Class: Abrupt::Transformation::Base

Inherits:
Object
  • Object
show all
Includes:
RDF
Defined in:
lib/abrupt/transformation/base.rb

Overview

base class

Constant Summary collapse

SCHEMA_MAPPING = 
{
    integer: :to_i,
    number: :to_f,
    string: :to_s,
    boolean: [:kind_of?, Object]
}

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(parent_uri, uri, values = {}) ⇒ Base

Initializes Transformer for Individual Statement for parent_uri & uri. Readability.new([

  'Website',
  'http://www.rikscha-mainz.de',
  'Page',
  'http://www.rikscha-mainz.de/Angebote'
], [
  'State',
  'state54'
])

Parameters:

  • parent_uri (Array) —

    the parent uri in array structure of paths

  • uri (Array) —

    the uri as array structure of path and id



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# File 'lib/abrupt/transformation/base.rb', line 29

def initialize(parent_uri, uri, values = {})
  @parent_uri = parent_uri.to_a.map(&:remove_last_slashes)
  @uri = uri.to_a.map(&:remove_last_slashes)
  @values = values
  @result = []
end

Instance Attribute Details

#md5 ⇒ Object

Returns the value of attribute md5.



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# File 'lib/abrupt/transformation/base.rb', line 7

def md5
  @md5
end

#parent_uri ⇒ Object

Returns the value of attribute parent_uri.



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# File 'lib/abrupt/transformation/base.rb', line 7

def parent_uri
  @parent_uri
end

#result ⇒ Object

Returns the value of attribute result.



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# File 'lib/abrupt/transformation/base.rb', line 7

def result
  @result
end

#uri ⇒ Object

Returns the value of attribute uri.



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# File 'lib/abrupt/transformation/base.rb', line 7

def uri
  @uri
end

#values ⇒ Object

Returns the value of attribute values.



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# File 'lib/abrupt/transformation/base.rb', line 7

def values
  @values
end

Class Method Details

.customize_to_schema(values) ⇒ Object

rubocop:disable all



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# File 'lib/abrupt/transformation/base.rb', line 37

def self.customize_to_schema(values)
  @values = values
  keyname = name.split('::').last.downcase.to_sym
  schema_file = File.join Abrupt.root, 'assets', 'schema', 'v1', "#{keyname}.json"
  return values unless File.exist?(schema_file)
  schema = ::JSON.load(File.read(schema_file)).deep_symbolize_keys
  # :button => ..., :text => {:type => "array", :items => {...}}
  schema[:properties][keyname][:properties].each do |state_key, state_schema|
    set_value(state_key, state_schema, [':state', ":#{keyname}"])
  end
  @values
end

.set_value(key, schema, ref) ⇒ Object 



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# File 'lib/abrupt/transformation/base.rb', line 50

def self.set_value(key, schema, ref)
  ref << ":#{key}"
  key_string = '[' + ref.join('][') + ']'
  value = eval "@values#{key_string}" rescue nil
  return unless value
  case schema[:type]
  when 'array'
    case schema[:items][:type]
    when 'object'
      # :name => { :type => :string }
      schema[:items][:properties].each do |arr_key, arr_val|
        eval "@values#{key_string} = [value].flatten.compact" unless value.is_a? Array
        value.each_with_index do |_obj, i|
          set_value arr_key, arr_val, ref.dup + [i]
        end
      end
    end
  when 'object'
    schema[:properties].each do |schema_key, schema_value|
      set_value(schema_key, schema_value, ref.dup)
    end
  else
    if value.is_a? Array
      value.each_with_index do |val, i|
        eval "@values#{key_string}[i] = val.send(*SCHEMA_MAPPING[schema[:type].to_sym])"
      end
    else
      eval "@values#{key_string} = value.send(*SCHEMA_MAPPING[schema[:type].to_sym])"
    end
  end
end

Instance Method Details

#add_data_property(type, value, name = ) ⇒ Object 



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# File 'lib/abrupt/transformation/base.rb', line 135

def add_data_property(type, value, name = @values[:name])
  @result << Statement.new(resolve_uri(name), VOC[type], value)
end

#add_individual(name = , klass = nil) ⇒ Object 



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# File 'lib/abrupt/transformation/base.rb', line 128

def add_individual(name = @values[:name], klass = nil)
  klass ||= @uri.empty? ? class_name : @uri.first
  uri = resolve_uri(name)
  @result << Statement.new(uri, RDF.type, VOC[klass])
  @result << Statement.new(resolve_parent_uri, VOC["has#{klass}"], uri)
end

#add_individuals ⇒ Object

rubocop:enable all



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# File 'lib/abrupt/transformation/base.rb', line 84

def add_individuals
  add_individual
  return @result unless @values[keyname]
  @values[keyname].each do |k, v|
    s = k.to_s.eql?('language') ? "#{keyname}Language" : k
    add_data_property s, v
  end
  @result
end

#add_object_property(parent_uri, type, child_uri) ⇒ Object 



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# File 'lib/abrupt/transformation/base.rb', line 139

def add_object_property(parent_uri, type, child_uri)
  parent_uri = RDF::URI(parent_uri) if parent_uri.is_a?(String)
  @result << Statement.new(parent_uri, VOC["has#{type}"], child_uri)
end

#class_name ⇒ Object

Returns the class name



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# File 'lib/abrupt/transformation/base.rb', line 95

def class_name
  self.class.name.split('::').last
end

#keyname ⇒ Object

Returns the keyname @example: Readability.new(parent_uri, uri).keyname

=> :readability



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# File 'lib/abrupt/transformation/base.rb', line 103

def keyname
  class_name.downcase.to_sym
end

#resolve_parent_uri ⇒ Object 



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# File 'lib/abrupt/transformation/base.rb', line 111

def resolve_parent_uri
  RDF::URI(resolve_parent_uri_part)
end

#resolve_parent_uri_part ⇒ Object 



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# File 'lib/abrupt/transformation/base.rb', line 107

def resolve_parent_uri_part
  "#{VOC}#{@parent_uri.join('/')}"
end

#resolve_uri(name = nil) ⇒ Object 



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# File 'lib/abrupt/transformation/base.rb', line 123

def resolve_uri(name = nil)
  name ||= @uri.last
  RDF::URI(resolve_parent_uri_part + '/' + resolve_uri_part(name))
end

#resolve_uri_part(name) ⇒ Object 



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# File 'lib/abrupt/transformation/base.rb', line 115

def resolve_uri_part(name)
  if @uri.empty?
    "#{class_name}/#{name}"
  else
    "#{@uri.join('/')}"
  end
end