| MARC::Spec::Field(3pm) | User Contributed Perl Documentation | MARC::Spec::Field(3pm) |
MARC::Spec::Field - field specification
use MARC::Spec::Field;
my $field = MARC::Spec::Field->new('246');
say ref $field; # MARC::Spec::Field
say $field->tag; # 246
say $field->index_start; # 0
say $field->index_end; # '#'
MARC::Spec::Field is the field specification of a MARC::Spec.
See MARCspec - A common MARC record path language <http://marcspec.github.io/MARCspec/> for further details on the syntax.
Some methods are inherited from MARC::Spec::Structure.
Create a new MARC::Spec::Field instance. Parameter must be a valid MARCspec field tag.
Appends a subspec to the array of the attribute subspecs. Parameter must be an instance of MARC::Spec::Subspec.
Appends subspecs to the array of the attribute subspecs. Parameter must be an ArrayRef and elements must be instances of MARC::Spec::Subspec.
Returns the spec as a string.
Some predicates are inherited from MARC::Spec::Structure.
True if attribute char_start has an value and false otherwise.
True if attribute char_end has an value and false otherwise.
True if attribute char_pos has an value and false otherwise.
Returns true if attribute subspecs has an value and false otherwise.
Some attributes are inherited from MARC::Spec::Structure.
Obligatory. Scalar. The base Field spec without subspecs.
Obligatory. The field tag.
If defined, the character position or range. Only present if MARC::Spec::Field::$char_start is defined.
If defined, the beginning character position of a character position or range.
If defined, the ending character position of a character position or range. Only present if MARC::Spec::Field::$char_start is defined.
The difference of MARC::Spec::Field::$char_start and MARC::Spec::Field::$char_end if both are numeric (or else -1). Only present if MARC::Spec::Field::$char_start is defined.
If defined, the character position or range. Only present if MARC::Spec::Field::$char_start is defined.
Obligatory. The beginning index of field repetitions. Maybe a positiv integer or the character '#'. Default is 0.
Obligatory. The ending index of field repetitions. Maybe a positiv integer or the character '#'. Default is '#'.
Obligatory. The difference of MARC::Spec::Field::$index_start and MARC::Spec::Field::$index_end if both are numeric. Default is -1.
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.
Carsten Klee "<klee at cpan.org>"
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.
Please report any bugs to <https://github.com/MARCspec/MARC-Spec/issues>
| 2022-06-15 | perl v5.34.0 |