source: main/trunk/greenstone2/perllib/basebuilder.pm@ 23946

Last change on this file since 23946 was 23946, checked in by ak19, 13 years ago

Xiaofeng found that the OAI-related changes to do with earliestDatestamp were causing problems for him when a die statement got executed. It just prints a warning now.

  • Property svn:keywords set to Author Date Id Revision
File size: 25.1 KB
Line 
1###########################################################################
2#
3# basebuilder.pm -- base class for collection builders
4# A component of the Greenstone digital library software
5# from the New Zealand Digital Library Project at the
6# University of Waikato, New Zealand.
7#
8# Copyright (C) 1999 New Zealand Digital Library Project
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 basebuilder;
27
28use strict;
29no strict 'refs'; # allow filehandles to be variables and viceversa
30
31use classify;
32use cfgread;
33use colcfg;
34use dbutil;
35use plugin;
36use util;
37
38
39BEGIN {
40 # set autoflush on for STDERR and STDOUT so that mgpp
41 # doesn't get out of sync with plugins
42 STDOUT->autoflush(1);
43 STDERR->autoflush(1);
44}
45
46END {
47 STDOUT->autoflush(0);
48 STDERR->autoflush(0);
49}
50
51our $maxdocsize = 12000;
52
53# used to signify "gs2"(default) or "gs3"
54our $gs_mode = "gs2";
55
56sub new {
57 my ($class, $collection, $source_dir, $build_dir, $verbosity,
58 $maxdocs, $debug, $keepold, $incremental, $incremental_mode,
59 $remove_empty_classifications,
60 $outhandle, $no_text, $failhandle, $gli) = @_;
61
62 $outhandle = *STDERR unless defined $outhandle;
63 $no_text = 0 unless defined $no_text;
64 $failhandle = *STDERR unless defined $failhandle;
65
66 # create a builder object
67 my $self = bless {'collection'=>$collection,
68 'source_dir'=>$source_dir,
69 'build_dir'=>$build_dir,
70 'verbosity'=>$verbosity,
71 'maxdocs'=>$maxdocs,
72 'debug'=>$debug,
73 'keepold'=>$keepold,
74 'incremental'=>$incremental,
75 'incremental_mode'=>$incremental_mode,
76 'remove_empty_classifications'=>$remove_empty_classifications,
77 'outhandle'=>$outhandle,
78 'no_text'=>$no_text,
79 'failhandle'=>$failhandle,
80 'notbuilt'=>{}, # indexes not built
81 'gli'=>$gli
82 }, $class;
83
84 $self->{'gli'} = 0 unless defined $self->{'gli'};
85
86 # Read in the collection configuration file.
87 my ($colcfgname);
88 ($colcfgname, $gs_mode) = &colcfg::get_collect_cfg_name($outhandle);
89 $self->{'collect_cfg'} = &colcfg::read_collection_cfg ($colcfgname, $gs_mode);
90
91 if ($gs_mode eq "gs3") {
92 # read it in again to save the original form for later writing out
93 # of buildConfig.xml
94 # we use this preserve object because $self->{'collect_cfg'}->{'classify'} somewhat gets modified during the calling of &classify::load_classifiers.
95 $self->{'collect_cfg_preserve'} = &colcfg::read_collection_cfg ($colcfgname, $gs_mode);
96 }
97
98 # get the database type for this collection from the collect.cfg file (may be undefined)
99 $self->{'infodbtype'} = $self->{'collect_cfg'}->{'infodbtype'} || &dbutil::get_default_infodb_type();
100
101
102 # load up any dontdb fields
103 $self->{'dontdb'} = {};
104 if (defined ($self->{'collect_cfg'}->{'dontgdbm'})) {
105 foreach my $dg (@{$self->{'collect_cfg'}->{'dontgdbm'}}) {
106 $self->{'dontdb'}->{$dg} = 1;
107 }
108 }
109
110 $self->{'maxnumeric'} = 4;
111 return $self;
112}
113
114# stuff has been moved here from new, so we can use subclass methods
115sub init {
116 my $self = shift(@_);
117
118 my $outhandle = $self->{'outhandle'};
119 my $failhandle = $self->{'failhandle'};
120
121 $self->generate_index_list();
122 my $indexes = $self->{'collect_cfg'}->{'indexes'};
123 if (defined $indexes) {
124 # sort out subcollection indexes
125 if (defined $self->{'collect_cfg'}->{'indexsubcollections'}) {
126 $self->{'collect_cfg'}->{'indexes'} = [];
127 foreach my $subcollection (@{$self->{'collect_cfg'}->{'indexsubcollections'}}) {
128 foreach my $index (@$indexes) {
129 push (@{$self->{'collect_cfg'}->{'indexes'}}, "$index:$subcollection");
130 }
131 }
132 }
133
134 # sort out language subindexes
135 if (defined $self->{'collect_cfg'}->{'languages'}) {
136 $indexes = $self->{'collect_cfg'}->{'indexes'};
137 $self->{'collect_cfg'}->{'indexes'} = [];
138 foreach my $language (@{$self->{'collect_cfg'}->{'languages'}}) {
139 foreach my $index (@$indexes) {
140 if (defined ($self->{'collect_cfg'}->{'indexsubcollections'})) {
141 push (@{$self->{'collect_cfg'}->{'indexes'}}, "$index:$language");
142 }
143 else { # add in an empty subcollection field
144 push (@{$self->{'collect_cfg'}->{'indexes'}}, "$index\:\:$language");
145 }
146 }
147 }
148 }
149 }
150
151 if (defined($self->{'collect_cfg'}->{'indexes'})) {
152 # make sure that the same index isn't specified more than once
153 my %tmphash = ();
154 my @tmparray = @{$self->{'collect_cfg'}->{'indexes'}};
155 $self->{'collect_cfg'}->{'indexes'} = [];
156 foreach my $i (@tmparray) {
157 if (!defined ($tmphash{$i})) {
158 push (@{$self->{'collect_cfg'}->{'indexes'}}, $i);
159 $tmphash{$i} = 1;
160 }
161 }
162 } else {
163 $self->{'collect_cfg'}->{'indexes'} = [];
164 }
165
166 # check incremental against whether builder can cope or not.
167 if ($self->{'incremental'} && !$self->is_incremental_capable()) {
168 print $outhandle "WARNING: The indexer used is not capable of incremental building. Reverting to -removeold\n";
169 $self->{'keepold'} = 0;
170 $self->{'incremental'} = 0;
171 $self->{'incremental_mode'} = "none";
172
173 }
174
175
176 # get the list of plugins for this collection
177 my $plugins = [];
178 if (defined $self->{'collect_cfg'}->{'plugin'}) {
179 $plugins = $self->{'collect_cfg'}->{'plugin'};
180 }
181
182 # load all the plugins
183
184 #build up the extra global options for the plugins
185 my @global_opts = ();
186 if (defined $self->{'collect_cfg'}->{'separate_cjk'} && $self->{'collect_cfg'}->{'separate_cjk'} =~ /^true$/i) {
187 push @global_opts, "-separate_cjk";
188 }
189 $self->{'pluginfo'} = &plugin::load_plugins ($plugins, $self->{'verbosity'}, $outhandle, $failhandle, \@global_opts, $self->{'incremental_mode'});
190
191 if (scalar(@{$self->{'pluginfo'}}) == 0) {
192 print $outhandle "No plugins were loaded.\n";
193 die "\n";
194 }
195
196 # get the list of classifiers for this collection
197 my $classifiers = [];
198 if (defined $self->{'collect_cfg'}->{'classify'}) {
199 $classifiers = $self->{'collect_cfg'}->{'classify'};
200 }
201
202 # load all the classifiers
203 $self->{'classifiers'} = &classify::load_classifiers ($classifiers, $self->{'build_dir'}, $outhandle);
204
205 # load up the document processor for building
206 # if a buildproc class has been created for this collection, use it
207 # otherwise, use the default buildproc for the builder we are initialising
208 my ($buildprocdir, $buildproctype);
209 my $collection = $self->{'collection'};
210 if (-e "$ENV{'GSDLCOLLECTDIR'}/custom/${collection}/perllib/custombuildproc.pm") {
211 $buildprocdir = "$ENV{'GSDLCOLLECTDIR'}/custom/${collection}/perllib";
212 $buildproctype = "custombuildproc";
213 } elsif (-e "$ENV{'GSDLCOLLECTDIR'}/perllib/custombuildproc.pm") {
214 $buildprocdir = "$ENV{'GSDLCOLLECTDIR'}/perllib";
215 $buildproctype = "custombuildproc";
216 } elsif (-e "$ENV{'GSDLCOLLECTDIR'}/perllib/${collection}buildproc.pm") {
217 $buildprocdir = "$ENV{'GSDLCOLLECTDIR'}/perllib";
218 $buildproctype = "${collection}buildproc";
219 } else {
220 $buildprocdir = "$ENV{'GSDLHOME'}/perllib";
221 $buildproctype = $self->default_buildproc();
222 }
223 require "$buildprocdir/$buildproctype.pm";
224
225 eval("\$self->{'buildproc'} = new $buildproctype(\$self->{'collection'}, " .
226 "\$self->{'source_dir'}, \$self->{'build_dir'}, \$self->{'keepold'}, \$self->{'verbosity'}, \$self->{'outhandle'})");
227 die "$@" if $@;
228
229 # We call set_infodbtype() now so the buildproc knows the infodbtype for all phases of the build
230 $self->{'buildproc'}->set_infodbtype($self->{'infodbtype'});
231
232 $self->generate_index_options();
233
234 if (!$self->{'debug'} && !$self->{'keepold'}) {
235 # remove any old builds
236 &util::rm_r($self->{'build_dir'});
237 &util::mk_all_dir($self->{'build_dir'});
238
239 # make the text directory
240 my $textdir = "$self->{'build_dir'}/text";
241 &util::mk_all_dir($textdir);
242 }
243
244 if ($self->{'incremental'}) {
245 # some classes may need to do some additional initialisation
246 $self->init_for_incremental_build();
247 }
248
249}
250
251sub is_incremental_capable
252{
253 # By default we return 'no' as the answer
254 # Safer to assume non-incremental to start with, and then override in
255 # inherited classes that are.
256
257 return 0;
258}
259
260# implement this in subclass if want to do additional initialisation for an
261# incremental build
262sub init_for_incremental_build {
263 my $self = shift (@_);
264}
265
266sub deinit {
267 my $self = shift (@_);
268
269 &plugin::deinit($self->{'pluginfo'},$self->{'buildproc'});
270}
271
272sub generate_index_options {
273 my $self = shift (@_);
274
275 my $separate_cjk = 0;
276
277 if (defined($self->{'collect_cfg'}->{'indexoptions'})) {
278 foreach my $option (@{$self->{'collect_cfg'}->{'indexoptions'}}) {
279 if ($option =~ /separate_cjk/) {
280 $separate_cjk = 1;
281 }
282 }
283 }
284 # set this for building
285 $self->{'buildproc'}->set_separate_cjk($separate_cjk);
286 # record it for build.cfg
287 $self->{'separate_cjk'} = $separate_cjk;
288}
289
290sub set_sections_index_document_metadata {
291 my $self = shift (@_);
292 my ($index) = @_;
293
294 $self->{'buildproc'}->set_sections_index_document_metadata($index);
295}
296
297sub set_maxnumeric {
298 my $self = shift (@_);
299 my ($maxnumeric) = @_;
300
301 $self->{'maxnumeric'} = $maxnumeric;
302}
303sub set_strip_html {
304 my $self = shift (@_);
305 my ($strip) = @_;
306
307 $self->{'strip_html'} = $strip;
308 $self->{'buildproc'}->set_strip_html($strip);
309}
310
311sub compress_text {
312 my $self = shift (@_);
313 my ($textindex) = @_;
314
315 print STDERR "compress_text() should be implemented in subclass!!";
316 return;
317}
318
319
320sub build_indexes {
321 my $self = shift (@_);
322 my ($indexname) = @_;
323 my $outhandle = $self->{'outhandle'};
324
325 my $indexes = [];
326 if (defined $indexname && $indexname =~ /\w/) {
327 push @$indexes, $indexname;
328 } else {
329 $indexes = $self->{'collect_cfg'}->{'indexes'};
330 }
331
332 # create the mapping between the index descriptions
333 # and their directory names (includes subcolls and langs)
334 $self->{'index_mapping'} = $self->create_index_mapping ($indexes);
335
336 # build each of the indexes
337 foreach my $index (@$indexes) {
338 if ($self->want_built($index)) {
339 print $outhandle "\n*** building index $index in subdirectory " .
340 "$self->{'index_mapping'}->{$index}\n" if ($self->{'verbosity'} >= 1);
341 print STDERR "<Stage name='Index' source='$index'>\n" if $self->{'gli'};
342 $self->build_index($index);
343 } else {
344 print $outhandle "\n*** ignoring index $index\n" if ($self->{'verbosity'} >= 1);
345 }
346 }
347
348 $self->build_indexes_extra();
349
350}
351
352# implement this in subclass if want to do extra stuff at the end of building
353# all the indexes
354sub build_indexes_extra {
355 my $self = shift(@_);
356
357}
358
359sub build_index {
360 my $self = shift (@_);
361 my ($index) = @_;
362
363 print STDERR "build_index should be implemented in subclass\n";
364 return;
365}
366
367
368
369sub make_infodatabase {
370 my $self = shift (@_);
371 my $outhandle = $self->{'outhandle'};
372
373 print STDERR "BuildDir: $self->{'build_dir'}\n";
374
375 my $textdir = &util::filename_cat($self->{'build_dir'}, "text");
376 my $assocdir = &util::filename_cat($self->{'build_dir'}, "assoc");
377 &util::mk_all_dir ($textdir);
378 &util::mk_all_dir ($assocdir);
379
380 # Get info database file path
381 my $infodb_type = $self->{'infodbtype'};
382 my $infodb_file_path = &dbutil::get_infodb_file_path($infodb_type, $self->{'collection'}, $textdir);
383
384 print $outhandle "\n*** creating the info database and processing associated files\n"
385 if ($self->{'verbosity'} >= 1);
386 print STDERR "<Stage name='CreateInfoData'>\n" if $self->{'gli'};
387
388 # init all the classifiers
389 &classify::init_classifiers ($self->{'classifiers'});
390
391 my $reconstructed_docs = undef;
392 my $database_recs = undef;
393
394 if ($self->{'incremental'}) {
395 $database_recs = {};
396
397 &dbutil::read_infodb_file($infodb_type, $infodb_file_path, $database_recs);
398 }
399
400
401 # Important (for memory usage reasons) that we obtain the filehandle
402 # here for writing out to the database, rather than after
403 # $reconstructed_docs has been set up (assuming -incremental is on)
404 #
405 # This is because when we open a pipe to txt2db [using open()]
406 # this triggers a fork() followed by exec(). $reconstructed_docs
407 # can get very large, and so if we did the open() after this, it means
408 # the fork creates a clone of the *large* process image which (admittedly)
409 # is then quickly replaced in the execve() with the much smaller image for
410 # 'txt2db'. The trouble is, in that seismic second caused by
411 # the fork(), the system really does need to have all that memory available
412 # even though it isn't ultimately used. The result is an out of memory
413 # error.
414
415 my ($infodb_handle);
416 if ($self->{'debug'}) {
417 $infodb_handle = *STDOUT;
418 }
419 else {
420 $infodb_handle = &dbutil::open_infodb_write_handle($infodb_type, $infodb_file_path);
421 if (!defined($infodb_handle))
422 {
423 print STDERR "<FatalError name='NoRunText2DB'/>\n</Stage>\n" if $self->{'gli'};
424 die "builder::make_infodatabase - couldn't open infodb write handle\n";
425 }
426 }
427
428 if ($self->{'incremental'}) {
429 # reconstruct doc_obj metadata from database for all docs
430 $reconstructed_docs
431 = &classify::reconstruct_doc_objs_metadata($infodb_type,
432 $infodb_file_path,
433 $database_recs);
434 }
435
436 # set up the document processor
437
438 $self->{'buildproc'}->set_output_handle ($infodb_handle);
439 $self->{'buildproc'}->set_mode ('infodb');
440 $self->{'buildproc'}->set_assocdir ($assocdir);
441 $self->{'buildproc'}->set_dontdb ($self->{'dontdb'});
442 $self->{'buildproc'}->set_classifiers ($self->{'classifiers'});
443 $self->{'buildproc'}->set_indexing_text (0);
444 $self->{'buildproc'}->set_store_text(1);
445 $self->{'buildproc'}->set_store_metadata_coverage ($self->{'collect_cfg'}->{'store_metadata_coverage'});
446
447 # make_infodatabase needs full reset even for incremental build
448 # as incremental works by reconstructing all docs from the database and
449 # then adding in the new ones
450 $self->{'buildproc'}->zero_reset();
451
452 $self->{'buildproc'}->{'mdprefix_fields'} = {};
453
454 &plugin::read ($self->{'pluginfo'}, $self->{'source_dir'},
455 "", {}, {}, $self->{'buildproc'}, $self->{'maxdocs'},0, $self->{'gli'});
456
457 if ($self->{'incremental'}) {
458 # create flat classify structure, ready for new docs to be added
459 foreach my $doc_obj ( @$reconstructed_docs ) {
460 if (! defined $self->{'buildproc'}->{'dont_process_reconstructed'}->{$doc_obj->get_OID()}) {
461 print $outhandle " Adding reconstructed ", $doc_obj->get_OID(), " into classify structures\n";
462 $self->{'buildproc'}->process($doc_obj,undef);
463 }
464 }
465 }
466 # this has changed to only output collection meta if its
467 # not in the config file
468 $self->output_collection_meta($infodb_handle);
469
470 # output classification information
471 &classify::output_classify_info ($self->{'classifiers'}, $infodb_type, $infodb_handle,
472 $self->{'remove_empty_classifications'},
473 $self->{'gli'});
474
475 # Output classifier reverse lookup, used in incremental deletion
476 ####&classify::print_reverse_lookup($infodb_handle);
477
478 # output doclist
479 my @doc_list = $self->{'buildproc'}->get_doc_list();
480 my $browselist_infodb = { 'hastxt' => [ "0" ],
481 'childtype' => [ "VList" ],
482 'numleafdocs' => [ scalar(@doc_list) ],
483 'thistype' => [ "Invisible" ],
484 'contains' => [ join(";", @doc_list) ] };
485 &dbutil::write_infodb_entry($infodb_type, $infodb_handle, "browselist", $browselist_infodb);
486
487 &dbutil::close_infodb_write_handle($infodb_type, $infodb_handle) if !$self->{'debug'};
488
489 if ($infodb_type eq "gdbm-txtgz") {
490 my $gdb_infodb_file_path = &dbutil::get_infodb_file_path("gdbm", $self->{'collection'}, $textdir);
491 if (-e $gdb_infodb_file_path) {
492 &util::rm($gdb_infodb_file_path);
493 }
494 }
495 print STDERR "</Stage>\n" if $self->{'gli'};
496}
497
498sub make_auxiliary_files {
499 my $self = shift (@_);
500 my ($index);
501 my $build_cfg = {};
502 # subclasses may have already defined stuff in here
503 if (defined $self->{'build_cfg'}) {
504 $build_cfg = $self->{'build_cfg'};
505 }
506
507 my $outhandle = $self->{'outhandle'};
508
509 print $outhandle "\n*** creating auxiliary files \n" if ($self->{'verbosity'} >= 1);
510 print STDERR "<Stage name='CreatingAuxilary'>\n" if $self->{'gli'};
511
512 # get the text directory
513 &util::mk_all_dir ($self->{'build_dir'});
514
515 # store the build date
516 $build_cfg->{'builddate'} = time;
517 $build_cfg->{'buildtype'} = $self->{'buildtype'};
518 $build_cfg->{'indexstem'} = &util::get_dirsep_tail($self->{'collection'});
519 $build_cfg->{'stemindexes'} = $self->{'stemindexes'};
520 if ($self->{'separate_cjk'}) {
521 $build_cfg->{'separate_cjk'} = "true";
522 }
523
524 # store the number of documents and number of bytes
525 $build_cfg->{'numdocs'} = $self->{'buildproc'}->get_num_docs();
526 $build_cfg->{'numsections'} = $self->{'buildproc'}->get_num_sections();
527 $build_cfg->{'numbytes'} = $self->{'buildproc'}->get_num_bytes();
528
529 # store the mapping between the index names and the directory names
530 # the index map is used to determine what indexes there are, so any that are not built should not be put into the map.
531 my @indexmap = ();
532 foreach my $index (@{$self->{'index_mapping'}->{'indexmaporder'}}) {
533 if (not defined ($self->{'notbuilt'}->{$index})) {
534 push (@indexmap, "$index\-\>$self->{'index_mapping'}->{'indexmap'}->{$index}");
535 }
536 }
537 $build_cfg->{'indexmap'} = \@indexmap if scalar (@indexmap);
538
539 my @subcollectionmap = ();
540 foreach my $subcollection (@{$self->{'index_mapping'}->{'subcollectionmaporder'}}) {
541 push (@subcollectionmap, "$subcollection\-\>" .
542 $self->{'index_mapping'}->{'subcollectionmap'}->{$subcollection});
543 }
544 $build_cfg->{'subcollectionmap'} = \@subcollectionmap if scalar (@subcollectionmap);
545
546 my @languagemap = ();
547 foreach my $language (@{$self->{'index_mapping'}->{'languagemaporder'}}) {
548 push (@languagemap, "$language\-\>" .
549 $self->{'index_mapping'}->{'languagemap'}->{$language});
550 }
551 $build_cfg->{'languagemap'} = \@languagemap if scalar (@languagemap);
552
553 my @notbuilt = ();
554 foreach my $nb (keys %{$self->{'notbuilt'}}) {
555 push (@notbuilt, $nb);
556 }
557 $build_cfg->{'notbuilt'} = \@notbuilt if scalar (@notbuilt);
558
559 $build_cfg->{'maxnumeric'} = $self->{'maxnumeric'};
560
561 $build_cfg->{'infodbtype'} = $self->{'infodbtype'};
562
563 # write out the earliestDatestamp information needed for OAI
564 my $archivedir = &util::filename_cat ($ENV{'GSDLCOLLECTDIR'}, "archives");
565 if(!-d $archivedir) {
566 $archivedir = &util::filename_cat ($ENV{'GSDLCOLLECTDIR'}, "export");
567 }
568 my $earliestDatestampFile = &util::filename_cat ($archivedir, "earliestDatestamp");
569 my $earliestDatestamp = 0;
570 if (open(FIN,"<$earliestDatestampFile")) {
571 {
572 # slurp in file as a single line
573 local $/ = undef;
574 $earliestDatestamp = <FIN>;
575 #&unicode::ensure_utf8(\$earliestDatestamp); # turn any high bytes that aren't valid utf-8 into utf-8.
576 }
577 close(FIN);
578 }
579 else {
580 print $outhandle "Warning: unable to read collection's earliestDatestamp from $earliestDatestampFile.\n";
581 print $outhandle "Setting value to 0.\n";
582 }
583 $build_cfg->{'earliestDatestamp'} = $earliestDatestamp;
584
585 $self->build_cfg_extra($build_cfg);
586
587 if ($gs_mode eq "gs2") {
588 &colcfg::write_build_cfg(&util::filename_cat($self->{'build_dir'},"build.cfg"), $build_cfg);
589 }
590 if ($gs_mode eq "gs3") {
591
592 &colcfg::write_build_cfg_xml(&util::filename_cat($self->{'build_dir'}, "buildConfig.xml"), $build_cfg, $self->{'collect_cfg_preserve'});
593 }
594
595 print STDERR "</Stage>\n" if $self->{'gli'};
596}
597
598# implement this in subclass if want to add extra stuff to build.cfg
599sub build_cfg_extra {
600 my $self = shift(@_);
601 my ($build_cfg) = @_;
602
603}
604
605
606sub collect_specific {
607 my $self = shift (@_);
608}
609
610sub want_built {
611 my $self = shift (@_);
612 my ($index) = @_;
613
614 if (defined ($self->{'collect_cfg'}->{'dontbuild'})) {
615 foreach my $checkstr (@{$self->{'collect_cfg'}->{'dontbuild'}}) {
616 if ($index =~ /^$checkstr$/) {
617 $self->{'notbuilt'}->{$index} = 1;
618 return 0;
619 }
620 }
621 }
622
623 return 1;
624}
625
626sub create_index_mapping {
627 my $self = shift (@_);
628 my ($indexes) = @_;
629
630 print STDERR "create_index_mapping should be implemented in subclass\n";
631 my %mapping = ();
632 return \%mapping;
633}
634
635# returns a processed version of a field.
636# if the field has only one component the processed
637# version will contain the first character and next consonant
638# of that componant - otherwise it will contain the first
639# character of the first two components
640# only uses letdig (\w) characters now
641sub process_field {
642 my $self = shift (@_);
643 my ($field) = @_;
644
645 return "" unless (defined ($field) && $field =~ /\S/);
646
647 my ($a, $b);
648 my @components = split /,/, $field;
649 if (scalar @components >= 2) {
650 # pick the first letdig from the first two field names
651 ($a) = $components[0] =~ /^[^\w]*(\w)/;
652 ($b) = $components[1] =~ /^[^\w]*(\w)/;
653 } else {
654 # pick the first two letdig chars
655 ($a, $b) = $field =~ /^[^\w]*(\w)[^\w]*?(\w)/i;
656 }
657 # there may not have been any letdigs...
658 $a = 'a' unless defined $a;
659 $b = '0' unless defined $b;
660
661 my $newfield = "$a$b";
662 if ($newfield =~ /^\d\d$/) {
663 # digits only - Greenstone runtime doesn't like this.
664 $newfield = "a$a";
665 }
666 return $newfield;
667
668}
669
670sub get_next_version {
671 my $self = shift (@_);
672 my ($nameref) = @_;
673 my $num=0;
674 if ($$nameref =~ /(\d\d)$/) {
675 $num = $1; $num ++;
676 $$nameref =~ s/\d\d$/$num/;
677 } elsif ($$nameref =~ /(\d)$/) {
678 $num = $1;
679 if ($num == 9) {$$nameref =~ s/\d$/10/;}
680 else {$num ++; $$nameref =~ s/\d$/$num/;}
681 } else {
682 $$nameref =~ s/.$/0/;
683 }
684}
685
686
687
688sub get_collection_meta_sets
689{
690 my $self = shift(@_);
691 my $collection_infodb = shift(@_);
692
693 my $mdprefix_fields = $self->{'buildproc'}->{'mdprefix_fields'};
694 foreach my $prefix (keys %$mdprefix_fields)
695 {
696 push(@{$collection_infodb->{"metadataset"}}, $prefix);
697
698 foreach my $field (keys %{$mdprefix_fields->{$prefix}})
699 {
700 push(@{$collection_infodb->{"metadatalist-$prefix"}}, $field);
701
702 my $val = $mdprefix_fields->{$prefix}->{$field};
703 push(@{$collection_infodb->{"metadatafreq-$prefix-$field"}}, $val);
704 }
705 }
706}
707
708
709# default is to output the metadata sets (prefixes) used in collection
710sub output_collection_meta
711{
712 my $self = shift(@_);
713 my $infodb_handle = shift(@_);
714
715 my %collection_infodb = ();
716 $self->get_collection_meta_sets(\%collection_infodb);
717 &dbutil::write_infodb_entry($self->{'infodbtype'}, $infodb_handle, "collection", \%collection_infodb);
718}
719
720# sometimes we need to read in an existing build.cfg - for example,
721# if doing each stage of building separately, or when doing incremental
722# building
723sub read_build_cfg {
724 my $self = shift(@_);
725
726 my $buildconfigfilename;
727
728 if ($gs_mode eq "gs2") {
729 $buildconfigfilename = "build.cfg";
730 } else {
731 $buildconfigfilename = "buildConfig.xml";
732 }
733
734 my $buildconfigfile = &util::filename_cat($self->{'build_dir'}, $buildconfigfilename);
735
736 if (!-e $buildconfigfile) {
737 # try the index dir - but do we know where it is?? try here
738 $buildconfigfile = &util::filename_cat($ENV{'GSDLCOLLECTDIR'}, "index", $buildconfigfilename);
739 if (!-e $buildconfigfile) {
740 #we cant find a config file - just ignore the field list
741 return undef;
742 }
743 }
744 return &colcfg::read_building_cfg( $buildconfigfile, $gs_mode);
745
746}
747
748sub print_stats {
749 my $self = shift (@_);
750
751 my $outhandle = $self->{'outhandle'};
752 my $indexing_text = $self->{'buildproc'}->get_indexing_text();
753 my $index = $self->{'buildproc'}->get_index();
754 my $num_bytes = $self->{'buildproc'}->get_num_bytes();
755 my $num_processed_bytes = $self->{'buildproc'}->get_num_processed_bytes();
756
757 if ($indexing_text) {
758 print $outhandle "Stats (Creating index $index)\n";
759 } else {
760 print $outhandle "Stats (Compressing text from $index)\n";
761 }
762 print $outhandle "Total bytes in collection: $num_bytes\n";
763 print $outhandle "Total bytes in $index: $num_processed_bytes\n";
764
765 if ($num_processed_bytes < 50 && ($indexing_text || !$self->{'no_text'})) {
766
767 if ($self->{'incremental'}) {
768 if ($num_processed_bytes == 0) {
769 if ($indexing_text) {
770 print $outhandle "No additional text was added to $index\n";
771 } elsif (!$self->{'no_text'}) {
772 print $outhandle "No additional text was compressed\n";
773 }
774 }
775 }
776 else {
777 print $outhandle "***************\n";
778 if ($indexing_text) {
779 print $outhandle "WARNING: There is very little or no text to process for $index\n";
780 } elsif (!$self->{'no_text'}) {
781 print $outhandle "WARNING: There is very little or no text to compress\n";
782 }
783 print $outhandle " Was this your intention?\n";
784 print $outhandle "***************\n";
785 }
786
787 }
788
789}
790
791
7921;
793
Note: See TracBrowser for help on using the repository browser.