use Exporter 'import';
@EXPORT = qw/
_set_rec _set_lookup
+ _set_load_ds
_get_ds _clean_ds
_debug
_pack_subfields_hash
#use base qw/WebPAC::Common/;
use Data::Dump qw/dump/;
use Storable qw/dclone/;
+use Carp qw/confess/;
# debugging warn(s)
my $debug = 0;
=head1 VERSION
-Version 0.20
+Version 0.21
=cut
-our $VERSION = '0.20';
+our $VERSION = '0.21';
=head1 SYNOPSIS
Return data structure
my $ds = WebPAC::Normalize::data_structure(
- lookup => $lookup_variable,
+ lookup => $lookup_hash,
row => $row,
rules => $normalize_pl_config,
marc_encoding => 'utf-8',
config => $config,
+ load_ds_coderef => sub {
+ my ($database,$input,$mfn) = shift;
+ $store->load_ds( database => $database, input => $input, id => $mfn );
+ },
);
Options C<row>, C<rules> and C<log> are mandatory while all
other are optional.
+C<load_ds_coderef> is closure only used when executing lookups, so they will
+die if it's not defined.
+
This function will B<die> if normalizastion can't be evaled.
Since this function isn't exported you have to call it with
=cut
+my $load_ds_coderef;
+
sub data_structure {
my $arg = {@_};
die "need normalisation argument" unless ($arg->{rules});
no strict 'subs';
- _set_lookup( $arg->{lookup} ) if (defined( $arg->{lookup} ));
+ _set_lookup( $arg->{lookup} );
_set_rec( $arg->{row} );
- _set_config( $arg->{config} ) if (defined( $arg->{config} ));
+ _set_config( $arg->{config} );
_clean_ds( %{ $arg } );
+ $load_ds_coderef = $arg->{load_ds_coderef};
+
eval "$arg->{rules}";
die "error evaling $arg->{rules}: $@\n" if ($@);
return $lookup;
}
+=head2 _set_load_ds
+
+Setup code reference which will return L<data_structure> from
+L<WebPAC::Store>
+
+ _set_load_ds(sub {
+ my ($database,$input,$mfn) = @_;
+ $store->load_ds( database => $database, input => $input, id => $mfn );
+ });
+
+=cut
+
+sub _set_load_ds {
+ my $coderef = shift;
+ confess "argument isn't CODE" unless ref($coderef) eq 'CODE';
+
+ $load_ds_coderef = $coderef;
+}
+
=head2 _get_marc_fields
Get all fields defined by calls to C<marc>
Consult lookup hashes for some value
- @v = lookup( $v );
- @v = lookup( @v );
+ @v = lookup(
+ sub {
+ 'ffkk/peri/mfn'.rec('000')
+ },
+ 'ffkk','peri','200-a-200-e',
+ sub {
+ first(rec(200,'a')).' '.first(rec('200','e'))
+ }
+ );
-FIXME B<currently this one is broken!>
+Code like above will be B<automatically generated> using L<WebPAC::Parse> from
+normal lookup definition in C<conf/lookup/something.pl> which looks like:
+
+ lookup(
+ # which results to return from record recorded in lookup
+ sub { 'ffkk/peri/mfn' . rec('000') },
+ # from which database and input
+ 'ffkk','peri',
+ # such that following values match
+ sub { first(rec(200,'a')) . ' ' . first(rec('200','e')) },
+ # if this part is missing, we will try to match same fields
+ # from lookup record and current one, or you can override
+ # which records to use from current record using
+ sub { rec('900','x') . ' ' . rec('900','y') },
+ )
+
+You can think about this lookup as SQL (if that helps):
+
+ select
+ sub { what }
+ from
+ database, input
+ where
+ sub { filter from lookuped record }
+ having
+ sub { optional filter on current record }
+
+Easy as pie, right?
=cut
sub lookup {
- my $k = shift or return;
- return unless (defined($lookup->{$k}));
- if (ref($lookup->{$k}) eq 'ARRAY') {
- return @{ $lookup->{$k} };
- } else {
- return $lookup->{$k};
+ my ($what, $database, $input, $key, $having) = @_;
+
+ confess "lookup needs 5 arguments: what, database, input, key, having" unless ($#_ == 4);
+
+ warn "# lookup ($database, $input, $key)\n";
+ return unless (defined($lookup->{$database}->{$input}->{$key}));
+
+ confess "lookup really need load_ds_coderef added to data_structure\n" unless ($load_ds_coderef);
+
+ my $mfns;
+ my @having = $having->();
+
+ warn "## having = ", dump( @having );
+
+ foreach my $h ( @having ) {
+ if (defined($lookup->{$database}->{$input}->{$key}->{$h})) {
+ warn "lookup for $database/$input/$key/$h return ",dump($lookup->{$database}->{$input}->{$key}->{$h}),"\n";
+ $mfns->{$_}++ foreach keys %{ $lookup->{$database}->{$input}->{$key}->{$h} };
+ }
}
+
+ return unless ($mfns);
+
+ my @mfns = sort keys %$mfns;
+
+ warn "# lookup loading $database/$input/$key mfn ", join(",",@mfns)," having ",dump(@having),"\n";
+
+ my $old_rec = $rec;
+ my @out;
+
+ foreach my $mfn (@mfns) {
+ $rec = $load_ds_coderef->( $database, $input, $mfn );
+
+ warn "got $database/$input/$mfn = ", dump($rec), $/;
+
+ my @vals = $what->();
+
+ push @out, ( @vals );
+
+ warn "lookup for mfn $mfn returned ", dump(@vals), $/;
+ }
+
+# if (ref($lookup->{$k}) eq 'ARRAY') {
+# return @{ $lookup->{$k} };
+# } else {
+# return $lookup->{$k};
+# }
+
+ $rec = $old_rec;
+
+ warn "## lookup returns = ", dump(@out), $/;
+
+ return @out;
}
=head2 save_into_lookup
-Save value into lookup.
+Save value into lookup. It associates current database, input
+and specific keys with one or more values which will be
+associated over MFN.
+
+MFN will be extracted from first occurence current of field 000
+in current record, or if it doesn't exist from L<_set_config> C<_mfn>.
- save_into_lookup($database,$input,$key,sub {
+ my $nr = save_into_lookup($database,$input,$key,sub {
# code which produce one or more values
});
-This function shouldn't be called directly, it's called from code created by L<WebPAC::Parser>.
+It returns number of items saved.
+
+This function shouldn't be called directly, it's called from code created by
+L<WebPAC::Parser>.
=cut
die "save_into_lookup needs input" unless defined($input);
die "save_into_lookup needs key" unless defined($key);
die "save_into_lookup needs CODE" unless ( defined($coderef) && ref($coderef) eq 'CODE' );
- my $mfn = $rec->{'000'}->[0] || die "mfn not defined or zero";
+
+warn "## save_into_lookup rec = ", dump($rec), " config = ", dump($config),"\n";
+
+ my $mfn =
+ defined($rec->{'000'}->[0]) ? $rec->{'000'}->[0] :
+ defined($config->{_mfn}) ? $config->{_mfn} :
+ die "mfn not defined or zero";
+
+ my $nr = 0;
+
foreach my $v ( $coderef->() ) {
$lookup->{$database}->{$input}->{$key}->{$v}->{$mfn}++;
warn "# saved lookup $database/$input/$key [$v] $mfn\n" if ($debug > 1);
+ $nr++;
}
+
+ return $nr;
}
=head2 config
projects / webpac2 / blobdiff