Revision 203
Added by Matt Jones almost 24 years ago
| MetaCatServlet.java | ||
|---|---|---|
| 1 | 1 |
/** |
| 2 |
* Name: MetaCatServlet.java
|
|
| 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 |
|
| 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 | 7 |
* |
| 8 |
* Version: '$Id$' |
|
| 8 |
* '$Author$' |
|
| 9 |
* '$Date$' |
|
| 10 |
* '$Revision$' |
|
| 9 | 11 |
*/ |
| 10 | 12 |
|
| 11 | 13 |
package edu.ucsb.nceas.metacat; |
| ... | ... | |
| 215 | 217 |
} catch (SQLException se) {
|
| 216 | 218 |
out.println(se.getMessage()); |
| 217 | 219 |
} |
| 218 |
} else if (action.equals("putdocument")) {
|
|
| 219 |
handlePutDocumentAction(out, params, response); |
|
| 220 |
} else if (action.equals("insert") || action.equals("update")) {
|
|
| 221 |
handleInsertOrUpdateAction(out, params, response); |
|
| 222 |
} else if (action.equals("delete")) {
|
|
| 223 |
handleDeleteAction(out, params, response); |
|
| 220 | 224 |
} else if (action.equals("validate")) {
|
| 221 | 225 |
handleValidateAction(out, params, response); |
| 222 | 226 |
} else if (action.equals("getdatadoc")) {
|
| ... | ... | |
| 356 | 360 |
* Handle the database putdocument request and write an XML document |
| 357 | 361 |
* to the database connection |
| 358 | 362 |
*/ |
| 359 |
private void handlePutDocumentAction(PrintWriter out, Hashtable params,
|
|
| 363 |
private void handleInsertOrUpdateAction(PrintWriter out, Hashtable params,
|
|
| 360 | 364 |
HttpServletResponse response) {
|
| 361 | 365 |
|
| 362 |
// Get the document indicated
|
|
| 363 |
String[] doctext = (String[])params.get("doctext");
|
|
| 364 |
StringReader xml = new StringReader(doctext[0]);
|
|
| 366 |
// Get the document indicated |
|
| 367 |
String[] doctext = (String[])params.get("doctext");
|
|
| 368 |
StringReader xml = new StringReader(doctext[0]); |
|
| 365 | 369 |
|
| 366 |
// write the document to the database |
|
| 370 |
String[] action = (String[])params.get("action");
|
|
| 371 |
String[] docid = (String[])params.get("docid");
|
|
| 372 |
String newdocid = null; |
|
| 373 |
|
|
| 374 |
String doAction = null; |
|
| 375 |
if (action[0].equals("insert")) {
|
|
| 376 |
doAction = "INSERT"; |
|
| 377 |
} else if (action[0].equals("update")) {
|
|
| 378 |
doAction = "UPDATE"; |
|
| 379 |
} |
|
| 380 |
|
|
| 381 |
// write the document to the database |
|
| 382 |
try {
|
|
| 383 |
DBWriter dbw = new DBWriter(conn, saxparser); |
|
| 384 |
// NOTE -- NEED TO TEST HERE |
|
| 385 |
// FOR EXISTENCE OF PARAM |
|
| 386 |
// BEFORE ACCESSING ARRAY |
|
| 367 | 387 |
try {
|
| 368 |
DBWriter dbw = new DBWriter(xml, conn, saxparser); |
|
| 369 |
} catch (SQLException e1) {
|
|
| 370 |
out.println("Error 1 loading document:<p>\n" + e1.getMessage());
|
|
| 371 |
}catch (IOException e2) {
|
|
| 372 |
out.println("Error 2 loading document:<p>\n" + e2.getMessage());
|
|
| 373 |
}catch (ClassNotFoundException e3) {
|
|
| 374 |
out.println("Error 3 loading document:<p>\n" + e3.getMessage());
|
|
| 388 |
String accNumber = docid[0]; |
|
| 389 |
response.setContentType("text/plain");
|
|
| 390 |
out.println("Accnumber param is: " + accNumber);
|
|
| 391 |
out.println("doAction param is: " + doAction);
|
|
| 392 |
if (accNumber.equals("")) {
|
|
| 393 |
accNumber = null; |
|
| 394 |
out.println("AccNumber now set to null.");
|
|
| 395 |
} |
|
| 396 |
newdocid = dbw.write(xml, doAction, accNumber); |
|
| 397 |
} catch (NullPointerException npe) {
|
|
| 398 |
newdocid = dbw.write(xml, doAction, null); |
|
| 375 | 399 |
} |
| 376 | 400 |
|
| 377 |
// set content type and other response header fields first |
|
| 378 |
response.setContentType("text/xml");
|
|
| 379 |
|
|
| 380 |
out.println(doctext[0]); |
|
| 401 |
} catch (SQLException e1) {
|
|
| 402 |
out.println("Error 1 loading document:\n" + e1.getMessage());
|
|
| 403 |
}catch (IOException e2) {
|
|
| 404 |
out.println("Error 2 loading document:\n" + e2.getMessage());
|
|
| 405 |
}catch (ClassNotFoundException e3) {
|
|
| 406 |
out.println("Error 3 loading document:\n" + e3.getMessage());
|
|
| 407 |
}catch (Exception e4) {
|
|
| 408 |
out.println("Error 4 loading document:\n" + e4.getMessage());
|
|
| 409 |
e4.printStackTrace(out); |
|
| 410 |
} |
|
| 411 |
|
|
| 412 |
// set content type and other response header fields first |
|
| 413 |
//response.setContentType("text/xml");
|
|
| 414 |
out.println("<docid>" + newdocid + "</docid>");
|
|
| 381 | 415 |
} |
| 416 |
|
|
| 417 |
/** |
|
| 418 |
* Handle the database delete request and delete an XML document |
|
| 419 |
* from the database connection |
|
| 420 |
*/ |
|
| 421 |
private void handleDeleteAction(PrintWriter out, Hashtable params, |
|
| 422 |
HttpServletResponse response) {
|
|
| 423 |
|
|
| 424 |
String[] docid = (String[])params.get("docid");
|
|
| 425 |
|
|
| 426 |
// delete the document from the database |
|
| 427 |
try {
|
|
| 428 |
DBWriter dbw = new DBWriter(conn, saxparser); |
|
| 429 |
// NOTE -- NEED TO TEST HERE |
|
| 430 |
// FOR EXISTENCE OF PARAM |
|
| 431 |
// BEFORE ACCESSING ARRAY |
|
| 432 |
try {
|
|
| 433 |
dbw.delete(docid[0]); |
|
| 434 |
response.setContentType("text/html");
|
|
| 435 |
out.println("Document deleted.");
|
|
| 436 |
} catch (AccessionNumberException ane) {
|
|
| 437 |
response.setContentType("text/html");
|
|
| 438 |
out.println("ERROR deleting document!!!<br />");
|
|
| 439 |
out.println(ane.getMessage()); |
|
| 440 |
} |
|
| 441 |
} catch (SQLException e1) {
|
|
| 442 |
out.println("Error 1 loading document:<p>\n" + e1.getMessage());
|
|
| 443 |
}catch (IOException e2) {
|
|
| 444 |
out.println("Error 2 loading document:<p>\n" + e2.getMessage());
|
|
| 445 |
}catch (ClassNotFoundException e3) {
|
|
| 446 |
out.println("Error 3 loading document:<p>\n" + e3.getMessage());
|
|
| 447 |
} |
|
| 448 |
} |
|
| 382 | 449 |
|
| 383 | 450 |
/** |
| 384 | 451 |
* Handle the validtion request and return the results to the requestor |
| ... | ... | |
| 486 | 553 |
} // end defaultdatapath not null if |
| 487 | 554 |
} |
| 488 | 555 |
} |
| 556 |
|
|
| 557 |
/** |
|
| 558 |
* '$Log$ |
|
| 559 |
* 'Revision 1.30.2.6 2000/06/26 10:18:06 jones |
|
| 560 |
* 'Partial fix for MetaCatServlet INSERT?UPDATE bug. Only will work on |
|
| 561 |
* 'the first call to the servlet. Subsequent calls fail. Seems to be |
|
| 562 |
* 'related to exception handling. Multiple successive DELETE actions |
|
| 563 |
* 'work fine. |
|
| 564 |
* ' |
|
| 565 |
* 'Revision 1.30.2.5 2000/06/26 09:09:53 jones |
|
| 566 |
* 'Modified MetaCatServlet and associated files to handle the UPDATE |
|
| 567 |
* 'and DELETE actions for DBWriter. |
|
| 568 |
* ' |
|
| 569 |
* 'Revision 1.30.2.4 2000/06/26 00:51:06 jones |
|
| 570 |
* 'If docid passed to DBWriter.write() is not unique, classes now generate |
|
| 571 |
* 'an AccessionNumberException containing the new docid generated as a |
|
| 572 |
* 'replacement. The docid is then extracted from the exception and |
|
| 573 |
* 'returned to the calling application for user feedback or client processing. |
|
| 574 |
* ' |
|
| 575 |
* 'Revision 1.30.2.3 2000/06/25 23:38:17 jones |
|
| 576 |
* 'Added RCSfile keyword |
|
| 577 |
* ' |
|
| 578 |
* 'Revision 1.30.2.2 2000/06/25 23:34:18 jones |
|
| 579 |
* 'Changed documentation formatting, added log entries at bottom of source files |
|
| 580 |
* '' |
|
| 581 |
*/ |
|
Also available in: Unified diff
Merged in substantial changes to DBWriter and associated classes and to
the MetaCatServlet in order to accomodate the new UPDATE and DELETE
functions. The command line tools and the parameters for the
servlet have changed substantially.