Class: Ddr::Models::YearFacet

Inherits:
Object
  • Object
show all
Defined in:
lib/ddr/models/year_facet.rb

Constant Summary collapse

EARLIEST_YEAR = 
1000
LATEST_YEAR = 
Date.today.year + 100
VALID_YEARS = 
(EARLIEST_YEAR..LATEST_YEAR)
VALUE_SEP = 
/;/
BETWEEN =

Between 1965 and 1968

Regexp.new '\A([Bb]etween\s+)(\d{4})(\s+and\s+)(\d{4})\??\z'
CIRCA =

circa 1920, ca. 1920, c1920 => 1920

Regexp.new '\b(circa\s+|ca?\.\s*|c(?=\d{4}[^\d]*))'
YEAR_RANGE =

1935-1940 => 1935/1940

Regexp.new '(?<=\d{4})-(?=\d{4})'
DECADE =

1920s, 1920s?, 192u, 192-, 192-?, 192? => 192x

Regexp.new '(?<=\A\d{3})(-\??|0s\??|u|\?)\z'
MONTH =

2010/01 => 2010-01

Regexp.new '(?<=\A\d{4})\/(?=\d{2}\z)'
START_DECADE =

193u/, 193x/ => 1930/

Regexp.new '(?<=\d{3})[uxX](?=\/)'
END_DECADE =

/194x, /194u => /1949

Regexp.new '(?<=\/\d{3})[uxX]'
CENTURY =

19uu => 19xx

Regexp.new '(?<=\A\d{2})uu(?=\z)'

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(object) ⇒ YearFacet

Returns a new instance of YearFacet.



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# File 'lib/ddr/models/year_facet.rb', line 42

def initialize(object)
  @object = object
end

Instance Attribute Details

#object ⇒ Object (readonly)

Returns the value of attribute object.



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# File 'lib/ddr/models/year_facet.rb', line 40

def object
  @object
end

Class Method Details

.call(object) ⇒ Object 



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# File 'lib/ddr/models/year_facet.rb', line 36

def self.call(object)
  new(object).call
end

Instance Method Details

#call ⇒ Object 



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# File 'lib/ddr/models/year_facet.rb', line 46

def call
  source_dates.each_with_object([]) do |date, facet_values|
    date.split(VALUE_SEP).each do |value|
      value.strip!
      edtf_date = convert_to_edtf(value)
      years = Array(edtf_years(edtf_date))
      years.select! { |year| VALID_YEARS.include?(year) }
      facet_values.push(*years)
    end
  end
end