NAME

       MARC::Spec::Indicator - indicator specification

SYNOPSIS

           use MARC::Spec::Indicator;

           my $indicator = MARC::Spec::Indicator->new('2');
           say ref $indicator;           # MARC::Spec::Indicator
           say $field->position;         # 2

DESCRIPTION

       MARC::Spec::Indicator is the indicator specification of a MARC::Spec.

       See MARCspec - A common MARC record path language <http://marcspec.github.io/MARCspec/>
       for further details on the syntax.

METHODS

   new(Str)
       Create a new MARC::Spec::Indicator instance. Parameter must be a valid MARCspec
       indicatorPosition.

   add_subspec(MARC::Spec::Subspec)
       Appends a subspec to the array of the attribute subspecs. Parameter must be an instance of
       MARC::Spec::Subspec.

   add_subspecs(ArrayRef[MARC::Spec::Subspec])
       Appends subspecs to the array of the attribute subspecs. Parameter must be an ArrayRef and
       elements must be instances of MARC::Spec::Subspec.

   to_string
       Returns the spec as a string.

PREDICATES

   has_position
       True if attribute position has an value and false otherwise.

   has_subspecs
       Returns true if attribute subspecs has an value and false otherwise.

ATTRIBUTES

       Some attributes are inherited from MARC::Spec::Structure.

   base
       Obligatory. Scalar. The base Field spec without subspecs.

   position
       Obligatory. The indicator position.

   subspecs
       Optional. An array of instances of MARC::Spec::Subspec, thus all subspecs in this array
       MUST be validated as a combination with the boolean 'AND', and/or an array of arrays (AoA)
       of instances of MARC::Spec::Subspec, thus all subspecs in this AoA must be validated as a
       combination with the boolean 'OR'.

       See MARC::Spec::Subspec for description of attributes of MARC::Spec::Subspec.

AUTHOR

       Carsten Klee "<klee at cpan.org>"

CONTRIBUTORS

       •   Johann Rolschewski, "<jorol at cpan>"

COPYRIGHT AND LICENSE

       This software is copyright (c) 2016 by Carsten Klee.

       This is free software; you can redistribute it and/or modify it under the same terms as
       the Perl 5 programming language system itself.

BUGS

       Please report any bugs to <https://github.com/MARCspec/MARC-Spec/issues>

SEE ALSO

       •   MARC::Spec

       •   MARC::Spec::Field

       •   MARC::Spec::Subfield

       •   MARC::Spec::Subspec

       •   MARC::Spec::Structure

       •   MARC::Spec::Comparisonstring

       •   MARC::Spec::Parser