trunk/bin/pgest-index.pl

#!/usr/bin/perl -w

use strict;
use Search::Estraier 0.07;
use DBI;
use Data::Dumper;
use Encode qw/from_to/;
use Time::HiRes qw/time/;
use Getopt::Long;

=head1 NAME

pgest-index.pl - create full-text index of some columns in your database

=cut

my $c = {
        name => 'imenik',
        node_url => 'http://localhost:1978/node/imenik',
        dbi => 'Pg:dbname=vip',
        sql => qq{
                select ime,tel from imenik
        },
        pk_col => 'tel',
        db_encoding => 'iso-8859-2',
        debug => 1,
        user => 'admin',
        passwd => 'admin',
};

GetOptions($c, qw/node_url=s sql=s pk_col=s eb_encoding=s debug+ user=s passwd=s/);

warn "# c: ", Dumper($c) if ($c->{debug});

my $table = $c->{name} || die "no name?";

# create and configure node
my $node = new Search::Estraier::Node(
        url => $c->{node_url},
        user => $c->{user},
        passwd => $c->{passwd},
        croak_on_error => 1,
        create => 1,
        debug => $c->{debug} >= 4 ? 1 : 0,
);

$node->master(
        action => 'nodeclr',
        name => $table,
);

# create DBI connection
my $dbh = DBI->connect("DBI:$c->{dbi}","","") || die $DBI::errstr;

# create PostgreSQL functions
$dbh->do(qq{

CREATE OR REPLACE FUNCTION pgest(text, text, text, int, text, text, text, int, int, text[])
        RETURNS setof record
        AS 'pgest','pgest_node'
        LANGUAGE 'C' IMMUTABLE CALLED ON NULL INPUT;

CREATE OR REPLACE FUNCTION pgest_trigger() RETURNS TRIGGER
        AS 'pgest', 'pgest_trigger'
        LANGUAGE 'C' STRICT;

}) || die $dbh->errstr();


# drop existing triggers
foreach my $t (qw/UPDATE INSERT DELETE/) {
        my $lc_t = lc($t);
        $dbh->do(qq{ DROP TRIGGER pgest_trigger_${lc_t} ON ${table} });
}

$dbh->begin_work;

my $sth = $dbh->prepare($c->{sql}) || die $dbh->errstr();
$sth->execute() || die $sth->errstr();

my @cols = @{ $sth->{NAME} };

warn "# columns: ",join(",", @cols),"\n" if ($c->{debug});

my $total = $sth->rows;
my $i = 1;

my $t = time();
my $pk_col = $c->{pk_col} || 'id';

while (my $row = $sth->fetchrow_hashref() ) {

        warn "# row: ",Dumper($row) if ($c->{debug} >= 3);

        # create document
        my $doc = new Search::Estraier::Document;

        if (my $id = $row->{$pk_col}) {
                $doc->add_attr('@uri', $id);
        } else {
                die "can't find pk_col column '$pk_col' in results\n";
        }

        printf "%4d ",$i;

        while (my ($col,$val) = each %{$row}) {

                if ($val) {
                        # change encoding?
                        from_to($val, ($c->{db_encoding} || 'ISO-8859-1'), 'UTF-8');

                        # add attributes (make column usable from attribute search)
                        $doc->add_attr($col, $val);

                        # add body text to document (make it searchable using full-text index)
                        $doc->add_text($val);

                        print "R";
                } else {
                        print ".";
                }

        }

        warn "# doc draft: ",$doc->dump_draft, "\n" if ($c->{debug} >= 2);

        die "error: ", $node->status,"\n" unless (eval { $node->put_doc($doc) });

        printf (" %d%% %.1f/s\n", int(( $i++ / $total) * 100), ( $i / (time() - $t) ) );

}

my $cols = "'" . join("', '", @cols) . "'";

foreach my $t (qw/UPDATE INSERT DELETE/) {

        my $lc_t = lc($t);

        my $sql = qq{

                CREATE TRIGGER pgest_trigger_${lc_t} AFTER ${t}
                        ON ${table} FOR EACH ROW
                        EXECUTE PROCEDURE pgest_trigger('$c->{node_url}','$c->{user}','$c->{passwd}',
                                '$c->{pk_col}', $cols
                        )

        };

        #warn "$sql\n";

        $dbh->do( $sql ) || die $dbh->errstr();

}

$dbh->commit;

my $col_names = join(', ', @cols);
my $col_def = join(', ', map { "$_ text" } @cols);

print "example SQL search query:


SELECT $col_names
FROM pgest(
        -- node, login, passwd, depth
        '$c->{node_url}', '$c->{user}', '$c->{passwd}', 0,
        -- full text search
        'foo bar',
        -- attribute filter, order by, limit, offset
        null, null, null, null,
        -- return columns
        array[$cols]
) as ($col_def);

";
1	dpavlin	62	#!/usr/bin/perl -w
2
3			use strict;
4	dpavlin	63	use Search::Estraier 0.07;
5	dpavlin	62	use DBI;
6			use Data::Dumper;
7			use Encode qw/from_to/;
8			use Time::HiRes qw/time/;
9			use Getopt::Long;
10
11			=head1 NAME
12
13			pgest-index.pl - create full-text index of some columns in your database
14
15			=cut
16
17			my $c = {
18			name => 'imenik',
19			node_url => 'http://localhost:1978/node/imenik',
20			dbi => 'Pg:dbname=vip',
21			sql => qq{
22			select ime,tel from imenik
23			},
24			pk_col => 'tel',
25			db_encoding => 'iso-8859-2',
26			debug => 1,
27			user => 'admin',
28			passwd => 'admin',
29			};
30
31			GetOptions($c, qw/node_url=s sql=s pk_col=s eb_encoding=s debug+ user=s passwd=s/);
32
33			warn "# c: ", Dumper($c) if ($c->{debug});
34
35	dpavlin	63	my $table = $c->{name} \|\| die "no name?";
36
37	dpavlin	62	# create and configure node
38			my $node = new Search::Estraier::Node(
39			url => $c->{node_url},
40			user => $c->{user},
41			passwd => $c->{passwd},
42			croak_on_error => 1,
43			create => 1,
44			debug => $c->{debug} >= 4 ? 1 : 0,
45			);
46
47	dpavlin	63	$node->master(
48			action => 'nodeclr',
49			name => $table,
50			);
51
52	dpavlin	62	# create DBI connection
53			my $dbh = DBI->connect("DBI:$c->{dbi}","","") \|\| die $DBI::errstr;
54
55	dpavlin	63	# create PostgreSQL functions
56			$dbh->do(qq{
57
58			CREATE OR REPLACE FUNCTION pgest(text, text, text, int, text, text, text, int, int, text[])
59			RETURNS setof record
60			AS 'pgest','pgest_node'
61			LANGUAGE 'C' IMMUTABLE CALLED ON NULL INPUT;
62
63			CREATE OR REPLACE FUNCTION pgest_trigger() RETURNS TRIGGER
64			AS 'pgest', 'pgest_trigger'
65			LANGUAGE 'C' STRICT;
66
67			}) \|\| die $dbh->errstr();
68
69
70			# drop existing triggers
71			foreach my $t (qw/UPDATE INSERT DELETE/) {
72			my $lc_t = lc($t);
73			$dbh->do(qq{ DROP TRIGGER pgest_trigger_${lc_t} ON ${table} });
74			}
75
76			$dbh->begin_work;
77
78	dpavlin	62	my $sth = $dbh->prepare($c->{sql}) \|\| die $dbh->errstr();
79			$sth->execute() \|\| die $sth->errstr();
80
81			my @cols = @{ $sth->{NAME} };
82
83			warn "# columns: ",join(",", @cols),"\n" if ($c->{debug});
84
85			my $total = $sth->rows;
86			my $i = 1;
87
88			my $t = time();
89			my $pk_col = $c->{pk_col} \|\| 'id';
90
91			while (my $row = $sth->fetchrow_hashref() ) {
92
93			warn "# row: ",Dumper($row) if ($c->{debug} >= 3);
94
95			# create document
96			my $doc = new Search::Estraier::Document;
97
98			if (my $id = $row->{$pk_col}) {
99			$doc->add_attr('@uri', $id);
100			} else {
101			die "can't find pk_col column '$pk_col' in results\n";
102			}
103
104			printf "%4d ",$i;
105
106			while (my ($col,$val) = each %{$row}) {
107
108			if ($val) {
109			# change encoding?
110			from_to($val, ($c->{db_encoding} \|\| 'ISO-8859-1'), 'UTF-8');
111
112			# add attributes (make column usable from attribute search)
113			$doc->add_attr($col, $val);
114
115			# add body text to document (make it searchable using full-text index)
116			$doc->add_text($val);
117
118			print "R";
119			} else {
120			print ".";
121			}
122
123			}
124
125			warn "# doc draft: ",$doc->dump_draft, "\n" if ($c->{debug} >= 2);
126
127			die "error: ", $node->status,"\n" unless (eval { $node->put_doc($doc) });
128
129			printf (" %d%% %.1f/s\n", int(( $i++ / $total) * 100), ( $i / (time() - $t) ) );
130
131			}
132
133	dpavlin	65	my $cols = "'" . join("', '", @cols) . "'";
134	dpavlin	62
135			foreach my $t (qw/UPDATE INSERT DELETE/) {
136
137			my $lc_t = lc($t);
138
139			my $sql = qq{
140
141			CREATE TRIGGER pgest_trigger_${lc_t} AFTER ${t}
142			ON ${table} FOR EACH ROW
143			EXECUTE PROCEDURE pgest_trigger('$c->{node_url}','$c->{user}','$c->{passwd}',
144			'$c->{pk_col}', $cols
145			)
146
147			};
148
149	dpavlin	63	#warn "$sql\n";
150	dpavlin	62
151			$dbh->do( $sql ) \|\| die $dbh->errstr();
152
153			}
154	dpavlin	63
155			$dbh->commit;
156	dpavlin	65
157			my $col_names = join(', ', @cols);
158			my $col_def = join(', ', map { "$_ text" } @cols);
159
160			print "example SQL search query:
161
162
163			SELECT $col_names
164			FROM pgest(
165			-- node, login, passwd, depth
166			'$c->{node_url}', '$c->{user}', '$c->{passwd}', 0,
167			-- full text search
168			'foo bar',
169			-- attribute filter, order by, limit, offset
170			null, null, null, null,
171			-- return columns
172			array[$cols]
173			) as ($col_def);
174
175			";