Module: Queries::Concerns::Attributes

Extended by:
ActiveSupport::Concern
Includes:
Helpers
Included in:
Queries::CollectingEvent::Filter, DwcOccurrence::Filter, Loan::Filter, Namespace::Filter, Source::Filter
Defined in:
lib/queries/concerns/attributes.rb

Overview

Helpers and facets for queries that loop through ATTRIBUTES

!! Implementing filters must define ATTRIBUTES before the inclusion of this concern, like:

ATTRIBUTES = ::Loan.core_attributes.map(&:to_sym).freeze

TODO: macro a method to explicitly set ATTRIBUTES and eliminate need for definition location dependency.

This may not be worth it as various models have slight exceptions.

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Helpers

#boolean_param, #integer_param, #split_pairs, #split_repeated_pairs, #tri_value_array

Class Method Details

.and_clauses ⇒ Object 



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# File 'lib/queries/concerns/attributes.rb', line 178

def self.and_clauses
  [
    :attribute_clauses,
    :attribute_or_clauses
  ]
end

.merge_clauses ⇒ Object 



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# File 'lib/queries/concerns/attributes.rb', line 185

def self.merge_clauses
  [
    :attribute_facet
  ]
end

.params ⇒ Object 



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# File 'lib/queries/concerns/attributes.rb', line 14

def self.params
  [
    :attribute_exact_pair,
    :attribute_wildcard_pair,
    :wildcard_attribute,
    :any_value_attribute,
    :no_value_attribute,
    :attribute_name,
    :attribute_value,
    :attribute_value_type,
    :attribute_value_negator,
    :attribute_combine_logic,
    attribute_exact_pair: [],
    attribute_wildcard_pair: [],
    wildcard_attribute: [],
    any_value_attribute: [],
    no_value_attribute: [],
    attribute_name: [],
    attribute_value: [],
    attribute_value_type: [],
    attribute_value_negator: [],
    attribute_combine_logic: [],
  ]
end

Instance Method Details

#attribute_clauses ⇒ Object 



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# File 'lib/queries/concerns/attributes.rb', line 226

def attribute_clauses
  c = []
  self.class::ATTRIBUTES.each do |a|
    if any_value_attribute.include?(a)
      c.push table[a].not_eq(nil)
    elsif no_value_attribute.include?(a)
      c.push table[a].eq(nil)
    else
      v = send(a)
      if v.present?
        if wildcard_attribute.include?(a)
          c.push Arel::Nodes::NamedFunction.new('CAST', [table[a].as('TEXT')]).matches('%' + v.to_s + '%')
        else
          c.push table[a].eq(v)
        end
      end
    end
  end

  a = c.shift
  c.each do |b|
    a = a.and(b)
  end

  a
end

#attribute_facet ⇒ Object 



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# File 'lib/queries/concerns/attributes.rb', line 253

def attribute_facet
  return nil if attribute_name.empty?

  queries = []
  attribute_value_type.map(&:to_sym).each_with_index do |value_type, i|
    name = attribute_name[i]
    next if name.blank?

    attribute = name.to_sym
    next unless self.class::ATTRIBUTES.include?(attribute)

    value = attribute_value[i]
    negator = attribute_value_negator[i]

    q = nil
    case value_type
    when :exact, :wildcard
      value_clause = if value_type == :exact
        table[attribute].eq(value)
      else
        Arel::Nodes::NamedFunction.new('CAST', [table[attribute].as('TEXT')])
          .matches("%#{value}%")
      end

      value_clause = value_clause.not if negator
      q = referenced_klass.where(value_clause)
    when :any, :no
      has_attr = (value_type == :any && !negator) || (value_type == :no && negator)
      value_clause = has_attr ? table[attribute].not_eq(nil) : table[attribute].eq(nil)
      q = referenced_klass.where(value_clause)
    end

    queries << q if q
  end

  return nil if queries.empty?

  q = queries.first
  attribute_combine_logic.each_with_index do |c, i|
    next_q = queries[i + 1]
    break if next_q.nil?

    if c.nil?
      q = referenced_klass_intersection([q, next_q])
    elsif c == true
      q = referenced_klass_union([q, next_q])
    else
      q = q.where.not(id: next_q)
    end
  end

  q
end

#attribute_or_clauses ⇒ Object 



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# File 'lib/queries/concerns/attributes.rb', line 191

def attribute_or_clauses
  return nil if attribute_wildcard_pair.empty? && attribute_exact_pair.empty?

  w = nil
  if attribute_wildcard_pair.present?
    arr = []
    attribute_wildcard_pair.each do |p|
      attr, v = [p[0], p[1]]
      arr.push Arel::Nodes::NamedFunction.new('CAST', [table[attr].as('TEXT')]).matches('%' + v.to_s + '%')
    end

    w = arr.shift
    arr.each do |b|
      w = w.or(b)
    end
  end

  e = nil
  if attribute_exact_pair.present?
    arr = []
    attribute_exact_pair.each do |p|
      attr, v = [p[0], p[1]]
      arr.push table[attr].eq(v)
    end

    e = arr.shift
    arr.each do |b|
      e = e.or(b)
    end
  end

  return w.and(e) if w.present? && e.present?
  w || e
end

#set_attribute_row_params(params) ⇒ Object 



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# File 'lib/queries/concerns/attributes.rb', line 156

def set_attribute_row_params(params)
  row_count = [params[:attribute_name]].flatten.compact.count
  return if (
    row_count == 0 ||
    [params[:attribute_value]].flatten.compact.count != row_count ||
    [params[:attribute_value_type]].flatten.compact.count != row_count ||
    tri_value_array(params[:attribute_value_negator]).length != row_count ||
    tri_value_array(params[:attribute_combine_logic]).length != row_count
  )

  @attribute_name =
    [params[:attribute_name]].flatten.compact
  @attribute_value =
    [params[:attribute_value]].flatten.compact
  @attribute_value_type =
    [params[:attribute_value_type]].flatten.compact
  @attribute_value_negator =
    tri_value_array(params[:attribute_value_negator])
  @attribute_combine_logic =
    tri_value_array(params[:attribute_combine_logic])
end

#set_attributes_params(params) ⇒ Object 



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# File 'lib/queries/concerns/attributes.rb', line 142

def set_attributes_params(params)
  @attribute_exact_pair = params[:attribute_exact_pair]
  @attribute_wildcard_pair = params[:attribute_wildcard_pair]
  @wildcard_attribute = params[:wildcard_attribute]
  @any_value_attribute = params[:any_value_attribute]
  @no_value_attribute = params[:no_value_attribute]

  set_attribute_row_params(params)

  self.class::ATTRIBUTES.each do |a|
    send("#{a}=", params[a.to_sym])
  end
end