+++ /dev/null
-package C4::Z3950;
-
-
-# Routines for handling Z39.50 lookups
-
-# Koha library project www.koha-community.org
-
-# Licensed under the GPL
-
-# Copyright 2000-2002 Katipo Communications
-#
-# This file is part of Koha.
-#
-# Koha is free software; you can redistribute it and/or modify it under the
-# terms of the GNU General Public License as published by the Free Software
-# Foundation; either version 2 of the License, or (at your option) any later
-# version.
-#
-# Koha is distributed in the hope that it will be useful, but WITHOUT ANY
-# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
-# A PARTICULAR PURPOSE. See the GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License along
-# with Koha; if not, write to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-
-use strict;
-#use warnings; FIXME - Bug 2505
-
-# standard or CPAN modules used
-use DBI;
-
-# Koha modules used
-use C4::Input;
-use C4::Biblio;
-
-use vars qw($VERSION @ISA @EXPORT);
-
-BEGIN {
- # set the version for version checking
- $VERSION = 3.07.00.049;
- require Exporter;
- @ISA = qw(Exporter);
- @EXPORT = qw(
- &getz3950servers
- &z3950servername
- &addz3950queue
- &checkz3950searchdone
- );
-}
-
-=head1 NAME
-
-C4::Z3950 - Functions dealing with Z39.50 queries
-
-=head1 SYNOPSIS
-
- use C4::Z3950;
-
-=head1 DESCRIPTION
-
-This module contains functions for looking up Z39.50 servers, and for
-entering Z39.50 lookup requests.
-
-=head1 FUNCTIONS
-
-=over 2
-
-=item getz3950servers
-
- @servers= &getz3950servers(checked);
-
-Returns the list of declared z3950 servers
-
-C<$checked> should always be true (1) => returns only active servers.
-If 0 => returns all servers
-
-=cut
-
-sub getz3950servers {
- my ($checked) = @_;
- my $dbh = C4::Context->dbh;
- my $sth;
- if ($checked) {
- $sth = $dbh->prepare("select * from z3950servers where checked=1");
- } else {
- $sth = $dbh->prepare("select * from z3950servers");
- }
- my @result;
- while ( my ($host, $port, $db, $userid, $password,$servername) = $sth->fetchrow ) {
- push @result, "$servername/$host\:$port/$db/$userid/$password";
- } # while
- return @result;
-}
-
-=item z3950servername
-
- $name = &z3950servername($dbh, $server_id, $default_name);
-
-Looks up a Z39.50 server by ID number, and returns its full name. If
-the server is not found, returns C<$default_name>.
-
-C<$server_id> is the Z39.50 server ID to look up.
-
-C<$dbh> is ignored.
-
-=cut
-
-#'
-
-sub z3950servername {
- # inputs
- my ($srvid, # server id number
- $default,)=@_;
- # return
- my $longname;
- #----
-
- my $dbh = C4::Context->dbh;
-
- my $sti=$dbh->prepare("select name from z3950servers where id=?");
-
- $sti->execute($srvid);
- if ( ! $sti->err ) {
- ($longname)=$sti->fetchrow;
- }
- if (! $longname) {
- $longname="$default";
- }
- return $longname;
-} # sub z3950servername
-
-#---------------------------------------
-
-=item addz3950queue
-
- $errmsg = &addz3950queue($query, $type, $request_id, @servers);
-
-Adds a Z39.50 search query for the Z39.50 server to look up.
-
-C<$query> is the term to search for.
-
-C<$type> is the query type, e.g. C<isbn>, C<lccn>, etc.
-
-C<$request_id> is a unique string that will identify this query.
-
-C<@servers> is a list of servers to query (obviously, this can be
-given either as an array, or as a list of scalars). Each element may
-be either a Z39.50 server ID from the z3950server table of the Koha
-database, the string C<DEFAULT> or C<CHECKED>, or a complete server
-specification containing a colon.
-
-C<DEFAULT> and C<CHECKED> are synonymous, and refer to those servers
-in the z3950servers table whose 'checked' field is set and non-NULL.
-
-Once the query has been submitted to the Z39.50 daemon,
-C<&addz3950queue> sends a SIGHUP to the daemon to tell it to process
-this new request.
-
-C<&addz3950queue> returns an error message. If it was successful, the
-error message is the empty string.
-
-=cut
-
-#'
-sub addz3950queue {
- use strict;
- # input
- my (
- $query, # value to look up
- $type, # type of value ("isbn", "lccn", "title", "author", "keyword")
- $requestid, # Unique value to prevent duplicate searches from multiple HTML form submits
- @z3950list, # list of z3950 servers to query
- )=@_;
- # Returns:
- my $error;
-
- my (
- $sth,
- @serverlist,
- $server,
- $failed,
- $servername,
- );
-
- # FIXME - Should be configurable, probably in /etc/koha.conf.
- my $pidfile='/var/log/koha/processz3950queue.pid';
-
- $error="";
-
- my $dbh = C4::Context->dbh;
- # list of servers: entry can be a fully qualified URL-type entry
- # or simply just a server ID number.
- foreach $server (@z3950list) {
- if ($server =~ /:/ ) {
- push @serverlist, $server;
- } elsif ($server eq 'DEFAULT' || $server eq 'CHECKED' ) {
- $sth=$dbh->prepare("select host,port,db,userid,password ,name,syntax from z3950servers where checked <> 0 ");
- $sth->execute;
- while ( my ($host, $port, $db, $userid, $password,$servername,$syntax) = $sth->fetchrow ) {
- push @serverlist, "$servername/$host\:$port/$db/$userid/$password/$syntax";
- } # while
- } else {
- $sth=$dbh->prepare("select host,port,db,userid,password,syntax from z3950servers where id=? ");
- $sth->execute($server);
- my ($host, $port, $db, $userid, $password,$syntax) = $sth->fetchrow;
- push @serverlist, "$server/$host\:$port/$db/$userid/$password/$syntax";
- }
- }
-
- my $serverlist='';
-
- $serverlist = join("|", @serverlist);
-# chop $serverlist;
-
- # FIXME - Is this test supposed to test whether @serverlist is
- # empty? If so, then a) there are better ways to do that in
- # Perl (e.g., "if (@serverlist eq ())"), and b) it doesn't
- # work anyway, since it checks whether $serverlist is composed
- # of one or more spaces, which is never the case, not even
- # when there are 0 or 1 elements in @serverlist.
- if ( $serverlist !~ /^ +$/ ) {
- # Don't allow reinsertion of the same request identifier.
- $sth=$dbh->prepare("select identifier from z3950queue
- where identifier=?");
- $sth->execute($requestid);
- if ( ! $sth->rows) {
- $sth=$dbh->prepare("insert into z3950queue (term,type,servers, identifier) values (?, ?, ?, ?)");
- $sth->execute($query, $type, $serverlist, $requestid);
- if ( -r $pidfile ) {
- # FIXME - Perl is good at opening files. No need to
- # spawn a separate 'cat' process.
- my $pid=`cat $pidfile`;
- chomp $pid;
- # Kill -HUP the Z39.50 daemon to tell it to process
- # this query.
- my $processcount=kill 1, $pid;
- if ($processcount==0) {
- $error.="Z39.50 search daemon error: no process signalled. ";
- }
- } else {
- # FIXME - Error-checking like this should go close
- # to the test.
- $error.="No Z39.50 search daemon running: no file $pidfile. ";
- } # if $pidfile
- } else {
- # FIXME - Error-checking like this should go close
- # to the test.
- $error.="Duplicate request ID $requestid. ";
- } # if rows
- } else {
- # FIXME - Error-checking like this should go close to the
- # test. I.e.,
- # return "No Z39.50 search servers specified. "
- # if @serverlist eq ();
-
- # server list is empty
- $error.="No Z39.50 search servers specified. ";
- } # if serverlist empty
-
- return $error;
-
-} # sub addz3950queue
-
-=item &checkz3950searchdone
-
- $numberpending= & &checkz3950searchdone($random);
-
-Returns the number of pending z3950 requests
-
-C<$random> is the random z3950 query number.
-
-=cut
-
-sub checkz3950searchdone {
- my ($z3950random) = @_;
- my $dbh = C4::Context->dbh;
- # first, check that the deamon already created the requests...
- my $sth = $dbh->prepare("select count(*) from z3950queue,z3950results where z3950queue.id = z3950results.queryid and z3950queue.identifier=?");
- $sth->execute($z3950random);
- my ($result) = $sth->fetchrow;
- if ($result eq 0) { # search not yet begun => should be searches to do !
- return "??";
- }
- # second, count pending requests
- $sth = $dbh->prepare("select count(*) from z3950queue,z3950results where z3950queue.id = z3950results.queryid and z3950results.enddate is null and z3950queue.identifier=?");
- $sth->execute($z3950random);
- ($result) = $sth->fetchrow;
- return $result;
-}
-
-1;
-__END__
-
-=back
-
-=head1 AUTHOR
-
-Koha Development Team <http://koha-community.org/>
-
-=cut
projects / koha.git / commitdiff