misc/migration_tools/remove_unused_authorities.pl

   1 #!/usr/bin/perl
   2
   3 #script to administer Authorities without biblio
   4
   5 # Copyright 2009 BibLibre
   6 # written 2009-05-04 by paul dot poulain at biblibre.com
   7 #
   8 # This file is part of Koha.
   9 #
  10 # Koha is free software; you can redistribute it and/or modify it
  11 # under the terms of the GNU General Public License as published by
  12 # the Free Software Foundation; either version 3 of the License, or
  13 # (at your option) any later version.
  14 #
  15 # Koha is distributed in the hope that it will be useful, but
  16 # 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 Koha; if not, see <http://www.gnu.org/licenses>.
  22
  23 use strict;
  24 use warnings;
  25
  26 use C4::Context;
  27 use C4::AuthoritiesMarc;
  28 use Getopt::Long;
  29
  30 my @authtypes;
  31 my $want_help = 0;
  32 my $test = 0;
  33 GetOptions(
  34     'aut|authtypecode:s' => \@authtypes,
  35     't|test'             => \$test,
  36     'h|help'             => \$want_help
  37 );
  38
  39 if ($want_help) {
  40     print_usage();
  41     exit 0;
  42 }
  43
  44 if ($test) {
  45     print "testing only, authorities will not be deleted.\n";
  46 }
  47
  48 my $dbh=C4::Context->dbh;
  49 my $thresholdmin=0;
  50 my $thresholdmax=0;
  51 my @results;
  52 # prepare the request to retrieve all authorities of the requested types
  53 my $rqsql = "SELECT * from auth_header where 1";
  54 $rqsql .= " AND authtypecode IN (".join(",",map{$dbh->quote($_)}@authtypes).")" if @authtypes;
  55 my $rqselect = $dbh->prepare($rqsql);
  56 $|=1;
  57
  58 $rqselect->execute;
  59 my $counter=0;
  60 my $totdeleted=0;
  61 my $totundeleted=0;
  62 while (my $data=$rqselect->fetchrow_hashref){
  63     my $query;
  64     $query= "an=".$data->{'authid'};
  65     # search for biblios mapped
  66     my ($err,$res,$used) = C4::Search::SimpleSearch($query,0,10);
  67     if (defined $err) {
  68         warn "error: $err on search $query\n";
  69         next;
  70     }
  71     print ".";
  72     print "$counter\n" unless $counter++ % 100;
  73     # if found, delete, otherwise, just count
  74     if ($used>=$thresholdmin and $used<=$thresholdmax){
  75         DelAuthority($data->{'authid'}) unless $test;
  76         $totdeleted++;
  77     } else {
  78         $totundeleted++;
  79     }
  80 }
  81
  82 print "$counter authorities parsed, $totdeleted deleted and $totundeleted unchanged because used\n";
  83
  84
  85 sub print_usage {
  86     print <<_USAGE_;
  87 $0: Remove unused authority records
  88
  89 This script removes authority records that do not have any biblio
  90 records attached to them.
  91
  92 If the --aut option is supplied, only authority records of that
  93 particular type will be checked for usage.  --aut can be repeated.
  94
  95 If --aut is not supplied, all authority records will be checked.
  96
  97 Use --test to perform a test run.  This script does not ask the
  98 operator to confirm the deletion of each authority record.
  99
 100 parameters
 101     --aut|authtypecode TYPE       the list of authtypes to check
 102     --test or -t                  test mode, don't delete really, just count
 103     --help or -h                  show this message.
 104
 105 _USAGE_
 106 }