[32536] | 1 | ###########################################################################
|
---|
| 2 | #
|
---|
[32542] | 3 | # GreenstoneSQLPlugin.pm -- reads into doc_obj from SQL db and docsql.xml
|
---|
[32536] | 4 | # Metadata and/or fulltext are stored in SQL db, the rest may be stored in
|
---|
| 5 | # the docsql .xml files.
|
---|
| 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 | # Copyright (C) 2001 New Zealand Digital Library Project
|
---|
| 11 | #
|
---|
| 12 | # This program is free software; you can redistribute it and/or modify
|
---|
| 13 | # it under the terms of the GNU General Public License as published by
|
---|
| 14 | # the Free Software Foundation; either version 2 of the License, or
|
---|
| 15 | # (at your option) any later version.
|
---|
| 16 | #
|
---|
| 17 | # This program is distributed in the hope that it will be useful,
|
---|
| 18 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
| 19 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
---|
| 20 | # GNU General Public License for more details.
|
---|
| 21 | #
|
---|
| 22 | # You should have received a copy of the GNU General Public License
|
---|
| 23 | # along with this program; if not, write to the Free Software
|
---|
| 24 | # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
---|
| 25 | #
|
---|
| 26 | ###########################################################################
|
---|
| 27 |
|
---|
| 28 | package GreenstoneSQLPlugin;
|
---|
| 29 |
|
---|
| 30 |
|
---|
| 31 | use strict;
|
---|
| 32 | no strict 'refs'; # allow filehandles to be variables and viceversa
|
---|
| 33 |
|
---|
| 34 | use DBI;
|
---|
| 35 | use docprint; # for new unescape_text() subroutine
|
---|
| 36 | use GreenstoneXMLPlugin;
|
---|
| 37 | use gssql;
|
---|
| 38 |
|
---|
| 39 |
|
---|
| 40 | # TODO:
|
---|
[32541] | 41 | # - Run TODOs here, in Plugout and in gssql.pm by Dr Bainbridge.
|
---|
[32536] | 42 | # - Have not yet tested writing out just meta or just fulltxt to sql db and reading just that
|
---|
| 43 | # back in from the sql db while the remainder is to be read back in from the docsql .xml files.
|
---|
| 44 |
|
---|
[32543] | 45 | # TODO: deal with incremental vs removeold. If docs removed from import folder, then import step
|
---|
| 46 | # won't delete it from archives but buildcol step will. Need to implement this with this database plugin or wherever the actual flow is
|
---|
| 47 |
|
---|
[32555] | 48 | # TODO Q: is "reindex" = del from db + add to db?
|
---|
| 49 | # - is this okay for reindexing, or will it need to modify existing values (update table)
|
---|
| 50 | # - if it's okay, what does reindex need to accomplish (and how) if the OID changes because hash id produced is different?
|
---|
| 51 | # - delete is accomplished in GS SQL Plugin, during buildcol.pl. When should reindexing take place?
|
---|
| 52 | # during SQL plugout/import.pl or during plugin? If adding is done by GSSQLPlugout, does it need to
|
---|
| 53 | # be reimplemented in GSSQLPlugin to support the adding portion of reindexing.
|
---|
| 54 |
|
---|
[32563] | 55 | # TODO: Add public instructions on using this plugin and its plugout: start with installing mysql binary, changing pwd, running the server (and the client against it for checking: basic cmds like create and drop). Then discuss db name, table names (per coll), db cols and col types, and how the plugout and plugin work.
|
---|
| 56 | # Discuss the plugin/plugout parameters.
|
---|
[32555] | 57 |
|
---|
| 58 |
|
---|
[32563] | 59 | # DONE:
|
---|
[32555] | 60 | # + TODO: Incremental delete can't work until GSSQLPlugout has implemented build_mode = incremental
|
---|
| 61 | # (instead of tossing away db on every build)
|
---|
| 62 | # + Ask about docsql naming convention adopted to identify OID. Better way?
|
---|
| 63 | # collection names -> table names: it seems hyphens not allowed. Changed to underscores.
|
---|
| 64 | # + Startup parameters (except removeold/build_mode)
|
---|
| 65 | # + how do we detect we're to do removeold during plugout in import.pl phase
|
---|
| 66 | # + incremental building: where do we need to add code to delete rows from our sql table after
|
---|
| 67 | # incrementally importing a coll with fewer docs (for instance)? What about deleted/modified meta?
|
---|
| 68 | # + Ask if I can assume that all SQL dbs (not just MySQL) will preserve the order of inserted nodes
|
---|
| 69 | # (sections) which in this case had made it easy to reconstruct the doc_obj in memory in the correct order.
|
---|
| 70 | # YES: Otherwise for later db types (drivers), can set order by primary key column and then order by did column
|
---|
[32563] | 71 | # + NOTTODO: when db is not running GLI is paralyzed -> can we set timeout on DBI connection attempt?
|
---|
| 72 | # NOT A PROBLEM: Tested to find DBI connection attempt fails immediately when MySQL server not
|
---|
| 73 | # running. The GLI "paralyzing" incident last time was not because of the gs sql connection code,
|
---|
| 74 | # but because my computer was freezing on-and-off.
|
---|
| 75 | # + "Courier" demo documents in lucene-sql collection: character (degree symbol) not preserved in title. Is this because we encode in utf8 when putting into db and reading back in?
|
---|
| 76 | # Test doc with meta and text like macron in Maori text.
|
---|
| 77 | # + TODO Q: During import, the GS SQL Plugin is called before the GS SQL Plugout with undesirable side
|
---|
| 78 | # effect that if the db doesn't exist, gssql::use_db() fails, as it won't create db.
|
---|
| 79 | # This got fixed when GSSQLPlugin stopped connecting on init().
|
---|
[32555] | 80 |
|
---|
| 81 |
|
---|
| 82 | ########################################################################################
|
---|
| 83 |
|
---|
[32536] | 84 | # GreenstoneSQLPlugin inherits from GreenstoneXMLPlugin so that it if meta or fulltext
|
---|
| 85 | # is still written out to doc.xml (docsql .xml), that will be processed as usual,
|
---|
| 86 | # whereas GreenstoneSQLPlugin will process all the rest (full text and/or meta, whichever
|
---|
| 87 | # is written out by GreenstoneSQLPlugout into the SQL db).
|
---|
| 88 |
|
---|
| 89 |
|
---|
| 90 | sub BEGIN {
|
---|
| 91 | @GreenstoneSQLPlugin::ISA = ('GreenstoneXMLPlugin');
|
---|
| 92 | }
|
---|
| 93 |
|
---|
| 94 | # This plugin must be in the document plugins pipeline IN PLACE OF GreenstoneXMLPlugin
|
---|
| 95 | # So we won't have a process exp conflict here.
|
---|
[32542] | 96 | # The structure of docsql.xml files is identical to doc.xml and the contents are similar except:
|
---|
| 97 | # - since metadata and/or fulltxt are stored in mysql db instead, just XML comments indicating
|
---|
| 98 | # this are left inside docsql.xml within the <Description> (for meta) and/or <Content> (for txt)
|
---|
| 99 | # - the root element Archive now has a docoid attribute: <Archive docoid="OID">
|
---|
[32536] | 100 | sub get_default_process_exp {
|
---|
| 101 | my $self = shift (@_);
|
---|
| 102 |
|
---|
[32542] | 103 | return q^(?i)docsql(-\d+)?\.xml$^; # regex based on this method in GreenstoneXMLPlugin
|
---|
| 104 | #return q^(?i)docsql(-.+)?\.xml$^; # no longer storing the OID embedded in docsql .xml filename
|
---|
[32536] | 105 | }
|
---|
| 106 |
|
---|
| 107 | my $process_mode_list =
|
---|
| 108 | [ { 'name' => "meta_only",
|
---|
[32537] | 109 | 'desc' => "{GreenstoneSQLPlug.process_mode.meta_only}" },
|
---|
[32536] | 110 | { 'name' => "text_only",
|
---|
[32537] | 111 | 'desc' => "{GreenstoneSQLPlug.process_mode.text_only}" },
|
---|
[32536] | 112 | { 'name' => "all",
|
---|
[32537] | 113 | 'desc' => "{GreenstoneSQLPlug.process_mode.all}" } ];
|
---|
[32536] | 114 |
|
---|
| 115 | my $arguments =
|
---|
| 116 | [ { 'name' => "process_exp",
|
---|
| 117 | 'desc' => "{BaseImporter.process_exp}",
|
---|
| 118 | 'type' => "regexp",
|
---|
| 119 | 'deft' => &get_default_process_exp(),
|
---|
| 120 | 'reqd' => "no" },
|
---|
[32541] | 121 | { 'name' => "process_mode",
|
---|
| 122 | 'desc' => "{GreenstoneSQLPlug.process_mode}",
|
---|
| 123 | 'type' => "enum",
|
---|
| 124 | 'list' => $process_mode_list,
|
---|
| 125 | 'deft' => "all",
|
---|
| 126 | 'reqd' => "no"},
|
---|
| 127 | { 'name' => "db_driver",
|
---|
| 128 | 'desc' => "{GreenstoneSQLPlug.db_driver}",
|
---|
| 129 | 'type' => "string",
|
---|
| 130 | 'deft' => "mysql",
|
---|
| 131 | 'reqd' => "yes"},
|
---|
| 132 | { 'name' => "db_client_user",
|
---|
| 133 | 'desc' => "{GreenstoneSQLPlug.db_client_user}",
|
---|
| 134 | 'type' => "string",
|
---|
| 135 | 'deft' => "root",
|
---|
| 136 | 'reqd' => "yes"},
|
---|
| 137 | { 'name' => "db_client_pwd",
|
---|
| 138 | 'desc' => "{GreenstoneSQLPlug.db_client_pwd}",
|
---|
| 139 | 'type' => "string",
|
---|
| 140 | 'deft' => "",
|
---|
| 141 | 'reqd' => "yes"}, # pwd required?
|
---|
| 142 | { 'name' => "db_host",
|
---|
| 143 | 'desc' => "{GreenstoneSQLPlug.db_host}",
|
---|
| 144 | 'type' => "string",
|
---|
| 145 | 'deft' => "127.0.0.1",
|
---|
| 146 | 'reqd' => "yes"},
|
---|
[32536] | 147 | ];
|
---|
| 148 |
|
---|
| 149 | my $options = { 'name' => "GreenstoneSQLPlugin",
|
---|
| 150 | 'desc' => "{GreenstoneSQLPlugin.desc}",
|
---|
| 151 | 'abstract' => "no",
|
---|
| 152 | 'inherits' => "yes",
|
---|
| 153 | 'args' => $arguments };
|
---|
| 154 |
|
---|
| 155 |
|
---|
| 156 | # TODO: For on cancel, add a SIGTERM handler or so to call end()
|
---|
| 157 | # or to explicitly call gs_sql->close_connection if $gs_sql def
|
---|
| 158 |
|
---|
| 159 | sub new {
|
---|
| 160 | my ($class) = shift (@_);
|
---|
| 161 | my ($pluginlist,$inputargs,$hashArgOptLists) = @_;
|
---|
| 162 | push(@$pluginlist, $class);
|
---|
| 163 |
|
---|
| 164 | push(@{$hashArgOptLists->{"ArgList"}},@{$arguments});
|
---|
| 165 | push(@{$hashArgOptLists->{"OptList"}},$options);
|
---|
| 166 |
|
---|
| 167 | my $self = new GreenstoneXMLPlugin($pluginlist, $inputargs, $hashArgOptLists);
|
---|
| 168 |
|
---|
| 169 |
|
---|
| 170 | #return bless $self, $class;
|
---|
| 171 | $self = bless $self, $class;
|
---|
| 172 | if ($self->{'info_only'}) {
|
---|
| 173 | # If running pluginfo, we don't need to go further.
|
---|
| 174 | return $self;
|
---|
| 175 | }
|
---|
| 176 |
|
---|
| 177 | # do anything else that needs to be done here when not pluginfo
|
---|
| 178 |
|
---|
| 179 | return $self;
|
---|
| 180 | }
|
---|
| 181 |
|
---|
[32563] | 182 | # This is called once if removeold is set with import.pl. Most plugins will do
|
---|
| 183 | # nothing but if a plugin does any stuff outside of creating doc obj, then
|
---|
| 184 | # it may need to clear something.
|
---|
| 185 | # In the case of GreenstoneSQL plugs: this is the first time we have a chance
|
---|
| 186 | # to purge the tables of the current collection from the current site's database
|
---|
| 187 | sub remove_all {
|
---|
| 188 | my $self = shift (@_);
|
---|
| 189 | my ($pluginfo, $base_dir, $processor, $maxdocs) = @_;
|
---|
| 190 |
|
---|
| 191 | print STDERR " Building with removeold option set, so deleting current collection's tables if they exist\n" if($self->{'verbosity'});
|
---|
| 192 |
|
---|
| 193 | # if we're in here, we'd already have run 'use database <site_name>;' during sub init()
|
---|
| 194 | # so we can go ahead and delete the collection's tables
|
---|
| 195 | my $gs_sql = $self->{'gs_sql'};
|
---|
| 196 | $gs_sql->delete_collection_tables(); # will delete them if they exist
|
---|
| 197 |
|
---|
| 198 | # and recreate tables? No. Tables' existence is ensured in GreenstoneSQLPlugout::begin()
|
---|
| 199 | my $proc_mode = $self->{'process_mode'};
|
---|
| 200 | if($proc_mode ne "text_only") {
|
---|
| 201 | $gs_sql->ensure_meta_table_exists();
|
---|
| 202 | }
|
---|
| 203 | if($proc_mode ne "meta_only") {
|
---|
| 204 | $gs_sql->ensure_fulltxt_table_exists();
|
---|
| 205 | }
|
---|
| 206 | }
|
---|
| 207 |
|
---|
| 208 | # This is called per document for docs that have been deleted from the
|
---|
| 209 | # collection. Most plugins will do nothing
|
---|
| 210 | # but if a plugin does any stuff outside of creating doc obj, then it may need
|
---|
| 211 | # to clear something.
|
---|
| 212 | # remove the doc(s) denoted by oids from GS SQL db
|
---|
| 213 | # This takes care of incremental deletes (docs marked D by ArchivesInfPlugin when building
|
---|
| 214 | # incrementally) as well as cases of "Non-icremental Delete", see ArchivesInfPlugin.pm
|
---|
| 215 | sub remove_one {
|
---|
| 216 | my $self = shift (@_);
|
---|
| 217 |
|
---|
| 218 | my ($file, $oids, $archivedir) = @_;
|
---|
| 219 |
|
---|
| 220 | print STDERR "@@@ IN SQLPLUG::REMOVE_ONE: $file\n";
|
---|
| 221 |
|
---|
| 222 | #return undef unless $self->can_process_this_file($file); # NO, DON'T DO THIS:
|
---|
| 223 | # WE DON'T CARE IF IT'S AN IMAGE FILE THAT WAS DELETED.
|
---|
| 224 | # WE CARE ABOUT REMOVING THE DOCOID OF THAT IMAGE FILE FROM THE DB
|
---|
| 225 |
|
---|
| 226 | print STDERR "*****************************\nAsked to remove_one oid\n***********************\n";
|
---|
| 227 |
|
---|
| 228 | my $gs_sql = $self->{'gs_sql'} || return 0; # couldn't make the connection or no db etc
|
---|
| 229 | if(scalar @$oids > 1) {
|
---|
| 230 | print STDERR "TODO: We now have reason to optimise GreenstoneSQLPlugin::remove_one() by using prepare and execute.\n";
|
---|
| 231 | }
|
---|
| 232 |
|
---|
| 233 | my $proc_mode = $self->{'process_mode'};
|
---|
| 234 | foreach my $oid (@$oids) {
|
---|
| 235 | if($proc_mode eq "all" || $proc_mode eq "meta_only") {
|
---|
| 236 | print STDERR "@@@@@@@@ Deleting $oid from meta table\n" if $self->{'verbosity'} > 2;
|
---|
| 237 | $gs_sql->delete_recs_from_metatable_with_docid($oid);
|
---|
| 238 | }
|
---|
| 239 | if($proc_mode eq "all" || $proc_mode eq "text_only") {
|
---|
| 240 | print STDERR "@@@@@@@@ Deleting $oid from fulltxt table\n" if $self->{'verbosity'} > 2;
|
---|
| 241 | $gs_sql->delete_recs_from_texttable_with_docid($oid);
|
---|
| 242 | }
|
---|
| 243 | }
|
---|
| 244 | return 1;
|
---|
| 245 | }
|
---|
| 246 |
|
---|
| 247 |
|
---|
[32542] | 248 | sub xml_start_tag {
|
---|
| 249 | my $self = shift(@_);
|
---|
| 250 | my ($expat, $element) = @_;
|
---|
[32536] | 251 |
|
---|
[32542] | 252 | my $outhandle = $self->{'outhandle'};
|
---|
| 253 |
|
---|
| 254 | $self->{'element'} = $element;
|
---|
| 255 | if ($element eq "Archive") { # docsql.xml files contain a OID attribute on Archive element
|
---|
| 256 | # the element's attributes are in %_ as per ReadXMLFile::xml_start_tag() (while $_
|
---|
| 257 | # contains the tag)
|
---|
| 258 |
|
---|
| 259 | # Don't access %_{'docoid'} directly: keep getting a warning message to
|
---|
| 260 | # use $_{'docoid'} for scalar contexts, but %_ is the element's attr hashmap
|
---|
| 261 | # whereas $_ has the tag info. So we don't want to do $_{'docoid'}.
|
---|
| 262 | my %attr_hash = %_; # right way, see OAIPlugin.pm
|
---|
[32555] | 263 | $self->{'doc_oid'} = $attr_hash{'docoid'};
|
---|
[32563] | 264 | ##print STDERR "XXXXXXXXXXXXXX in SQLPlugin::xml_start_tag()\n";
|
---|
[32542] | 265 | print $outhandle "Extracted OID from docsql.xml: ".$self->{'doc_oid'}."\n"
|
---|
[32544] | 266 | if $self->{'verbosity'} > 2;
|
---|
[32542] | 267 |
|
---|
| 268 | }
|
---|
| 269 | else { # let superclass GreenstoneXMLPlugin continue to process <Section> and <Metadata> elements
|
---|
| 270 | $self->SUPER::xml_start_tag(@_);
|
---|
| 271 | }
|
---|
| 272 | }
|
---|
| 273 |
|
---|
[32555] | 274 | # TODO Q: Why are there 4 passes when we're only indexing at doc and section level (2 passes)? What's the dummy pass, why is there a pass for infodb?
|
---|
[32536] | 275 |
|
---|
[32563] | 276 | # We should only ever get here during the buildcol.pl phase
|
---|
[32536] | 277 | # At the end of superclass GreenstoneXMLPlugin.pm's close_document() method,
|
---|
| 278 | # the doc_obj in memory is processed (indexed) and then made undef.
|
---|
| 279 | # So we have to work with doc_obj before superclass close_document() is finished.
|
---|
| 280 | sub close_document {
|
---|
| 281 | my $self = shift(@_);
|
---|
[32555] | 282 |
|
---|
[32563] | 283 | ##print STDERR "XXXXXXXXX in SQLPlugin::close_doc()\n";
|
---|
[32536] | 284 |
|
---|
[32563] | 285 | my $gs_sql = $self->{'gs_sql'};
|
---|
[32555] | 286 |
|
---|
[32536] | 287 | my $outhandle = $self->{'outhandle'};
|
---|
[32544] | 288 | my $doc_obj = $self->{'doc_obj'};
|
---|
[32536] | 289 |
|
---|
[32542] | 290 | my $oid = $self->{'doc_oid'}; # we stored current doc's OID during sub xml_start_tag()
|
---|
[32555] | 291 | my $proc_mode = $self->{'process_mode'};
|
---|
| 292 |
|
---|
[32538] | 293 | # For now, we have access to doc_obj (until just before super::close_document() terminates)
|
---|
[32555] | 294 |
|
---|
[32543] | 295 | # no need to call $self->{'doc_obj'}->set_OID($oid);
|
---|
| 296 | # because either the OID is stored in the SQL db as meta 'Identifier' alongside other metadata
|
---|
| 297 | # or it's stored in the doc.xml as metadata 'Identifier' alongside other metadata
|
---|
| 298 | # Either way, Identifier meta will be read into the docobj automatically with other meta.
|
---|
[32563] | 299 |
|
---|
| 300 | print STDERR " GreenstoneSQLPlugin processing doc $oid (reading into docobj from SQL db)\n"
|
---|
| 301 | if $self->{'verbosity'} > 0;
|
---|
[32555] | 302 |
|
---|
[32563] | 303 | if($proc_mode eq "all" || $proc_mode eq "meta_only") {
|
---|
| 304 | # read in meta for the collection (i.e. select * from <col>_metadata table
|
---|
[32555] | 305 |
|
---|
[32563] | 306 | my $sth = $gs_sql->select_from_metatable_matching_docid($oid);
|
---|
| 307 | print $outhandle "### SQL select stmt: ".$sth->{'Statement'}."\n"
|
---|
| 308 | if $self->{'verbosity'} > 2;
|
---|
[32555] | 309 |
|
---|
[32563] | 310 | print $outhandle "----------SQL DB contains meta-----------\n" if $self->{'verbosity'} > 2;
|
---|
| 311 | # https://www.effectiveperlprogramming.com/2010/07/set-custom-dbi-error-handlers/
|
---|
| 312 | while( my @row = $sth->fetchrow_array() ) {
|
---|
| 313 | #print $outhandle "row: @row\n";
|
---|
| 314 | my ($primary_key, $did, $sid, $metaname, $metaval) = @row;
|
---|
[32555] | 315 |
|
---|
[32563] | 316 | # get rid of the artificial "root" introduced in section id when saving to sql db
|
---|
| 317 | $sid =~ s@^root@@;
|
---|
| 318 | $sid = $doc_obj->get_top_section() unless $sid;
|
---|
| 319 | print $outhandle "### did: $did, sid: |$sid|, meta: $metaname, val: $metaval\n"
|
---|
[32544] | 320 | if $self->{'verbosity'} > 2;
|
---|
[32536] | 321 |
|
---|
[32563] | 322 | # TODO: we accessed the db in utf8 mode, so, we can call doc_obj->add_utf8_meta directly:
|
---|
| 323 | $doc_obj->add_utf8_metadata($sid, $metaname, &docprint::unescape_text($metaval));
|
---|
[32536] | 324 | }
|
---|
[32563] | 325 | print $outhandle "----------FIN READING DOC's META FROM SQL DB------------\n"
|
---|
| 326 | if $self->{'verbosity'} > 2;
|
---|
| 327 | }
|
---|
| 328 |
|
---|
| 329 | if($proc_mode eq "all" || $proc_mode eq "text_only") {
|
---|
| 330 | # read in fulltxt for the collection (i.e. select * from <col>_fulltxt table
|
---|
[32536] | 331 |
|
---|
[32563] | 332 | my $fulltxt_table = $gs_sql->get_fulltext_table_name();
|
---|
[32536] | 333 |
|
---|
[32563] | 334 |
|
---|
| 335 | my $sth = $gs_sql->select_from_texttable_matching_docid($oid);
|
---|
| 336 | print $outhandle "### stmt: ".$sth->{'Statement'}."\n" if $self->{'verbosity'} > 2;
|
---|
| 337 |
|
---|
| 338 | print $outhandle "----------\nSQL DB contains txt entries for-----------\n"
|
---|
| 339 | if $self->{'verbosity'} > 2;
|
---|
| 340 | while( my ($primary_key, $did, $sid, $text) = $sth->fetchrow_array() ) {
|
---|
[32555] | 341 |
|
---|
[32563] | 342 | # get rid of the artificial "root" introduced in section id when saving to sql db
|
---|
| 343 | #$sid =~ s@^root@@;
|
---|
| 344 | $sid = $doc_obj->get_top_section() if ($sid eq "root");
|
---|
| 345 | print $outhandle "### did: $did, sid: |$sid|, fulltext: <TXT>\n"
|
---|
[32544] | 346 | if $self->{'verbosity'} > 2;
|
---|
[32563] | 347 |
|
---|
| 348 | # TODO - pass by ref?
|
---|
| 349 | # TODO: we accessed the db in utf8 mode, so, we can call doc_obj->add_utf8_text directly:
|
---|
| 350 | $doc_obj->add_utf8_text($sid, &docprint::unescape_text($text));
|
---|
| 351 | }
|
---|
| 352 | print $outhandle "----------FIN READING DOC's TXT FROM SQL DB------------\n"
|
---|
| 353 | if $self->{'verbosity'} > 2;
|
---|
| 354 | }
|
---|
[32536] | 355 |
|
---|
[32563] | 356 | # done reading into docobj from SQL db
|
---|
| 357 |
|
---|
[32536] | 358 | # don't forget to clean up on close() in superclass
|
---|
| 359 | # It will get the doc_obj indexed then make it undef
|
---|
| 360 | $self->SUPER::close_document(@_);
|
---|
| 361 | }
|
---|
| 362 |
|
---|
| 363 |
|
---|
[32563] | 364 | # TODO: only want to work with sql db if buildcol.pl. Unfortunately, also runs on import.pl.
|
---|
| 365 | # During import, the GS SQL Plugin is called before the GS SQL Plugout with undesirable side
|
---|
| 366 | # effect that if the db doesn't exist, gssql::use_db() fails, as it won't create db.
|
---|
[32544] | 367 |
|
---|
[32563] | 368 | # GS SQL Plugin::init() (and deinit()) is called by import.pl and also by buildcol.pl
|
---|
| 369 | # This means it connects and deconnects during import.pl as well. This is okay
|
---|
| 370 | # as removeold, which should drop the collection tables, happens during the import phase
|
---|
| 371 | # and therefore also requires a db connection.
|
---|
| 372 | # TODO: Eventually can try moving get_gssql_instance into gssql.pm? That way both GS SQL Plugin
|
---|
| 373 | # and Plugout would be using one connection during import.pl phase when both plugs exist.
|
---|
| 374 |
|
---|
| 375 | # Call init() not begin() because there can be multiple plugin passes and begin() called for
|
---|
| 376 | # each pass (one for doc level and another for section level indexing), whereas init() should
|
---|
| 377 | # be called before any and all passes.
|
---|
| 378 | # This way, we can connect to the SQL database once per buildcol run.
|
---|
| 379 | sub init {
|
---|
| 380 | my ($self) = shift (@_);
|
---|
| 381 | ##print STDERR "@@@@@@@@@@ INIT CALLED\n";
|
---|
[32544] | 382 |
|
---|
[32563] | 383 | $self->SUPER::init(@_); # super (GreenstoneXMLPlugin) will not yet be trying to read from doc.xml (docsql .xml) files in init().
|
---|
[32544] | 384 |
|
---|
[32541] | 385 | ####################
|
---|
[32536] | 386 | # print "@@@ SITE NAME: ". $self->{'site_name'} . "\n" if defined $self->{'site_name'};
|
---|
| 387 | # print "@@@ COLL NAME: ". $ENV{'GSDLCOLLECTION'} . "\n";
|
---|
[32541] | 388 |
|
---|
| 389 | # print STDERR "@@@@ db_pwd: " . $self->{'db_client_pwd'} . "\n";
|
---|
| 390 | # print STDERR "@@@@ user: " . $self->{'db_client_user'} . "\n";
|
---|
| 391 | # print STDERR "@@@@ db_host: " . $self->{'db_host'} . "\n";
|
---|
| 392 | # print STDERR "@@@@ db_driver: " . $self->{'db_driver'} . "\n";
|
---|
| 393 | ####################
|
---|
[32559] | 394 |
|
---|
| 395 | # create gssql object.
|
---|
| 396 | # collection name will be used for naming tables (site name will be used for naming database)
|
---|
[32536] | 397 | my $gs_sql = new gssql({
|
---|
[32560] | 398 | 'collection_name' => $ENV{'GSDLCOLLECTION'},
|
---|
| 399 | 'verbosity' => $self->{'verbosity'}
|
---|
[32559] | 400 | });
|
---|
[32536] | 401 |
|
---|
| 402 | # try connecting to the mysql db, if that fails it will die
|
---|
| 403 | if(!$gs_sql->connect_to_db({
|
---|
| 404 | 'db_driver' => $self->{'db_driver'},
|
---|
| 405 | 'db_client_user' => $self->{'db_client_user'},
|
---|
| 406 | 'db_client_pwd' => $self->{'db_client_pwd'},
|
---|
| 407 | 'db_host' => $self->{'db_host'}
|
---|
| 408 | })
|
---|
| 409 | )
|
---|
| 410 | {
|
---|
| 411 | # This is fatal for the plugout, let's terminate here
|
---|
| 412 | # PrintError would already have displayed the warning message on connection fail
|
---|
| 413 | die("Could not connect to db. Can't proceed.\n");
|
---|
| 414 | }
|
---|
| 415 |
|
---|
[32541] | 416 | my $db_name = $self->{'site_name'} || "greenstone2"; # one database per GS3 site, for GS2 the db is called greenstone2
|
---|
[32536] | 417 |
|
---|
[32563] | 418 | # Attempt to use the db, create it if it doesn't exist (but don't create the tables yet)
|
---|
| 419 | # Bail if we can't use the database
|
---|
[32536] | 420 | if(!$gs_sql->use_db($db_name)) {
|
---|
| 421 |
|
---|
| 422 | # This is fatal for the plugout, let's terminate here after disconnecting again
|
---|
| 423 | # PrintError would already have displayed the warning message on load fail
|
---|
| 424 | $gs_sql->disconnect_from_db()
|
---|
[32541] | 425 | || warn("Unable to disconnect from database.\n");
|
---|
[32536] | 426 | die("Could not use db $db_name. Can't proceed.\n");
|
---|
| 427 | }
|
---|
| 428 |
|
---|
[32563] | 429 |
|
---|
[32536] | 430 | # store db handle now that we're connected
|
---|
[32563] | 431 | $self->{'gs_sql'} = $gs_sql;
|
---|
[32536] | 432 | }
|
---|
| 433 |
|
---|
[32563] | 434 |
|
---|
[32538] | 435 | # This method also runs on import.pl if gs_sql has a value. But we just want to run it on buildcol
|
---|
[32536] | 436 | # Call deinit() not end() because there can be multiple plugin passes:
|
---|
| 437 | # one for doc level and another for section level indexing
|
---|
| 438 | # and deinit() should be called before all passes
|
---|
[32538] | 439 | # This way, we can close the SQL database once per buildcol run.
|
---|
[32536] | 440 | sub deinit {
|
---|
| 441 | my ($self) = shift (@_);
|
---|
[32544] | 442 |
|
---|
[32563] | 443 | ##print STDERR "@@@@@@@@@@ GreenstoneSQLPlugin::DEINIT CALLED\n";
|
---|
[32544] | 444 |
|
---|
[32563] | 445 | if($self->{'gs_sql'}) { # only want to work with sql db if buildcol.pl, gs_sql won't have
|
---|
[32544] | 446 | # a value except during buildcol, so when processor =~ m/buildproc$/.
|
---|
[32563] | 447 | $self->{'gs_sql'}->disconnect_from_db()
|
---|
[32536] | 448 | || warn("Unable to disconnect from database " . $self->{'site_name'} . "\n");
|
---|
[32544] | 449 |
|
---|
[32563] | 450 | # explicitly delete gs_sql key (setting key to undef has a different meaning from deleting)
|
---|
| 451 | # so all future use has to make the connection again
|
---|
| 452 | delete $self->{'gs_sql'};
|
---|
[32536] | 453 | }
|
---|
[32544] | 454 |
|
---|
[32536] | 455 | $self->SUPER::deinit(@_);
|
---|
| 456 | }
|
---|
| 457 |
|
---|
[32544] | 458 |
|
---|
| 459 |
|
---|
| 460 |
|
---|