1
|
/**
|
2
|
* '$RCSfile$'
|
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
|
* National Center for Ecological Analysis and Synthesis
|
6
|
* Authors: Matt Jones, Dan Higgins
|
7
|
*
|
8
|
* '$Author: jones $'
|
9
|
* '$Date: 2000-06-26 21:31:07 -0700 (Mon, 26 Jun 2000) $'
|
10
|
* '$Revision: 204 $'
|
11
|
*/
|
12
|
|
13
|
package edu.ucsb.nceas.metacat;
|
14
|
|
15
|
import java.io.PrintWriter;
|
16
|
import java.io.IOException;
|
17
|
import java.io.Reader;
|
18
|
import java.io.StringReader;
|
19
|
import java.io.BufferedReader;
|
20
|
import java.io.File;
|
21
|
import java.io.FileInputStream;
|
22
|
import java.util.Enumeration;
|
23
|
import java.util.Hashtable;
|
24
|
import java.util.ResourceBundle;
|
25
|
import java.util.PropertyResourceBundle;
|
26
|
import java.net.URL;
|
27
|
import java.net.MalformedURLException;
|
28
|
import java.sql.PreparedStatement;
|
29
|
import java.sql.ResultSet;
|
30
|
import java.sql.Connection;
|
31
|
import java.sql.SQLException;
|
32
|
|
33
|
import javax.servlet.ServletConfig;
|
34
|
import javax.servlet.ServletContext;
|
35
|
import javax.servlet.ServletException;
|
36
|
import javax.servlet.ServletInputStream;
|
37
|
import javax.servlet.http.HttpServlet;
|
38
|
import javax.servlet.http.HttpServletRequest;
|
39
|
import javax.servlet.http.HttpServletResponse;
|
40
|
import javax.servlet.http.HttpUtils;
|
41
|
|
42
|
import oracle.xml.parser.v2.XSLStylesheet;
|
43
|
import oracle.xml.parser.v2.XSLException;
|
44
|
import oracle.xml.parser.v2.XMLDocumentFragment;
|
45
|
import oracle.xml.parser.v2.XSLProcessor;
|
46
|
|
47
|
import org.xml.sax.SAXException;
|
48
|
|
49
|
/**
|
50
|
* A metadata catalog server implemented as a Java Servlet
|
51
|
*
|
52
|
* <p>Valid parameters are:<br>
|
53
|
* action=query -- query the values of all elements and attributes
|
54
|
* and return a result set of nodes<br>
|
55
|
* action=squery -- structured query (@see pathquery.dtd)
|
56
|
* doctype -- document type list returned by the query (publicID)
|
57
|
* qformat=xml -- display resultset from query in XML<br>
|
58
|
* qformat=html -- display resultset from query in HTML<br>
|
59
|
* action=getdocument -- display an XML document in XML or HTML<br>
|
60
|
* docid=34 -- display the document with the document ID number 34<br>
|
61
|
* action=putdocument -- load an XML document into the database store<br>
|
62
|
* doctext -- XML text ofthe document to load into the database<br>
|
63
|
* query -- actual query text (to go with 'action=query' or 'action=squery')<br>
|
64
|
* action=validate -- vallidate the xml contained in validatetext<br>
|
65
|
* valtext -- XML text to be validated
|
66
|
* action=getdatadoc -- retreive a stored datadocument
|
67
|
* datadoc -- data document name (id)
|
68
|
*/
|
69
|
public class MetaCatServlet extends HttpServlet {
|
70
|
|
71
|
private ServletConfig config = null;
|
72
|
private ServletContext context = null;
|
73
|
private Connection conn = null;
|
74
|
private DBQuery queryobj = null;
|
75
|
private DBReader docreader = null;
|
76
|
private DBTransform dbt = null;
|
77
|
private String resultStyleURL = null;
|
78
|
private String xmlcatalogfile = null;
|
79
|
private String saxparser = null;
|
80
|
private String defaultdatapath = null;
|
81
|
// path to directory where data files
|
82
|
// that can be downloaded will be stored
|
83
|
private String executescript = null;
|
84
|
// script to get data file and put it
|
85
|
// in defaultdocpath dir
|
86
|
private PropertyResourceBundle options = null;
|
87
|
|
88
|
private MetaCatUtil util = null;
|
89
|
|
90
|
/**
|
91
|
* Initialize the servlet by creating appropriate database connections
|
92
|
*/
|
93
|
public void init( ServletConfig config ) throws ServletException {
|
94
|
try {
|
95
|
super.init( config );
|
96
|
this.config = config;
|
97
|
this.context = config.getServletContext();
|
98
|
System.out.println("MetaCatServlet Initialize");
|
99
|
|
100
|
util = new MetaCatUtil();
|
101
|
|
102
|
// Get the configuration file information
|
103
|
resultStyleURL = util.getOption("resultStyleURL");
|
104
|
xmlcatalogfile = util.getOption("xmlcatalogfile");
|
105
|
saxparser = util.getOption("saxparser");
|
106
|
defaultdatapath = util.getOption("defaultdatapath");
|
107
|
executescript = util.getOption("executescript");
|
108
|
|
109
|
try {
|
110
|
// Open a connection to the database
|
111
|
conn = util.openDBConnection();
|
112
|
|
113
|
queryobj = new DBQuery(conn,saxparser);
|
114
|
docreader = new DBReader(conn);
|
115
|
dbt = new DBTransform(conn);
|
116
|
|
117
|
} catch (Exception e) {
|
118
|
System.err.println("Error opening database connection");
|
119
|
}
|
120
|
} catch ( ServletException ex ) {
|
121
|
throw ex;
|
122
|
}
|
123
|
}
|
124
|
|
125
|
/** Handle "GET" method requests from HTTP clients */
|
126
|
public void doGet (HttpServletRequest request, HttpServletResponse response)
|
127
|
throws ServletException, IOException {
|
128
|
|
129
|
// Process the data and send back the response
|
130
|
handleGetOrPost(request, response);
|
131
|
}
|
132
|
|
133
|
/** Handle "POST" method requests from HTTP clients */
|
134
|
public void doPost( HttpServletRequest request, HttpServletResponse response)
|
135
|
throws ServletException, IOException {
|
136
|
|
137
|
// Process the data and send back the response
|
138
|
handleGetOrPost(request, response);
|
139
|
}
|
140
|
|
141
|
/**
|
142
|
* Control servlet response depending on the action parameter specified
|
143
|
*/
|
144
|
private void handleGetOrPost(HttpServletRequest request,
|
145
|
HttpServletResponse response)
|
146
|
throws ServletException, IOException {
|
147
|
|
148
|
if (conn == null) {
|
149
|
System.err.println("Connection to database lost. Reopening...");
|
150
|
try {
|
151
|
// Open a connection to the database
|
152
|
conn = util.openDBConnection();
|
153
|
|
154
|
queryobj = new DBQuery(conn, saxparser);
|
155
|
docreader = new DBReader(conn);
|
156
|
dbt = new DBTransform(conn);
|
157
|
|
158
|
} catch (Exception e) {
|
159
|
System.err.println("Error opening database connection");
|
160
|
}
|
161
|
}
|
162
|
|
163
|
// Get a handle to the output stream back to the client
|
164
|
PrintWriter out = response.getWriter();
|
165
|
//response.setContentType("text/html");
|
166
|
|
167
|
String name = null;
|
168
|
String[] value = null;
|
169
|
String[] docid = new String[3];
|
170
|
Hashtable params = new Hashtable();
|
171
|
Enumeration paramlist = request.getParameterNames();
|
172
|
while (paramlist.hasMoreElements()) {
|
173
|
name = (String)paramlist.nextElement();
|
174
|
value = request.getParameterValues(name);
|
175
|
|
176
|
// Decode the docid and mouse click information
|
177
|
if (name.endsWith(".y")) {
|
178
|
docid[0] = name.substring(0,name.length()-2);
|
179
|
//out.println("docid => " + docid[0]);
|
180
|
params.put("docid", docid);
|
181
|
name = "ypos";
|
182
|
}
|
183
|
if (name.endsWith(".x")) {
|
184
|
name = "xpos";
|
185
|
}
|
186
|
|
187
|
//out.println(name + " => " + value[0]);
|
188
|
params.put(name,value);
|
189
|
}
|
190
|
|
191
|
// Determine what type of request the user made
|
192
|
// if the action parameter is set, use it as a default
|
193
|
// but if the ypos param is set, calculate the action needed
|
194
|
String action = ((String[])params.get("action"))[0];
|
195
|
long ypos = 0;
|
196
|
try {
|
197
|
ypos = (new Long(((String[])params.get("ypos"))[0]).longValue());
|
198
|
//out.println("<P>YPOS IS " + ypos);
|
199
|
if (ypos <= 13) {
|
200
|
action = "getdocument";
|
201
|
} else if (ypos > 13 && ypos <= 27) {
|
202
|
action = "validate";
|
203
|
} else if (ypos > 27) {
|
204
|
action = "transform";
|
205
|
} else {
|
206
|
action = "";
|
207
|
}
|
208
|
} catch (Exception npe) {
|
209
|
//out.println("<P>Caught exception looking for Y value.");
|
210
|
}
|
211
|
|
212
|
if (action.equals("query") || action.equals("squery")) {
|
213
|
handleQueryAction(out, params, response);
|
214
|
} else if (action.equals("getdocument")) {
|
215
|
try {
|
216
|
handleGetDocumentAction(out, params, response);
|
217
|
} catch (ClassNotFoundException e) {
|
218
|
out.println(e.getMessage());
|
219
|
} catch (SQLException se) {
|
220
|
out.println(se.getMessage());
|
221
|
}
|
222
|
} else if (action.equals("insert") || action.equals("update")) {
|
223
|
handleInsertOrUpdateAction(out, params, response);
|
224
|
} else if (action.equals("delete")) {
|
225
|
handleDeleteAction(out, params, response);
|
226
|
} else if (action.equals("validate")) {
|
227
|
handleValidateAction(out, params, response);
|
228
|
} else if (action.equals("getdatadoc")) {
|
229
|
handleGetDataDocumentAction(out, params, response);
|
230
|
} else {
|
231
|
out.println("Error: action not registered. Please report this error.");
|
232
|
}
|
233
|
|
234
|
// Close the stream to the client
|
235
|
out.close();
|
236
|
}
|
237
|
|
238
|
/**
|
239
|
* Handle the database query request and return a result set, possibly
|
240
|
* transformed from XML into HTML
|
241
|
*/
|
242
|
private void handleQueryAction(PrintWriter out, Hashtable params,
|
243
|
HttpServletResponse response) {
|
244
|
String action = ((String[])params.get("action"))[0];
|
245
|
String query = ((String[])params.get("query"))[0];
|
246
|
Hashtable doclist = null;
|
247
|
String[] doctypeArr = null;
|
248
|
String doctype = null;
|
249
|
Reader xmlquery = null;
|
250
|
|
251
|
// Run the query if it is a structured query
|
252
|
// or, if it is a free-text, simple query,
|
253
|
// format it first as a structured query and then run it
|
254
|
if (action.equals("query")) {
|
255
|
doctypeArr = (String[])params.get("doctype");
|
256
|
doctype = null;
|
257
|
if (doctypeArr != null) {
|
258
|
doctype = ((String[])params.get("doctype"))[0];
|
259
|
}
|
260
|
|
261
|
if (doctype != null) {
|
262
|
xmlquery = new StringReader(DBQuery.createQuery(query,doctype));
|
263
|
} else {
|
264
|
xmlquery = new StringReader(DBQuery.createQuery(query));
|
265
|
}
|
266
|
} else if (action.equals("squery")) {
|
267
|
xmlquery = new StringReader(query);
|
268
|
} else {
|
269
|
System.err.println("Error handling query -- illegal action value");
|
270
|
}
|
271
|
|
272
|
if (queryobj != null) {
|
273
|
doclist = queryobj.findDocuments(xmlquery);
|
274
|
} else {
|
275
|
out.println("Query Object Init failed.");
|
276
|
return;
|
277
|
}
|
278
|
|
279
|
// Create a buffer to hold the xml result
|
280
|
StringBuffer resultset = new StringBuffer();
|
281
|
|
282
|
// Print the resulting root nodes
|
283
|
String docid;
|
284
|
String document = null;
|
285
|
resultset.append("<?xml version=\"1.0\"?>\n");
|
286
|
//resultset.append("<!DOCTYPE resultset PUBLIC " +
|
287
|
// "\"-//NCEAS//resultset//EN\" \"resultset.dtd\">\n");
|
288
|
resultset.append("<resultset>\n");
|
289
|
resultset.append(" <query>" + query + "</query>");
|
290
|
Enumeration doclistkeys = doclist.keys();
|
291
|
while (doclistkeys.hasMoreElements()) {
|
292
|
docid = (String)doclistkeys.nextElement();
|
293
|
document = (String)doclist.get(docid);
|
294
|
resultset.append(" <document>" + document + "</document>");
|
295
|
}
|
296
|
resultset.append("</resultset>");
|
297
|
|
298
|
String qformat = ((String[])params.get("qformat"))[0];
|
299
|
if (qformat.equals("xml")) {
|
300
|
// set content type and other response header fields first
|
301
|
response.setContentType("text/xml");
|
302
|
out.println(resultset.toString());
|
303
|
} else if (qformat.equals("html")) {
|
304
|
// set content type and other response header fields first
|
305
|
response.setContentType("text/html");
|
306
|
//out.println("Converting to HTML...");
|
307
|
XMLDocumentFragment htmldoc = null;
|
308
|
try {
|
309
|
XSLStylesheet style = new XSLStylesheet(
|
310
|
new URL(resultStyleURL), null);
|
311
|
htmldoc = (new XSLProcessor()).processXSL(style,
|
312
|
(Reader)(new StringReader(resultset.toString())),null);
|
313
|
htmldoc.print(out);
|
314
|
} catch (Exception e) {
|
315
|
out.println("Error transforming document:\n" + e.getMessage());
|
316
|
}
|
317
|
}
|
318
|
}
|
319
|
|
320
|
/**
|
321
|
* Handle the database getdocument request and return a XML document,
|
322
|
* possibly transformed from XML into HTML
|
323
|
*/
|
324
|
private void handleGetDocumentAction(PrintWriter out, Hashtable params,
|
325
|
HttpServletResponse response)
|
326
|
throws ClassNotFoundException, IOException, SQLException {
|
327
|
String docidstr = null;
|
328
|
String docid = null;
|
329
|
String doc = null;
|
330
|
try {
|
331
|
// Find the document id number
|
332
|
docidstr = ((String[])params.get("docid"))[0];
|
333
|
//docid = (new Long(docidstr)).longValue();
|
334
|
docid = docidstr;
|
335
|
|
336
|
// Get the document indicated fromthe db
|
337
|
doc = docreader.readXMLDocument(docid);
|
338
|
} catch (NullPointerException npe) {
|
339
|
response.setContentType("text/html");
|
340
|
out.println("Error getting document ID: " + docidstr +" (" + docid + ")");
|
341
|
}
|
342
|
|
343
|
// Return the document in XML or HTML format
|
344
|
String qformat = ((String[])params.get("qformat"))[0];
|
345
|
if (qformat.equals("xml")) {
|
346
|
// set content type and other response header fields first
|
347
|
response.setContentType("text/xml");
|
348
|
out.println(doc);
|
349
|
} else if (qformat.equals("html")) {
|
350
|
// set content type and other response header fields first
|
351
|
response.setContentType("text/html");
|
352
|
|
353
|
// Look up the document type
|
354
|
String sourcetype = docreader.getDoctypeInfo(docid).getDoctype();
|
355
|
|
356
|
// Transform the document to the new doctype
|
357
|
dbt.transformXMLDocument(doc, sourcetype, "-//W3C//HTML//EN", out);
|
358
|
}
|
359
|
}
|
360
|
|
361
|
/**
|
362
|
* Handle the database putdocument request and write an XML document
|
363
|
* to the database connection
|
364
|
*/
|
365
|
private void handleInsertOrUpdateAction(PrintWriter out, Hashtable params,
|
366
|
HttpServletResponse response) {
|
367
|
|
368
|
try {
|
369
|
// Get the document indicated
|
370
|
String[] doctext = (String[])params.get("doctext");
|
371
|
StringReader xml = null;
|
372
|
try {
|
373
|
xml = new StringReader(doctext[0]);
|
374
|
|
375
|
String[] action = (String[])params.get("action");
|
376
|
String[] docid = (String[])params.get("docid");
|
377
|
String newdocid = null;
|
378
|
|
379
|
String doAction = null;
|
380
|
if (action[0].equals("insert")) {
|
381
|
doAction = "INSERT";
|
382
|
} else if (action[0].equals("update")) {
|
383
|
doAction = "UPDATE";
|
384
|
}
|
385
|
|
386
|
// write the document to the database
|
387
|
DBWriter dbw = new DBWriter(conn, saxparser);
|
388
|
|
389
|
try {
|
390
|
String accNumber = docid[0];
|
391
|
if (accNumber.equals("")) {
|
392
|
accNumber = null;
|
393
|
}
|
394
|
newdocid = dbw.write(xml, doAction, accNumber);
|
395
|
} catch (NullPointerException npe) {
|
396
|
newdocid = dbw.write(xml, doAction, null);
|
397
|
}
|
398
|
|
399
|
// set content type and other response header fields first
|
400
|
response.setContentType("text/xml");
|
401
|
out.println("<?xml version=\"1.0\"?>");
|
402
|
out.println("<success>");
|
403
|
out.println("<docid>" + newdocid + "</docid>");
|
404
|
out.println("</success>");
|
405
|
|
406
|
} catch (NullPointerException npe) {
|
407
|
response.setContentType("text/xml");
|
408
|
out.println("<?xml version=\"1.0\"?>");
|
409
|
out.println("<error>");
|
410
|
out.println(npe.getMessage());
|
411
|
out.println("</error>");
|
412
|
}
|
413
|
} catch (Exception e) {
|
414
|
response.setContentType("text/xml");
|
415
|
out.println("<?xml version=\"1.0\"?>");
|
416
|
out.println("<error>");
|
417
|
out.println(e.getMessage());
|
418
|
if (e instanceof SAXException) {
|
419
|
Exception e2 = ((SAXException)e).getException();
|
420
|
out.println("<error>");
|
421
|
out.println(e2.getMessage());
|
422
|
out.println("</error>");
|
423
|
}
|
424
|
//e.printStackTrace(out);
|
425
|
out.println("</error>");
|
426
|
}
|
427
|
}
|
428
|
|
429
|
/**
|
430
|
* Handle the database delete request and delete an XML document
|
431
|
* from the database connection
|
432
|
*/
|
433
|
private void handleDeleteAction(PrintWriter out, Hashtable params,
|
434
|
HttpServletResponse response) {
|
435
|
|
436
|
String[] docid = (String[])params.get("docid");
|
437
|
|
438
|
// delete the document from the database
|
439
|
try {
|
440
|
DBWriter dbw = new DBWriter(conn, saxparser);
|
441
|
// NOTE -- NEED TO TEST HERE
|
442
|
// FOR EXISTENCE OF PARAM
|
443
|
// BEFORE ACCESSING ARRAY
|
444
|
try {
|
445
|
dbw.delete(docid[0]);
|
446
|
response.setContentType("text/xml");
|
447
|
out.println("<?xml version=\"1.0\"?>");
|
448
|
out.println("<success>");
|
449
|
out.println("Document deleted.");
|
450
|
out.println("</success>");
|
451
|
} catch (AccessionNumberException ane) {
|
452
|
response.setContentType("text/xml");
|
453
|
out.println("<?xml version=\"1.0\"?>");
|
454
|
out.println("<error>");
|
455
|
out.println("Error deleting document!!!");
|
456
|
out.println(ane.getMessage());
|
457
|
out.println("</error>");
|
458
|
}
|
459
|
} catch (Exception e) {
|
460
|
response.setContentType("text/xml");
|
461
|
out.println("<?xml version=\"1.0\"?>");
|
462
|
out.println("<error>");
|
463
|
out.println(e.getMessage());
|
464
|
out.println("</error>");
|
465
|
}
|
466
|
}
|
467
|
|
468
|
/**
|
469
|
* Handle the validtion request and return the results to the requestor
|
470
|
*/
|
471
|
private void handleValidateAction(PrintWriter out, Hashtable params,
|
472
|
HttpServletResponse response) {
|
473
|
|
474
|
// Get the document indicated
|
475
|
String valtext = null;
|
476
|
try {
|
477
|
valtext = ((String[])params.get("valtext"))[0];
|
478
|
} catch (Exception nullpe) {
|
479
|
|
480
|
String docid = null;
|
481
|
try {
|
482
|
// Find the document id number
|
483
|
docid = ((String[])params.get("docid"))[0];
|
484
|
|
485
|
// Get the document indicated fromthe db
|
486
|
valtext = docreader.readXMLDocument(docid);
|
487
|
|
488
|
} catch (NullPointerException npe) {
|
489
|
response.setContentType("text/html");
|
490
|
out.println("Error getting document ID: " + docid );
|
491
|
}
|
492
|
}
|
493
|
|
494
|
try {
|
495
|
DBValidate valobj = new DBValidate(saxparser,xmlcatalogfile);
|
496
|
boolean valid = valobj.validateString(valtext);
|
497
|
|
498
|
// set content type and other response header fields first
|
499
|
response.setContentType("text/html");
|
500
|
out.println("<html>");
|
501
|
out.println("<head><link rel=\"stylesheet\" type=\"text/css\" " +
|
502
|
"href=\"/xmltodb/rowcol.css\" /></head>");
|
503
|
out.println("<body class=\"emlbody\">");
|
504
|
|
505
|
if (valid) {
|
506
|
out.println("The input XML is VALID!");
|
507
|
} else {
|
508
|
out.println("The input XML is NOT VALID<br />\n<pre>\n"
|
509
|
+ valobj.returnErrors() + "\n</pre>\n");
|
510
|
}
|
511
|
out.println("</body></html>");
|
512
|
} catch (NullPointerException npe2) {
|
513
|
// set content type and other response header fields first
|
514
|
response.setContentType("text/html");
|
515
|
out.println("Error validating document.");
|
516
|
}
|
517
|
}
|
518
|
|
519
|
/**
|
520
|
* Handle the document request and return the results
|
521
|
* to the requestor
|
522
|
*/
|
523
|
private void handleGetDataDocumentAction(PrintWriter out, Hashtable params,
|
524
|
HttpServletResponse response) {
|
525
|
boolean error_flag = false;
|
526
|
String error_message = "";
|
527
|
// Get the document indicated
|
528
|
String[] datadoc = (String[])params.get("datadoc");
|
529
|
// defaultdatapath = "C:\\Temp\\"; // for testing only!!!
|
530
|
// executescript = "test.bat"; // for testing only!!!
|
531
|
|
532
|
// set content type and other response header fields first
|
533
|
response.setContentType("application/octet-stream");
|
534
|
if (defaultdatapath!=null) {
|
535
|
if(!defaultdatapath.endsWith(System.getProperty("file.separator"))) {
|
536
|
defaultdatapath=defaultdatapath+System.getProperty("file.separator");
|
537
|
}
|
538
|
System.out.println("Path= "+defaultdatapath+datadoc[0]);
|
539
|
if (executescript!=null) {
|
540
|
String command = null;
|
541
|
File scriptfile = new File(executescript);
|
542
|
if (scriptfile.exists()) {
|
543
|
command=executescript+" "+datadoc[0]; // script includes path
|
544
|
} else { // look in defaultdatapath
|
545
|
// on Win98 one MUST include the .bat extender
|
546
|
command = defaultdatapath+executescript+" "+datadoc[0];
|
547
|
}
|
548
|
System.out.println(command);
|
549
|
try {
|
550
|
Process proc = Runtime.getRuntime().exec(command);
|
551
|
proc.waitFor();
|
552
|
}
|
553
|
catch (Exception eee) {
|
554
|
System.out.println("Error running process!");
|
555
|
error_flag = true;
|
556
|
error_message = "Error running process!";}
|
557
|
} // end executescript not null if
|
558
|
File datafile = new File(defaultdatapath+datadoc[0]);
|
559
|
try {
|
560
|
FileInputStream fw = new FileInputStream(datafile);
|
561
|
int x;
|
562
|
while ((x = fw.read())!=-1) {
|
563
|
out.write(x); }
|
564
|
fw.close();
|
565
|
} catch (Exception e) {
|
566
|
System.out.println("Error in returning file\n"+e.getMessage());
|
567
|
error_flag=true;
|
568
|
error_message = error_message+"\nError in returning file\n"+
|
569
|
e.getMessage();
|
570
|
}
|
571
|
} // end defaultdatapath not null if
|
572
|
}
|
573
|
}
|
574
|
|
575
|
/**
|
576
|
* '$Log$
|
577
|
* 'Revision 1.31 2000/06/26 10:35:05 jones
|
578
|
* 'Merged in substantial changes to DBWriter and associated classes and to
|
579
|
* 'the MetaCatServlet in order to accomodate the new UPDATE and DELETE
|
580
|
* 'functions. The command line tools and the parameters for the
|
581
|
* 'servlet have changed substantially.
|
582
|
* '
|
583
|
* 'Revision 1.30.2.6 2000/06/26 10:18:06 jones
|
584
|
* 'Partial fix for MetaCatServlet INSERT?UPDATE bug. Only will work on
|
585
|
* 'the first call to the servlet. Subsequent calls fail. Seems to be
|
586
|
* 'related to exception handling. Multiple successive DELETE actions
|
587
|
* 'work fine.
|
588
|
* '
|
589
|
* 'Revision 1.30.2.5 2000/06/26 09:09:53 jones
|
590
|
* 'Modified MetaCatServlet and associated files to handle the UPDATE
|
591
|
* 'and DELETE actions for DBWriter.
|
592
|
* '
|
593
|
* 'Revision 1.30.2.4 2000/06/26 00:51:06 jones
|
594
|
* 'If docid passed to DBWriter.write() is not unique, classes now generate
|
595
|
* 'an AccessionNumberException containing the new docid generated as a
|
596
|
* 'replacement. The docid is then extracted from the exception and
|
597
|
* 'returned to the calling application for user feedback or client processing.
|
598
|
* '
|
599
|
* 'Revision 1.30.2.3 2000/06/25 23:38:17 jones
|
600
|
* 'Added RCSfile keyword
|
601
|
* '
|
602
|
* 'Revision 1.30.2.2 2000/06/25 23:34:18 jones
|
603
|
* 'Changed documentation formatting, added log entries at bottom of source files
|
604
|
* ''
|
605
|
*/
|