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MARC::Spec::Field(3pm) | User Contributed Perl Documentation | MARC::Spec::Field(3pm) |
NAME¶
MARC::Spec::Field - field specificationSYNOPSIS¶
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 $field->index_end; # '#'
DESCRIPTION¶
MARC::Spec::Field is the field specification of a MARC::Spec.See MARCspec - A common MARC record path language <http://marcspec.github.io/MARCspec/> for further details on the syntax.
METHODS¶
Some methods are inherited from MARC::Spec::Structure.new(Str)¶
Create a new MARC::Spec::Field instance. Parameter must be a valid MARCspec field tag.add_subspec(MARC::Spec::Subspec)¶
Appends a subspec to the array of the attribute subspecs. Parameter must be an instance of MARC::Spec::Subspec.add_subspecs(ArrayRef[MARC::Spec::Subspec])¶
Appends subspecs to the array of the attribute subspecs. Parameter must be an ArrayRef and elements must be instances of MARC::Spec::Subspec.to_string¶
Returns the spec as a string.PREDICATES¶
Some predicates are inherited from MARC::Spec::Structure.has_char_start¶
True if attribute char_start has an value and false otherwise.has_char_end¶
True if attribute char_end has an value and false otherwise.has_char_pos¶
True if attribute char_pos has an value and false otherwise.has_subspecs¶
Returns true if attribute subspecs has an value and false otherwise.ATTRIBUTES¶
Some attributes are inherited from MARC::Spec::Structure.base¶
Obligatory. Scalar. The base Field spec without subspecs.tag¶
Obligatory. The field tag.char_pos¶
If defined, the character position or range. Only present if MARC::Spec::Field::$char_start is defined.char_start¶
If defined, the beginning character position of a character position or range.char_end¶
If defined, the ending character position of a character position or range. Only present if MARC::Spec::Field::$char_start is defined.char_length¶
The difference of MARC::Spec::Field::$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.char_pos¶
If defined, the character position or range. Only present if MARC::Spec::Field::$char_start is defined.index_start¶
Obligatory. The beginning index of field repetitions. Maybe a positiv integer or the character '#'. Default is 0.index_end¶
Obligatory. The ending index of field repetitions. Maybe a positiv integer or the character '#'. Default is '#'.index_length¶
Obligatory. The difference of MARC::Spec::Field::$index_start and MARC::Spec::Field::$index_end if both are numeric. Default is -1.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::Subfield
- MARC::Spec::Indicator
- MARC::Spec::Subspec
- MARC::Spec::Structure
- MARC::Spec::Comparisonstring
- MARC::Spec::Parser
2018-01-12 | perl v5.26.1 |