| 1 | ###########################################################################
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| 2 | #
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| 3 | # lucenebuilder.pm -- perl wrapper for building index with Lucene
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| 4 | # A component of the Greenstone digital library software
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| 5 | # from the New Zealand Digital Library Project at the
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| 6 | # University of Waikato, New Zealand.
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| 7 | #
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| 8 | # Copyright (C) 1999 New Zealand Digital Library Project
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| 9 | #
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| 10 | # This program is free software; you can redistribute it and/or modify
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| 11 | # it under the terms of the GNU General Public License as published by
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| 12 | # the Free Software Foundation; either version 2 of the License, or
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| 13 | # (at your option) any later version.
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| 14 | #
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| 15 | # This program is distributed in the hope that it will be useful,
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| 16 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 17 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 18 | # GNU General Public License for more details.
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| 19 | #
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| 20 | # You should have received a copy of the GNU General Public License
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| 21 | # along with this program; if not, write to the Free Software
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| 22 | # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 23 | #
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| 24 | ###########################################################################
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| 25 |
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| 26 | ###########################################################################
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| 27 | # /*
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| 28 | # * @version 1.0 ?
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| 29 | # * @version 2.0 Incremental building assistance added, including
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| 30 | # * remove_document_from_database which implements the granddad's
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| 31 | # * empty function to call the lucene_passes.pl and full_lucene_passes_exe
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| 32 | # * so there is one place in the code that works out where the
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| 33 | # * perl script is. John Rowe
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| 34 | # *
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| 35 | # * @author John Rowe, DL Consulting Ltd.
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| 36 | # */
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| 37 | ###########################################################################
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| 38 |
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| 39 | package lucenebuilder;
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| 40 |
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| 41 | # Use same basic XML structure setup by mgppbuilder/mgppbuildproc
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| 42 |
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| 43 | use mgppbuilder;
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| 44 | use strict; no strict 'refs';
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| 45 |
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| 46 |
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| 47 | sub BEGIN {
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| 48 | @lucenebuilder::ISA = ('mgppbuilder');
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| 49 | }
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| 50 |
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| 51 | # /**
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| 52 | # * @author John Thompson, DL Consulting Ltd.
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| 53 | # */
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| 54 | sub new {
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| 55 | my $class = shift(@_);
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| 56 | my $self = new mgppbuilder (@_);
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| 57 | $self = bless $self, $class;
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| 58 |
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| 59 | $self->{'buildtype'} = "lucene";
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| 60 |
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| 61 | # Do we need to put exe on the end?
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| 62 | my $exe = &util::get_os_exe ();
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| 63 | my $scriptdir = "$ENV{'GSDLHOME'}/bin/script";
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| 64 |
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| 65 | # So where is lucene_passes.pl anyway?
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| 66 | my $lucene_passes_script = &util::filename_cat($scriptdir, "lucene_passes.pl");
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| 67 |
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| 68 | # So tack perl on the beginning to ensure execution
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| 69 | $self->{'full_lucene_passes'} = "$lucene_passes_script";
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| 70 | if ($exe eq ".exe")
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| 71 | {
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| 72 | $self->{'full_lucene_passes_exe'} = "perl$exe \"$lucene_passes_script\"";
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| 73 | }
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| 74 | else
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| 75 | {
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| 76 | $self->{'full_lucene_passes_exe'} = "perl -S \"$lucene_passes_script\"";
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| 77 | }
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| 78 |
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| 79 | return $self;
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| 80 | }
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| 81 | # /** new() **/
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| 82 |
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| 83 | # lucene has none of these options
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| 84 | sub generate_index_options {
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| 85 | my $self = shift (@_);
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| 86 |
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| 87 | $self->{'casefold'} = 0;
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| 88 | $self->{'stem'} = 0;
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| 89 | $self->{'accentfold'} = 0;
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| 90 | $self->{'stemindexes'} = 0;
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| 91 | }
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| 92 |
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| 93 | sub default_buildproc {
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| 94 | my $self = shift (@_);
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| 95 |
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| 96 | return "lucenebuildproc";
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| 97 | }
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| 98 |
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| 99 | # this writes a nice version of the text docs
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| 100 | sub compress_text
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| 101 | {
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| 102 | my $self = shift (@_);
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| 103 | # we don't do anything if we don't want compressed text
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| 104 | return if $self->{'no_text'};
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| 105 |
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| 106 | my ($textindex) = @_;
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| 107 | my $outhandle = $self->{'outhandle'};
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| 108 | print STDERR "Saving the document text\n";
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| 109 | # the text directory
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| 110 | my $text_dir = &util::filename_cat($self->{'build_dir'}, "text");
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| 111 | my $build_dir = &util::filename_cat($self->{'build_dir'},"");
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| 112 | &util::mk_all_dir ($text_dir);
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| 113 |
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| 114 | my $osextra = "";
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| 115 | if ($ENV{'GSDLOS'} =~ /^windows$/i)
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| 116 | {
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| 117 | $text_dir =~ s@/@\\@g;
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| 118 | }
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| 119 | else
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| 120 | {
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| 121 | if ($outhandle ne "STDERR")
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| 122 | {
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| 123 | # so lucene_passes doesn't print to stderr if we redirect output
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| 124 | $osextra .= " 2>/dev/null";
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| 125 | }
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| 126 | }
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| 127 |
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| 128 | # get any os specific stuff
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| 129 | my $scriptdir = "$ENV{'GSDLHOME'}/bin/script";
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| 130 |
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| 131 | # Find the perl script to call to run lucene
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| 132 | my $full_lucene_passes = $self->{'full_lucene_passes'};
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| 133 | my $full_lucene_passes_exe = $self->{'full_lucene_passes_exe'};
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| 134 |
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| 135 | my $lucene_passes_sections = "Doc";
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| 136 |
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| 137 | my ($handle);
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| 138 |
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| 139 | if ($self->{'debug'})
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| 140 | {
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| 141 | $handle = *STDOUT;
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| 142 | }
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| 143 | else
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| 144 | {
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| 145 | print STDERR "Full Path: $full_lucene_passes\n";
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| 146 | print STDERR "Executable: $full_lucene_passes_exe\n";
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| 147 | print STDERR "Sections: $lucene_passes_sections\n";
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| 148 | print STDERR "Build Dir: $build_dir\n";
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| 149 | print STDERR "Cmd: $full_lucene_passes_exe text $lucene_passes_sections \"$build_dir\" \"dummy\" $osextra\n";
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| 150 | if (!-e "$full_lucene_passes" ||
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| 151 | !open($handle, "| $full_lucene_passes_exe text $lucene_passes_sections \"$build_dir\" \"dummy\" $osextra"))
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| 152 | {
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| 153 | print STDERR "<FatalError name='NoRunLucenePasses'/>\n</Stage>\n" if $self->{'gli'};
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| 154 | die "lucenebuilder::build_index - couldn't run $full_lucene_passes_exe\n";
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| 155 | }
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| 156 | }
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| 157 |
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| 158 | # stored text is always Doc and Sec levels
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| 159 | my $levels = { 'document' => 1, 'section' => 1 };
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| 160 | # always do database at section level
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| 161 | my $db_level = "section";
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| 162 |
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| 163 | # set up the document processr
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| 164 | $self->{'buildproc'}->set_output_handle ($handle);
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| 165 | $self->{'buildproc'}->set_mode ('text');
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| 166 | $self->{'buildproc'}->set_index ($textindex);
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| 167 | $self->{'buildproc'}->set_indexing_text (0);
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| 168 | $self->{'buildproc'}->set_indexfieldmap ($self->{'indexfieldmap'});
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| 169 | $self->{'buildproc'}->set_levels ($levels);
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| 170 | $self->{'buildproc'}->set_db_level ($db_level);
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| 171 | $self->{'buildproc'}->reset();
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| 172 | &plugin::begin($self->{'pluginfo'}, $self->{'source_dir'},
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| 173 | $self->{'buildproc'}, $self->{'maxdocs'});
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| 174 | &plugin::read ($self->{'pluginfo'}, $self->{'source_dir'},
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| 175 | "", {}, $self->{'buildproc'}, $self->{'maxdocs'}, 0, $self->{'gli'});
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| 176 | &plugin::end($self->{'pluginfo'});
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| 177 | close ($handle) unless $self->{'debug'};
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| 178 | $self->print_stats();
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| 179 |
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| 180 | print STDERR "</Stage>\n" if $self->{'gli'};
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| 181 | }
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| 182 |
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| 183 | sub build_indexes {
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| 184 | my $self = shift (@_);
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| 185 | my ($indexname) = @_;
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| 186 | my $outhandle = $self->{'outhandle'};
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| 187 |
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| 188 | my $indexes = [];
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| 189 | if (defined $indexname && $indexname =~ /\w/) {
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| 190 | push @$indexes, $indexname;
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| 191 | } else {
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| 192 | $indexes = $self->{'collect_cfg'}->{'indexes'};
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| 193 | }
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| 194 |
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| 195 | # create the mapping between the index descriptions
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| 196 | # and their directory names (includes subcolls and langs)
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| 197 | $self->{'index_mapping'} = $self->create_index_mapping ($indexes);
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| 198 |
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| 199 | # build each of the indexes
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| 200 | foreach my $index (@$indexes) {
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| 201 | if ($self->want_built($index)) {
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| 202 |
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| 203 | my $idx = $self->{'index_mapping'}->{$index};
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| 204 | foreach my $level (keys %{$self->{'levels'}}) {
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| 205 | next if $level =~ /paragraph/; # we don't do para indexing
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| 206 | my ($pindex) = $level =~ /^(.)/;
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| 207 | # should probably check that new name with level
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| 208 | # is unique ... but currently (with doc sec and para)
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| 209 | # each has unique first letter.
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| 210 | $self->{'index_mapping'}->{$index} = $pindex.$idx;
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| 211 |
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| 212 | my $llevel = $mgppbuilder::level_map{$level};
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| 213 | print $outhandle "\n*** building index $index at level $llevel in subdirectory " .
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| 214 | "$self->{'index_mapping'}->{$index}\n" if ($self->{'verbosity'} >= 1);
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| 215 | print STDERR "<Stage name='Index' source='$index' level=$llevel>\n" if $self->{'gli'};
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| 216 |
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| 217 | $self->build_index($index,$llevel);
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| 218 | }
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| 219 | $self->{'index_mapping'}->{$index} = $idx;
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| 220 |
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| 221 | } else {
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| 222 | print $outhandle "\n*** ignoring index $index\n" if ($self->{'verbosity'} >= 1);
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| 223 | }
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| 224 | }
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| 225 |
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| 226 | #define the final field lists
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| 227 | $self->make_final_field_list();
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| 228 | }
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| 229 |
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| 230 |
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| 231 | sub build_index {
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| 232 | my $self = shift (@_);
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| 233 | my ($index,$llevel) = @_;
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| 234 | my $outhandle = $self->{'outhandle'};
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| 235 | my $build_dir = $self->{'build_dir'};
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| 236 |
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| 237 | # get the full index directory path and make sure it exists
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| 238 | my $indexdir = $self->{'index_mapping'}->{$index};
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| 239 | &util::mk_all_dir (&util::filename_cat($build_dir, $indexdir));
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| 240 |
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| 241 | # get any os specific stuff
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| 242 | my $exedir = "$ENV{'GSDLHOME'}/bin/$ENV{'GSDLOS'}";
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| 243 | my $scriptdir = "$ENV{'GSDLHOME'}/bin/script";
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| 244 |
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| 245 | # Find the perl script to call to run lucene
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| 246 | my $full_lucene_passes = $self->{'full_lucene_passes'};
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| 247 | my $full_lucene_passes_exe = $self->{'full_lucene_passes_exe'};
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| 248 |
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| 249 | # define the section names for lucenepasses
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| 250 | # define the section names and possibly the doc name for lucenepasses
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| 251 | my $lucene_passes_sections = $llevel;
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| 252 |
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| 253 | my $opt_create_index = ($self->{'keepold'}) ? "" : "-create";
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| 254 |
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| 255 | my $osextra = "";
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| 256 | if ($ENV{'GSDLOS'} =~ /^windows$/i) {
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| 257 | $build_dir =~ s@/@\\@g;
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| 258 | } else {
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| 259 | if ($outhandle ne "STDERR") {
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| 260 | # so lucene_passes doesn't print to stderr if we redirect output
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| 261 | $osextra .= " 2>/dev/null";
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| 262 | }
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| 263 | }
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| 264 |
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| 265 | # get the index expression if this index belongs
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| 266 | # to a subcollection
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| 267 | my $indexexparr = [];
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| 268 | my $langarr = [];
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| 269 |
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| 270 | # there may be subcollection info, and language info.
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| 271 | my ($fields, $subcollection, $language) = split (":", $index);
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| 272 | my @subcollections = ();
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| 273 | @subcollections = split /,/, $subcollection if (defined $subcollection);
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| 274 |
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| 275 | foreach $subcollection (@subcollections) {
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| 276 | if (defined ($self->{'collect_cfg'}->{'subcollection'}->{$subcollection})) {
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| 277 | push (@$indexexparr, $self->{'collect_cfg'}->{'subcollection'}->{$subcollection});
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| 278 | }
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| 279 | }
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| 280 |
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| 281 | # add expressions for languages if this index belongs to
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| 282 | # a language subcollection - only put languages expressions for the
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| 283 | # ones we want in the index
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| 284 | my @languages = ();
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| 285 | my $language_metadata = "Language";
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| 286 | if (defined ($self->{'collect_cfg'}->{'language_metadata'})) {
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| 287 | $language_metadata = $self->{'collect_cfg'}->{'language_metadata'};
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| 288 | }
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| 289 | @languages = split /,/, $language if (defined $language);
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| 290 | foreach my $language (@languages) {
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| 291 | my $not=0;
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| 292 | if ($language =~ s/^\!//) {
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| 293 | $not = 1;
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| 294 | }
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| 295 | if($not) {
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| 296 | push (@$langarr, "!$language");
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| 297 | } else {
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| 298 | push (@$langarr, "$language");
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| 299 | }
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| 300 | }
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| 301 |
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| 302 | # Build index dictionary. Uses verbatim stem method
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| 303 | print $outhandle "\n creating index dictionary (lucene_passes -I1)\n" if ($self->{'verbosity'} >= 1);
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| 304 | print STDERR "<Phase name='CreatingIndexDic'/>\n" if $self->{'gli'};
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| 305 | my ($handle);
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| 306 |
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| 307 | if ($self->{'debug'}) {
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| 308 | $handle = *STDOUT;
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| 309 | } else {
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| 310 | print STDERR "Cmd: $full_lucene_passes_exe $opt_create_index index $lucene_passes_sections \"$build_dir\" \"$indexdir\" $osextra\n";
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| 311 | if (!-e "$full_lucene_passes" ||
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| 312 | !open($handle, "| $full_lucene_passes_exe $opt_create_index index $lucene_passes_sections \"$build_dir\" \"$indexdir\" $osextra")) {
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| 313 | print STDERR "<FatalError name='NoRunLucenePasses'/>\n</Stage>\n" if $self->{'gli'};
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| 314 | die "lucenebuilder::build_index - couldn't run $full_lucene_passes_exe\n";
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| 315 | }
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| 316 | }
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| 317 |
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| 318 | my $store_levels = $self->{'levels'};
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| 319 | my $db_level = "section"; #always
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| 320 | my $dom_level = "";
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| 321 | foreach my $key (keys %$store_levels) {
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| 322 | if ($mgppbuilder::level_map{$key} eq $llevel) {
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| 323 | $dom_level = $key;
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| 324 | }
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| 325 | }
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| 326 | if ($dom_level eq "") {
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| 327 | print STDERR "Warning: unrecognized tag level $llevel\n";
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| 328 | $dom_level = "document";
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| 329 | }
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| 330 |
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| 331 | my $local_levels = { $dom_level => 1 }; # work on one level at a time
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| 332 |
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| 333 | # set up the document processr
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| 334 | $self->{'buildproc'}->set_output_handle ($handle);
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| 335 | $self->{'buildproc'}->set_mode ('text');
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| 336 | $self->{'buildproc'}->set_index ($index, $indexexparr);
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| 337 | $self->{'buildproc'}->set_index_languages ($language_metadata, $langarr) if (defined $language);
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| 338 | $self->{'buildproc'}->set_indexing_text (1);
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| 339 | $self->{'buildproc'}->set_indexfieldmap ($self->{'indexfieldmap'});
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| 340 | $self->{'buildproc'}->set_levels ($local_levels);
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| 341 | $self->{'buildproc'}->set_db_level($db_level);
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| 342 | $self->{'buildproc'}->reset();
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| 343 | &plugin::read ($self->{'pluginfo'}, $self->{'source_dir'},
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| 344 | "", {}, $self->{'buildproc'}, $self->{'maxdocs'}, 0, $self->{'gli'});
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| 345 | close ($handle) unless $self->{'debug'};
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| 346 |
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| 347 | $self->print_stats();
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| 348 |
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| 349 | $self->{'buildproc'}->set_levels ($store_levels);
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| 350 | print STDERR "</Stage>\n" if $self->{'gli'};
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| 351 | }
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| 352 |
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| 353 | # /** A modified version of the basebuilder.pm's function that generates the
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| 354 | # * information database from the GA documents. We need to change this
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| 355 | # * so that if we've been asked to do an incremental build we only add
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| 356 | # * metadata to autohierarchy classifiers via the IncrementalBuildUtils
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| 357 | # * module. All other classifiers and metadata will be ignored.
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| 358 | # */
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| 359 | sub make_infodatabase
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| 360 | {
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| 361 | my $self = shift (@_);
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| 362 | my $outhandle = $self->{'outhandle'};
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| 363 |
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| 364 | # Get info database file path
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| 365 | my $text_directory_path = &util::filename_cat($self->{'build_dir'}, "text");
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| 366 | my $infodb_file_path = &dbutil::get_infodb_file_path($self->{'collection'}, $text_directory_path);
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| 367 |
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| 368 | # If we aren't doing an incremental addition, then we just call the super-
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| 369 | # classes version
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| 370 | # Note: Incremental addition can only occur if an information database
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| 371 | # already exists. If it doesn't, let the super classes function be
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| 372 | # called once to generate it.
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| 373 | if (!$self->{'incremental_dlc'} || !-e $infodb_file_path)
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| 374 | {
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| 375 | # basebuilder::make_infodatabase(@_);
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| 376 | # Note: this doesn't work as the direct reference means all the $self
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| 377 | # data is lost.
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| 378 | $self->basebuilder::make_infodatabase(@_);
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| 379 | return;
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| 380 | }
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| 381 |
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| 382 | # Carry on with an incremental addition
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| 383 | print $outhandle "\n*** performing an incremental addition to the info database\n" if ($self->{'verbosity'} >= 1);
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| 384 | print STDERR "<Stage name='CreateInfoData'>\n" if $self->{'gli'};
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| 385 |
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| 386 | # 1. Init all the classifiers
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| 387 | &classify::init_classifiers ($self->{'classifiers'});
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| 388 | # 2. Init the buildproc settings.
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| 389 | # Note: we still need this to process any associated files - but we
|
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| 390 | # don't expect to pipe anything to txt2db so we can do away with the
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| 391 | # complex output handle.
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| 392 | my $assocdir = &util::filename_cat($self->{'build_dir'}, "assoc");
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| 393 | &util::mk_all_dir ($assocdir);
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| 394 | $self->{'buildproc'}->set_mode ('incinfodb'); # Very Important
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| 395 | $self->{'buildproc'}->set_assocdir ($assocdir);
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| 396 | # 3. Read in all the metadata from the files in the archives directory using
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| 397 | # the GAPlug and using ourselves as the document processor!
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| 398 | &plugin::read ($self->{'pluginfo'}, $self->{'source_dir'}, "", {}, $self->{'buildproc'}, $self->{'maxdocs'},0, $self->{'gli'});
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| 399 |
|
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| 400 | print STDERR "</Stage>\n" if $self->{'gli'};
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| 401 | }
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| 402 |
|
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| 403 | # /** Lucene specific document removal function. This works by calling lucene_passes.pl with
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| 404 | # * -remove and the document id on the command line.
|
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| 405 | # *
|
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| 406 | # * @param oid is the document identifier to be removed.
|
|---|
| 407 | # *
|
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| 408 | # * @author John Rowe, DL Consulting Ltd.
|
|---|
| 409 | # */
|
|---|
| 410 | sub remove_document_from_database
|
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| 411 | {
|
|---|
| 412 | my ($self, $oid) = @_;
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|---|
| 413 | # Find the perl script to call to run lucene
|
|---|
| 414 | my $full_lucene_passes_exe = $self->{'full_lucene_passes_exe'};
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| 415 | # Call lucene_passes.pl with -remove and the document ID on the command line
|
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| 416 | `$full_lucene_passes_exe -remove "$oid"`;
|
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| 417 | }
|
|---|
| 418 | # /** remove_document_from_database **/
|
|---|
| 419 |
|
|---|
| 420 |
|
|---|
| 421 | 1;
|
|---|
| 422 |
|
|---|
| 423 |
|
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