Class: ActiveFacts::Generate::Absorption

Inherits:
Object
  • Object
show all
Defined in:
lib/activefacts/generate/absorption.rb

Overview

Emit the absorption (Relational summary) for vocabulary. Not currently working, it relies on the old relational composition code. Invoke as

afgen --absorption[=options] <file>.cql"

Options are comma or space separated:

  • no_columns Don’t emit the columns

  • all Show ObjectTypes that are not tables as well

  • paths Show the references paths through which each column was defined

  • no_identifier Don’t show the identified_by columns for an EntityType

Instance Method Summary collapse

Constructor Details

#initialize(vocabulary, *options) ⇒ Absorption

:nodoc:



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# File 'lib/activefacts/generate/absorption.rb', line 23

def initialize(vocabulary, *options)  #:nodoc:
  @vocabulary = vocabulary
  @vocabulary = @vocabulary.Vocabulary.values[0] if ActiveFacts::API::Constellation === @vocabulary
  @no_columns = options.include? "no_columns"
  @paths = options.include? "paths"
  @no_identifier = options.include? "no_identifier"
end

Instance Method Details

#generate(out = $>) ⇒ Object

:nodoc:



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# File 'lib/activefacts/generate/absorption.rb', line 31

def generate(out = $>)  #:nodoc:
	@out = out
  no_absorption = 0
  single_absorption_vts = 0
  single_absorption_ets = 0
  multi_absorption_vts = 0
  multi_absorption_ets = 0
  @vocabulary.tables
  @vocabulary.all_object_type.sort_by{|c| c.name}.each do |o|
    next if !o.is_table
    show(o)
  end
end

#show(object_type) ⇒ Object

:nodoc:



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# File 'lib/activefacts/generate/absorption.rb', line 45

def show object_type        #:nodoc:
  indices = object_type.indices
  pk = indices.select(&:is_primary)[0]
  indices = indices.clone
  indices.delete pk
  @out.puts "#{object_type.name}: #{
#            "[#{object_type.indices.size} indices] "
#          } #{
      object_type.columns.sort_by do |column|
        column.name(nil)
      end.map do |column|
        index_nrs =
          [pk && pk.columns.include?(column) ? "*" : nil] +
          (0...indices.size).select{|i| indices[i].columns.include?(column)}.map{|i| (i+1).to_i }
        index_nrs.compact!
        (@paths ? column.references.map{|r| r.to_names}.flatten : column.name(nil)) * '.' +
          (index_nrs.empty? ? "" : "["+index_nrs*""+"]")
      end*", "
    }"

end