source: gsdl/trunk/perllib/dbutil.pm@ 19619

Last change on this file since 19619 was 18658, checked in by kjdon, 15 years ago

we now use .gdb as gdbm db file extension instead of ldb/bdb
File size: 24.7 KB
Line 
1###########################################################################
2#
3# dbutil.pm -- utility functions for writing to different databases
4# Copyright (C) 2008 DL Consulting Ltd
5#
6# A component of the Greenstone digital library software
7# from the New Zealand Digital Library Project at the
8# University of Waikato, New Zealand.
9#
10# This program is free software; you can redistribute it and/or modify
11# it under the terms of the GNU General Public License as published by
12# the Free Software Foundation; either version 2 of the License, or
13# (at your option) any later version.
14#
15# This program is distributed in the hope that it will be useful,
16# but WITHOUT ANY WARRANTY; without even the implied warranty of
17# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18# GNU General Public License for more details.
19#
20# You should have received a copy of the GNU General Public License
21# along with this program; if not, write to the Free Software
22# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23#
24###########################################################################
25
26package dbutil;
27
28use Encode;
29use strict;
30
31
32sub open_infodb_write_handle
33{
34 my $infodb_type = shift(@_);
35 my $infodb_file_path = shift(@_);
36
37 if ($infodb_type eq "sqlite")
38 {
39 return &open_infodb_write_handle_sqlite($infodb_file_path);
40 }
41 elsif ($infodb_type eq "gdbm-txtgz")
42 {
43 return &open_infodb_write_handle_gdbm_txtgz($infodb_file_path);
44 }
45 elsif ($infodb_type eq "mssql")
46 {
47 return &open_infodb_write_handle_mssql($infodb_file_path);
48 }
49
50 # Use GDBM if the infodb type is empty or not one of the values above
51 return &open_infodb_write_handle_gdbm($infodb_file_path);
52}
53
54
55sub close_infodb_write_handle
56{
57 my $infodb_type = shift(@_);
58 my $infodb_handle = shift(@_);
59
60 if ($infodb_type eq "sqlite")
61 {
62 return &close_infodb_write_handle_sqlite($infodb_handle);
63 }
64 elsif ($infodb_type eq "gdbm-txtgz")
65 {
66 return &close_infodb_write_handle_gdbm_txtgz($infodb_handle);
67 }
68 elsif ($infodb_type eq "mssql")
69 {
70 return &close_infodb_write_handle_mssql($infodb_handle);
71 }
72
73 # Use GDBM if the infodb type is empty or not one of the values above
74 return &close_infodb_write_handle_gdbm($infodb_handle);
75}
76
77
78sub get_default_infodb_type
79{
80 # The default is GDBM so everything works the same for existing collections
81 # To use something else, specify the "infodbtype" in the collection's collect.cfg file
82 return "gdbm";
83}
84
85
86sub get_infodb_file_path
87{
88 my $infodb_type = shift(@_);
89 my $collection_name = shift(@_);
90 my $infodb_directory_path = shift(@_);
91
92 if ($infodb_type eq "sqlite")
93 {
94 return &get_infodb_file_path_sqlite($collection_name, $infodb_directory_path);
95 }
96 elsif ($infodb_type eq "gdbm-txtgz")
97 {
98 return &get_infodb_file_path_gdbm_txtgz($collection_name, $infodb_directory_path);
99 }
100 elsif ($infodb_type eq "mssql")
101 {
102 #==================================================================================================#
103 # Updated by Jeffrey (2008/08/25 Monday)
104 # After look into the run-time code, it seems we should still create a database file.
105 # Since the run-time code is always try to read a database file, the easiest way here is not
106 # to change the whole structure, but to give whatever the system is looking for.
107 #==================================================================================================#
108 # Added by Jeffrey (2008/08/15 Friday)
109 # No file path required for MS SQL, it is a server-client connection.
110 # At the moment the information is hard coded in open_infodb_write_handle_mssql
111 # the this might need some tidy up sometime.
112 #==================================================================================================#
113 return &get_infodb_file_path_mssql($collection_name, $infodb_directory_path);
114 }
115
116 # Use GDBM if the infodb type is empty or not one of the values above
117 return &get_infodb_file_path_gdbm($collection_name, $infodb_directory_path);
118}
119
120
121sub read_infodb_file
122{
123 my $infodb_type = shift(@_);
124 my $infodb_file_path = shift(@_);
125 my $infodb_map = shift(@_);
126
127 if ($infodb_type eq "sqlite")
128 {
129 return &read_infodb_file_sqlite($infodb_file_path, $infodb_map);
130 }
131 elsif ($infodb_type eq "gdbm-txtgz")
132 {
133 return &read_infodb_file_gdbm_txtgz($infodb_file_path, $infodb_map);
134 }
135 elsif ($infodb_type eq "mssql")
136 {
137 return &read_infodb_file_mssql($infodb_file_path, $infodb_map);
138 }
139
140 # Use GDBM if the infodb type is empty or not one of the values above
141 return &read_infodb_file_gdbm($infodb_file_path, $infodb_map);
142}
143
144
145sub write_infodb_entry
146{
147 my $infodb_type = shift(@_);
148 my $infodb_handle = shift(@_);
149 my $infodb_key = shift(@_);
150 my $infodb_map = shift(@_);
151
152 if ($infodb_type eq "sqlite")
153 {
154 return &write_infodb_entry_sqlite($infodb_handle, $infodb_key, $infodb_map);
155 }
156 elsif ($infodb_type eq "gdbm-txtgz")
157 {
158 return &write_infodb_entry_gdbm_txtgz($infodb_handle, $infodb_key, $infodb_map);
159 }
160 elsif ($infodb_type eq "mssql")
161 {
162 return &write_infodb_entry_mssql($infodb_handle, $infodb_key, $infodb_map);
163 }
164
165 # Use GDBM if the infodb type is empty or not one of the values above
166 return &write_infodb_entry_gdbm($infodb_handle, $infodb_key, $infodb_map);
167}
168
169
170sub delete_infodb_entry
171{
172 my $infodb_type = shift(@_);
173 my $infodb_handle = shift(@_);
174 my $infodb_key = shift(@_);
175
176 if ($infodb_type eq "sqlite")
177 {
178 return &delete_infodb_entry_sqlite($infodb_handle, $infodb_key);
179 }
180 elsif ($infodb_type eq "gdbm-txtgz")
181 {
182 return &delete_infodb_entry_gdbm_txtgz($infodb_handle, $infodb_key);
183 }
184 elsif ($infodb_type eq "mssql")
185 {
186 return &delete_infodb_entry_mssql($infodb_handle, $infodb_key);
187 }
188
189 # Use GDBM if the infodb type is empty or not one of the values above
190 return &delete_infodb_entry_gdbm($infodb_handle, $infodb_key);
191}
192
193
194
195# -----------------------------------------------------------------------------
196# GDBM TXT-GZ IMPLEMENTATION
197# -----------------------------------------------------------------------------
198
199sub open_infodb_write_handle_gdbm_txtgz
200{
201 # Keep infodb in GDBM neutral form => save data as compressed text file,
202 # read for txt2db to be run on it later (i.e. by the runtime system,
203 # first time the collection is ever accessed). This makes it easier
204 # distribute pre-built collections to various architectures.
205 #
206 # NB: even if two architectures are little endian (e.g. Intel and
207 # ARM procesors) GDBM does *not* guarantee that the database generated on
208 # one will work on the other
209
210 my $infodb_file_path = shift(@_);
211
212 # Greenstone ships with gzip for windows, on $PATH
213
214 my $infodb_file_handle = undef;
215 if (!open($infodb_file_handle, "| gzip - > \"$infodb_file_path\""))
216 {
217 return undef;
218 }
219
220 return $infodb_file_handle;
221}
222
223
224sub close_infodb_write_handle_gdbm_txtgz
225{
226 my $infodb_handle = shift(@_);
227
228 close($infodb_handle);
229}
230
231
232sub get_infodb_file_path_gdbm_txtgz
233{
234 my $collection_name = shift(@_);
235 my $infodb_directory_path = shift(@_);
236
237 my $infodb_file_name = &util::get_dirsep_tail($collection_name).".txt.gz";
238 return &util::filename_cat($infodb_directory_path, $infodb_file_name);
239}
240
241
242sub read_infodb_file_gdbm_txtgz
243{
244 my $infodb_file_path = shift(@_);
245 my $infodb_map = shift(@_);
246
247 my $cmd = "gzip --decompress \"$infodb_file_path\"";
248
249 open (PIPEIN, "$cmd |")
250 || die "Error: Couldn't open pipe from gzip: $!\n $cmd\n";
251
252 my $infodb_line = "";
253 my $infodb_key = "";
254 my $infodb_value = "";
255 while (defined ($infodb_line = <PIPEIN>))
256 {
257 if ($infodb_line =~ /^\[([^\]]+)\]$/)
258 {
259 $infodb_key = $1;
260 }
261 elsif ($infodb_line =~ /^-{70}$/)
262 {
263 $infodb_map->{$infodb_key} = $infodb_value;
264 $infodb_key = "";
265 $infodb_value = "";
266 }
267 else
268 {
269 $infodb_value .= $infodb_line;
270 }
271 }
272
273 close (PIPEIN);
274}
275
276
277sub write_infodb_entry_gdbm_txtgz
278{
279
280 my $infodb_handle = shift(@_);
281 my $infodb_key = shift(@_);
282 my $infodb_map = shift(@_);
283
284 print $infodb_handle "[$infodb_key]\n";
285 foreach my $infodb_value_key (keys(%$infodb_map))
286 {
287 foreach my $infodb_value (@{$infodb_map->{$infodb_value_key}})
288 {
289 if ($infodb_value =~ /-{70,}/)
290 {
291 # if value contains 70 or more hyphens in a row we need to escape them
292 # to prevent txt2db from treating them as a separator
293 $infodb_value =~ s/-/&\#045;/gi;
294 }
295 print $infodb_handle "<$infodb_value_key>" . $infodb_value . "\n";
296 }
297 }
298 print $infodb_handle '-' x 70, "\n";
299}
300
301
302sub delete_infodb_entry_gdbm_txtgz
303{
304
305 my $infodb_handle = shift(@_);
306 my $infodb_key = shift(@_);
307
308
309 # A minus at the end of a key (after the ]) signifies 'delete'
310 print $infodb_handle "[$infodb_key]-\n";
311
312 # The 70 minus signs are also needed, to help make the parsing by db2txt simple
313 print $infodb_handle '-' x 70, "\n";
314}
315
316
317
318# -----------------------------------------------------------------------------
319# GDBM IMPLEMENTATION
320# -----------------------------------------------------------------------------
321
322sub open_infodb_write_handle_gdbm
323{
324 my $infodb_file_path = shift(@_);
325
326 my $txt2db_exe = &util::filename_cat($ENV{'GSDLHOME'},"bin",$ENV{'GSDLOS'}, "txt2db" . &util::get_os_exe());
327 my $infodb_file_handle = undef;
328 if (!-e "$txt2db_exe" || !open($infodb_file_handle, "| \"$txt2db_exe\" \"$infodb_file_path\""))
329 {
330 return undef;
331 }
332
333 return $infodb_file_handle;
334}
335
336
337sub close_infodb_write_handle_gdbm
338{
339 my $infodb_handle = shift(@_);
340
341 close($infodb_handle);
342}
343
344
345sub get_infodb_file_path_gdbm
346{
347 my $collection_name = shift(@_);
348 my $infodb_directory_path = shift(@_);
349
350 my $infodb_file_extension = ".gdb";
351 my $infodb_file_name = &util::get_dirsep_tail($collection_name) . $infodb_file_extension;
352 return &util::filename_cat($infodb_directory_path, $infodb_file_name);
353}
354
355
356sub read_infodb_file_gdbm
357{
358 my $infodb_file_path = shift(@_);
359 my $infodb_map = shift(@_);
360
361 open (PIPEIN, "db2txt \"$infodb_file_path\" |") || die "couldn't open pipe from db2txt \$infodb_file_path\"\n";
362 my $infodb_line = "";
363 my $infodb_key = "";
364 my $infodb_value = "";
365 while (defined ($infodb_line = <PIPEIN>))
366 {
367 if ($infodb_line =~ /^\[([^\]]+)\]$/)
368 {
369 $infodb_key = $1;
370 }
371 elsif ($infodb_line =~ /^-{70}$/)
372 {
373 $infodb_map->{$infodb_key} = $infodb_value;
374 $infodb_key = "";
375 $infodb_value = "";
376 }
377 else
378 {
379 $infodb_value .= $infodb_line;
380 }
381 }
382
383 close (PIPEIN);
384}
385
386sub read_infodb_keys_gdbm
387{
388 my $infodb_file_path = shift(@_);
389 my $infodb_map = shift(@_);
390
391 open (PIPEIN, "gdbmkeys \"$infodb_file_path\" |") || die "couldn't open pipe from gdbmkeys \$infodb_file_path\"\n";
392 my $infodb_line = "";
393 my $infodb_key = "";
394 my $infodb_value = "";
395 while (defined ($infodb_line = <PIPEIN>))
396 {
397 chomp $infodb_line; # remove end of line
398
399 $infodb_map->{$infodb_line} = 1;
400 }
401
402 close (PIPEIN);
403}
404
405
406sub write_infodb_entry_gdbm
407{
408 # With infodb_handle already set up, works the same as _gdbm_txtgz version
409 write_infodb_entry_gdbm_txtgz(@_);
410}
411
412sub delete_infodb_entry_gdbm
413{
414 # With infodb_handle already set up, works the same as _gdbm_txtgz version
415 delete_infodb_entry_gdbm_txtgz(@_);
416}
417
418
419
420# -----------------------------------------------------------------------------
421# SQLITE IMPLEMENTATION
422# -----------------------------------------------------------------------------
423
424sub open_infodb_write_handle_sqlite
425{
426 my $infodb_file_path = shift(@_);
427
428 my $sqlite3_exe = &util::filename_cat($ENV{'GSDLHOME'},"bin",$ENV{'GSDLOS'}, "sqlite3" . &util::get_os_exe());
429 my $infodb_handle = undef;
430 if (!-e "$sqlite3_exe" || !open($infodb_handle, "| \"$sqlite3_exe\" \"$infodb_file_path\""))
431 {
432 return undef;
433 }
434
435 print $infodb_handle "CREATE TABLE IF NOT EXISTS data (key TEXT PRIMARY KEY, value TEXT);\n";
436 print $infodb_handle "CREATE TABLE IF NOT EXISTS document_metadata (id INTEGER PRIMARY KEY, docOID TEXT, element TEXT, value TEXT);\n";
437
438 # This is crucial for efficiency when importing large amounts of data
439 print $infodb_handle "CREATE INDEX IF NOT EXISTS dmd ON document_metadata(docOID);\n";
440
441 # This is very important for efficiency, otherwise each command will be actioned one at a time
442 print $infodb_handle "BEGIN TRANSACTION;\n";
443
444 return $infodb_handle;
445}
446
447
448sub close_infodb_write_handle_sqlite
449{
450 my $infodb_handle = shift(@_);
451
452 # Close the transaction we began after opening the file
453 print $infodb_handle "END TRANSACTION;\n";
454
455 # This is crucial for efficient queries on the database!
456 print $infodb_handle "CREATE INDEX IF NOT EXISTS dme ON document_metadata(element);\n";
457
458 close($infodb_handle);
459}
460
461
462sub get_infodb_file_path_sqlite
463{
464 my $collection_name = shift(@_);
465 my $infodb_directory_path = shift(@_);
466
467 my $infodb_file_extension = ".db";
468 my $infodb_file_name = &util::get_dirsep_tail($collection_name) . $infodb_file_extension;
469 return &util::filename_cat($infodb_directory_path, $infodb_file_name);
470}
471
472
473sub read_infodb_file_sqlite
474{
475 my $infodb_file_path = shift(@_);
476 my $infodb_map = shift(@_);
477
478 # !! TO IMPLEMENT
479}
480
481
482sub write_infodb_entry_sqlite
483{
484 my $infodb_handle = shift(@_);
485 my $infodb_key = shift(@_);
486 my $infodb_map = shift(@_);
487
488 # Add the key -> value mapping into the "data" table
489 my $infodb_entry_value = "";
490 foreach my $infodb_value_key (keys(%$infodb_map))
491 {
492 foreach my $infodb_value (@{$infodb_map->{$infodb_value_key}})
493 {
494 $infodb_entry_value .= "<$infodb_value_key>" . $infodb_value . "\n";
495 }
496 }
497
498 my $safe_infodb_key = &sqlite_safe($infodb_key);
499 print $infodb_handle "INSERT OR REPLACE INTO data (key, value) VALUES ('" . $safe_infodb_key . "', '" . &sqlite_safe($infodb_entry_value) . "');\n";
500
501 # If this infodb entry is for a document, add all the interesting document metadata to the
502 # "document_metadata" table (for use by the dynamic classifiers)
503 if ($infodb_key !~ /\./ && $infodb_entry_value =~ /\<doctype\>doc\n/)
504 {
505 print $infodb_handle "DELETE FROM document_metadata WHERE docOID='" . $safe_infodb_key . "';\n";
506
507 foreach my $infodb_value_key (keys(%$infodb_map))
508 {
509 # We're not interested in most of the automatically added document metadata
510 next if ($infodb_value_key eq "archivedir" ||
511 $infodb_value_key eq "assocfilepath" ||
512 $infodb_value_key eq "childtype" ||
513 $infodb_value_key eq "contains" ||
514 $infodb_value_key eq "docnum" ||
515 $infodb_value_key eq "doctype" ||
516 $infodb_value_key eq "Encoding" ||
517 $infodb_value_key eq "FileSize" ||
518 $infodb_value_key eq "hascover" ||
519 $infodb_value_key eq "hastxt" ||
520 $infodb_value_key eq "lastmodified" ||
521 $infodb_value_key eq "metadataset" ||
522 $infodb_value_key eq "thistype" ||
523 $infodb_value_key =~ /^metadatafreq\-/ ||
524 $infodb_value_key =~ /^metadatalist\-/);
525
526 foreach my $infodb_value (@{$infodb_map->{$infodb_value_key}})
527 {
528 print $infodb_handle "INSERT INTO document_metadata (docOID, element, value) VALUES ('" . $safe_infodb_key . "', '" . &sqlite_safe($infodb_value_key) . "', '" . &sqlite_safe($infodb_value) . "');\n";
529 }
530 }
531 }
532}
533
534
535
536sub delete_infodb_entry_sqlite
537{
538 my $infodb_handle = shift(@_);
539 my $infodb_key = shift(@_);
540
541 # Delete the key from the "data" table
542
543 my $safe_infodb_key = &sqlite_safe($infodb_key);
544
545 print $infodb_handle "DELETE FROM data WHERE key='" . $safe_infodb_key . "';\n";
546
547 # If this infodb entry is for a document, delete the
548 # "document_metadata" table entry also (for use by the dynamic classifiers)
549 if ($infodb_key !~ /\./)
550 {
551 # Possible for there not to be a docOID matching this infodb_key
552 # (entries are only made when <doctype> == doc
553 # Attempt to delete it, and don't complain if one isn't found
554
555 print $infodb_handle "DELETE FROM document_metadata WHERE docOID='" . $safe_infodb_key . "';\n";
556
557 }
558}
559
560
561
562
563
564
565sub sqlite_safe
566{
567 my $value = shift(@_);
568
569 # Escape any single quotes in the value
570 $value =~ s/\'/\'\'/g;
571
572 return $value;
573}
574
575
576
577# ----------------------------------------------------------------------------------------
578# MSSQL IMPLEMENTATION
579# ----------------------------------------------------------------------------------------
580
581my $mssql_collection_name = "";
582my $mssql_data_table_name = "";
583my $mssql_document_metadata_table_name = "";
584
585
586sub open_infodb_write_handle_mssql
587{
588 my $infodb_file_path = shift(@_);
589
590 # You might have to install the DBD::ADO module from CPAN
591 #================================================================#
592 # Uncomment this if you want to use MSSQL!!!
593 # By the way, MSSQL only works on a Windows machine...
594 #================================================================#
595 #use DBI;
596 #use DBD::ADO;
597 #Win32::OLE->Option(CP => Win32::OLE::CP_UTF8);
598
599 # The hard coded server connection thingy which should be placed
600 # in some configuration file.
601 # If you have problem connecting to your MS SQL server:
602 # 1. Check if your MSSQL server has been started.
603 # 2. Check if the TCP/IP connection has been enabled.
604 # 3. Use telnet to the server
605 # (don't forget to specify the port, which can be found in the configuration manager)
606 # If none of the above helped, the you need to start googling then.
607 my $host = "localhost,1660"; # Need to look up your SQL server and see what port is it using.
608 my $user = "sa";
609 my $pwd = "[When installing the MSSQL, you will be asked to input a password for the sa user, use that password]";
610 my $database = "[Create a database in MSSQL and use it here]";
611
612 # Create the unique name for the table
613 # We do not want to change the database for the current running index
614 # Therefore we use timestamp and collection short name to create an unqiue name
615 my $cur_time = time();
616 my $unique_key = $mssql_collection_name . "_" . $cur_time;
617 $mssql_data_table_name = "data_" . $unique_key;
618 $mssql_document_metadata_table_name = "document_metadata_" . $unique_key;
619 print STDERR "MSSQL: Creating unique table name. Unique ID:[" . $unique_key . "]\n";
620
621 # Store these information into the infodbfile
622 open(FH, ">" . $infodb_file_path);
623 print FH "mss-host\t" . $host . "\n";
624 print FH "username\t" . $user . "\n";
625 print FH "password\t" . $pwd . "\n";
626 print FH "database\t" . $database . "\n";
627 print FH "tableid\t" . $unique_key . "\n";
628 close(FH);
629 print STDERR "MSSQL: Saving db info into :[" . $infodb_file_path . "]\n";
630
631 # Make the connection
632 my $dsn = "Provider=SQLNCLI;Server=$host;Database=$database";
633 my $infodb_handle = DBI->connect("dbi:ADO:$dsn", $user, $pwd, { RaiseError => 1, AutoCommit => 1}) || return undef;
634 print STDERR "MSSQL: Connect to MS SQL database. DSN:[" . $dsn . "]\n";
635
636 # Make sure the data table has been created.
637 my $data_table_checker_array = dbgetarray($infodb_handle, "SELECT name FROM sysobjects WHERE name = '" . $mssql_data_table_name . "' AND OBJECTPROPERTY(id,'IsUserTable') = 1");
638 if (scalar(@{$data_table_checker_array}) == 0)
639 {
640 dbquery($infodb_handle, "CREATE TABLE " . $mssql_data_table_name . " (one_key NVARCHAR(50) UNIQUE, one_value NVARCHAR(MAX))");
641 }
642 print STDERR "MSSQL: Making sure the data table(" . $mssql_data_table_name . ") exists\n";
643
644 # Make sure the document_metadata table has been created.
645 my $document_metadata_table_checker_array = dbgetarray($infodb_handle, "SELECT name FROM sysobjects WHERE name = '" . $mssql_document_metadata_table_name . "' AND OBJECTPROPERTY(id,'IsUserTable') = 1");
646 if (scalar(@{$document_metadata_table_checker_array}) == 0)
647 {
648 dbquery($infodb_handle, "CREATE TABLE " . $mssql_document_metadata_table_name . " (id INTEGER IDENTITY(1,1) PRIMARY KEY, docOID NVARCHAR(50), element NVARCHAR(MAX), value NVARCHAR(MAX))");
649 dbquery($infodb_handle, "CREATE INDEX dmd ON " . $mssql_document_metadata_table_name . "(docOID)");
650 }
651 print STDERR "MSSQL: Making sure the document_metadata table(" . $mssql_data_table_name . ") exists.\n";
652
653 return $infodb_handle;
654}
655
656
657sub close_infodb_write_handle_mssql
658{
659 my $infodb_handle = shift(@_);
660
661 $infodb_handle->disconnect();
662}
663
664
665sub get_infodb_file_path_mssql
666{
667 my $collection_name = shift(@_);
668 my $infodb_directory_path = shift(@_);
669
670 my $infodb_file_extension = ".mssqldbinfo";
671 my $infodb_file_name = &util::get_dirsep_tail($collection_name) . $infodb_file_extension;
672
673 # This will be used in the open_infodb_write_handle_mssql function
674 $mssql_collection_name = $collection_name;
675
676 return &util::filename_cat($infodb_directory_path, $infodb_file_name);
677}
678
679
680sub read_infodb_file_mssql
681{
682 my $infodb_file_path = shift(@_);
683 my $infodb_map = shift(@_);
684
685 # !! TO IMPLEMENT
686}
687
688
689sub write_infodb_entry_mssql
690{
691 my $infodb_handle = shift(@_);
692 my $infodb_key = shift(@_);
693 my $infodb_map = shift(@_);
694
695 # Add the key -> value mapping into the "data" table
696 my $infodb_entry_value = "";
697 foreach my $infodb_value_key (keys(%$infodb_map))
698 {
699 foreach my $infodb_value (@{$infodb_map->{$infodb_value_key}})
700 {
701 $infodb_entry_value .= "<$infodb_value_key>" . &Encode::decode_utf8($infodb_value) . "\n";
702 }
703 }
704
705 # Prepare the query
706 my $safe_infodb_key = &mssql_safe($infodb_key);
707 my $query = "INSERT INTO " . $mssql_data_table_name . " (one_key, one_value) VALUES (N'" . $safe_infodb_key . "', N'" . &mssql_safe($infodb_entry_value) . "')";
708 dbquery($infodb_handle, $query);
709
710 # If this infodb entry is for a document, add all the interesting document metadata to the
711 # "document_metadata" table (for use by the dynamic classifiers)
712 if ($infodb_key !~ /\./ && $infodb_entry_value =~ /\<doctype\>doc\n/)
713 {
714 dbquery($infodb_handle, "DELETE FROM " . $mssql_document_metadata_table_name . " WHERE docOID=N'" . $safe_infodb_key . "'");
715
716 foreach my $infodb_value_key (keys(%$infodb_map))
717 {
718 # We're not interested in most of the automatically added document metadata
719 next if ($infodb_value_key eq "archivedir" ||
720 $infodb_value_key eq "assocfilepath" ||
721 $infodb_value_key eq "childtype" ||
722 $infodb_value_key eq "contains" ||
723 $infodb_value_key eq "docnum" ||
724 $infodb_value_key eq "doctype" ||
725 $infodb_value_key eq "Encoding" ||
726 $infodb_value_key eq "FileSize" ||
727 $infodb_value_key eq "hascover" ||
728 $infodb_value_key eq "hastxt" ||
729 $infodb_value_key eq "lastmodified" ||
730 $infodb_value_key eq "metadataset" ||
731 $infodb_value_key eq "thistype" ||
732 $infodb_value_key =~ /^metadatafreq\-/ ||
733 $infodb_value_key =~ /^metadatalist\-/);
734 foreach my $infodb_value (@{$infodb_map->{$infodb_value_key}})
735 {
736 $infodb_handle->{LongReadLen} = 65535; # Added for the encoding issue
737 my $query = "INSERT INTO " . $mssql_document_metadata_table_name . " (docOID, element, value) VALUES (N'" . $safe_infodb_key . "', N'" . &mssql_safe(&Encode::decode_utf8($infodb_value_key)) . "', N'" . &mssql_safe(&Encode::decode_utf8($infodb_value)) . "')";
738 dbquery($infodb_handle, $query);
739 }
740 }
741 }
742}
743
744sub delete_infodb_entry_mssql
745{
746 my $infodb_handle = shift(@_);
747 my $infodb_key = shift(@_);
748
749 # Delete the key from the "data" table
750
751
752 # Prepare the query
753 my $safe_infodb_key = &mssql_safe($infodb_key);
754 my $query = "DELETE FROM " . $mssql_data_table_name . " WHERE one_key=N'" . $safe_infodb_key . "'";
755 dbquery($infodb_handle, $query);
756
757 # If this infodb entry is for a document, add all the interesting document metadata to the
758 # "document_metadata" table (for use by the dynamic classifiers)
759 if ($infodb_key !~ /\./)
760 {
761 # Possible for there not to be a docOID matching this infodb_key
762 # (entries are only made when <doctype> == doc
763 # Attempt to delete it, and don't complain if one isn't found
764
765 dbquery($infodb_handle, "DELETE FROM " . $mssql_document_metadata_table_name . " WHERE docOID=N'" . $safe_infodb_key . "'");
766
767 }
768}
769
770
771
772sub mssql_safe
773{
774 my $value = shift(@_);
775
776 # Escape any single quotes in the value
777 $value =~ s/\'/\'\'/g;
778
779 return $value;
780}
781
782
783sub dbquery
784{
785 my $infodb_handle = shift(@_);
786 my $sql_query = shift(@_);
787
788 # Execute the SQL statement
789 my $statement_handle = $infodb_handle->prepare($sql_query);
790 $statement_handle->execute();
791 if ($statement_handle->err)
792 {
793 print STDERR "Error:" . $statement_handle->errstr . "\n";
794 return undef;
795 }
796
797 return $statement_handle;
798}
799
800
801sub dbgetarray
802{
803 my $infodb_handle = shift(@_);
804 my $sql_query = shift(@_);
805
806 my $statement_handle = dbquery($infodb_handle, $sql_query);
807 my $return_array = [];
808
809 # Iterate through the results and push them into an array
810 if (!defined($statement_handle))
811 {
812 return [];
813 }
814
815 while ((my $temp_hash = $statement_handle->fetchrow_hashref()))
816 {
817 push(@$return_array, $temp_hash);
818 }
819
820 return $return_array;
821}
822
823
8241;
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