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package WebPAC::Normalize; |
package WebPAC::Normalize; |
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use Exporter 'import'; |
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our @EXPORT = qw/ |
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_set_ds _set_lookup |
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_set_load_row |
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_get_ds _clean_ds |
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_debug |
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_pack_subfields_hash |
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to |
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search_display search display sorted |
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rec1 rec2 rec |
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frec frec_eq frec_ne |
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regex prefix suffix surround |
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first lookup join_with |
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save_into_lookup |
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split_rec_on |
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get set |
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count |
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row |
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rec_array |
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/; |
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use warnings; |
use warnings; |
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use strict; |
use strict; |
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use base 'WebPAC::Common'; |
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use Data::Dumper; |
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=head1 NAME |
#use base qw/WebPAC::Common/; |
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use Data::Dump qw/dump/; |
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use Carp qw/confess/; |
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# debugging warn(s) |
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my $debug = 0; |
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_debug( $debug ); |
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# FIXME |
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use WebPAC::Normalize::ISBN; |
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push @EXPORT, ( 'isbn_10', 'isbn_13' ); |
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use WebPAC::Normalize::MARC; |
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push @EXPORT, ( qw/ |
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marc marc_indicators marc_repeatable_subfield |
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marc_compose marc_leader marc_fixed |
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marc_duplicate marc_remove marc_count |
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marc_original_order |
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marc_template |
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/); |
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WebPAC::Normalize - data mungling for normalisation |
use Storable qw/dclone/; |
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=head1 VERSION |
=head1 NAME |
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Version 0.01 |
WebPAC::Normalize - describe normalisaton rules using sets |
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=cut |
=cut |
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our $VERSION = '0.01'; |
our $VERSION = '0.36'; |
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=head1 SYNOPSIS |
=head1 SYNOPSIS |
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This package contains code that mungle data to produce normalized format. |
This module uses C<conf/normalize/*.pl> files to perform normalisation |
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from input records using perl functions which are specialized for set |
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processing. |
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Sets are implemented as arrays, and normalisation file is valid perl, which |
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means that you check it's validity before running WebPAC using |
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C<perl -c normalize.pl>. |
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Normalisation can generate multiple output normalized data. For now, supported output |
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types (on the left side of definition) are: C<search_display>, C<display>, C<search> and |
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C<marc>. |
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It contains several assumptions: |
=head1 FUNCTIONS |
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=over |
Functions which start with C<_> are private and used by WebPAC internally. |
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All other functions are available for use within normalisation rules. |
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=item * |
=head2 data_structure |
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format of fields is defined using C<v123^a> notation for repeatable fields |
Return data structure |
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or C<s123^a> for single (or first) value, where C<123> is field number and |
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C<a> is subfield. |
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=item * |
my $ds = WebPAC::Normalize::data_structure( |
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lookup => $lookup_hash, |
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row => $row, |
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rules => $normalize_pl_config, |
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marc_encoding => 'utf-8', |
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config => $config, |
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load_row_coderef => sub { |
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my ($database,$input,$mfn) = @_; |
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$store->load_row( database => $database, input => $input, id => $mfn ); |
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}, |
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); |
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source data records (C<$rec>) have unique identifiers in field C<000> |
Options C<row>, C<rules> and C<log> are mandatory while all |
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other are optional. |
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=item * |
C<load_row_coderef> is closure only used when executing lookups, so they will |
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die if it's not defined. |
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optional C<eval{length('v123^a') == 3}> tag at B<beginning of format> will be |
This function will B<die> if normalizastion can't be evaled. |
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perl code that is evaluated before producing output (value of field will be |
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interpolated before that) |
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=item * |
Since this function isn't exported you have to call it with |
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C<WebPAC::Normalize::data_structure>. |
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optional C<filter{filter_name}> at B<begining of format> will apply perl |
=cut |
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code defined as code ref on format after field substitution to producing |
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output |
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=item * |
my $load_row_coderef; |
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optional C<lookup{...}> will be then performed. See C<WebPAC::Lookups>. |
sub data_structure { |
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my $arg = {@_}; |
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=item * |
die "need row argument" unless ($arg->{row}); |
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die "need normalisation argument" unless ($arg->{rules}); |
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at end, optional C<format>s rules are resolved. Format rules are similar to |
_set_lookup( $arg->{lookup} ) if defined($arg->{lookup}); |
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C<sprintf> and can also contain C<lookup{...}> which is performed after |
_set_ds( $arg->{row} ); |
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values are inserted in format. |
_set_config( $arg->{config} ) if defined($arg->{config}); |
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_clean_ds( %{ $arg } ); |
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$load_row_coderef = $arg->{load_row_coderef}; |
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=back |
no strict 'subs'; |
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no warnings 'redefine'; |
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eval "$arg->{rules};"; |
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die "error evaling $arg->{rules}: $@\n" if ($@); |
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This also describes order in which transformations are applied (eval, |
return _get_ds(); |
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filter, lookup, format) which is important to undestand when deciding how to |
} |
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solve your data mungling and normalisation process. |
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=head2 _set_ds |
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Set current record hash |
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_set_ds( $rec ); |
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=head1 FUNCTIONS |
=cut |
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=head2 new |
my $rec; |
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Create new normalisation object |
sub _set_ds { |
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$rec = shift or die "no record hash"; |
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$WebPAC::Normalize::MARC::rec = $rec; |
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} |
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my $n = new WebPAC::Normalize::Something( |
=head2 |
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filter => { |
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'filter_name_1' => sub { |
my $rec = _get_rec(); |
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# filter code |
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return length($_); |
=cut |
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}, ... |
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}, |
sub _get_rec { $rec }; |
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db => $db_obj, |
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lookup_regex => $lookup->regex, |
=head2 _set_config |
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lookup => $lookup_obj, |
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); |
Set current config hash |
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_set_config( $config ); |
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Magic keys are: |
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=over 4 |
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Parametar C<filter> defines user supplied snippets of perl code which can |
=item _ |
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be use with C<filter{...}> notation. |
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Recommended parametar C<lookup_regex> is used to enable parsing of lookups |
Code of current database |
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in structures. If you pass this parametar, you must also pass C<lookup> |
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which is C<WebPAC::Lookup> object. |
=item _mfn |
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Current MFN |
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=back |
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=cut |
=cut |
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sub new { |
my $config; |
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my $class = shift; |
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my $self = {@_}; |
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bless($self, $class); |
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my $r = $self->{'lookup_regex'} ? 1 : 0; |
sub _set_config { |
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my $l = $self->{'lookup'} ? 1 : 0; |
$config = shift; |
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} |
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my $log = $self->_get_logger(); |
=head2 _get_ds |
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# those two must be in pair |
Return hash formatted as data structure |
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if ( ($r & $l) != ($r || $l) ) { |
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my $log = $self->_get_logger(); |
my $ds = _get_ds(); |
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$log->logdie("lookup_regex and lookup must be in pair"); |
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} |
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$log->logdie("lookup must be WebPAC::Lookup object") if ($self->{'lookup'} && ! $self->{'lookup'}->isa('WebPAC::Lookup')); |
=cut |
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my $out; |
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$self ? return $self : return undef; |
sub _get_ds { |
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#warn "## out = ",dump($out); |
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return $out; |
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} |
} |
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=head2 _clean_ds |
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=head2 data_structure |
Clean data structure hash for next record |
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Create in-memory data structure which represents normalized layout from |
_clean_ds(); |
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C<conf/normalize/*.xml>. |
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This structures are used to produce output. |
=cut |
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sub _clean_ds { |
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my $a = {@_}; |
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$out = undef; |
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WebPAC::Normalize::MARC::_clean(); |
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} |
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my @ds = $webpac->data_structure($rec); |
=head2 _set_lookup |
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B<Note: historical oddity follows> |
Set current lookup hash |
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This method will also set C<< $webpac->{'currnet_filename'} >> if there is |
_set_lookup( $lookup ); |
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C<< <filename> >> tag and C<< $webpac->{'headline'} >> if there is |
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C<< <headline> >> tag. |
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=cut |
=cut |
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sub data_structure { |
my $lookup; |
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my $self = shift; |
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my $log = $self->_get_logger(); |
sub _set_lookup { |
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$lookup = shift; |
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} |
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my $rec = shift; |
=head2 _get_lookup |
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$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
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my $cache_file; |
Get current lookup hash |
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if ($self->{'db'}) { |
my $lookup = _get_lookup(); |
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my @ds = $self->{'db'}->load_ds($rec); |
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$log->debug("load_ds( rec = ", sub { Dumper($rec) }, ") = ", sub { Dumper(@ds) }); |
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return @ds if ($#ds > 0); |
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$log->debug("cache miss, creating"); |
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} |
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undef $self->{'currnet_filename'}; |
=cut |
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undef $self->{'headline'}; |
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my @sorted_tags; |
sub _get_lookup { |
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if ($self->{tags_by_order}) { |
return $lookup; |
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@sorted_tags = @{$self->{tags_by_order}}; |
} |
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} else { |
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@sorted_tags = sort { $self->_sort_by_order } keys %{$self->{'import_xml'}->{'indexer'}}; |
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$self->{tags_by_order} = \@sorted_tags; |
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} |
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my @ds; |
=head2 _set_load_row |
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$log->debug("tags: ",sub { join(", ",@sorted_tags) }); |
Setup code reference which will return L<data_structure> from |
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L<WebPAC::Store> |
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foreach my $field (@sorted_tags) { |
_set_load_row(sub { |
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my ($database,$input,$mfn) = @_; |
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$store->load_row( database => $database, input => $input, id => $mfn ); |
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}); |
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my $row; |
=cut |
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#print "field $field [",$self->{'tag'},"] = ",Dumper($self->{'import_xml'}->{'indexer'}->{$field}->{$self->{'tag'}}); |
sub _set_load_row { |
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my $coderef = shift; |
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confess "argument isn't CODE" unless ref($coderef) eq 'CODE'; |
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foreach my $tag (@{$self->{'import_xml'}->{'indexer'}->{$field}->{$self->{'tag'}}}) { |
$load_row_coderef = $coderef; |
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my $format; |
} |
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$log->logdie("expected tag HASH and got $tag") unless (ref($tag) eq 'HASH'); |
=head2 _debug |
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$format = $tag->{'value'} || $tag->{'content'}; |
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$log->debug("format: $format"); |
Change level of debug warnings |
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my @v; |
_debug( 2 ); |
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if ($self->{'lookup_regex'} && $format =~ $self->{'lookup_regex'}) { |
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@v = $self->fill_in_to_arr($rec,$format); |
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} else { |
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@v = $self->parse_to_arr($rec,$format); |
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} |
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next if (! @v); |
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if ($tag->{'sort'}) { |
=cut |
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@v = $self->sort_arr(@v); |
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} |
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# use format? |
sub _debug { |
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if ($tag->{'format_name'}) { |
my $l = shift; |
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@v = map { $self->apply_format($tag->{'format_name'},$tag->{'format_delimiter'},$_) } @v; |
return $debug unless defined($l); |
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} |
warn "debug level $l",$/ if ($l > 0); |
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$debug = $l; |
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$WebPAC::Normalize::MARC::debug = $debug; |
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} |
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if ($field eq 'filename') { |
=head1 Functions to create C<data_structure> |
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$self->{'current_filename'} = join('',@v); |
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$log->debug("filename: ",$self->{'current_filename'}); |
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} elsif ($field eq 'headline') { |
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$self->{'headline'} .= join('',@v); |
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$log->debug("headline: ",$self->{'headline'}); |
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next; # don't return headline in data_structure! |
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} |
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# delimiter will join repeatable fields |
Those functions generally have to first in your normalization file. |
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if ($tag->{'delimiter'}) { |
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@v = ( join($tag->{'delimiter'}, @v) ); |
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} |
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# default types |
=head2 to |
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my @types = qw(display swish); |
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# override by type attribute |
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@types = ( $tag->{'type'} ) if ($tag->{'type'}); |
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foreach my $type (@types) { |
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# append to previous line? |
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$log->debug("type: $type ",sub { join(" ",@v) }, $row->{'append'} || 'no append'); |
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if ($tag->{'append'}) { |
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# I will delimit appended part with |
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# delimiter (or ,) |
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my $d = $tag->{'delimiter'}; |
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# default delimiter |
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$d ||= " "; |
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my $last = pop @{$row->{$type}}; |
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$d = "" if (! $last); |
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$last .= $d . join($d, @v); |
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push @{$row->{$type}}, $last; |
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} else { |
Generic way to set values for some name |
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push @{$row->{$type}}, @v; |
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} |
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} |
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to('field-name', 'name-value' => rec('200','a') ); |
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} |
There are many helpers defined below which might be easier to use. |
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if ($row) { |
=cut |
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$row->{'tag'} = $field; |
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# TODO: name_sigular, name_plural |
sub to { |
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my $name = $self->{'import_xml'}->{'indexer'}->{$field}->{'name'}; |
my $type = shift or confess "need type -- BUG?"; |
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$row->{'name'} = $name ? $self->_x($name) : $field; |
my $name = shift or confess "needs name as first argument"; |
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my @o = grep { defined($_) && $_ ne '' } @_; |
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# post-sort all values in field |
return unless (@o); |
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if ($self->{'import_xml'}->{'indexer'}->{$field}->{'sort'}) { |
$out->{$name}->{$type} = \@o; |
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$log->warn("sort at field tag not implemented"); |
} |
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} |
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push @ds, $row; |
=head2 search_display |
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$log->debug("row $field: ",sub { Dumper($row) }); |
Define output for L<search> and L<display> at the same time |
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} |
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} |
search_display('Title', rec('200','a') ); |
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$self->{'db'}->save_ds( |
=cut |
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ds => \@ds, |
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current_filename => $self->{'current_filename'}, |
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headline => $self->{'headline'}, |
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) if ($self->{'db'}); |
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$log->debug("ds: ", sub { Dumper(@ds) }); |
sub search_display { |
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my $name = shift or die "search_display needs name as first argument"; |
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my @o = grep { defined($_) && $_ ne '' } @_; |
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return unless (@o); |
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$out->{$name}->{search} = \@o; |
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$out->{$name}->{display} = \@o; |
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} |
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=head2 tag |
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return @ds; |
Old name for L<search_display>, it will probably be removed at one point. |
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=cut |
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sub tag { |
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search_display( @_ ); |
320 |
} |
} |
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=head2 parse |
=head2 display |
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Perform smart parsing of string, skipping delimiters for fields which aren't |
Define output just for I<display> |
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defined. It can also eval code in format starting with C<eval{...}> and |
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return output or nothing depending on eval code. |
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my $text = $webpac->parse($rec,'eval{"v901^a" eq "Deskriptor"}descriptor: v250^a', $i); |
@v = display('Title', rec('200','a') ); |
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=cut |
=cut |
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sub parse { |
sub display { to( 'display', @_ ) } |
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my $self = shift; |
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my ($rec, $format_utf8, $i) = @_; |
=head2 search |
333 |
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return if (! $format_utf8); |
Prepare values just for I<search> |
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my $log = $self->_get_logger(); |
@v = search('Title', rec('200','a') ); |
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$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
=cut |
339 |
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$i = 0 if (! $i); |
sub search { to( 'search', @_ ) } |
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my $format = $self->_x($format_utf8) || $log->logconfess("can't convert '$format_utf8' from UTF-8 to ",$self->{'code_page'}); |
=head2 sorted |
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my @out; |
Insert into lists which will be automatically sorted |
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sorted('Title', rec('200','a') ); |
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=cut |
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sub sorted { to( 'sorted', @_ ) } |
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=head2 row |
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Insert new row of data into output module |
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356 |
|
row( column => 'foo', column2 => 'bar' ); |
357 |
|
|
358 |
$log->debug("format: $format"); |
=cut |
359 |
|
|
360 |
|
use Data::Dump qw/dump/; |
361 |
|
|
362 |
|
sub row { |
363 |
|
die "array doesn't have odd number of elements but $#_: ",dump( @_ ) if $#_ % 2 == 1; |
364 |
|
my $table = shift @_; |
365 |
|
push @{ $out->{'_rows'}->{$table} }, {@_}; |
366 |
|
} |
367 |
|
|
368 |
|
|
369 |
|
=head1 Functions to extract data from input |
370 |
|
|
371 |
|
This function should be used inside functions to create C<data_structure> described |
372 |
|
above. |
373 |
|
|
374 |
my $eval_code; |
=head2 _pack_subfields_hash |
|
# remove eval{...} from beginning |
|
|
$eval_code = $1 if ($format =~ s/^eval{([^}]+)}//s); |
|
375 |
|
|
376 |
my $filter_name; |
@subfields = _pack_subfields_hash( $h ); |
377 |
# remove filter{...} from beginning |
$subfields = _pack_subfields_hash( $h, 1 ); |
|
$filter_name = $1 if ($format =~ s/^filter{([^}]+)}//s); |
|
378 |
|
|
379 |
my $prefix; |
Return each subfield value in array or pack them all together and return scalar |
380 |
my $all_found=0; |
with subfields (denoted by C<^>) and values. |
381 |
|
|
382 |
while ($format =~ s/^(.*?)(v|s)(\d+)(?:\^(\w))?//s) { |
=cut |
383 |
|
|
384 |
|
sub _pack_subfields_hash { |
385 |
|
|
386 |
|
warn "## _pack_subfields_hash( ",dump(@_), " )\n" if ($debug > 1); |
387 |
|
|
388 |
|
my ($hash,$include_subfields) = @_; |
389 |
|
|
390 |
my $del = $1 || ''; |
# sanity and ease of use |
391 |
$prefix ||= $del if ($all_found == 0); |
return $hash if (ref($hash) ne 'HASH'); |
392 |
|
|
393 |
# repeatable index |
my $h = dclone( $hash ); |
|
my $r = $i; |
|
|
$r = 0 if (lc("$2") eq 's'); |
|
394 |
|
|
395 |
my $found = 0; |
if ( defined($h->{subfields}) ) { |
396 |
my $tmp = $self->get_data(\$rec,$3,$4,$r,\$found); |
my $sfs = delete $h->{subfields} || die "no subfields?"; |
397 |
|
my @out; |
398 |
|
while (@$sfs) { |
399 |
|
my $sf = shift @$sfs; |
400 |
|
push @out, '^' . $sf if ($include_subfields); |
401 |
|
my $o = shift @$sfs; |
402 |
|
if ($o == 0 && ref( $h->{$sf} ) ne 'ARRAY' ) { |
403 |
|
# single element subfields are not arrays |
404 |
|
#warn "====> $sf $o / $#$sfs ", dump( $sfs, $h->{$sf} ), "\n"; |
405 |
|
|
406 |
if ($found) { |
push @out, $h->{$sf}; |
407 |
push @out, $del; |
} else { |
408 |
push @out, $tmp; |
#warn "====> $sf $o / $#$sfs ", dump( $sfs, $h->{$sf} ), "\n"; |
409 |
$all_found += $found; |
push @out, $h->{$sf}->[$o]; |
410 |
|
} |
411 |
|
} |
412 |
|
if ($include_subfields) { |
413 |
|
return join('', @out); |
414 |
|
} else { |
415 |
|
return @out; |
416 |
|
} |
417 |
|
} else { |
418 |
|
if ($include_subfields) { |
419 |
|
my $out = ''; |
420 |
|
foreach my $sf (sort keys %$h) { |
421 |
|
if (ref($h->{$sf}) eq 'ARRAY') { |
422 |
|
$out .= '^' . $sf . join('^' . $sf, @{ $h->{$sf} }); |
423 |
|
} else { |
424 |
|
$out .= '^' . $sf . $h->{$sf}; |
425 |
|
} |
426 |
|
} |
427 |
|
return $out; |
428 |
|
} else { |
429 |
|
# FIXME this should probably be in alphabetical order instead of hash order |
430 |
|
values %{$h}; |
431 |
} |
} |
432 |
} |
} |
433 |
|
} |
434 |
|
|
435 |
return if (! $all_found); |
=head2 rec1 |
436 |
|
|
437 |
my $out = join('',@out); |
Return all values in some field |
438 |
|
|
439 |
if ($out) { |
@v = rec1('200') |
|
# add rest of format (suffix) |
|
|
$out .= $format; |
|
440 |
|
|
441 |
# add prefix if not there |
TODO: order of values is probably same as in source data, need to investigate that |
|
$out = $prefix . $out if ($out !~ m/^\Q$prefix\E/); |
|
442 |
|
|
443 |
$log->debug("result: $out"); |
=cut |
|
} |
|
444 |
|
|
445 |
if ($eval_code) { |
sub rec1 { |
446 |
my $eval = $self->fill_in($rec,$eval_code,$i) || return; |
my $f = shift; |
447 |
$log->debug("about to eval{$eval} format: $out"); |
warn "rec1($f) = ", dump( $rec->{$f} ), $/ if ($debug > 1); |
448 |
return if (! $self->_eval($eval)); |
return unless (defined($rec) && defined($rec->{$f})); |
449 |
} |
warn "rec1($f) = ", dump( $rec->{$f} ), $/ if ($debug > 1); |
450 |
|
if (ref($rec->{$f}) eq 'ARRAY') { |
451 |
if ($filter_name && $self->{'filter'}->{$filter_name}) { |
my @out; |
452 |
$log->debug("about to filter{$filter_name} format: $out"); |
foreach my $h ( @{ $rec->{$f} } ) { |
453 |
$out = $self->{'filter'}->{$filter_name}->($out); |
if (ref($h) eq 'HASH') { |
454 |
return unless(defined($out)); |
push @out, ( _pack_subfields_hash( $h ) ); |
455 |
$log->debug("filter result: $out"); |
} else { |
456 |
|
push @out, $h; |
457 |
|
} |
458 |
|
} |
459 |
|
return @out; |
460 |
|
} elsif( defined($rec->{$f}) ) { |
461 |
|
return $rec->{$f}; |
462 |
} |
} |
|
|
|
|
return $out; |
|
463 |
} |
} |
464 |
|
|
465 |
=head2 parse_to_arr |
=head2 rec2 |
466 |
|
|
467 |
Similar to C<parse>, but returns array of all repeatable fields |
Return all values in specific field and subfield |
468 |
|
|
469 |
my @arr = $webpac->parse_to_arr($rec,'v250^a'); |
@v = rec2('200','a') |
470 |
|
|
471 |
=cut |
=cut |
472 |
|
|
473 |
sub parse_to_arr { |
sub rec2 { |
474 |
my $self = shift; |
my $f = shift; |
475 |
|
return unless (defined($rec && $rec->{$f})); |
476 |
|
my $sf = shift; |
477 |
|
warn "rec2($f,$sf) = ", dump( $rec->{$f} ), $/ if ($debug > 1); |
478 |
|
return map { |
479 |
|
if (ref($_->{$sf}) eq 'ARRAY') { |
480 |
|
@{ $_->{$sf} }; |
481 |
|
} else { |
482 |
|
$_->{$sf}; |
483 |
|
} |
484 |
|
} grep { ref($_) eq 'HASH' && defined $_->{$sf} } @{ $rec->{$f} }; |
485 |
|
} |
486 |
|
|
487 |
|
=head2 rec |
488 |
|
|
489 |
my ($rec, $format_utf8) = @_; |
syntaxtic sugar for |
490 |
|
|
491 |
my $log = $self->_get_logger(); |
@v = rec('200') |
492 |
|
@v = rec('200','a') |
493 |
|
|
494 |
$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
If rec() returns just single value, it will |
495 |
return if (! $format_utf8); |
return scalar, not array. |
496 |
|
|
497 |
my $i = 0; |
=cut |
|
my @arr; |
|
498 |
|
|
499 |
while (my $v = $self->parse($rec,$format_utf8,$i++)) { |
sub rec { |
500 |
push @arr, $v; |
my @out; |
501 |
|
if ($#_ == 0) { |
502 |
|
@out = rec1(@_); |
503 |
|
} elsif ($#_ == 1) { |
504 |
|
@out = rec2(@_); |
505 |
|
} |
506 |
|
if ($#out == 0 && ! wantarray) { |
507 |
|
return $out[0]; |
508 |
|
} elsif (@out) { |
509 |
|
return @out; |
510 |
|
} else { |
511 |
|
return ''; |
512 |
} |
} |
513 |
|
} |
514 |
|
|
515 |
$log->debug("format '$format_utf8' returned ",--$i," elements: ", sub { join(" | ",@arr) }) if (@arr); |
=head2 frec |
516 |
|
|
517 |
return @arr; |
Returns first value from field |
|
} |
|
518 |
|
|
519 |
|
$v = frec('200'); |
520 |
|
$v = frec('200','a'); |
521 |
|
|
522 |
=head2 fill_in |
=cut |
523 |
|
|
524 |
Workhourse of all: takes record from in-memory structure of database and |
sub frec { |
525 |
strings with placeholders and returns string or array of with substituted |
my @out = rec(@_); |
526 |
values from record. |
warn "rec(",dump(@_),") has more than one return value, ignoring\n" if $#out > 0; |
527 |
|
return shift @out; |
528 |
|
} |
529 |
|
|
530 |
|
=head2 frec_eq |
531 |
|
|
532 |
my $text = $webpac->fill_in($rec,'v250^a'); |
=head2 frec_ne |
533 |
|
|
534 |
Optional argument is ordinal number for repeatable fields. By default, |
Check if first values from two fields are same or different |
|
it's assume to be first repeatable field (fields are perl array, so first |
|
|
element is 0). |
|
|
Following example will read second value from repeatable field. |
|
535 |
|
|
536 |
my $text = $webpac->fill_in($rec,'Title: v250^a',1); |
if ( frec_eq( 900 => 'a', 910 => 'c' ) ) { |
537 |
|
# values are same |
538 |
|
} else { |
539 |
|
# values are different |
540 |
|
} |
541 |
|
|
542 |
This function B<does not> perform parsing of format to inteligenty skip |
Strictly speaking C<frec_eq> and C<frec_ne> wouldn't be needed if you |
543 |
delimiters before fields which aren't used. |
could write something like: |
544 |
|
|
545 |
This method will automatically decode UTF-8 string to local code page |
if ( frec( '900','a' ) eq frec( '910','c' ) ) { |
546 |
if needed. |
# yada tada |
547 |
|
} |
548 |
|
|
549 |
|
but you can't since our parser L<WebPAC::Parser> will remove all whitespaces |
550 |
|
in order to parse text and create invalid function C<eqfrec>. |
551 |
|
|
552 |
=cut |
=cut |
553 |
|
|
554 |
sub fill_in { |
sub frec_eq { |
555 |
my $self = shift; |
my ( $f1,$sf1, $f2, $sf2 ) = @_; |
556 |
|
return (rec( $f1, $sf1 ))[0] eq (rec( $f2, $sf2 ))[0]; |
557 |
|
} |
558 |
|
|
559 |
my $log = $self->_get_logger(); |
sub frec_ne { |
560 |
|
return ! frec_eq( @_ ); |
561 |
|
} |
562 |
|
|
563 |
|
=head2 regex |
564 |
|
|
565 |
my $rec = shift || $log->logconfess("need data record"); |
Apply regex to some or all values |
|
my $format = shift || $log->logconfess("need format to parse"); |
|
|
# iteration (for repeatable fields) |
|
|
my $i = shift || 0; |
|
566 |
|
|
567 |
$log->logdie("infitite loop in format $format") if ($i > ($self->{'max_mfn'} || 9999)); |
@v = regex( 's/foo/bar/g', @v ); |
568 |
|
|
569 |
# FIXME remove for speedup? |
=cut |
|
$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
|
570 |
|
|
571 |
if (utf8::is_utf8($format)) { |
sub regex { |
572 |
$format = $self->_x($format); |
my $r = shift; |
573 |
|
my @out; |
574 |
|
#warn "r: $r\n", dump(\@_); |
575 |
|
foreach my $t (@_) { |
576 |
|
next unless ($t); |
577 |
|
eval "\$t =~ $r"; |
578 |
|
push @out, $t if ($t && $t ne ''); |
579 |
} |
} |
580 |
|
return @out; |
581 |
|
} |
582 |
|
|
583 |
my $found = 0; |
=head2 prefix |
584 |
|
|
585 |
my $eval_code; |
Prefix all values with a string |
|
# remove eval{...} from beginning |
|
|
$eval_code = $1 if ($format =~ s/^eval{([^}]+)}//s); |
|
586 |
|
|
587 |
my $filter_name; |
@v = prefix( 'my_', @v ); |
|
# remove filter{...} from beginning |
|
|
$filter_name = $1 if ($format =~ s/^filter{([^}]+)}//s); |
|
588 |
|
|
589 |
# do actual replacement of placeholders |
=cut |
|
# repeatable fields |
|
|
$format =~ s/v(\d+)(?:\^(\w))?/$self->get_data(\$rec,$1,$2,$i,\$found)/ges; |
|
|
# non-repeatable fields |
|
|
$format =~ s/s(\d+)(?:\^(\w))?/$self->get_data(\$rec,$1,$2,0,\$found)/ges; |
|
590 |
|
|
591 |
if ($found) { |
sub prefix { |
592 |
$log->debug("format: $format"); |
my $p = shift; |
593 |
if ($eval_code) { |
return @_ unless defined( $p ); |
594 |
my $eval = $self->fill_in($rec,$eval_code,$i); |
return map { $p . $_ } grep { defined($_) } @_; |
|
return if (! $self->_eval($eval)); |
|
|
} |
|
|
if ($filter_name && $self->{'filter'}->{$filter_name}) { |
|
|
$log->debug("filter '$filter_name' for $format"); |
|
|
$format = $self->{'filter'}->{$filter_name}->($format); |
|
|
return unless(defined($format)); |
|
|
$log->debug("filter result: $format"); |
|
|
} |
|
|
# do we have lookups? |
|
|
if ($self->{'lookup'}) { |
|
|
if ($self->{'lookup'}->can('lookup')) { |
|
|
return $self->{'lookup'}->lookup($format); |
|
|
} else { |
|
|
$log->warn("Have lookup object but can't invoke lookup method"); |
|
|
} |
|
|
} else { |
|
|
return $format; |
|
|
} |
|
|
} else { |
|
|
return; |
|
|
} |
|
595 |
} |
} |
596 |
|
|
597 |
|
=head2 suffix |
598 |
|
|
599 |
=head2 fill_in_to_arr |
suffix all values with a string |
|
|
|
|
Similar to C<fill_in>, but returns array of all repeatable fields. Usable |
|
|
for fields which have lookups, so they shouldn't be parsed but rather |
|
|
C<fill_id>ed. |
|
600 |
|
|
601 |
my @arr = $webpac->fill_in_to_arr($rec,'[v900];;[v250^a]'); |
@v = suffix( '_my', @v ); |
602 |
|
|
603 |
=cut |
=cut |
604 |
|
|
605 |
sub fill_in_to_arr { |
sub suffix { |
606 |
my $self = shift; |
my $s = shift; |
607 |
|
return @_ unless defined( $s ); |
608 |
|
return map { $_ . $s } grep { defined($_) } @_; |
609 |
|
} |
610 |
|
|
611 |
|
=head2 surround |
612 |
|
|
613 |
my ($rec, $format_utf8) = @_; |
surround all values with a two strings |
614 |
|
|
615 |
my $log = $self->_get_logger(); |
@v = surround( 'prefix_', '_suffix', @v ); |
616 |
|
|
617 |
$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
=cut |
|
return if (! $format_utf8); |
|
618 |
|
|
619 |
my $i = 0; |
sub surround { |
620 |
my @arr; |
my $p = shift; |
621 |
|
my $s = shift; |
622 |
|
$p = '' unless defined( $p ); |
623 |
|
$s = '' unless defined( $s ); |
624 |
|
return map { $p . $_ . $s } grep { defined($_) } @_; |
625 |
|
} |
626 |
|
|
627 |
while (my @v = $self->fill_in($rec,$format_utf8,$i++)) { |
=head2 first |
|
push @arr, @v; |
|
|
} |
|
628 |
|
|
629 |
$log->debug("format '$format_utf8' returned ",--$i," elements: ", sub { join(" | ",@arr) }) if (@arr); |
Return first element |
630 |
|
|
631 |
|
$v = first( @v ); |
632 |
|
|
633 |
|
=cut |
634 |
|
|
635 |
return @arr; |
sub first { |
636 |
|
my $r = shift; |
637 |
|
return $r; |
638 |
} |
} |
639 |
|
|
640 |
|
=head2 lookup |
641 |
|
|
642 |
=head2 get_data |
Consult lookup hashes for some value |
643 |
|
|
644 |
Returns value from record. |
@v = lookup( |
645 |
|
sub { |
646 |
|
'ffkk/peri/mfn'.rec('000') |
647 |
|
}, |
648 |
|
'ffkk','peri','200-a-200-e', |
649 |
|
sub { |
650 |
|
first(rec(200,'a')).' '.first(rec('200','e')) |
651 |
|
} |
652 |
|
); |
653 |
|
|
654 |
|
Code like above will be B<automatically generated> using L<WebPAC::Parse> from |
655 |
|
normal lookup definition in C<conf/lookup/something.pl> which looks like: |
656 |
|
|
657 |
my $text = $self->get_data(\$rec,$f,$sf,$i,\$found); |
lookup( |
658 |
|
# which results to return from record recorded in lookup |
659 |
|
sub { 'ffkk/peri/mfn' . rec('000') }, |
660 |
|
# from which database and input |
661 |
|
'ffkk','peri', |
662 |
|
# such that following values match |
663 |
|
sub { first(rec(200,'a')) . ' ' . first(rec('200','e')) }, |
664 |
|
# if this part is missing, we will try to match same fields |
665 |
|
# from lookup record and current one, or you can override |
666 |
|
# which records to use from current record using |
667 |
|
sub { rec('900','x') . ' ' . rec('900','y') }, |
668 |
|
) |
669 |
|
|
670 |
Arguments are: |
You can think about this lookup as SQL (if that helps): |
|
record reference C<$rec>, |
|
|
field C<$f>, |
|
|
optional subfiled C<$sf>, |
|
|
index for repeatable values C<$i>. |
|
671 |
|
|
672 |
Optinal variable C<$found> will be incremeted if there |
select |
673 |
is field. |
sub { what } |
674 |
|
from |
675 |
|
database, input |
676 |
|
where |
677 |
|
sub { filter from lookuped record } |
678 |
|
having |
679 |
|
sub { optional filter on current record } |
680 |
|
|
681 |
Returns value or empty string. |
Easy as pie, right? |
682 |
|
|
683 |
=cut |
=cut |
684 |
|
|
685 |
sub get_data { |
sub lookup { |
686 |
my $self = shift; |
my ($what, $database, $input, $key, $having) = @_; |
687 |
|
|
688 |
my ($rec,$f,$sf,$i,$found) = @_; |
confess "lookup needs 5 arguments: what, database, input, key, having\n" unless ($#_ == 4); |
689 |
|
|
690 |
if ($$rec->{$f}) { |
warn "## lookup ($database, $input, $key)", $/ if ($debug > 1); |
691 |
return '' if (! $$rec->{$f}->[$i]); |
return unless (defined($lookup->{$database}->{$input}->{$key})); |
692 |
no strict 'refs'; |
|
693 |
if ($sf && $$rec->{$f}->[$i]->{$sf}) { |
confess "lookup really need load_row_coderef added to data_structure\n" unless ($load_row_coderef); |
694 |
$$found++ if (defined($$found)); |
|
695 |
return $$rec->{$f}->[$i]->{$sf}; |
my $mfns; |
696 |
} elsif ($$rec->{$f}->[$i]) { |
my @having = $having->(); |
697 |
$$found++ if (defined($$found)); |
|
698 |
# it still might have subfield, just |
warn "## having = ", dump( @having ) if ($debug > 2); |
699 |
# not specified, so we'll dump all |
|
700 |
if ($$rec->{$f}->[$i] =~ /HASH/o) { |
foreach my $h ( @having ) { |
701 |
my $out; |
if (defined($lookup->{$database}->{$input}->{$key}->{$h})) { |
702 |
foreach my $k (keys %{$$rec->{$f}->[$i]}) { |
warn "lookup for $database/$input/$key/$h return ",dump($lookup->{$database}->{$input}->{$key}->{$h}),"\n" if ($debug); |
703 |
$out .= $$rec->{$f}->[$i]->{$k}." "; |
$mfns->{$_}++ foreach keys %{ $lookup->{$database}->{$input}->{$key}->{$h} }; |
|
} |
|
|
return $out; |
|
|
} else { |
|
|
return $$rec->{$f}->[$i]; |
|
|
} |
|
704 |
} |
} |
705 |
|
} |
706 |
|
|
707 |
|
return unless ($mfns); |
708 |
|
|
709 |
|
my @mfns = sort keys %$mfns; |
710 |
|
|
711 |
|
warn "# lookup loading $database/$input/$key mfn ", join(",",@mfns)," having ",dump(@having),"\n" if ($debug); |
712 |
|
|
713 |
|
my $old_rec = $rec; |
714 |
|
my @out; |
715 |
|
|
716 |
|
foreach my $mfn (@mfns) { |
717 |
|
$rec = $load_row_coderef->( $database, $input, $mfn ); |
718 |
|
|
719 |
|
warn "got $database/$input/$mfn = ", dump($rec), $/ if ($debug); |
720 |
|
|
721 |
|
my @vals = $what->(); |
722 |
|
|
723 |
|
push @out, ( @vals ); |
724 |
|
|
725 |
|
warn "lookup for mfn $mfn returned ", dump(@vals), $/ if ($debug); |
726 |
|
} |
727 |
|
|
728 |
|
# if (ref($lookup->{$k}) eq 'ARRAY') { |
729 |
|
# return @{ $lookup->{$k} }; |
730 |
|
# } else { |
731 |
|
# return $lookup->{$k}; |
732 |
|
# } |
733 |
|
|
734 |
|
$rec = $old_rec; |
735 |
|
|
736 |
|
warn "## lookup returns = ", dump(@out), $/ if ($debug); |
737 |
|
|
738 |
|
if ($#out == 0) { |
739 |
|
return $out[0]; |
740 |
} else { |
} else { |
741 |
return ''; |
return @out; |
742 |
} |
} |
743 |
} |
} |
744 |
|
|
745 |
|
=head2 save_into_lookup |
746 |
|
|
747 |
|
Save value into lookup. It associates current database, input |
748 |
|
and specific keys with one or more values which will be |
749 |
|
associated over MFN. |
750 |
|
|
751 |
=head2 apply_format |
MFN will be extracted from first occurence current of field 000 |
752 |
|
in current record, or if it doesn't exist from L<_set_config> C<_mfn>. |
753 |
|
|
754 |
Apply format specified in tag with C<format_name="name"> and |
my $nr = save_into_lookup($database,$input,$key,sub { |
755 |
C<format_delimiter=";;">. |
# code which produce one or more values |
756 |
|
}); |
757 |
|
|
758 |
my $text = $webpac->apply_format($format_name,$format_delimiter,$data); |
It returns number of items saved. |
759 |
|
|
760 |
Formats can contain C<lookup{...}> if you need them. |
This function shouldn't be called directly, it's called from code created by |
761 |
|
L<WebPAC::Parser>. |
762 |
|
|
763 |
=cut |
=cut |
764 |
|
|
765 |
sub apply_format { |
sub save_into_lookup { |
766 |
my $self = shift; |
my ($database,$input,$key,$coderef) = @_; |
767 |
|
die "save_into_lookup needs database" unless defined($database); |
768 |
|
die "save_into_lookup needs input" unless defined($input); |
769 |
|
die "save_into_lookup needs key" unless defined($key); |
770 |
|
die "save_into_lookup needs CODE" unless ( defined($coderef) && ref($coderef) eq 'CODE' ); |
771 |
|
|
772 |
my ($name,$delimiter,$data) = @_; |
warn "## save_into_lookup rec = ", dump($rec), " config = ", dump($config), $/ if ($debug > 2); |
773 |
|
|
774 |
my $log = $self->_get_logger(); |
my $mfn = |
775 |
|
defined($rec->{'000'}->[0]) ? $rec->{'000'}->[0] : |
776 |
|
defined($config->{_mfn}) ? $config->{_mfn} : |
777 |
|
die "mfn not defined or zero"; |
778 |
|
|
779 |
if (! $self->{'import_xml'}->{'format'}->{$name}) { |
my $nr = 0; |
780 |
$log->warn("<format name=\"$name\"> is not defined in ",$self->{'import_xml_file'}); |
|
781 |
return $data; |
foreach my $v ( $coderef->() ) { |
782 |
|
$lookup->{$database}->{$input}->{$key}->{$v}->{$mfn}++; |
783 |
|
warn "# saved lookup $database/$input/$key [$v] $mfn\n" if ($debug > 1); |
784 |
|
$nr++; |
785 |
} |
} |
786 |
|
|
787 |
$log->warn("no delimiter for format $name") if (! $delimiter); |
return $nr; |
788 |
|
} |
789 |
|
|
790 |
my $format = $self->_x($self->{'import_xml'}->{'format'}->{$name}->{'content'}) || $log->logdie("can't find format '$name'"); |
=head2 config |
791 |
|
|
792 |
my @data = split(/\Q$delimiter\E/, $data); |
Consult config values stored in C<config.yml> |
793 |
|
|
794 |
my $out = sprintf($format, @data); |
# return database code (key under databases in yaml) |
795 |
$log->debug("using format $name [$format] on $data to produce: $out"); |
$database_code = config(); # use _ from hash |
796 |
|
$database_name = config('name'); |
797 |
|
$database_input_name = config('input name'); |
798 |
|
|
799 |
|
Up to three levels are supported. |
800 |
|
|
801 |
|
=cut |
802 |
|
|
803 |
if ($self->{'lookup_regex'} && $out =~ $self->{'lookup_regex'}) { |
sub config { |
804 |
return $self->{'lookup'}->lookup($out); |
return unless ($config); |
805 |
|
|
806 |
|
my $p = shift; |
807 |
|
|
808 |
|
$p ||= ''; |
809 |
|
|
810 |
|
my $v; |
811 |
|
|
812 |
|
warn "### getting config($p)\n" if ($debug > 1); |
813 |
|
|
814 |
|
my @p = split(/\s+/,$p); |
815 |
|
if ($#p < 0) { |
816 |
|
$v = $config->{ '_' }; # special, database code |
817 |
} else { |
} else { |
818 |
return $out; |
|
819 |
|
my $c = dclone( $config ); |
820 |
|
|
821 |
|
foreach my $k (@p) { |
822 |
|
warn "### k: $k c = ",dump($c),$/ if ($debug > 1); |
823 |
|
if (ref($c) eq 'ARRAY') { |
824 |
|
$c = shift @$c; |
825 |
|
warn "config($p) taking first occurence of '$k', probably not what you wanted!\n"; |
826 |
|
last; |
827 |
|
} |
828 |
|
|
829 |
|
if (! defined($c->{$k}) ) { |
830 |
|
$c = undef; |
831 |
|
last; |
832 |
|
} else { |
833 |
|
$c = $c->{$k}; |
834 |
|
} |
835 |
|
} |
836 |
|
$v = $c if ($c); |
837 |
|
|
838 |
} |
} |
839 |
|
|
840 |
|
warn "## config( '$p' ) = ",dump( $v ),$/ if ($v && $debug); |
841 |
|
warn "config( '$p' ) is empty\n" if (! $v); |
842 |
|
|
843 |
|
return $v; |
844 |
} |
} |
845 |
|
|
846 |
=head2 sort_arr |
=head2 id |
847 |
|
|
848 |
|
Returns unique id of this record |
849 |
|
|
850 |
Sort array ignoring case and html in data |
$id = id(); |
851 |
|
|
852 |
my @sorted = $webpac->sort_arr(@unsorted); |
Returns C<42/2> for 2nd occurence of MFN 42. |
853 |
|
|
854 |
=cut |
=cut |
855 |
|
|
856 |
sub sort_arr { |
sub id { |
857 |
my $self = shift; |
my $mfn = $config->{_mfn} || die "no _mfn in config data"; |
858 |
|
return $mfn . ( WebPAC::Normalize::MARC::_created_marc_records() || '' ); |
859 |
|
} |
860 |
|
|
861 |
|
=head2 join_with |
862 |
|
|
863 |
my $log = $self->_get_logger(); |
Joins walues with some delimiter |
864 |
|
|
865 |
# FIXME add Schwartzian Transformation? |
$v = join_with(", ", @v); |
866 |
|
|
867 |
my @sorted = sort { |
=cut |
|
$a =~ s#<[^>]+/*>##; |
|
|
$b =~ s#<[^>]+/*>##; |
|
|
lc($b) cmp lc($a) |
|
|
} @_; |
|
|
$log->debug("sorted values: ",sub { join(", ",@sorted) }); |
|
868 |
|
|
869 |
return @sorted; |
sub join_with { |
870 |
|
my $d = shift; |
871 |
|
warn "### join_with('$d',",dump(@_),")\n" if ($debug > 2); |
872 |
|
my $v = join($d, grep { defined($_) && $_ ne '' } @_); |
873 |
|
return '' unless defined($v); |
874 |
|
return $v; |
875 |
} |
} |
876 |
|
|
877 |
|
=head2 split_rec_on |
878 |
|
|
879 |
|
Split record subfield on some regex and take one of parts out |
880 |
|
|
881 |
=head1 INTERNAL METHODS |
$a_before_semi_column = |
882 |
|
split_rec_on('200','a', /\s*;\s*/, $part); |
883 |
|
|
884 |
=head2 _sort_by_order |
C<$part> is optional number of element. First element is |
885 |
|
B<1>, not 0! |
886 |
|
|
887 |
Sort xml tags data structure accoding to C<order=""> attribute. |
If there is no C<$part> parameter or C<$part> is 0, this function will |
888 |
|
return all values produced by splitting. |
889 |
|
|
890 |
=cut |
=cut |
891 |
|
|
892 |
sub _sort_by_order { |
sub split_rec_on { |
893 |
my $self = shift; |
die "split_rec_on need (fld,sf,regex[,part]" if ($#_ < 2); |
894 |
|
|
895 |
my $va = $self->{'import_xml'}->{'indexer'}->{$a}->{'order'} || |
my ($fld, $sf, $regex, $part) = @_; |
896 |
$self->{'import_xml'}->{'indexer'}->{$a}; |
warn "### regex ", ref($regex), $regex, $/ if ($debug > 2); |
|
my $vb = $self->{'import_xml'}->{'indexer'}->{$b}->{'order'} || |
|
|
$self->{'import_xml'}->{'indexer'}->{$b}; |
|
897 |
|
|
898 |
return $va <=> $vb; |
my @r = rec( $fld, $sf ); |
899 |
|
my $v = shift @r; |
900 |
|
warn "### first rec($fld,$sf) = ",dump($v),$/ if ($debug > 2); |
901 |
|
|
902 |
|
return '' if ( ! defined($v) || $v =~ /^\s*$/); |
903 |
|
|
904 |
|
my @s = split( $regex, $v ); |
905 |
|
warn "## split_rec_on($fld,$sf,$regex,$part) = ",dump(@s),$/ if ($debug > 1); |
906 |
|
if ($part && $part > 0) { |
907 |
|
return $s[ $part - 1 ]; |
908 |
|
} else { |
909 |
|
return @s; |
910 |
|
} |
911 |
} |
} |
912 |
|
|
913 |
=head2 _x |
my $hash; |
914 |
|
|
915 |
Convert strings from C<conf/normalize/*.xml> encoding into application |
=head2 set |
916 |
specific encoding (optinally specified using C<code_page> to C<new> |
|
917 |
constructor). |
set( key => 'value' ); |
918 |
|
|
919 |
|
=cut |
920 |
|
|
921 |
my $text = $n->_x('normalize text string'); |
sub set { |
922 |
|
my ($k,$v) = @_; |
923 |
|
warn "## set ( $k => ", dump($v), " )", $/ if ( $debug ); |
924 |
|
$hash->{$k} = $v; |
925 |
|
}; |
926 |
|
|
927 |
This is a stub so that other modules doesn't have to implement it. |
=head2 get |
928 |
|
|
929 |
|
get( 'key' ); |
930 |
|
|
931 |
=cut |
=cut |
932 |
|
|
933 |
sub _x { |
sub get { |
934 |
my $self = shift; |
my $k = shift || return; |
935 |
return shift; |
my $v = $hash->{$k}; |
936 |
|
warn "## get $k = ", dump( $v ), $/ if ( $debug ); |
937 |
|
return $v; |
938 |
} |
} |
939 |
|
|
940 |
|
=head2 count |
941 |
|
|
942 |
|
if ( count( @result ) == 1 ) { |
943 |
|
# do something if only 1 result is there |
944 |
|
} |
945 |
|
|
946 |
=head1 AUTHOR |
=cut |
947 |
|
|
948 |
Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >> |
sub count { |
949 |
|
warn "## count ",dump(@_),$/ if ( $debug ); |
950 |
|
return @_ . ''; |
951 |
|
} |
952 |
|
|
953 |
=head1 COPYRIGHT & LICENSE |
=head2 rec_array |
954 |
|
|
955 |
Copyright 2005 Dobrica Pavlinusic, All Rights Reserved. |
Always return field as array |
956 |
|
|
957 |
This program is free software; you can redistribute it and/or modify it |
foreach my $d ( rec_array('field') { |
958 |
under the same terms as Perl itself. |
warn $d; |
959 |
|
} |
960 |
|
|
961 |
=cut |
=cut |
962 |
|
|
963 |
1; # End of WebPAC::DB |
sub rec_array { |
964 |
|
my $d = $rec->{ $_[0] }; |
965 |
|
return @$d if ref($d) eq 'ARRAY'; |
966 |
|
return ($d); |
967 |
|
} |
968 |
|
|
969 |
|
# END |
970 |
|
1; |