root/main/trunk/greenstone2/bin/script/lucene_query.pl @ 31747

Revision 31747, 5.0 KB (checked in by ak19, 3 years ago)

When we settle on a JRE (which could be the bundled JRE), only JRE_HOME is now exported. That should be the path to the java executable that is found. Need to rethink whether we export JAVA_HOME too as JRE_HOME in future if we settle on a JRE, just to work with our code where JAVA_HOME is expected.

  • Property svn:executable set to *
  • Property svn:keywords set to Author Date Id Revision
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1#!/usr/bin/perl -w
2
3###########################################################################
4#
5# lucene_query.pl -- perl wrapper to initiate query using Lucene
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) 1999 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
29BEGIN {
30    die "GSDLHOME not set\n" unless defined $ENV{'GSDLHOME'};
31    die "GSDLOS not set\n" unless defined $ENV{'GSDLOS'};
32    unshift (@INC, "$ENV{'GSDLHOME'}/perllib");
33}
34
35use strict;
36use util;
37
38my $PROGNAME = $0;
39$PROGNAME =~ s/^.*\/(.*)$/$1/;
40
41
42sub get_java_path()
43{
44    # Check the JAVA_HOME environment variable first
45    if (defined $ENV{'JAVA_HOME'}) {
46    my $java_home = $ENV{'JAVA_HOME'};
47    $java_home =~ s/\/$//;  # Remove trailing slash if present (Unix specific)
48    return &util::filename_cat($java_home, "bin", "java");
49    }
50    elsif (defined $ENV{'JRE_HOME'}) {
51    my $jre_home = $ENV{'JRE_HOME'};
52    $jre_home =~ s/\/$//;  # Remove trailing slash if present (Unix specific)
53    return &util::filename_cat($jre_home, "bin", "java");
54    }
55
56    # Hope that Java is on the PATH
57    return "java";
58}
59
60sub open_java_lucene
61{
62    my $full_indexdir = shift(@_);
63    my $fuzziness = shift(@_);
64    my $filter_string = shift(@_);
65    my $sort_field = shift(@_);
66    my $reverse_sort = shift(@_);
67    my $dco = shift(@_);
68    my $start_results = shift(@_);
69    my $end_results = shift(@_);
70    my $out_file = shift(@_);
71
72    my $java = &get_java_path();
73    my $classpath = &util::filename_cat($ENV{'GSDLHOME'}, "bin", "java", "LuceneWrapper4.jar");
74    my $java_lucene = "\"$java\" -classpath \"$classpath\" org.greenstone.LuceneWrapper4.GS2LuceneQuery";
75
76    my $cmd = "| " . $java_lucene . " \"" . $full_indexdir . "\"";
77    if (defined($fuzziness)) {
78        $cmd .= " -fuzziness " . $fuzziness;
79    }
80    if (defined($filter_string)) {
81    $cmd .= " -filter \"" . $filter_string . "\"";
82    }
83    if (defined($sort_field)) {
84        $cmd .= " -sort " . $sort_field;
85    }
86    if ($reverse_sort) {
87    $cmd .= " -reverse_sort";
88    }
89    if (defined($dco)) {
90        $cmd .= " -dco " . $dco;
91    }
92    if (defined($start_results)) {
93        $cmd .= " -startresults " . $start_results;
94    }
95    if (defined($end_results)) {
96        $cmd .= " -endresults " . $end_results;
97    }
98    if (defined($out_file)) {
99    $cmd .= " > \"" . $out_file . "\"";
100    }
101     print STDERR $cmd . "\n";
102
103    if (!open (PIPEOUT, $cmd)) {
104    die "$PROGNAME - couldn't run $cmd\n";
105    }
106}
107
108sub close_java_lucene
109{
110    close(PIPEOUT);
111}
112
113sub main
114{
115    my (@argv) = @_;
116    my $argc = scalar(@argv);
117    if ($argc == 0) {
118    print STDERR "Usage: $PROGNAME full-index-dir [query] [-fuzziness value] [-filter filter_string] [-sort sort_field] [-reverse_sort]  [-dco AND|OR] [-startresults number -endresults number] [-out out_file]\n";
119    exit 1;
120    }
121
122    my $full_indexdir = shift(@argv);
123    my $query = undef;
124    my $fuzziness = undef;
125    my $filter_string = undef;
126    my $sort_field = undef;
127    my $reverse_sort = 0;
128    my $dco = undef;
129    my $start_results = undef;
130    my $end_results = undef;
131    my $out_file = undef;
132    for (my $i = 0; $i < scalar(@argv); $i++)
133    {
134    if ($argv[$i] eq "-fuzziness") {
135        $i++;
136        $fuzziness = $argv[$i];
137    }
138        elsif ($argv[$i] eq "-filter") {
139            $i++;
140            $filter_string = $argv[$i];
141    }
142        elsif ($argv[$i] eq "-sort") {
143            $i++;
144            $sort_field = $argv[$i];
145    }
146    elsif ($argv[$i] eq "-reverse_sort") {
147        $reverse_sort = 1;
148    }
149        elsif ($argv[$i] eq "-dco") {
150            $i++;
151            $dco = $argv[$i];
152    }
153        elsif ($argv[$i] eq "-startresults") {
154            $i++;
155            $start_results = $argv[$i];
156    }
157        elsif ($argv[$i] eq "-endresults") {
158            $i++;
159            $end_results = $argv[$i];
160    }
161        elsif ($argv[$i] eq "-out") {
162            $i++;
163            $out_file = $argv[$i];
164    }
165        else {
166            $query = $argv[$i];
167    }
168    }
169
170    open_java_lucene($full_indexdir, $fuzziness, $filter_string, $sort_field, $reverse_sort, $dco, $start_results, $end_results, $out_file);
171
172    if (defined $query) {
173    print PIPEOUT "$query\n";
174    }
175    else {
176    while (defined (my $line = <STDIN>)) {
177        print PIPEOUT $line;
178    }
179    }
180
181    close_java_lucene();
182}
183
184&main(@ARGV);
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