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Contents
require 'marc_extensions'
module BerkeleyLibrary
module TIND
module Export
class Column
# @return [ColumnGroup] the group containing this column
attr_reader :column_group
# @return [Integer] the index of this column in the group
attr_reader :col_in_group
# Initializes a new column
#
# @param column_group [ColumnGroup] the group containing this column
# @param col_in_group [Integer] the index of this column in the group
def initialize(column_group, col_in_group)
@column_group = column_group
@col_in_group = col_in_group
end
def header
# NOTE: that TIND "-#" suffixes must be unique by tag, not tag + ind1 + ind2
@header ||= "#{column_group.prefix}#{subfield_code}-#{1 + column_group.index_in_tag}"
end
def subfield_code
@subfield_code ||= column_group.subfield_codes[col_in_group]
end
def value_at(row)
column_group.value_at(row, col_in_group)
end
def can_edit?
@can_edit ||= Filter.can_edit?(
column_group.tag,
column_group.ind1,
column_group.ind2,
subfield_code
)
end
def each_value(include_header: false)
return to_enum(:each_value, include_header: include_header) unless block_given?
yield header if include_header
column_group.row_count.times { |row| yield value_at(row) }
end
end
end
end
end
Version data entries
10 entries across 10 versions & 1 rubygems