NAME
SYNOPSIS
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 $field->index_end; # '#'DESCRIPTION
MARC::Spec::Field is the field specification of a MARC::Spec.
See MARCspec - A common MARC record path language for further details on the syntax.
METHODS
Some methods are inherited from MARC::Spec::Structure.
new(Str)
Create a new MARC::Spec::Field instance. Parameter must be a valid MARCspec field tag.
add_subspec(MARC::Spec::Subspec)
Appends a subspec to the array of the attribute subspecs. Parameter must be an instance of MARC::Spec::Subspec.
Inherited from MARC::Spec::Structure.
add_subspecs(ArrayRef[MARC::Spec::Subspec])
Appends subspecs to the array of the attribute subspecs. Parameter must be an ArrayRef and elements must be instances of MARC::Spec::Subspec.
Inherited from MARC::Spec::Structure.
to_string
Returns the spec as a string.
Inherited from MARC::Spec::Structure.
PREDICATES
has_subspecs
Returns true if attribute subspecs has a value and false otherwise.
Inherited from MARC::Spec::Structure.
ATTRIBUTES
Some attributes are inherited from MARC::Spec::Structure.
base
Obligatory. The base Field spec without subspecs.
Inherited from MARC::Spec::Structure.
tag
Obligatory. The field tag.
char_pos
If defined, the character position or range. Only present if MARC::Spec::Field::$char_start is defined.
Inherited from MARC::Spec::Structure.
char_start
If defined, the beginning character position of a character position or range.
Inherited from MARC::Spec::Structure.
char_end
If defined, the ending character position of a character position or range. Only present if MARC::Spec::Field::$char_start is defined.
Inherited from MARC::Spec::Structure.
char_length
The difference of MARC::Spec::Field::$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.
Inherited from MARC::Spec::Structure.
index_start
Obligatory. The beginning index of field repetitions. Maybe a positiv integer or the character '#'. Default is 0.
Inherited from MARC::Spec::Structure.
index_end
Obligatory. The ending index of field repetitions. Maybe a positiv integer or the character '#'. Default is '#'.
Inherited from MARC::Spec::Structure.
index_length
Obligatory. The difference of MARC::Spec::Field::$index_start and MARC::Spec::Field::$index_end if both are numeric. Default is -1.
Inherited from MARC::Spec::Structure.
indicator1
If defined, the indicator 1 of a data field. Only present if MARC::Spec::Field::$char_start is not defnied.
indicator2
If defined, the indicator 2 of a data field. Only present if MARC::Spec::Field::$char_start is not defnied.
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.
Inherited from MARC::Spec::Structure.
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::Subspec, MARC::Spec::Structure, MARC::Spec::Comparisonstring, MARC::Spec::Parser