NAME
MARC::Moose::Lint::Checker - A Moose::Role to 'lint' biblio record
VERSION
version 1.0.45
DESCRIPTION
A MARC biblio record, MARC21, UNIMARC, whatever, can be validated against rules. By extending this class, you defines your own validation rules. Then the 'lint' object can be given to a MARC::Moose::Record or a MARC::Moose::Reader
METHODS
check( record )
This method checks a biblio record, based on the current 'lint' object. The biblio record is a MARC::Moose::Record object. An array of validation errors/warnings is returned. Those errors are just plain text explanation on the reasons why the record doesn't comply with validation rules. This role could be applied directly to a MARC::Moose::Record object or to MARC::Moose::Parser object.
SYNOPSYS
package LintPPN;
use Moose;
with 'MARC::Moose::Lint::Checker'
sub check {
my ($self, $record) = @_;
my @warnings = ();
if ( my $ppn = $record->field('001') ) {
if ( $ppn->value !~ /^PPN[0-9]*$/ ) {
push @warning, "Invalid PPN in 001 field";
}
}
else {
push @warning, "No 001 field";
}
return @warnings;
}
package Main;
use MARC::Moose::Reader::File::Iso2709;
use MARC::Moose::Parser::Iso2709;
# Dump as text all biblio records without valid PPN
my $reader = $MARC::Moose::Reader::File::Iso2709(
file => 'biblio.mrc',
parser => MARC::Moose::Parser::Iso2709->new( lint => LintPPN->new() ));
while ( my $record = $reader->read() ) {
if ( my @warnings = $record->check() ) {
say $record->as('Text');
}
}SEE ALSO
AUTHOR
Frédéric Demians <f.demians@tamil.fr>
COPYRIGHT AND LICENSE
This software is copyright (c) 2022 by Frédéric Demians.
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.