Class: ConceptQL::Operators::ConditionOccurrenceSourceVocabularyOperatorUnion

Inherits:
ConditionOccurrenceSourceVocabularyOperator show all
Defined in:
lib/conceptql/operators/condition_occurrence_source_vocabulary_operator_union.rb

Instance Attribute Summary

Attributes inherited from Operator

#arguments, #errors, #nodifier, #options, #upstreams, #values

Instance Method Summary collapse

Methods inherited from ConditionOccurrenceSourceVocabularyOperator

#concept_column, #source_column, #table, #unionable?

Methods inherited from SourceVocabularyOperator

#describe_code, #query, #query_cols, #unionable?

Methods inherited from VocabularyOperator

#code_list, #domain

Methods inherited from Operator

#annotate, #cast_column, #code_list, codes_should_match, #columns, #create_upstreams, #data_model, #database_type, default_query_columns, #domains, #dup_values, #dynamic_columns, #evaluate, inherited, #initialize, #inspect, #label, new, #operator_name, #optimized, query_columns, register, require_column, #required_columns, #scope, #select_it, #setup_select, #sql, #stream, #to_op, #unionable?, #upstreams_valid?, #valid?

Methods included from Metadatable

#allows_many_upstreams, #allows_one_upstream, #argument, #auto_label, #basic_type, #category, #derive_metadata_from_validations, #desc, #domains, #get_desc, #humanized_class_name, #inherited, #just_class_name, #no_desc, #option, #predominant_domains, #pref_name, #preferred_name, #reset_categories, #standard_description, #to_metadata, #validate_at_least_one_upstream_to_metadata, #validate_at_most_one_upstream_to_metadata, #validate_no_arguments_to_metadata, #validate_no_upstreams_to_metadata, #validate_one_upstream_to_metadata, #validate_required_options_to_metadata, #warn_about_missing_metadata

Constructor Details

This class inherits a constructor from ConceptQL::Operators::Operator

Instance Method Details

#conditions(db) ⇒ Object 



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# File 'lib/conceptql/operators/condition_occurrence_source_vocabulary_operator_union.rb', line 22

def conditions(db)
  Sequel.|(*values.map { |v| v.conditions(db) })
end

#union(other) ⇒ Object 



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# File 'lib/conceptql/operators/condition_occurrence_source_vocabulary_operator_union.rb', line 6

def union(other)
  if other.is_a?(self.class)
    dup_values(values + other.values)
  else
    same, different = values.partition{|x| x.is_a?(other.class)}
    case same.length
    when 0
      dup_values(different + [other])
    when 1
      dup_values(different + [same.first.union(other)])
    else
      raise "multiple ConditionOccurrenceSourceVocabularyOperator subclass instances of same class in union"
    end
  end
end