
|
|
out.println(doc);
|
| 409 |
|
|
} else if (qformat.equals("html")) {
|
| 410 |
|
|
// set content type and other response header fields first
|
| 411 |
|
|
response.setContentType("text/html");
|
| 412 |
|
|
|
| 413 |
87
|
jones
|
// Look up the document type
|
| 414 |
103
|
jones
|
String sourcetype = docreader.getDoctypeInfo(docid).getDoctype();
|
| 415 |
86
|
jones
|
|
| 416 |
87
|
jones
|
// Transform the document to the new doctype
|
| 417 |
|
|
dbt.transformXMLDocument(doc, sourcetype, "-//W3C//HTML//EN", out);
|
| 418 |
85
|
jones
|
}
|
| 419 |
49
|
jones
|
}
|
| 420 |
55
|
jones
|
|
| 421 |
|
|
/**
|
| 422 |
|
|
* Handle the database putdocument request and write an XML document
|
| 423 |
|
|
* to the database connection
|
| 424 |
|
|
*/
|
| 425 |
203
|
jones
|
private void handleInsertOrUpdateAction(PrintWriter out, Hashtable params,
|
| 426 |
55
|
jones
|
HttpServletResponse response) {
|
| 427 |
59
|
jones
|
|
| 428 |
204
|
jones
|
try {
|
| 429 |
|
|
// Get the document indicated
|
| 430 |
|
|
String[] doctext = (String[])params.get("doctext");
|
| 431 |
|
|
StringReader xml = null;
|
| 432 |
|
|
try {
|
| 433 |
|
|
xml = new StringReader(doctext[0]);
|
| 434 |
59
|
jones
|
|
| 435 |
204
|
jones
|
String[] action = (String[])params.get("action");
|
| 436 |
|
|
String[] docid = (String[])params.get("docid");
|
| 437 |
|
|
String newdocid = null;
|
| 438 |
203
|
jones
|
|
| 439 |
204
|
jones
|
String doAction = null;
|
| 440 |
|
|
if (action[0].equals("insert")) {
|
| 441 |
|
|
doAction = "INSERT";
|
| 442 |
|
|
} else if (action[0].equals("update")) {
|
| 443 |
|
|
doAction = "UPDATE";
|
| 444 |
|
|
}
|
| 445 |
203
|
jones
|
|
| 446 |
204
|
jones
|
// write the document to the database
|
| 447 |
|
|
DBWriter dbw = new DBWriter(conn, saxparser);
|
| 448 |
|
|
|
| 449 |
|
|
try {
|
| 450 |
|
|
String accNumber = docid[0];
|
| 451 |
|
|
if (accNumber.equals("")) {
|
| 452 |
|
|
accNumber = null;
|
| 453 |
|
|
}
|
| 454 |
|
|
newdocid = dbw.write(xml, doAction, accNumber);
|
| 455 |
|
|
} catch (NullPointerException npe) {
|
| 456 |
|
|
newdocid = dbw.write(xml, doAction, null);
|
| 457 |
203
|
jones
|
}
|
| 458 |
204
|
jones
|
|
| 459 |
|
|
// set content type and other response header fields first
|
| 460 |
|
|
response.setContentType("text/xml");
|
| 461 |
|
|
out.println("<?xml version=\"1.0\"?>");
|
| 462 |
|
|
out.println("<success>");
|
| 463 |
|
|
out.println("<docid>" + newdocid + "</docid>");
|
| 464 |
|
|
out.println("</success>");
|
| 465 |
|
|
|
| 466 |
203
|
jones
|
} catch (NullPointerException npe) {
|
| 467 |
204
|
jones
|
response.setContentType("text/xml");
|
| 468 |
|
|
out.println("<?xml version=\"1.0\"?>");
|
| 469 |
|
|
out.println("<error>");
|
| 470 |
|
|
out.println(npe.getMessage());
|
| 471 |
|
|
out.println("</error>");
|
| 472 |
55
|
jones
|
}
|
| 473 |
204
|
jones
|
} catch (Exception e) {
|
| 474 |
|
|
response.setContentType("text/xml");
|
| 475 |
|
|
out.println("<?xml version=\"1.0\"?>");
|
| 476 |
|
|
out.println("<error>");
|
| 477 |
|
|
out.println(e.getMessage());
|
| 478 |
|
|
if (e instanceof SAXException) {
|
| 479 |
|
|
Exception e2 = ((SAXException)e).getException();
|
| 480 |
|
|
out.println("<error>");
|
| 481 |
|
|
out.println(e2.getMessage());
|
| 482 |
|
|
out.println("</error>");
|
| 483 |
|
|
}
|
| 484 |
|
|
//e.printStackTrace(out);
|
| 485 |
|
|
out.println("</error>");
|
| 486 |
203
|
jones
|
}
|
| 487 |
55
|
jones
|
}
|
| 488 |
203
|
jones
|
|
| 489 |
|
|
/**
|
| 490 |
|
|
* Handle the database delete request and delete an XML document
|
| 491 |
|
|
* from the database connection
|
| 492 |
|
|
*/
|
| 493 |
|
|
private void handleDeleteAction(PrintWriter out, Hashtable params,
|
| 494 |
|
|
HttpServletResponse response) {
|
| 495 |
|
|
|
| 496 |
|
|
String[] docid = (String[])params.get("docid");
|
| 497 |
|
|
|
| 498 |
|
|
// delete the document from the database
|
| 499 |
|
|
try {
|
| 500 |
|
|
DBWriter dbw = new DBWriter(conn, saxparser);
|
| 501 |
|
|
// NOTE -- NEED TO TEST HERE
|
| 502 |
|
|
// FOR EXISTENCE OF PARAM
|
| 503 |
|
|
// BEFORE ACCESSING ARRAY
|
| 504 |
|
|
try {
|
| 505 |
|
|
dbw.delete(docid[0]);
|
| 506 |
204
|
jones
|
response.setContentType("text/xml");
|
| 507 |
|
|
out.println("<?xml version=\"1.0\"?>");
|
| 508 |
|
|
out.println("<success>");
|
| 509 |
203
|
jones
|
out.println("Document deleted.");
|
| 510 |
204
|
jones
|
out.println("</success>");
|
| 511 |
203
|
jones
|
} catch (AccessionNumberException ane) {
|
| 512 |
204
|
jones
|
response.setContentType("text/xml");
|
| 513 |
|
|
out.println("<?xml version=\"1.0\"?>");
|
| 514 |
|
|
out.println("<error>");
|
| 515 |
|
|
out.println("Error deleting document!!!");
|
| 516 |
203
|
jones
|
out.println(ane.getMessage());
|
| 517 |
204
|
jones
|
out.println("</error>");
|
| 518 |
203
|
jones
|
}
|
| 519 |
204
|
jones
|
} catch (Exception e) {
|
| 520 |
|
|
response.setContentType("text/xml");
|
| 521 |
|
|
out.println("<?xml version=\"1.0\"?>");
|
| 522 |
|
|
out.println("<error>");
|
| 523 |
|
|
out.println(e.getMessage());
|
| 524 |
|
|
out.println("</error>");
|
| 525 |
203
|
jones
|
}
|
| 526 |
|
|
}
|
| 527 |
68
|
higgins
|
|
| 528 |
|
|
/**
|
| 529 |
185
|
jones
|
* Handle the validtion request and return the results to the requestor
|
| 530 |
68
|
higgins
|
*/
|
| 531 |
185
|
jones
|
private void handleValidateAction(PrintWriter out, Hashtable params,
|
| 532 |
|
|
HttpServletResponse response) {
|
| 533 |
68
|
higgins
|
|
| 534 |
103
|
jones
|
// Get the document indicated
|
| 535 |
|
|
String valtext = null;
|
| 536 |
|
|
try {
|
| 537 |
|
|
valtext = ((String[])params.get("valtext"))[0];
|
| 538 |
|
|
} catch (Exception nullpe) {
|
| 539 |
68
|
higgins
|
|
| 540 |
162
|
bojilova
|
String docid = null;
|
| 541 |
103
|
jones
|
try {
|
| 542 |
|
|
// Find the document id number
|
| 543 |
185
|
jones
|
docid = ((String[])params.get("docid"))[0];
|
| 544 |
103
|
jones
|
|
| 545 |
|
|
// Get the document indicated fromthe db
|
| 546 |
|
|
valtext = docreader.readXMLDocument(docid);
|
| 547 |
185
|
jones
|
|
| 548 |
103
|
jones
|
} catch (NullPointerException npe) {
|
| 549 |
|
|
response.setContentType("text/html");
|
| 550 |
185
|
jones
|
out.println("Error getting document ID: " + docid );
|
| 551 |
103
|
jones
|
}
|
| 552 |
|
|
}
|
| 553 |
68
|
higgins
|
|
| 554 |
103
|
jones
|
try {
|
| 555 |
185
|
jones
|
DBValidate valobj = new DBValidate(saxparser,xmlcatalogfile);
|
| 556 |
|
|
boolean valid = valobj.validateString(valtext);
|
| 557 |
68
|
higgins
|
|
| 558 |
|
|
// set content type and other response header fields first
|
| 559 |
105
|
jones
|
response.setContentType("text/html");
|
| 560 |
|
|
out.println("<html>");
|
| 561 |
|
|
out.println("<head><link rel=\"stylesheet\" type=\"text/css\" " +
|
| 562 |
|
|
"href=\"/xmltodb/rowcol.css\" /></head>");
|
| 563 |
|
|
out.println("<body class=\"emlbody\">");
|
| 564 |
68
|
higgins
|
|
| 565 |
|
|
if (valid) {
|
| 566 |
|
|
out.println("The input XML is VALID!");
|
| 567 |
103
|
jones
|
} else {
|
| 568 |
105
|
jones
|
out.println("The input XML is NOT VALID<br />\n<pre>\n"
|
| 569 |
185
|
jones
|
+ valobj.returnErrors() + "\n</pre>\n");
|
| 570 |
68
|
higgins
|
}
|
| 571 |
105
|
jones
|
out.println("</body></html>");
|
| 572 |
103
|
jones
|
} catch (NullPointerException npe2) {
|
| 573 |
|
|
// set content type and other response header fields first
|
| 574 |
|
|
response.setContentType("text/html");
|
| 575 |
|
|
out.println("Error validating document.");
|
| 576 |
68
|
higgins
|
}
|
| 577 |
103
|
jones
|
}
|
| 578 |
87
|
jones
|
|
| 579 |
|
|
/**
|
| 580 |
91
|
higgins
|
* Handle the document request and return the results
|
| 581 |
154
|
jones
|
* to the requestor
|
| 582 |
91
|
higgins
|
*/
|
| 583 |
185
|
jones
|
private void handleGetDataDocumentAction(PrintWriter out, Hashtable params,
|
| 584 |
|
|
HttpServletResponse response) {
|
| 585 |
91
|
higgins
|
boolean error_flag = false;
|
| 586 |
|
|
String error_message = "";
|
| 587 |
|
|
// Get the document indicated
|
| 588 |
|
|
String[] datadoc = (String[])params.get("datadoc");
|
| 589 |
185
|
jones
|
// defaultdatapath = "C:\\Temp\\"; // for testing only!!!
|
| 590 |
|
|
// executescript = "test.bat"; // for testing only!!!
|
| 591 |
91
|
higgins
|
|
| 592 |
|
|
// set content type and other response header fields first
|
| 593 |
|
|
response.setContentType("application/octet-stream");
|
| 594 |
185
|
jones
|
if (defaultdatapath!=null) {
|
| 595 |
|
|
if(!defaultdatapath.endsWith(System.getProperty("file.separator"))) {
|
| 596 |
|
|
defaultdatapath=defaultdatapath+System.getProperty("file.separator");
|
| 597 |
91
|
higgins
|
}
|
| 598 |
185
|
jones
|
System.out.println("Path= "+defaultdatapath+datadoc[0]);
|
| 599 |
|
|
if (executescript!=null) {
|
| 600 |
|
|
String command = null;
|
| 601 |
|
|
File scriptfile = new File(executescript);
|
| 602 |
|
|
if (scriptfile.exists()) {
|
| 603 |
|
|
command=executescript+" "+datadoc[0]; // script includes path
|
| 604 |
|
|
} else { // look in defaultdatapath
|
| 605 |
|
|
// on Win98 one MUST include the .bat extender
|
| 606 |
|
|
command = defaultdatapath+executescript+" "+datadoc[0];
|
| 607 |
|
|
}
|
| 608 |
91
|
higgins
|
System.out.println(command);
|
| 609 |
|
|
try {
|
| 610 |
|
|
Process proc = Runtime.getRuntime().exec(command);
|
| 611 |
|
|
proc.waitFor();
|
| 612 |
|
|
}
|
| 613 |
|
|
catch (Exception eee) {
|
| 614 |
|
|
System.out.println("Error running process!");
|
| 615 |
|
|
error_flag = true;
|
| 616 |
|
|
error_message = "Error running process!";}
|
| 617 |
|
|
} // end executescript not null if
|
| 618 |
|
|
File datafile = new File(defaultdatapath+datadoc[0]);
|
| 619 |
|
|
try {
|
| 620 |
|
|
FileInputStream fw = new FileInputStream(datafile);
|
| 621 |
|
|
int x;
|
| 622 |
185
|
jones
|
while ((x = fw.read())!=-1) {
|
| 623 |
91
|
higgins
|
out.write(x); }
|
| 624 |
185
|
jones
|
fw.close();
|
| 625 |
|
|
} catch (Exception e) {
|
| 626 |
91
|
higgins
|
System.out.println("Error in returning file\n"+e.getMessage());
|
| 627 |
|
|
error_flag=true;
|
| 628 |
185
|
jones
|
error_message = error_message+"\nError in returning file\n"+
|
| 629 |
|
|
e.getMessage();
|
| 630 |
|
|
}
|
| 631 |
|
|
} // end defaultdatapath not null if
|
| 632 |
91
|
higgins
|
}
|
| 633 |
46
|
jones
|
}
|
| 634 |
203
|
jones
|
|
| 635 |
|
|
/**
|
| 636 |
|
|
* '$Log$
|
| 637 |
210
|
bojilova
|
* 'Revision 1.33 2000/06/27 04:50:33 jones
|
| 638 |
|
|
* 'Updated javadoc documentation.
|
| 639 |
|
|
* '
|
| 640 |
205
|
jones
|
* 'Revision 1.32 2000/06/27 04:31:07 jones
|
| 641 |
|
|
* 'Fixed bugs associated with the new UPDATE and DELETE functions of
|
| 642 |
|
|
* 'DBWriter. There were problematic interactions between some static
|
| 643 |
|
|
* 'variables used in DBEntityResolver and the way in which the
|
| 644 |
|
|
* 'Servlet objects are re-used across multiple client invocations.
|
| 645 |
|
|
* '
|
| 646 |
|
|
* 'Generally cleaned up error reporting. Now all errors and success
|
| 647 |
|
|
* 'results are reported as XML documents from MetaCatServlet. Need
|
| 648 |
|
|
* 'to make the command line tools do the same.
|
| 649 |
|
|
* '
|
| 650 |
204
|
jones
|
* 'Revision 1.31 2000/06/26 10:35:05 jones
|
| 651 |
|
|
* 'Merged in substantial changes to DBWriter and associated classes and to
|
| 652 |
|
|
* 'the MetaCatServlet in order to accomodate the new UPDATE and DELETE
|
| 653 |
|
|
* 'functions. The command line tools and the parameters for the
|
| 654 |
|
|
* 'servlet have changed substantially.
|
| 655 |
|
|
* '
|
| 656 |
203
|
jones
|
* 'Revision 1.30.2.6 2000/06/26 10:18:06 jones
|
| 657 |
|
|
* 'Partial fix for MetaCatServlet INSERT?UPDATE bug. Only will work on
|
| 658 |
|
|
* 'the first call to the servlet. Subsequent calls fail. Seems to be
|
| 659 |
|
|
* 'related to exception handling. Multiple successive DELETE actions
|
| 660 |
|
|
* 'work fine.
|
| 661 |
|
|
* '
|
| 662 |
|
|
* 'Revision 1.30.2.5 2000/06/26 09:09:53 jones
|
| 663 |
|
|
* 'Modified MetaCatServlet and associated files to handle the UPDATE
|
| 664 |
|
|
* 'and DELETE actions for DBWriter.
|
| 665 |
|
|
* '
|
| 666 |
|
|
* 'Revision 1.30.2.4 2000/06/26 00:51:06 jones
|
| 667 |
|
|
* 'If docid passed to DBWriter.write() is not unique, classes now generate
|
| 668 |
|
|
* 'an AccessionNumberException containing the new docid generated as a
|
| 669 |
|
|
* 'replacement. The docid is then extracted from the exception and
|
| 670 |
|
|
* 'returned to the calling application for user feedback or client processing.
|
| 671 |
|
|
* '
|
| 672 |
|
|
* 'Revision 1.30.2.3 2000/06/25 23:38:17 jones
|
| 673 |
|
|
* 'Added RCSfile keyword
|
| 674 |
|
|
* '
|
| 675 |
|
|
* 'Revision 1.30.2.2 2000/06/25 23:34:18 jones
|
| 676 |
|
|
* 'Changed documentation formatting, added log entries at bottom of source files
|
| 677 |
|
|
* ''
|
| 678 |
|
|
*/
|