| 1 |
51
|
jones
|
/**
|
| 2 |
203
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jones
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* '$RCSfile$'
|
| 3 |
|
|
* Purpose: A Class that implements a metadata catalog as a java Servlet
|
| 4 |
|
|
* Copyright: 2000 Regents of the University of California and the
|
| 5 |
|
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* National Center for Ecological Analysis and Synthesis
|
| 6 |
361
|
berkley
|
* Authors: Matt Jones, Dan Higgins, Jivka Bojilova, Chad Berkley
|
| 7 |
348
|
jones
|
* Release: @release@
|
| 8 |
154
|
jones
|
*
|
| 9 |
203
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jones
|
* '$Author$'
|
| 10 |
|
|
* '$Date$'
|
| 11 |
|
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* '$Revision$'
|
| 12 |
51
|
jones
|
*/
|
| 13 |
|
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|
| 14 |
|
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package edu.ucsb.nceas.metacat;
|
| 15 |
|
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|
| 16 |
46
|
jones
|
import java.io.PrintWriter;
|
| 17 |
|
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import java.io.IOException;
|
| 18 |
50
|
jones
|
import java.io.Reader;
|
| 19 |
|
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import java.io.StringReader;
|
| 20 |
59
|
jones
|
import java.io.BufferedReader;
|
| 21 |
185
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jones
|
import java.io.File;
|
| 22 |
|
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import java.io.FileInputStream;
|
| 23 |
458
|
berkley
|
import java.io.FileOutputStream;
|
| 24 |
|
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import java.io.InputStreamReader;
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| 25 |
453
|
berkley
|
import java.io.DataInputStream;
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| 26 |
46
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jones
|
import java.util.Enumeration;
|
| 27 |
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import java.util.Hashtable;
|
| 28 |
341
|
berkley
|
import java.util.ResourceBundle;
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| 29 |
82
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jones
|
import java.util.PropertyResourceBundle;
|
| 30 |
50
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jones
|
import java.net.URL;
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| 31 |
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import java.net.MalformedURLException;
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| 32 |
85
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jones
|
import java.sql.PreparedStatement;
|
| 33 |
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import java.sql.ResultSet;
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| 34 |
50
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jones
|
import java.sql.Connection;
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| 35 |
55
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jones
|
import java.sql.SQLException;
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| 36 |
361
|
berkley
|
import java.lang.reflect.*;
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| 37 |
453
|
berkley
|
import java.net.*;
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| 38 |
458
|
berkley
|
import java.util.zip.*;
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| 39 |
46
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jones
|
|
| 40 |
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import javax.servlet.ServletConfig;
|
| 41 |
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import javax.servlet.ServletContext;
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| 42 |
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import javax.servlet.ServletException;
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| 43 |
48
|
jones
|
import javax.servlet.ServletInputStream;
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| 44 |
46
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jones
|
import javax.servlet.http.HttpServlet;
|
| 45 |
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import javax.servlet.http.HttpServletRequest;
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| 46 |
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import javax.servlet.http.HttpServletResponse;
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| 47 |
210
|
bojilova
|
import javax.servlet.http.HttpSession;
|
| 48 |
47
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jones
|
import javax.servlet.http.HttpUtils;
|
| 49 |
458
|
berkley
|
import javax.servlet.ServletOutputStream;
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| 50 |
46
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jones
|
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| 51 |
50
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jones
|
import oracle.xml.parser.v2.XSLStylesheet;
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| 52 |
|
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import oracle.xml.parser.v2.XSLException;
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| 53 |
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import oracle.xml.parser.v2.XMLDocumentFragment;
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| 54 |
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import oracle.xml.parser.v2.XSLProcessor;
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| 55 |
|
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| 56 |
204
|
jones
|
import org.xml.sax.SAXException;
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| 57 |
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|
| 58 |
46
|
jones
|
/**
|
| 59 |
|
|
* A metadata catalog server implemented as a Java Servlet
|
| 60 |
154
|
jones
|
*
|
| 61 |
|
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* <p>Valid parameters are:<br>
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| 62 |
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* action=query -- query the values of all elements and attributes
|
| 63 |
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* and return a result set of nodes<br>
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| 64 |
205
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jones
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* action=squery -- structured query (see pathquery.dtd)<br>
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| 65 |
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* action=insert -- insert an XML document into the database store<br>
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| 66 |
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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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| 68 |
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* action=validate -- vallidate the xml contained in valtext<br>
|
| 69 |
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* action=getdocument -- display an XML document in XML or HTML<br>
|
| 70 |
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* doctype -- document type list returned by the query (publicID)<br>
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154
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jones
|
* qformat=xml -- display resultset from query in XML<br>
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| 72 |
|
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* qformat=html -- display resultset from query in HTML<br>
|
| 73 |
|
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* docid=34 -- display the document with the document ID number 34<br>
|
| 74 |
205
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jones
|
* doctext -- XML text of the document to load into the database<br>
|
| 75 |
183
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jones
|
* query -- actual query text (to go with 'action=query' or 'action=squery')<br>
|
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205
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jones
|
* valtext -- XML text to be validated<br>
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| 77 |
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* action=getdatadoc -- retreive a stored datadocument<br>
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302
|
bojilova
|
* action=getdoctypes -- retreive all doctypes (publicID)<br>
|
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* action=getdataguide -- retreive a Data Guide<br>
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| 80 |
205
|
jones
|
* datadoc -- data document name (id)<br>
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| 81 |
|
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* <p>
|
| 82 |
|
|
* The particular combination of parameters that are valid for each
|
| 83 |
|
|
* particular action value is quite specific. This documentation
|
| 84 |
|
|
* will be reorganized to reflect this information.
|
| 85 |
46
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jones
|
*/
|
| 86 |
|
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public class MetaCatServlet extends HttpServlet {
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| 87 |
|
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|
| 88 |
370
|
berkley
|
private ServletConfig config = null;
|
| 89 |
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private ServletContext context = null;
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| 90 |
|
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private Hashtable connectionPool = new Hashtable();
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| 91 |
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private String resultStyleURL = null;
|
| 92 |
|
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private String xmlcatalogfile = null;
|
| 93 |
|
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private String saxparser = null;
|
| 94 |
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private String defaultdatapath = null;
|
| 95 |
|
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private String servletpath = null;
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| 96 |
380
|
jones
|
private PropertyResourceBundle options = null;
|
| 97 |
|
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private MetaCatUtil util = null;
|
| 98 |
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| 99 |
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// path to directory where data files
|
| 100 |
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// that can be downloaded will be stored
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| 101 |
370
|
berkley
|
private String htmlpath = null;
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| 102 |
380
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jones
|
// script to get data file and put it
|
| 103 |
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// in defaultdocpath dir
|
| 104 |
370
|
berkley
|
private String executescript = null;
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46
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jones
|
|
| 106 |
50
|
jones
|
/**
|
| 107 |
|
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* Initialize the servlet by creating appropriate database connections
|
| 108 |
|
|
*/
|
| 109 |
46
|
jones
|
public void init( ServletConfig config ) throws ServletException {
|
| 110 |
|
|
try {
|
| 111 |
|
|
super.init( config );
|
| 112 |
|
|
this.config = config;
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| 113 |
332
|
bojilova
|
this.context = config.getServletContext();
|
| 114 |
184
|
jones
|
System.out.println("MetaCatServlet Initialize");
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| 115 |
82
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jones
|
|
| 116 |
184
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jones
|
util = new MetaCatUtil();
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| 117 |
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|
|
| 118 |
83
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jones
|
// Get the configuration file information
|
| 119 |
184
|
jones
|
resultStyleURL = util.getOption("resultStyleURL");
|
| 120 |
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xmlcatalogfile = util.getOption("xmlcatalogfile");
|
| 121 |
|
|
saxparser = util.getOption("saxparser");
|
| 122 |
|
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defaultdatapath = util.getOption("defaultdatapath");
|
| 123 |
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executescript = util.getOption("executescript");
|
| 124 |
360
|
bojilova
|
servletpath = util.getOption("servletpath");
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| 125 |
|
|
htmlpath = util.getOption("htmlpath");
|
| 126 |
82
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jones
|
|
| 127 |
46
|
jones
|
try {
|
| 128 |
309
|
bojilova
|
// Open a pool of db connections
|
| 129 |
|
|
connectionPool = util.getConnectionPool();
|
| 130 |
|
|
} catch (Exception e) {
|
| 131 |
|
|
System.err.println("Error creating pool of database connections");
|
| 132 |
|
|
System.err.println(e.getMessage());
|
| 133 |
|
|
}
|
| 134 |
46
|
jones
|
} catch ( ServletException ex ) {
|
| 135 |
|
|
throw ex;
|
| 136 |
|
|
}
|
| 137 |
|
|
}
|
| 138 |
|
|
|
| 139 |
320
|
bojilova
|
/**
|
| 140 |
|
|
* Close all db connections from the pool
|
| 141 |
|
|
*/
|
| 142 |
|
|
public void destroy() {
|
| 143 |
|
|
|
| 144 |
|
|
if (util != null) {
|
| 145 |
|
|
util.closeConnections();
|
| 146 |
|
|
}
|
| 147 |
|
|
}
|
| 148 |
|
|
|
| 149 |
50
|
jones
|
/** Handle "GET" method requests from HTTP clients */
|
| 150 |
46
|
jones
|
public void doGet (HttpServletRequest request, HttpServletResponse response)
|
| 151 |
|
|
throws ServletException, IOException {
|
| 152 |
|
|
|
| 153 |
48
|
jones
|
// Process the data and send back the response
|
| 154 |
59
|
jones
|
handleGetOrPost(request, response);
|
| 155 |
48
|
jones
|
}
|
| 156 |
|
|
|
| 157 |
50
|
jones
|
/** Handle "POST" method requests from HTTP clients */
|
| 158 |
48
|
jones
|
public void doPost( HttpServletRequest request, HttpServletResponse response)
|
| 159 |
|
|
throws ServletException, IOException {
|
| 160 |
|
|
|
| 161 |
|
|
// Process the data and send back the response
|
| 162 |
59
|
jones
|
handleGetOrPost(request, response);
|
| 163 |
48
|
jones
|
}
|
| 164 |
|
|
|
| 165 |
49
|
jones
|
/**
|
| 166 |
50
|
jones
|
* Control servlet response depending on the action parameter specified
|
| 167 |
49
|
jones
|
*/
|
| 168 |
382
|
berkley
|
private void handleGetOrPost(HttpServletRequest request,
|
| 169 |
59
|
jones
|
HttpServletResponse response)
|
| 170 |
355
|
berkley
|
throws ServletException, IOException
|
| 171 |
|
|
{
|
| 172 |
48
|
jones
|
|
| 173 |
309
|
bojilova
|
if ( util == null ) {
|
| 174 |
|
|
util = new MetaCatUtil();
|
| 175 |
|
|
}
|
| 176 |
|
|
if ( connectionPool == null ) {
|
| 177 |
|
|
try {
|
| 178 |
|
|
// Open a pool of db connections
|
| 179 |
|
|
connectionPool = util.getConnectionPool();
|
| 180 |
|
|
} catch (Exception e) {
|
| 181 |
|
|
System.err.println("Error creating pool of database connections");
|
| 182 |
|
|
System.err.println(e.getMessage());
|
| 183 |
|
|
}
|
| 184 |
|
|
}
|
| 185 |
49
|
jones
|
// Get a handle to the output stream back to the client
|
| 186 |
458
|
berkley
|
//PrintWriter out = response.getWriter();
|
| 187 |
102
|
jones
|
//response.setContentType("text/html");
|
| 188 |
49
|
jones
|
|
| 189 |
59
|
jones
|
String name = null;
|
| 190 |
|
|
String[] value = null;
|
| 191 |
103
|
jones
|
String[] docid = new String[3];
|
| 192 |
59
|
jones
|
Hashtable params = new Hashtable();
|
| 193 |
|
|
Enumeration paramlist = request.getParameterNames();
|
| 194 |
|
|
while (paramlist.hasMoreElements()) {
|
| 195 |
|
|
name = (String)paramlist.nextElement();
|
| 196 |
|
|
value = request.getParameterValues(name);
|
| 197 |
103
|
jones
|
|
| 198 |
|
|
// Decode the docid and mouse click information
|
| 199 |
|
|
if (name.endsWith(".y")) {
|
| 200 |
|
|
docid[0] = name.substring(0,name.length()-2);
|
| 201 |
|
|
//out.println("docid => " + docid[0]);
|
| 202 |
|
|
params.put("docid", docid);
|
| 203 |
|
|
name = "ypos";
|
| 204 |
|
|
}
|
| 205 |
|
|
if (name.endsWith(".x")) {
|
| 206 |
|
|
name = "xpos";
|
| 207 |
373
|
berkley
|
}
|
| 208 |
103
|
jones
|
|
| 209 |
102
|
jones
|
//out.println(name + " => " + value[0]);
|
| 210 |
373
|
berkley
|
params.put(name,value);
|
| 211 |
|
|
}
|
| 212 |
355
|
berkley
|
|
| 213 |
|
|
//if the user clicked on the input images, decode which image
|
| 214 |
|
|
//was clicked then set the action.
|
| 215 |
|
|
String action = decodeMouseAction(params);
|
| 216 |
|
|
if(action.equals("error"))
|
| 217 |
|
|
{
|
| 218 |
|
|
action = ((String[])params.get("action"))[0];
|
| 219 |
103
|
jones
|
}
|
| 220 |
355
|
berkley
|
|
| 221 |
380
|
jones
|
// This block handles session management for the servlet
|
| 222 |
|
|
// by looking up the current session information for all actions
|
| 223 |
|
|
// other than "Login" and "Logout"
|
| 224 |
210
|
bojilova
|
// handle login action
|
| 225 |
425
|
bojilova
|
String username = null;
|
| 226 |
|
|
String groupname = null;
|
| 227 |
297
|
bojilova
|
if (action.equals("Login") || action.equals("Login Client")) {
|
| 228 |
458
|
berkley
|
handleLoginAction(response.getWriter(), params, request, response);
|
| 229 |
210
|
bojilova
|
// handle logout action
|
| 230 |
345
|
bojilova
|
} else if (action.equals("Logout") || action.equals("Logout Client")) {
|
| 231 |
210
|
bojilova
|
HttpSession sess = request.getSession(false);
|
| 232 |
251
|
bojilova
|
if (sess != null) { sess.invalidate(); }
|
| 233 |
345
|
bojilova
|
if (action.equals("Logout Client")) {
|
| 234 |
458
|
berkley
|
PrintWriter out = response.getWriter();
|
| 235 |
345
|
bojilova
|
out.println("<?xml version=\"1.0\"?>");
|
| 236 |
|
|
out.println("<success>");
|
| 237 |
|
|
out.println("User logout.");
|
| 238 |
|
|
out.println("</success>");
|
| 239 |
|
|
return;
|
| 240 |
|
|
}
|
| 241 |
361
|
berkley
|
|
| 242 |
360
|
bojilova
|
response.sendRedirect(htmlpath + "/index.html");
|
| 243 |
361
|
berkley
|
|
| 244 |
251
|
bojilova
|
// aware of session expiration on every request
|
| 245 |
343
|
jones
|
} else {
|
| 246 |
332
|
bojilova
|
HttpSession sess = request.getSession(true);
|
| 247 |
|
|
if (sess.isNew()) {
|
| 248 |
251
|
bojilova
|
// session expired or has not been stored b/w user requests
|
| 249 |
328
|
bojilova
|
// redirect to default page for query only access
|
| 250 |
441
|
bojilova
|
// response.sendRedirect(htmlpath + "/sexpire.html");
|
| 251 |
|
|
username = "public";
|
| 252 |
425
|
bojilova
|
} else {
|
| 253 |
|
|
username = (String)sess.getAttribute("username");
|
| 254 |
|
|
groupname = (String)sess.getAttribute("groupname");
|
| 255 |
|
|
}
|
| 256 |
210
|
bojilova
|
}
|
| 257 |
219
|
jones
|
|
| 258 |
380
|
jones
|
// Now that we know the session is valid, we can delegate the request
|
| 259 |
|
|
// to a particular action handler
|
| 260 |
361
|
berkley
|
if(action.equals("query"))
|
| 261 |
|
|
{
|
| 262 |
458
|
berkley
|
handleQuery(response.getWriter(), params, response, username, groupname);
|
| 263 |
373
|
berkley
|
}
|
| 264 |
371
|
berkley
|
else if(action.equals("squery"))
|
| 265 |
361
|
berkley
|
{
|
| 266 |
373
|
berkley
|
if(params.containsKey("query"))
|
| 267 |
|
|
{
|
| 268 |
458
|
berkley
|
handleSQuery(response.getWriter(), params, response, username, groupname);
|
| 269 |
373
|
berkley
|
}
|
| 270 |
|
|
else
|
| 271 |
|
|
{
|
| 272 |
458
|
berkley
|
PrintWriter out = response.getWriter();
|
| 273 |
373
|
berkley
|
out.println("Illegal action squery without \"query\" parameter");
|
| 274 |
|
|
}
|
| 275 |
|
|
}
|
| 276 |
361
|
berkley
|
else if (action.equals("getdocument")) {
|
| 277 |
458
|
berkley
|
PrintWriter out = response.getWriter();
|
| 278 |
87
|
jones
|
try {
|
| 279 |
|
|
handleGetDocumentAction(out, params, response);
|
| 280 |
|
|
} catch (ClassNotFoundException e) {
|
| 281 |
103
|
jones
|
out.println(e.getMessage());
|
| 282 |
87
|
jones
|
} catch (SQLException se) {
|
| 283 |
103
|
jones
|
out.println(se.getMessage());
|
| 284 |
87
|
jones
|
}
|
| 285 |
453
|
berkley
|
}
|
| 286 |
|
|
else if (action.equals("getrelateddocument")) {
|
| 287 |
458
|
berkley
|
PrintWriter out = response.getWriter();
|
| 288 |
453
|
berkley
|
try {
|
| 289 |
|
|
handleGetRelatedDocumentAction(out, params, response);
|
| 290 |
|
|
} catch (ClassNotFoundException e) {
|
| 291 |
|
|
out.println(e.getMessage());
|
| 292 |
|
|
} catch (SQLException se) {
|
| 293 |
|
|
out.println(se.getMessage());
|
| 294 |
|
|
}
|
| 295 |
|
|
}
|
| 296 |
|
|
else if (action.equals("insert") || action.equals("update")) {
|
| 297 |
458
|
berkley
|
PrintWriter out = response.getWriter();
|
| 298 |
425
|
bojilova
|
if ( !username.equals("public") && (username != null) ) {
|
| 299 |
|
|
handleInsertOrUpdateAction(out, params, response, username, groupname);
|
| 300 |
|
|
} else {
|
| 301 |
|
|
out.println("Permission denied for " + action);
|
| 302 |
|
|
}
|
| 303 |
203
|
jones
|
} else if (action.equals("delete")) {
|
| 304 |
458
|
berkley
|
PrintWriter out = response.getWriter();
|
| 305 |
425
|
bojilova
|
if ( !username.equals("public") && (username != null) ) {
|
| 306 |
|
|
handleDeleteAction(out, params, response, username, groupname);
|
| 307 |
|
|
} else {
|
| 308 |
|
|
out.println("Permission denied for " + action);
|
| 309 |
|
|
}
|
| 310 |
68
|
higgins
|
} else if (action.equals("validate")) {
|
| 311 |
458
|
berkley
|
PrintWriter out = response.getWriter();
|
| 312 |
437
|
berkley
|
handleValidateAction(out, params, response);
|
| 313 |
|
|
} else if (action.equals("getabstract")) {
|
| 314 |
458
|
berkley
|
PrintWriter out = response.getWriter();
|
| 315 |
437
|
berkley
|
try{
|
| 316 |
|
|
handleViewAbstractAction(out, params, response);
|
| 317 |
|
|
}
|
| 318 |
|
|
catch(Exception e)
|
| 319 |
|
|
{
|
| 320 |
|
|
out.println("error viewing abstract: " + e.getMessage());
|
| 321 |
|
|
}
|
| 322 |
91
|
higgins
|
} else if (action.equals("getdatadoc")) {
|
| 323 |
458
|
berkley
|
response.setContentType("application/zip");
|
| 324 |
|
|
ServletOutputStream out = response.getOutputStream();
|
| 325 |
91
|
higgins
|
handleGetDataDocumentAction(out, params, response);
|
| 326 |
302
|
bojilova
|
} else if (action.equals("getdoctypes")) {
|
| 327 |
458
|
berkley
|
PrintWriter out = response.getWriter();
|
| 328 |
302
|
bojilova
|
handleGetDoctypesAction(out, params, response);
|
| 329 |
|
|
} else if (action.equals("getdataguide")) {
|
| 330 |
458
|
berkley
|
PrintWriter out = response.getWriter();
|
| 331 |
302
|
bojilova
|
handleGetDataGuideAction(out, params, response);
|
| 332 |
297
|
bojilova
|
} else if (action.equals("Login") || action.equals("Login Client")) {
|
| 333 |
50
|
jones
|
} else {
|
| 334 |
458
|
berkley
|
PrintWriter out = response.getWriter();
|
| 335 |
50
|
jones
|
out.println("Error: action not registered. Please report this error.");
|
| 336 |
46
|
jones
|
}
|
| 337 |
465
|
berkley
|
util.closeConnections();
|
| 338 |
49
|
jones
|
// Close the stream to the client
|
| 339 |
458
|
berkley
|
//out.close();
|
| 340 |
46
|
jones
|
}
|
| 341 |
355
|
berkley
|
|
| 342 |
|
|
/**
|
| 343 |
|
|
* decodes the mouse click information coming from the client.
|
| 344 |
|
|
* This function may be overwritten to provide specific functionality
|
| 345 |
|
|
* for different applications.
|
| 346 |
|
|
* @param params the parameters from the CGI
|
| 347 |
|
|
* @return action the action to be performed or "error" if an error was
|
| 348 |
|
|
* generated
|
| 349 |
|
|
*/
|
| 350 |
375
|
berkley
|
protected String decodeMouseAction(Hashtable params)
|
| 351 |
355
|
berkley
|
{
|
| 352 |
|
|
// Determine what type of request the user made
|
| 353 |
|
|
// if the action parameter is set, use it as a default
|
| 354 |
|
|
// but if the ypos param is set, calculate the action needed
|
| 355 |
|
|
String action=null;
|
| 356 |
|
|
long ypos = 0;
|
| 357 |
|
|
try {
|
| 358 |
|
|
ypos = (new Long(((String[])params.get("ypos"))[0]).longValue());
|
| 359 |
|
|
//out.println("<P>YPOS IS " + ypos);
|
| 360 |
|
|
if (ypos <= 13) {
|
| 361 |
|
|
action = "getdocument";
|
| 362 |
|
|
} else if (ypos > 13 && ypos <= 27) {
|
| 363 |
|
|
action = "validate";
|
| 364 |
|
|
} else if (ypos > 27) {
|
| 365 |
|
|
action = "transform";
|
| 366 |
|
|
}
|
| 367 |
|
|
return action;
|
| 368 |
|
|
} catch (Exception npe) {
|
| 369 |
380
|
jones
|
//
|
| 370 |
|
|
// MBJ -- NOTE that this should be handled more gracefully with
|
| 371 |
|
|
// the new exception infrastructure -- this "error" return
|
| 372 |
|
|
// value is inappropriate
|
| 373 |
355
|
berkley
|
//out.println("<P>Caught exception looking for Y value.");
|
| 374 |
|
|
return "error";
|
| 375 |
382
|
berkley
|
}
|
| 376 |
355
|
berkley
|
}
|
| 377 |
49
|
jones
|
|
| 378 |
50
|
jones
|
/**
|
| 379 |
210
|
bojilova
|
* Handle the Login request. Create a new session object.
|
| 380 |
|
|
* Make a user authentication through SRB RMI Connection.
|
| 381 |
|
|
*/
|
| 382 |
|
|
private void handleLoginAction(PrintWriter out, Hashtable params,
|
| 383 |
|
|
HttpServletRequest request, HttpServletResponse response) {
|
| 384 |
251
|
bojilova
|
|
| 385 |
297
|
bojilova
|
MetaCatSession sess = null;
|
| 386 |
228
|
bojilova
|
String un = ((String[])params.get("username"))[0];
|
| 387 |
|
|
String pw = ((String[])params.get("password"))[0];
|
| 388 |
297
|
bojilova
|
String action = ((String[])params.get("action"))[0];
|
| 389 |
332
|
bojilova
|
|
| 390 |
297
|
bojilova
|
try {
|
| 391 |
|
|
sess = new MetaCatSession(request, un, pw);
|
| 392 |
|
|
} catch (Exception e) {
|
| 393 |
|
|
out.println(e.getMessage());
|
| 394 |
|
|
}
|
| 395 |
411
|
bojilova
|
|
| 396 |
|
|
String output = null;
|
| 397 |
|
|
output = sess.userLogin(response, un, pw, action, htmlpath);
|
| 398 |
|
|
out.println(output);
|
| 399 |
297
|
bojilova
|
|
| 400 |
370
|
berkley
|
}
|
| 401 |
|
|
|
| 402 |
373
|
berkley
|
/**
|
| 403 |
380
|
jones
|
* Retreive the squery xml, execute it and display it
|
| 404 |
|
|
*
|
| 405 |
|
|
* @param out the output stream to the client
|
| 406 |
|
|
* @param params the Hashtable of parameters that should be included
|
| 407 |
|
|
* in the squery.
|
| 408 |
|
|
* @param response the response object linked to the client
|
| 409 |
|
|
* @param conn the database connection
|
| 410 |
|
|
*/
|
| 411 |
|
|
protected void handleSQuery(PrintWriter out, Hashtable params,
|
| 412 |
441
|
bojilova
|
HttpServletResponse response, String user, String group)
|
| 413 |
373
|
berkley
|
{
|
| 414 |
380
|
jones
|
String xmlquery = ((String[])params.get("query"))[0];
|
| 415 |
|
|
String qformat = ((String[])params.get("qformat"))[0];
|
| 416 |
465
|
berkley
|
String resultdoc = null;
|
| 417 |
|
|
String[] returndoc = null;
|
| 418 |
|
|
if(params.contains("returndoc"))
|
| 419 |
|
|
{
|
| 420 |
|
|
returndoc = (String[])params.get("returndoc");
|
| 421 |
|
|
}
|
| 422 |
|
|
|
| 423 |
|
|
Hashtable doclist = runQuery(xmlquery, user, group, returndoc);
|
| 424 |
|
|
//String resultdoc = createResultDocument(doclist, transformQuery(xmlquery));
|
| 425 |
444
|
berkley
|
|
| 426 |
465
|
berkley
|
resultdoc = createResultDocument(doclist, transformQuery(xmlquery));
|
| 427 |
|
|
|
| 428 |
380
|
jones
|
//format and transform the results
|
| 429 |
|
|
if(qformat.equals("html")) {
|
| 430 |
|
|
transformResultset(resultdoc, response, out);
|
| 431 |
|
|
} else if(qformat.equals("xml")) {
|
| 432 |
|
|
response.setContentType("text/xml");
|
| 433 |
|
|
out.println(resultdoc);
|
| 434 |
|
|
} else {
|
| 435 |
|
|
out.println("invalid qformat: " + qformat);
|
| 436 |
|
|
}
|
| 437 |
341
|
berkley
|
}
|
| 438 |
|
|
|
| 439 |
|
|
/**
|
| 440 |
380
|
jones
|
* Create the xml query, execute it and display the results.
|
| 441 |
|
|
*
|
| 442 |
|
|
* @param out the output stream to the client
|
| 443 |
|
|
* @param params the Hashtable of parameters that should be included
|
| 444 |
370
|
berkley
|
* in the squery.
|
| 445 |
380
|
jones
|
* @param response the response object linked to the client
|
| 446 |
370
|
berkley
|
*/
|
| 447 |
375
|
berkley
|
protected void handleQuery(PrintWriter out, Hashtable params,
|
| 448 |
441
|
bojilova
|
HttpServletResponse response, String user, String group)
|
| 449 |
341
|
berkley
|
{
|
| 450 |
370
|
berkley
|
//create the query and run it
|
| 451 |
465
|
berkley
|
String[] returndoc = null;
|
| 452 |
|
|
if(params.containsKey("returndoc"))
|
| 453 |
|
|
{
|
| 454 |
|
|
returndoc = (String[])params.get("returndoc");
|
| 455 |
|
|
}
|
| 456 |
373
|
berkley
|
String xmlquery = DBQuery.createSQuery(params);
|
| 457 |
465
|
berkley
|
Hashtable doclist = runQuery(xmlquery, user, group, returndoc);
|
| 458 |
|
|
String qformat = ((String[])params.get("qformat"))[0];
|
| 459 |
|
|
String resultdoc = null;
|
| 460 |
|
|
|
| 461 |
|
|
resultdoc = createResultDocument(doclist, transformQuery(params));
|
| 462 |
425
|
bojilova
|
|
| 463 |
370
|
berkley
|
//format and transform the results
|
| 464 |
380
|
jones
|
if(qformat.equals("html")) {
|
| 465 |
370
|
berkley
|
transformResultset(resultdoc, response, out);
|
| 466 |
380
|
jones
|
} else if(qformat.equals("xml")) {
|
| 467 |
370
|
berkley
|
response.setContentType("text/xml");
|
| 468 |
|
|
out.println(resultdoc);
|
| 469 |
443
|
berkley
|
} else {
|
| 470 |
370
|
berkley
|
out.println("invalid qformat: " + qformat);
|
| 471 |
|
|
}
|
| 472 |
341
|
berkley
|
}
|
| 473 |
|
|
|
| 474 |
|
|
/**
|
| 475 |
384
|
berkley
|
* Removes the <?xml version="x"?> tag from the beginning of xmlquery
|
| 476 |
|
|
* so it can properly be placed in the <query> tag of the resultset.
|
| 477 |
|
|
* This method is overwritable so that other applications can customize
|
| 478 |
|
|
* the structure of what is in the <query> tag.
|
| 479 |
|
|
*
|
| 480 |
|
|
* @param xmlquery is the query to remove the <?xml version="x"?> tag from.
|
| 481 |
|
|
*/
|
| 482 |
|
|
protected String transformQuery(Hashtable params)
|
| 483 |
|
|
{
|
| 484 |
|
|
//DBQuery.createSQuery is a re-calling of a previously called
|
| 485 |
|
|
//function but it is necessary
|
| 486 |
|
|
//so that overriding methods have access to the params hashtable
|
| 487 |
|
|
String xmlquery = DBQuery.createSQuery(params);
|
| 488 |
|
|
//the <?xml version="1.0"?> tag is the first 22 characters of the
|
| 489 |
|
|
xmlquery = xmlquery.trim();
|
| 490 |
|
|
int index = xmlquery.indexOf("?>");
|
| 491 |
|
|
return xmlquery.substring(index + 2, xmlquery.length());
|
| 492 |
|
|
}
|
| 493 |
|
|
|
| 494 |
|
|
/**
|
| 495 |
443
|
berkley
|
* removes the <?xml version="1.0"?> tag from the beginning. This takes a
|
| 496 |
|
|
* string as a param instead of a hashtable.
|
| 497 |
|
|
*
|
| 498 |
|
|
* @param xmlquery a string representing a query.
|
| 499 |
|
|
*/
|
| 500 |
|
|
protected String transformQuery(String xmlquery)
|
| 501 |
|
|
{
|
| 502 |
|
|
xmlquery = xmlquery.trim();
|
| 503 |
|
|
int index = xmlquery.indexOf("?>");
|
| 504 |
|
|
return xmlquery.substring(index + 2, xmlquery.length());
|
| 505 |
|
|
}
|
| 506 |
|
|
|
| 507 |
|
|
/**
|
| 508 |
380
|
jones
|
* Run the query and return a hashtable of results.
|
| 509 |
|
|
*
|
| 510 |
|
|
* @param xmlquery the query to run
|
| 511 |
|
|
*/
|
| 512 |
465
|
berkley
|
private Hashtable runQuery(String xmlquery, String user, String group,
|
| 513 |
|
|
String[] returndoc)
|
| 514 |
341
|
berkley
|
{
|
| 515 |
|
|
Hashtable doclist=null;
|
| 516 |
|
|
Connection conn = null;
|
| 517 |
|
|
try
|
| 518 |
|
|
{
|
| 519 |
441
|
bojilova
|
conn = util.getConnection();
|
| 520 |
|
|
DBQuery queryobj = new DBQuery(conn, saxparser);
|
| 521 |
465
|
berkley
|
doclist = queryobj.findDocuments(new StringReader(xmlquery),user,group,
|
| 522 |
|
|
returndoc);
|
| 523 |
441
|
bojilova
|
util.returnConnection(conn);
|
| 524 |
|
|
return doclist;
|
| 525 |
341
|
berkley
|
}
|
| 526 |
|
|
catch (Exception e)
|
| 527 |
|
|
{
|
| 528 |
441
|
bojilova
|
util.returnConnection(conn);
|
| 529 |
341
|
berkley
|
util.debugMessage("Error in runQuery: " + e.getMessage());
|
| 530 |
|
|
doclist = null;
|
| 531 |
|
|
return doclist;
|
| 532 |
|
|
}
|
| 533 |
|
|
}
|
| 534 |
|
|
|
| 535 |
380
|
jones
|
/**
|
| 536 |
370
|
berkley
|
* Transorms an xml resultset document to html and sends it to the browser
|
| 537 |
380
|
jones
|
*
|
| 538 |
370
|
berkley
|
* @param resultdoc the string representation of the document that needs
|
| 539 |
|
|
* to be transformed.
|
| 540 |
|
|
* @param response the HttpServletResponse object bound to the client.
|
| 541 |
|
|
* @param out the output stream to the client
|
| 542 |
375
|
berkley
|
*/
|
| 543 |
|
|
protected void transformResultset(String resultdoc,
|
| 544 |
380
|
jones
|
HttpServletResponse response,
|
| 545 |
|
|
PrintWriter out)
|
| 546 |
370
|
berkley
|
{
|
| 547 |
|
|
Connection conn = null;
|
| 548 |
380
|
jones
|
try {
|
| 549 |
370
|
berkley
|
conn = util.getConnection();
|
| 550 |
|
|
DBTransform trans = new DBTransform(conn);
|
| 551 |
|
|
response.setContentType("text/html");
|
| 552 |
|
|
trans.transformXMLDocument(resultdoc, "-//NCEAS//resultset//EN",
|
| 553 |
|
|
"-//W3C//HTML//EN", out);
|
| 554 |
382
|
berkley
|
util.returnConnection(conn);
|
| 555 |
|
|
}
|
| 556 |
|
|
catch(Exception e)
|
| 557 |
|
|
{
|
| 558 |
441
|
bojilova
|
util.returnConnection(conn);
|
| 559 |
370
|
berkley
|
}
|
| 560 |
|
|
}
|
| 561 |
|
|
|
| 562 |
355
|
berkley
|
/**
|
| 563 |
|
|
* Transforms a hashtable of documents to an xml or html result.
|
| 564 |
465
|
berkley
|
* If there is a returndoc, then it only displays documents of
|
| 565 |
|
|
* whatever type returndoc represents. If a result is found in a document
|
| 566 |
|
|
* that is not of type returndoc then this attempts to find a relation
|
| 567 |
|
|
* between this document and one that satifies the returndoc doctype.
|
| 568 |
380
|
jones
|
*
|
| 569 |
355
|
berkley
|
* @param doclist- the hashtable to transform
|
| 570 |
|
|
* @param xmlquery- the query that returned the dolist result
|
| 571 |
465
|
berkley
|
* @param resultdoc- the document type to backtrack to.
|
| 572 |
355
|
berkley
|
*/
|
| 573 |
375
|
berkley
|
protected String createResultDocument(Hashtable doclist, String xmlquery)
|
| 574 |
341
|
berkley
|
{
|
| 575 |
|
|
// Create a buffer to hold the xml result
|
| 576 |
|
|
StringBuffer resultset = new StringBuffer();
|
| 577 |
|
|
|
| 578 |
382
|
berkley
|
// Print the resulting root nodes
|
| 579 |
341
|
berkley
|
String docid = null;
|
| 580 |
|
|
String document = null;
|
| 581 |
|
|
resultset.append("<?xml version=\"1.0\"?>\n");
|
| 582 |
|
|
resultset.append("<resultset>\n");
|
| 583 |
465
|
berkley
|
|
| 584 |
384
|
berkley
|
resultset.append(" <query>" + xmlquery + "</query>");
|
| 585 |
465
|
berkley
|
|
| 586 |
341
|
berkley
|
Enumeration doclistkeys = doclist.keys();
|
| 587 |
|
|
while (doclistkeys.hasMoreElements())
|
| 588 |
|
|
{
|
| 589 |
|
|
docid = (String)doclistkeys.nextElement();
|
| 590 |
|
|
document = (String)doclist.get(docid);
|
| 591 |
|
|
resultset.append(" <document>" + document + "</document>");
|
| 592 |
373
|
berkley
|
}
|
| 593 |
341
|
berkley
|
resultset.append("</resultset>");
|
| 594 |
444
|
berkley
|
//System.out.println(resultset.toString());
|
| 595 |
370
|
berkley
|
return resultset.toString();
|
| 596 |
341
|
berkley
|
}
|
| 597 |
437
|
berkley
|
|
| 598 |
|
|
/**
|
| 599 |
|
|
* Handle the request to view the abstract of a document.
|
| 600 |
444
|
berkley
|
* The abstractpath CGI parameter gives the xml path to the abstract
|
| 601 |
|
|
* node.
|
| 602 |
437
|
berkley
|
*/
|
| 603 |
|
|
private void handleViewAbstractAction(PrintWriter out, Hashtable params,
|
| 604 |
|
|
HttpServletResponse response) throws IOException, SQLException
|
| 605 |
|
|
{
|
| 606 |
|
|
String abstractpath = null;
|
| 607 |
|
|
String docid = null;
|
| 608 |
|
|
Connection conn = null;
|
| 609 |
|
|
response.setContentType("text/html");
|
| 610 |
|
|
try
|
| 611 |
|
|
{
|
| 612 |
|
|
docid = ((String[])params.get("docid"))[0];
|
| 613 |
|
|
if(params.containsKey("abstractpath"))
|
| 614 |
|
|
{
|
| 615 |
444
|
berkley
|
//the CGI parameter abstractpath holds the path to the abstract
|
| 616 |
|
|
//that should be displayed.
|
| 617 |
437
|
berkley
|
abstractpath = ((String[])params.get("abstractpath"))[0];
|
| 618 |
|
|
}
|
| 619 |
|
|
else
|
| 620 |
|
|
{
|
| 621 |
|
|
out.println("error: no abstractpath parameter");
|
| 622 |
|
|
}
|
| 623 |
|
|
conn = util.getConnection();
|
| 624 |
|
|
|
| 625 |
|
|
Object[] abstracts = DBQuery.getNodeContent(abstractpath, docid, conn);
|
| 626 |
|
|
|
| 627 |
444
|
berkley
|
out.println("<html><head><title>Abstract</title></head>");
|
| 628 |
|
|
out.println("<body bgcolor=\"white\"><h1>Abstract</h1>");
|
| 629 |
437
|
berkley
|
for(int i=0; i<abstracts.length; i++)
|
| 630 |
|
|
{
|
| 631 |
|
|
out.println("<p>" + (String)abstracts[i] + "</p>");
|
| 632 |
|
|
}
|
| 633 |
|
|
out.println("</body></html>");
|
| 634 |
|
|
}
|
| 635 |
|
|
catch (IOException ioe)
|
| 636 |
|
|
{
|
| 637 |
444
|
berkley
|
util.debugMessage("error in handlegetabstract: " + ioe.getMessage());
|
| 638 |
437
|
berkley
|
}
|
| 639 |
|
|
catch(SQLException sqle)
|
| 640 |
|
|
{
|
| 641 |
444
|
berkley
|
util.debugMessage("error in handlegetabstract: " + sqle.getMessage());
|
| 642 |
437
|
berkley
|
}
|
| 643 |
|
|
catch(Exception e)
|
| 644 |
|
|
{
|
| 645 |
444
|
berkley
|
util.debugMessage("error in handlegetabstract: " + e.getMessage());
|
| 646 |
437
|
berkley
|
}
|
| 647 |
|
|
|
| 648 |
|
|
util.returnConnection(conn);
|
| 649 |
|
|
}
|
| 650 |
181
|
jones
|
|
| 651 |
50
|
jones
|
/**
|
| 652 |
453
|
berkley
|
* Handle the database getrelateddocument request and return a XML document,
|
| 653 |
|
|
* possibly transformed from XML into HTML
|
| 654 |
|
|
*/
|
| 655 |
|
|
private void handleGetRelatedDocumentAction(PrintWriter out, Hashtable params,
|
| 656 |
|
|
HttpServletResponse response)
|
| 657 |
|
|
throws ClassNotFoundException, IOException, SQLException
|
| 658 |
|
|
{
|
| 659 |
|
|
String docid = null;
|
| 660 |
|
|
Connection conn = null;
|
| 661 |
|
|
|
| 662 |
|
|
if(params.containsKey("url"))
|
| 663 |
|
|
{//the identifier for the related document is contained in the URL param
|
| 664 |
|
|
try
|
| 665 |
|
|
{
|
| 666 |
|
|
DocumentImpl xmldoc=null;
|
| 667 |
|
|
metacatURL murl = new metacatURL(((String[])params.get("url"))[0]);
|
| 668 |
|
|
if(murl.getURLType().equals("metacat"))
|
| 669 |
|
|
{//get the document from the database if it is the right type of url
|
| 670 |
|
|
String[] murlParams = murl.getParam(0);
|
| 671 |
|
|
if(murlParams[0].equals("docid"))
|
| 672 |
|
|
{//the docid should be first
|
| 673 |
465
|
berkley
|
//murl.printParams();
|
| 674 |
453
|
berkley
|
docid = murlParams[1]; //get the docid value
|
| 675 |
|
|
conn = util.getConnection();
|
| 676 |
|
|
xmldoc = new DocumentImpl(conn, docid);
|
| 677 |
|
|
|
| 678 |
|
|
//**************************************************
|
| 679 |
|
|
//the style sheet handling code needs to be put here.
|
| 680 |
|
|
out.println(xmldoc.toString());
|
| 681 |
|
|
//**************************************************
|
| 682 |
|
|
}
|
| 683 |
|
|
else
|
| 684 |
|
|
{
|
| 685 |
|
|
//throw new Exception("handleGetDocument: bad URL");
|
| 686 |
|
|
System.err.println("handleGetDocument: bad URL");
|
| 687 |
|
|
}
|
| 688 |
|
|
}
|
| 689 |
|
|
else if(murl.getURLType().equals("http"))
|
| 690 |
|
|
{//get the document from the internet
|
| 691 |
|
|
String[] murlParams = murl.getParam(0);
|
| 692 |
|
|
if(murlParams[0].equals("httpurl"))
|
| 693 |
|
|
{//httpurl is the param name for an http url.
|
| 694 |
|
|
URL urlconn = new URL(murlParams[1]); //create a new url obj.
|
| 695 |
458
|
berkley
|
//DataInputStream htmldoc = new DataInputStream(urlconn.openStream());
|
| 696 |
|
|
BufferedReader htmldoc = new BufferedReader(
|
| 697 |
|
|
new InputStreamReader(urlconn.openStream()));
|
| 698 |
453
|
berkley
|
//bind a data stream.
|
| 699 |
|
|
try
|
| 700 |
|
|
{ //display the document
|
| 701 |
|
|
String line=null;
|
| 702 |
|
|
while((line = htmldoc.readLine()) != null)
|
| 703 |
|
|
{
|
| 704 |
|
|
out.println(line);
|
| 705 |
|
|
}
|
| 706 |
|
|
}
|
| 707 |
|
|
catch(Exception e)
|
| 708 |
|
|
{
|
| 709 |
|
|
util.debugMessage("error viewing html document");
|
| 710 |
|
|
}
|
| 711 |
|
|
}
|
| 712 |
|
|
}
|
| 713 |
|
|
}
|
| 714 |
|
|
catch (McdbException e) {
|
| 715 |
|
|
response.setContentType("text/xml");
|
| 716 |
|
|
e.toXml(out);
|
| 717 |
|
|
} catch (Throwable t) {
|
| 718 |
|
|
response.setContentType("text/html");
|
| 719 |
|
|
out.println(t.getMessage());
|
| 720 |
|
|
} finally {
|
| 721 |
|
|
util.returnConnection(conn);
|
| 722 |
|
|
}
|
| 723 |
|
|
}
|
| 724 |
|
|
}
|
| 725 |
|
|
|
| 726 |
|
|
/**
|
| 727 |
50
|
jones
|
* Handle the database getdocument request and return a XML document,
|
| 728 |
|
|
* possibly transformed from XML into HTML
|
| 729 |
|
|
*/
|
| 730 |
382
|
berkley
|
private void handleGetDocumentAction(PrintWriter out, Hashtable params,
|
| 731 |
87
|
jones
|
HttpServletResponse response)
|
| 732 |
|
|
throws ClassNotFoundException, IOException, SQLException {
|
| 733 |
102
|
jones
|
String docidstr = null;
|
| 734 |
162
|
bojilova
|
String docid = null;
|
| 735 |
102
|
jones
|
String doc = null;
|
| 736 |
309
|
bojilova
|
Connection conn = null;
|
| 737 |
|
|
|
| 738 |
102
|
jones
|
try {
|
| 739 |
87
|
jones
|
// Find the document id number
|
| 740 |
102
|
jones
|
docidstr = ((String[])params.get("docid"))[0];
|
| 741 |
162
|
bojilova
|
docid = docidstr;
|
| 742 |
309
|
bojilova
|
conn = util.getConnection();
|
| 743 |
393
|
jones
|
DocumentImpl xmldoc = new DocumentImpl(conn, docid);
|
| 744 |
|
|
// Get the document indicated from the db
|
| 745 |
|
|
//doc = docreader.readXMLDocument(docid);
|
| 746 |
85
|
jones
|
|
| 747 |
87
|
jones
|
// Return the document in XML or HTML format
|
| 748 |
437
|
berkley
|
String qformat=null;
|
| 749 |
|
|
if(params.containsKey("qformat"))
|
| 750 |
|
|
{
|
| 751 |
|
|
qformat = ((String[])params.get("qformat"))[0];
|
| 752 |
|
|
}
|
| 753 |
|
|
else
|
| 754 |
|
|
{
|
| 755 |
|
|
qformat = "html";
|
| 756 |
|
|
}
|
| 757 |
|
|
if (qformat.equals("xml")) {
|
| 758 |
85
|
jones
|
// set content type and other response header fields first
|
| 759 |
|
|
response.setContentType("text/xml");
|
| 760 |
431
|
jones
|
xmldoc.toXml(out);
|
| 761 |
|
|
//out.println(xmldoc);
|
| 762 |
85
|
jones
|
} else if (qformat.equals("html")) {
|
| 763 |
437
|
berkley
|
response.setContentType("text/html");
|
| 764 |
87
|
jones
|
// Look up the document type
|
| 765 |
393
|
jones
|
String sourcetype = xmldoc.getDoctype();
|
| 766 |
87
|
jones
|
// Transform the document to the new doctype
|
| 767 |
393
|
jones
|
DBTransform dbt = new DBTransform(conn);
|
| 768 |
|
|
dbt.transformXMLDocument(xmldoc.toString(), sourcetype,
|
| 769 |
|
|
"-//W3C//HTML//EN", out);
|
| 770 |
85
|
jones
|
}
|
| 771 |
343
|
jones
|
} catch (McdbException e) {
|
| 772 |
|
|
response.setContentType("text/xml");
|
| 773 |
|
|
e.toXml(out);
|
| 774 |
|
|
} catch (Throwable t) {
|
| 775 |
309
|
bojilova
|
response.setContentType("text/html");
|
| 776 |
343
|
jones
|
out.println(t.getMessage());
|
| 777 |
309
|
bojilova
|
} finally {
|
| 778 |
320
|
bojilova
|
util.returnConnection(conn);
|
| 779 |
309
|
bojilova
|
}
|
| 780 |
|
|
|
| 781 |
49
|
jones
|
}
|
| 782 |
55
|
jones
|
|
| 783 |
|
|
/**
|
| 784 |
|
|
* Handle the database putdocument request and write an XML document
|
| 785 |
|
|
* to the database connection
|
| 786 |
|
|
*/
|
| 787 |
382
|
berkley
|
private void handleInsertOrUpdateAction(PrintWriter out, Hashtable params,
|
| 788 |
425
|
bojilova
|
HttpServletResponse response, String user, String group) {
|
| 789 |
59
|
jones
|
|
| 790 |
309
|
bojilova
|
Connection conn = null;
|
| 791 |
|
|
|
| 792 |
204
|
jones
|
try {
|
| 793 |
|
|
// Get the document indicated
|
| 794 |
|
|
String[] doctext = (String[])params.get("doctext");
|
| 795 |
|
|
StringReader xml = null;
|
| 796 |
|
|
try {
|
| 797 |
|
|
xml = new StringReader(doctext[0]);
|
| 798 |
59
|
jones
|
|
| 799 |
204
|
jones
|
String[] action = (String[])params.get("action");
|
| 800 |
|
|
String[] docid = (String[])params.get("docid");
|
| 801 |
|
|
String newdocid = null;
|
| 802 |
203
|
jones
|
|
| 803 |
204
|
jones
|
String doAction = null;
|
| 804 |
|
|
if (action[0].equals("insert")) {
|
| 805 |
|
|
doAction = "INSERT";
|
| 806 |
|
|
} else if (action[0].equals("update")) {
|
| 807 |
|
|
doAction = "UPDATE";
|
| 808 |
|
|
}
|
| 809 |
203
|
jones
|
|
| 810 |
204
|
jones
|
try {
|
| 811 |
309
|
bojilova
|
// get a connection from the pool
|
| 812 |
|
|
conn = util.getConnection();
|
| 813 |
408
|
jones
|
|
| 814 |
309
|
bojilova
|
// write the document to the database
|
| 815 |
|
|
try {
|
| 816 |
|
|
String accNumber = docid[0];
|
| 817 |
|
|
if (accNumber.equals("")) {
|
| 818 |
|
|
accNumber = null;
|
| 819 |
|
|
}
|
| 820 |
425
|
bojilova
|
newdocid = DocumentImpl.write(conn, xml, doAction, accNumber,
|
| 821 |
465
|
berkley
|
user, group);
|
| 822 |
|
|
DocumentImpl xmldoc = new DocumentImpl(conn, newdocid);
|
| 823 |
|
|
|
| 824 |
|
|
//if this is a package file then write the package info to
|
| 825 |
|
|
//the xml_relation table. relationHandler checks to see
|
| 826 |
|
|
//if it is a package file so you don't have to do it here.
|
| 827 |
|
|
relationHandler rth = new relationHandler(xmldoc);
|
| 828 |
|
|
|
| 829 |
309
|
bojilova
|
} catch (NullPointerException npe) {
|
| 830 |
425
|
bojilova
|
newdocid = DocumentImpl.write(conn,xml,doAction,null,user,group);
|
| 831 |
309
|
bojilova
|
}
|
| 832 |
462
|
bojilova
|
// } catch (Exception e) {
|
| 833 |
|
|
// response.setContentType("text/html");
|
| 834 |
|
|
// out.println(e.getMessage());
|
| 835 |
309
|
bojilova
|
} finally {
|
| 836 |
320
|
bojilova
|
util.returnConnection(conn);
|
| 837 |
309
|
bojilova
|
}
|
| 838 |
|
|
|
| 839 |
204
|
jones
|
// set content type and other response header fields first
|
| 840 |
|
|
response.setContentType("text/xml");
|
| 841 |
|
|
out.println("<?xml version=\"1.0\"?>");
|
| 842 |
|
|
out.println("<success>");
|
| 843 |
|
|
out.println("<docid>" + newdocid + "</docid>");
|
| 844 |
|
|
out.println("</success>");
|
| 845 |
|
|
|
| 846 |
203
|
jones
|
} catch (NullPointerException npe) {
|
| 847 |
204
|
jones
|
response.setContentType("text/xml");
|
| 848 |
|
|
out.println("<?xml version=\"1.0\"?>");
|
| 849 |
|
|
out.println("<error>");
|
| 850 |
|
|
out.println(npe.getMessage());
|
| 851 |
|
|
out.println("</error>");
|
| 852 |
55
|
jones
|
}
|
| 853 |
204
|
jones
|
} catch (Exception e) {
|
| 854 |
|
|
response.setContentType("text/xml");
|
| 855 |
|
|
out.println("<?xml version=\"1.0\"?>");
|
| 856 |
|
|
out.println("<error>");
|
| 857 |
|
|
out.println(e.getMessage());
|
| 858 |
|
|
if (e instanceof SAXException) {
|
| 859 |
|
|
Exception e2 = ((SAXException)e).getException();
|
| 860 |
|
|
out.println("<error>");
|
| 861 |
|
|
out.println(e2.getMessage());
|
| 862 |
|
|
out.println("</error>");
|
| 863 |
|
|
}
|
| 864 |
|
|
//e.printStackTrace(out);
|
| 865 |
|
|
out.println("</error>");
|
| 866 |
203
|
jones
|
}
|
| 867 |
55
|
jones
|
}
|
| 868 |
203
|
jones
|
|
| 869 |
|
|
/**
|
| 870 |
|
|
* Handle the database delete request and delete an XML document
|
| 871 |
|
|
* from the database connection
|
| 872 |
|
|
*/
|
| 873 |
|
|
private void handleDeleteAction(PrintWriter out, Hashtable params,
|
| 874 |
425
|
bojilova
|
HttpServletResponse response, String user, String group) {
|
| 875 |
203
|
jones
|
|
| 876 |
|
|
String[] docid = (String[])params.get("docid");
|
| 877 |
309
|
bojilova
|
Connection conn = null;
|
| 878 |
203
|
jones
|
|
| 879 |
|
|
// delete the document from the database
|
| 880 |
|
|
try {
|
| 881 |
309
|
bojilova
|
// get a connection from the pool
|
| 882 |
|
|
conn = util.getConnection();
|
| 883 |
203
|
jones
|
// NOTE -- NEED TO TEST HERE
|
| 884 |
408
|
jones
|
// FOR EXISTENCE OF DOCID PARAM
|
| 885 |
203
|
jones
|
// BEFORE ACCESSING ARRAY
|
| 886 |
375
|
berkley
|
try {
|
| 887 |
425
|
bojilova
|
DocumentImpl.delete(conn, docid[0], user, group);
|
| 888 |
204
|
jones
|
response.setContentType("text/xml");
|
| 889 |
|
|
out.println("<?xml version=\"1.0\"?>");
|
| 890 |
|
|
out.println("<success>");
|
| 891 |
203
|
jones
|
out.println("Document deleted.");
|
| 892 |
204
|
jones
|
out.println("</success>");
|
| 893 |
203
|
jones
|
} catch (AccessionNumberException ane) {
|
| 894 |
204
|
jones
|
response.setContentType("text/xml");
|
| 895 |
|
|
out.println("<?xml version=\"1.0\"?>");
|
| 896 |
|
|
out.println("<error>");
|
| 897 |
|
|
out.println("Error deleting document!!!");
|
| 898 |
203
|
jones
|
out.println(ane.getMessage());
|
| 899 |
204
|
jones
|
out.println("</error>");
|
| 900 |
203
|
jones
|
}
|
| 901 |
204
|
jones
|
} catch (Exception e) {
|
| 902 |
|
|
response.setContentType("text/xml");
|
| 903 |
|
|
out.println("<?xml version=\"1.0\"?>");
|
| 904 |
|
|
out.println("<error>");
|
| 905 |
|
|
out.println(e.getMessage());
|
| 906 |
|
|
out.println("</error>");
|
| 907 |
309
|
bojilova
|
} finally {
|
| 908 |
320
|
bojilova
|
util.returnConnection(conn);
|
| 909 |
309
|
bojilova
|
}
|
| 910 |
203
|
jones
|
}
|
| 911 |
68
|
higgins
|
|
| 912 |
|
|
/**
|
| 913 |
380
|
jones
|
* Handle the validation request and return the results to the requestor
|
| 914 |
68
|
higgins
|
*/
|
| 915 |
185
|
jones
|
private void handleValidateAction(PrintWriter out, Hashtable params,
|
| 916 |
|
|
HttpServletResponse response) {
|
| 917 |
68
|
higgins
|
|
| 918 |
103
|
jones
|
// Get the document indicated
|
| 919 |
|
|
String valtext = null;
|
| 920 |
309
|
bojilova
|
|
| 921 |
103
|
jones
|
try {
|
| 922 |
|
|
valtext = ((String[])params.get("valtext"))[0];
|
| 923 |
|
|
} catch (Exception nullpe) {
|
| 924 |
68
|
higgins
|
|
| 925 |
309
|
bojilova
|
Connection conn = null;
|
| 926 |
162
|
bojilova
|
String docid = null;
|
| 927 |
103
|
jones
|
try {
|
| 928 |
|
|
// Find the document id number
|
| 929 |
185
|
jones
|
docid = ((String[])params.get("docid"))[0];
|
| 930 |
309
|
bojilova
|
|
| 931 |
|
|
// get a connection from the pool
|
| 932 |
|
|
conn = util.getConnection();
|
| 933 |
393
|
jones
|
|
| 934 |
309
|
bojilova
|
// Get the document indicated from the db
|
| 935 |
393
|
jones
|
DocumentImpl xmldoc = new DocumentImpl(conn, docid);
|
| 936 |
|
|
valtext = xmldoc.toString();
|
| 937 |
185
|
jones
|
|
| 938 |
103
|
jones
|
} catch (NullPointerException npe) {
|
| 939 |
253
|
jones
|
response.setContentType("text/xml");
|
| 940 |
|
|
out.println("<error>Error getting document ID: " + docid + "</error>");
|
| 941 |
320
|
bojilova
|
if ( conn != null ) { util.returnConnection(conn); }
|
| 942 |
380
|
jones
|
return;
|
| 943 |
309
|
bojilova
|
} catch (Exception e) {
|
| 944 |
|
|
response.setContentType("text/html");
|
| 945 |
|
|
out.println(e.getMessage());
|
| 946 |
|
|
} finally {
|
| 947 |
320
|
bojilova
|
util.returnConnection(conn);
|
| 948 |
309
|
bojilova
|
}
|
| 949 |
103
|
jones
|
}
|
| 950 |
68
|
higgins
|
|
| 951 |
309
|
bojilova
|
Connection conn = null;
|
| 952 |
103
|
jones
|
try {
|
| 953 |
309
|
bojilova
|
// get a connection from the pool
|
| 954 |
|
|
conn = util.getConnection();
|
| 955 |
253
|
jones
|
DBValidate valobj = new DBValidate(saxparser,conn);
|
| 956 |
185
|
jones
|
boolean valid = valobj.validateString(valtext);
|
| 957 |
68
|
higgins
|
|
| 958 |
|
|
// set content type and other response header fields first
|
| 959 |
253
|
jones
|
response.setContentType("text/xml");
|
| 960 |
|
|
out.println(valobj.returnErrors());
|
| 961 |
|
|
|
| 962 |
103
|
jones
|
} catch (NullPointerException npe2) {
|
| 963 |
|
|
// set content type and other response header fields first
|
| 964 |
253
|
jones
|
response.setContentType("text/xml");
|
| 965 |
|
|
out.println("<error>Error validating document.</error>");
|
| 966 |
309
|
bojilova
|
} catch (Exception e) {
|
| 967 |
|
|
response.setContentType("text/html");
|
| 968 |
|
|
out.println(e.getMessage());
|
| 969 |
|
|
} finally {
|
| 970 |
320
|
bojilova
|
util.returnConnection(conn);
|
| 971 |
309
|
bojilova
|
}
|
| 972 |
103
|
jones
|
}
|
| 973 |
87
|
jones
|
|
| 974 |
|
|
/**
|
| 975 |
380
|
jones
|
* Handle the document request and return the results to the requestor
|
| 976 |
458
|
berkley
|
* If a docid is passed in through the params then that document
|
| 977 |
|
|
* will be retrieved form the DB and put in the zip file.
|
| 978 |
|
|
* In addition if 1 or more relations parameters are passed, those file
|
| 979 |
|
|
* will be zipped as well. Currently this is only implemented for
|
| 980 |
|
|
* metacat:// and http:// files. Support should be added for srb:// files
|
| 981 |
|
|
* as well.
|
| 982 |
91
|
higgins
|
*/
|
| 983 |
458
|
berkley
|
private void handleGetDataDocumentAction(ServletOutputStream out,
|
| 984 |
|
|
Hashtable params,
|
| 985 |
185
|
jones
|
HttpServletResponse response) {
|
| 986 |
458
|
berkley
|
//find the related files, get them from their source and zip them into
|
| 987 |
|
|
//a zip file.
|
| 988 |
|
|
try
|
| 989 |
|
|
{
|
| 990 |
|
|
Connection conn = util.getConnection();
|
| 991 |
|
|
String currentDocid = ((String[])params.get("docid"))[0];
|
| 992 |
|
|
ZipOutputStream zout = new ZipOutputStream(out);
|
| 993 |
|
|
byte[] bytestring = null;
|
| 994 |
|
|
ZipEntry zentry = null;
|
| 995 |
|
|
DocumentImpl xmldoc = null;
|
| 996 |
|
|
String[] reldocs = null;
|
| 997 |
|
|
|
| 998 |
|
|
if(params.containsKey("relation"))
|
| 999 |
|
|
{ //get the relations from the parameters.
|
| 1000 |
|
|
reldocs = ((String[])params.get("relation"));
|
| 1001 |
|
|
}
|
| 1002 |
|
|
else
|
| 1003 |
|
|
{ //let the for loop know that there are no relations to zip
|
| 1004 |
|
|
reldocs = new String[0];
|
| 1005 |
|
|
}
|
| 1006 |
|
|
|
| 1007 |
|
|
//write the base file to the zip file.
|
| 1008 |
|
|
xmldoc = new DocumentImpl(conn, currentDocid);
|
| 1009 |
|
|
bytestring = (xmldoc.toString()).getBytes();
|
| 1010 |
|
|
zentry = new ZipEntry(currentDocid + ".xml");
|
| 1011 |
|
|
//create a new zip entry and write the file to the stream
|
| 1012 |
|
|
zentry.setSize(bytestring.length);
|
| 1013 |
|
|
zout.putNextEntry(zentry);
|
| 1014 |
|
|
zout.write(bytestring, 0, bytestring.length);
|
| 1015 |
|
|
zout.closeEntry(); //get ready for the next entry.
|
| 1016 |
|
|
|
| 1017 |
|
|
//zip up the related documents
|
| 1018 |
|
|
for(int i=0; i<reldocs.length; i++)
|
| 1019 |
|
|
{
|
| 1020 |
|
|
metacatURL murl = new metacatURL(((String)reldocs[i]));
|
| 1021 |
|
|
if(murl.getURLType().equals("metacat"))
|
| 1022 |
|
|
{
|
| 1023 |
|
|
//get the document from the database
|
| 1024 |
|
|
xmldoc = new DocumentImpl(conn, (murl.getParam(0))[1]);
|
| 1025 |
|
|
bytestring = (xmldoc.toString()).getBytes();
|
| 1026 |
|
|
zentry = new ZipEntry((murl.getParam(0))[1] + ".xml");
|
| 1027 |
|
|
//create a new zip entry and write the file to the stream
|
| 1028 |
|
|
zentry.setSize(bytestring.length);
|
| 1029 |
|
|
zout.putNextEntry(zentry);
|
| 1030 |
|
|
zout.write(bytestring, 0, bytestring.length);
|
| 1031 |
|
|
zout.closeEntry(); //get ready for the next entry.
|
| 1032 |
|
|
}
|
| 1033 |
|
|
else if(murl.getURLType().equals("http"))
|
| 1034 |
|
|
{
|
| 1035 |
|
|
String[] murlParams = murl.getParam(0);
|
| 1036 |
|
|
if(murlParams[0].equals("httpurl"))
|
| 1037 |
|
|
{//httpurl is the param name for an http url.
|
| 1038 |
|
|
URL urlconn = new URL(murlParams[1]); //create a new url obj.
|
| 1039 |
|
|
BufferedReader htmldoc = new BufferedReader(
|
| 1040 |
|
|
new InputStreamReader(urlconn.openStream()));
|
| 1041 |
|
|
//get the data from the web server
|
| 1042 |
|
|
try
|
| 1043 |
|
|
{ //zip the document
|
| 1044 |
|
|
String line=null;
|
| 1045 |
|
|
zentry = new ZipEntry((murl.getParam(1))[1]);
|
| 1046 |
|
|
//get just the filename from the URL.
|
| 1047 |
|
|
zout.putNextEntry(zentry);
|
| 1048 |
|
|
//make a new entry in the zip file stream
|
| 1049 |
|
|
while((line = htmldoc.readLine()) != null)
|
| 1050 |
|
|
{
|
| 1051 |
|
|
bytestring = (line.toString()).getBytes();
|
| 1052 |
|
|
zout.write(bytestring, 0, bytestring.length);
|
| 1053 |
|
|
//write out the file line by line
|
| 1054 |
|
|
}
|
| 1055 |
|
|
zout.closeEntry(); //close the entry in the file
|
| 1056 |
|
|
}
|
| 1057 |
|
|
catch(Exception e)
|
| 1058 |
|
|
{
|
| 1059 |
|
|
util.debugMessage("error downloading html document");
|
| 1060 |
|
|
}
|
| 1061 |
|
|
}
|
| 1062 |
|
|
}
|
| 1063 |
|
|
}
|
| 1064 |
|
|
zout.finish(); //terminate the zip file
|
| 1065 |
|
|
zout.close(); //close the stream.
|
| 1066 |
|
|
util.returnConnection(conn); //return the connection to the pool
|
| 1067 |
|
|
}
|
| 1068 |
|
|
catch(Exception e)
|
| 1069 |
|
|
{
|
| 1070 |
|
|
System.out.println("Error creating zip file: " + e.getMessage());
|
| 1071 |
|
|
e.printStackTrace(System.out);
|
| 1072 |
|
|
}
|
| 1073 |
|
|
|
| 1074 |
|
|
/*
|
| 1075 |
|
|
//////////old code using a shell script/////////////////////////////////
|
| 1076 |
|
|
|
| 1077 |
91
|
higgins
|
boolean error_flag = false;
|
| 1078 |
|
|
String error_message = "";
|
| 1079 |
|
|
// Get the document indicated
|
| 1080 |
|
|
String[] datadoc = (String[])params.get("datadoc");
|
| 1081 |
185
|
jones
|
// defaultdatapath = "C:\\Temp\\"; // for testing only!!!
|
| 1082 |
|
|
// executescript = "test.bat"; // for testing only!!!
|
| 1083 |
91
|
higgins
|
|
| 1084 |
|
|
// set content type and other response header fields first
|
| 1085 |
|
|
response.setContentType("application/octet-stream");
|
| 1086 |
185
|
jones
|
if (defaultdatapath!=null) {
|
| 1087 |
|
|
if(!defaultdatapath.endsWith(System.getProperty("file.separator"))) {
|
| 1088 |
|
|
defaultdatapath=defaultdatapath+System.getProperty("file.separator");
|
| 1089 |
91
|
higgins
|
}
|
| 1090 |
185
|
jones
|
System.out.println("Path= "+defaultdatapath+datadoc[0]);
|
| 1091 |
|
|
if (executescript!=null) {
|
| 1092 |
|
|
String command = null;
|
| 1093 |
|
|
File scriptfile = new File(executescript);
|
| 1094 |
|
|
if (scriptfile.exists()) {
|
| 1095 |
|
|
command=executescript+" "+datadoc[0]; // script includes path
|
| 1096 |
|
|
} else { // look in defaultdatapath
|
| 1097 |
|
|
// on Win98 one MUST include the .bat extender
|
| 1098 |
|
|
command = defaultdatapath+executescript+" "+datadoc[0];
|
| 1099 |
|
|
}
|
| 1100 |
91
|
higgins
|
System.out.println(command);
|
| 1101 |
|
|
try {
|
| 1102 |
|
|
Process proc = Runtime.getRuntime().exec(command);
|
| 1103 |
|
|
proc.waitFor();
|
| 1104 |
|
|
}
|
| 1105 |
|
|
catch (Exception eee) {
|
| 1106 |
|
|
System.out.println("Error running process!");
|
| 1107 |
|
|
error_flag = true;
|
| 1108 |
|
|
error_message = "Error running process!";}
|
| 1109 |
|
|
} // end executescript not null if
|
| 1110 |
|
|
File datafile = new File(defaultdatapath+datadoc[0]);
|
| 1111 |
|
|
try {
|
| 1112 |
|
|
FileInputStream fw = new FileInputStream(datafile);
|
| 1113 |
|
|
int x;
|
| 1114 |
185
|
jones
|
while ((x = fw.read())!=-1) {
|
| 1115 |
91
|
higgins
|
out.write(x); }
|
| 1116 |
185
|
jones
|
fw.close();
|
| 1117 |
|
|
} catch (Exception e) {
|
| 1118 |
91
|
higgins
|
System.out.println("Error in returning file\n"+e.getMessage());
|
| 1119 |
|
|
error_flag=true;
|
| 1120 |
185
|
jones
|
error_message = error_message+"\nError in returning file\n"+
|
| 1121 |
|
|
e.getMessage();
|
| 1122 |
|
|
}
|
| 1123 |
|
|
} // end defaultdatapath not null if
|
| 1124 |
458
|
berkley
|
*/
|
| 1125 |
91
|
higgins
|
}
|
| 1126 |
302
|
bojilova
|
|
| 1127 |
|
|
/**
|
| 1128 |
|
|
* Handle the getdoctypes Action.
|
| 1129 |
|
|
* Read all doctypes from db connection in XML format
|
| 1130 |
|
|
*/
|
| 1131 |
|
|
private void handleGetDoctypesAction(PrintWriter out, Hashtable params,
|
| 1132 |
|
|
HttpServletResponse response) {
|
| 1133 |
|
|
|
| 1134 |
309
|
bojilova
|
Connection conn = null;
|
| 1135 |
|
|
|
| 1136 |
302
|
bojilova
|
try {
|
| 1137 |
|
|
|
| 1138 |
309
|
bojilova
|
// get connection from the pool
|
| 1139 |
|
|
conn = util.getConnection();
|
| 1140 |
|
|
DBUtil dbutil = new DBUtil(conn);
|
| 1141 |
302
|
bojilova
|
String doctypes = dbutil.readDoctypes();
|
| 1142 |
|
|
out.println(doctypes);
|
| 1143 |
|
|
|
| 1144 |
|
|
} catch (Exception e) {
|
| 1145 |
|
|
out.println("<?xml version=\"1.0\"?>");
|
| 1146 |
|
|
out.println("<error>");
|
| 1147 |
|
|
out.println(e.getMessage());
|
| 1148 |
|
|
out.println("</error>");
|
| 1149 |
309
|
bojilova
|
} finally {
|
| 1150 |
320
|
bojilova
|
util.returnConnection(conn);
|
| 1151 |
309
|
bojilova
|
}
|
| 1152 |
302
|
bojilova
|
|
| 1153 |
|
|
}
|
| 1154 |
|
|
|
| 1155 |
|
|
/**
|
| 1156 |
|
|
* Handle the getdataguide Action.
|
| 1157 |
|
|
* Read Data Guide for a given doctype from db connection in XML format
|
| 1158 |
|
|
*/
|
| 1159 |
|
|
private void handleGetDataGuideAction(PrintWriter out, Hashtable params,
|
| 1160 |
|
|
HttpServletResponse response) {
|
| 1161 |
|
|
|
| 1162 |
309
|
bojilova
|
Connection conn = null;
|
| 1163 |
316
|
bojilova
|
String doctype = null;
|
| 1164 |
|
|
String[] doctypeArr = (String[])params.get("doctype");
|
| 1165 |
309
|
bojilova
|
|
| 1166 |
316
|
bojilova
|
// get only the first doctype specified in the list of doctypes
|
| 1167 |
|
|
// it could be done for all doctypes in that list
|
| 1168 |
|
|
if (doctypeArr != null) {
|
| 1169 |
|
|
doctype = ((String[])params.get("doctype"))[0];
|
| 1170 |
|
|
}
|
| 1171 |
|
|
|
| 1172 |
302
|
bojilova
|
try {
|
| 1173 |
|
|
|
| 1174 |
309
|
bojilova
|
// get connection from the pool
|
| 1175 |
|
|
conn = util.getConnection();
|
| 1176 |
|
|
DBUtil dbutil = new DBUtil(conn);
|
| 1177 |
316
|
bojilova
|
String dataguide = dbutil.readDataGuide(doctype);
|
| 1178 |
302
|
bojilova
|
out.println(dataguide);
|
| 1179 |
|
|
|
| 1180 |
|
|
} catch (Exception e) {
|
| 1181 |
|
|
out.println("<?xml version=\"1.0\"?>");
|
| 1182 |
|
|
out.println("<error>");
|
| 1183 |
|
|
out.println(e.getMessage());
|
| 1184 |
|
|
out.println("</error>");
|
| 1185 |
309
|
bojilova
|
} finally {
|
| 1186 |
320
|
bojilova
|
util.returnConnection(conn);
|
| 1187 |
309
|
bojilova
|
}
|
| 1188 |
302
|
bojilova
|
|
| 1189 |
|
|
}
|
| 1190 |
|
|
|
| 1191 |
46
|
jones
|
}
|