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dpavlin |
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create table servers ( |
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name text not null, |
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host text not null, |
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port int not null default 210, |
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database text default 'Default', |
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dpavlin |
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maxres int not null default 100, |
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dpavlin |
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primary key(name) |
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); |
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-- insert sample |
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dpavlin |
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insert into servers values ( 'nsk', '161.53.240.27', 8090, 'voyager', 0 ); |
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insert into servers values ( 'nsk-en', '161.53.240.27', 8190, 'voyager', 300 ); |
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insert into servers values ( 'loc', 'z3950.loc.gov', 7090, 'Voyager', 300 ); |
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insert into servers values ( 'ucs', 'library.usc.edu', 2200, 'unicorn', 100 ); |
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dpavlin |
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--insert into servers values ( '', '', , '' ); |
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dpavlin |
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create type item as ( |
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title text, |
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author text, |
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edition text, |
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date text |
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); |
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dpavlin |
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create or replace function search(text,text) |
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dpavlin |
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returns setof item |
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language plperlu |
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as $$ |
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dpavlin |
9 |
use strict; |
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dpavlin |
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my $debug = 0; |
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dpavlin |
1 |
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dpavlin |
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my ( $server, $query ) = @_; |
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dpavlin |
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dpavlin |
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my $rv = spi_exec_query(qq{ |
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dpavlin |
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select host,port,database,maxres from servers where name ilike '$server' |
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dpavlin |
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},1); |
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dpavlin |
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die "can't find server $server in table servers\n" unless ( $rv->{processed} == 1 ); |
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dpavlin |
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dpavlin |
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my ( $host, $port, $database, $max_res ) = ( |
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dpavlin |
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$rv->{rows}[0]->{host}, |
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$rv->{rows}[0]->{port}, |
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$rv->{rows}[0]->{database}, |
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dpavlin |
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$rv->{rows}[0]->{maxres}, |
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dpavlin |
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); |
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dpavlin |
1 |
use ZOOM; |
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use MARC::Record; |
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dpavlin |
2 |
use Encode qw/encode decode/; |
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dpavlin |
1 |
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my $pqf = { |
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isbn => '@attr 1=7 @attr 4=1 "%s"', |
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title => '@attr 1=4 @attr 4=1 "%s"', |
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author => '@attr 1=1003 @attr 4=1 "%s"', |
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issn => '@attr 1=8 @attr 4=1 "%s"', |
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}; |
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sub q2cqf { |
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my $q = shift; |
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if ($q =~ m/^(\w+):\s*(.*)$/) { |
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my ( $k,$v ) = ( $1,$2 ); |
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return sprintf( $pqf->{ $k }, $v ) if ( defined( $pqf->{ $k } ) ); |
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} |
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return $q; |
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} |
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my $conn = new ZOOM::Connection($host, $port, |
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databaseName => $database) or |
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die "can't connect to ${host}:${port}/${database}\n"; |
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$conn->option(preferredRecordSyntax => "usmarc"); |
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dpavlin |
8 |
my $rs; |
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dpavlin |
1 |
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dpavlin |
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my $notice; |
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dpavlin |
2 |
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dpavlin |
8 |
if ( $query =~ m/[\s="]|(and|or|not)/ ) { |
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$rs = $conn->search( new ZOOM::Query::CQL( $query ) ); |
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$notice = 'CQL'; |
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} else { |
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my $cqf = q2cqf( $query ); |
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$notice = "CQF: $cqf"; |
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$rs = $conn->search_pqf( $cqf ); |
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} |
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dpavlin |
1 |
my $n = $rs->size(); |
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dpavlin |
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if ( $n > $max_res ) { |
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warn "query returned $n results, fetching first $max_res\n"; |
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$n = $max_res; |
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} |
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dpavlin |
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# fetch all results |
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$rs->records(0, $n - 1, 0); |
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dpavlin |
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warn "$n results for '$query' $notice\n"; |
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dpavlin |
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dpavlin |
2 |
sub strip_non_digit { |
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my $d = shift; |
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$d =~ s/^\D+//; |
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$d =~ s/\D+$//; |
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return $d; |
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} |
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# fix encoding |
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sub e { |
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my $t = shift; |
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$t =~ s/éc/è/g; |
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$t =~ s/âc/æ/g; |
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dpavlin |
3 |
$t =~ s/éz/¾/g; |
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dpavlin |
2 |
$t =~ s/és/¹/g; |
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dpavlin |
3 |
$t =~ s/³/ð/g; |
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dpavlin |
2 |
$t =~ s/éC/È/g; |
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$t =~ s/âC/Æ/g; |
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dpavlin |
3 |
$t =~ s/éZ/®/g; |
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dpavlin |
2 |
$t =~ s/éS/©/g; |
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$t =~ s/£/Ð/g; |
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dpavlin |
4 |
warn "## $t\n" if $debug; |
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dpavlin |
2 |
# $t = decode('iso-8859-2', $t); |
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# return encode('utf-8',$t); |
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return $t; |
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} |
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dpavlin |
1 |
foreach my $i ( 1 .. $n ) { |
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my $marc = new_from_usmarc MARC::Record( $rs->record( $i - 1 )->raw() ); |
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return_next({ |
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dpavlin |
2 |
title => e( $marc->title ), |
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author => e( $marc->author ), |
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edition => e( $marc->edition ), |
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date => strip_non_digit( $marc->publication_date ), |
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dpavlin |
1 |
}); |
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} |
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return undef; |
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$$; |
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-- if your terminal isn't iso-8859-2, change this! |
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dpavlin |
2 |
-- set client_encoding = 'iso-8859-2'; |
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dpavlin |
1 |
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dpavlin |
2 |
-- example |
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-- select * from search('title:djece'); |
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-- select * from search('osman'); |
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dpavlin |
7 |
--select * from search('nsk','title:mor'); |
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--select * from search('nsk','grada'); |
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--select * from search('nsk-en','restrictions'); |
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dpavlin |
8 |
--select * from search('ucs','human'); |
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dpavlin |
9 |
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SELECT date,count(date) |
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FROM search('loc','human and computer and interaction') |
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GROUP BY date |
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