rewrite COBISS into perl object

and modify server to use it

diff --git a/COBISS.pm b/COBISS.pm
index c275f3e..ce1eea0 100644 (file)
--- a/COBISS.pm
+++ b/COBISS.pm
@@ -9,6 +9,14 @@ use Data::Dump qw/dump/;
 
 binmode STDOUT, ':utf8';
 
+sub new {
+    my ( $class ) = @_;
+    my $self = {};
+    bless $self, $class;
+    return $self;
+}
+
+
 my $cobiss_marc21 = {
        '010' => { a => [ '020', 'a' ] },
         200  => {
@@ -31,9 +39,6 @@ my $cobiss_marc21 = {
        },
 };
 
-our $mech = WWW::Mechanize->new();
-our $hits;
-
 sub diag {
        print "# ", @_, $/;
 }
@@ -51,7 +56,7 @@ sub diag {
 # @attr 1=1007 standard-id 
 # @attr 1=1016 any
 
-our $usemap = {
+sub usemap {{
        8               => 'BN',        # FIXME check
        7               => 'SN',        # FIXME check
        4               => 'TI',
@@ -62,7 +67,7 @@ our $usemap = {
 #      1007    => '',
 #      1016    => '',
 
-};
+}};
 
 sub search {
        my ( $self, $query ) = @_;
@@ -73,6 +78,8 @@ sub search {
 
 diag "get $url";
 
+       my $mech = $self->{mech} = WWW::Mechanize->new();
+       my $hits;
        $mech->get( $url );
 
 diag "got session";
@@ -106,12 +113,16 @@ diag "got $hits results, get first one";
 diag "in COMARC format";
 
        $mech->follow_link( url_regex => qr/fmt=13/ );
+
+       return $hits;
 }
 
 
-sub fetch_rec {
+sub next_marc {
        my ($self,$format) = @_;
 
+       my $mech = $self->{mech} || die "no mech?";
+
        $format ||= 'unimarc';
 
        die "unknown format: $format" unless $format =~ m{(uni|us)marc};

diff --git a/server.pl b/server.pl
index 8f4f6c5..8d7c60d 100755 (executable)
--- a/server.pl
+++ b/server.pl
@@ -5,8 +5,16 @@ use strict;
 
 use Net::Z3950::SimpleServer;
 use Net::Z3950::OID;
+use Data::Dumper;
 use COBISS;
 
+my $databases = {
+       'COBISS' => 'COBISS',
+       'NSK01'  => 'Aleph',
+       'NSK10'  => 'Aleph',
+       'ZAG01'  => 'Aleph',
+};
+
 my $max_records = 3; # XXX configure this
 my $max_result_sets = 10;
 
@@ -24,8 +32,6 @@ sub InitHandle {
     $session->{SETS}  = {};
 }
 
-use Data::Dumper;
-
 sub SearchHandle {
     my $this    = shift;
 
@@ -35,7 +41,13 @@ diag "SearchHandle ",Dumper($this);
     my $rpn     = $this->{RPN};
     my $query;
 
-    eval { $query = $rpn->{query}->render(); };
+       my $database = $this->{DATABASES}->[0];
+       my $module   = $databases->{$database} || 'COBISS';
+       my $from = $module->new;
+
+diag "using $module for $database ", Dumper( $from );
+
+       eval { $query = $rpn->{query}->render( $from->usemap ); };
        warn "ERROR: $@" if $@;
     if ( $@ && ref($@) ) {    ## Did someone/something report any errors?
         $this->{ERR_CODE} = $@->{errcode};
@@ -48,17 +60,17 @@ diag "search for $query";
     my $setname  = $this->{SETNAME};
     my $repl_set = $this->{REPL_SET};
 diag "SETNAME $setname REPL_SET $repl_set";
-    my $result;
-    unless ( $result = COBISS->search( $query ) ) {
+    my $hits;
+    unless ( $hits = $from->search( $query ) ) {
         $this->{ERR_CODE} = 108;
         return;
     }
-    my $hits = $COBISS::hits || diag "no results for $query";
 diag "got $hits hits";
     my $rs   = {
         lower => 1,
         upper => $hits < $max_records ? $max_records : $hits,
-        data  => $result->{'resultElements'},  # FIXME
+        hits  => $hits,
+               from => $from,
     };
     my $sets = $session->{SETS};
 
@@ -87,8 +99,6 @@ sub FetchHandle {
     my $rs;
     my $record;
 
-diag Dumper( $this );
-
     if ( !defined( $rs = $sets->{$setname} ) ) {
         $this->{ERR_CODE} = 30;
         return;
@@ -97,6 +107,9 @@ diag Dumper( $this );
         $this->{ERR_CODE} = 13;
         return;
     }
+
+       my $from = $rs->{from} || die "no from?";
+
     $this->{BASENAME} = "HtmlZ3950";
 
 #    if ( !defined($req_form) || ( $req_form eq &Net::Z3950::OID::xml ) )
@@ -107,11 +120,11 @@ diag Dumper( $this );
     }
     elsif ( $req_form eq &Net::Z3950::OID::unimarc ) { # FIXME convert to usmarc
         $this->{REP_FORM} = &Net::Z3950::OID::unimarc;
-        $this->{RECORD} = COBISS->fetch_rec('unimarc');
+        $this->{RECORD} = $from->next_marc('unimarc');
     }
     elsif ( $req_form eq &Net::Z3950::OID::usmarc ) {  # FIXME convert to usmarc
         $this->{REP_FORM} = &Net::Z3950::OID::usmarc;
-        $this->{RECORD} = COBISS->fetch_rec('usmarc');
+        $this->{RECORD} = $from->next_marc('usmarc');
     }
     else {    ## Unsupported record format
         $this->{ERR_CODE} = 239;
@@ -165,13 +178,10 @@ use Data::Dump qw(dump);
 use COBISS;
 
 sub render {
-    my ($this,$from) = @_;
-
-print "render ", dump($this);
+       my ($this,$usemap) = @_;
 
-my $usemap = eval '$' . $from . '::usemap';
-die $@ if $@;
-warn "# $from usermap ",dump($usemap);
+warn "# render ", dump($this);
+warn "# usemap ", dump($usemap);
 
     my $attributes = {};
     my $prefix     = "";