98 lines
3.1 KiB
Ruby
98 lines
3.1 KiB
Ruby
class DossierPreloader
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DEFAULT_BATCH_SIZE = 2000
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def initialize(dossiers)
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@dossiers = dossiers
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end
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def in_batches(size = DEFAULT_BATCH_SIZE)
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dossiers = @dossiers.to_a
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dossiers.each_slice(size) { |slice| load_dossiers(slice) }
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dossiers
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end
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def all
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dossiers = @dossiers.to_a
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load_dossiers(dossiers)
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dossiers
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end
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private
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# returns: { revision_id : { type_de_champ_id : position } }
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def positions
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@positions ||= ProcedureRevisionTypeDeChamp
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.where(revision_id: @dossiers.pluck(:revision_id).uniq)
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.select(:revision_id, :type_de_champ_id, :position)
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.group_by(&:revision_id)
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.transform_values do |coordinates|
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coordinates.index_by(&:type_de_champ_id).transform_values(&:position)
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end
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end
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def load_dossiers(dossiers)
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all_champs = Champ
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.includes(:type_de_champ, piece_justificative_file_attachment: :blob)
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.where(dossier_id: dossiers)
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.to_a
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load_etablissements(all_champs)
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children_champs, root_champs = all_champs.partition(&:child?)
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champs_by_dossier = root_champs.group_by(&:dossier_id)
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champs_by_dossier_by_parent = children_champs
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.group_by(&:dossier_id)
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.transform_values do |champs|
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champs.group_by(&:parent_id)
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end
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dossiers.each do |dossier|
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load_dossier(dossier, champs_by_dossier[dossier.id] || [], champs_by_dossier_by_parent[dossier.id] || {})
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end
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end
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def load_etablissements(champs)
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champs_siret = champs.filter(&:siret?)
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etablissements_by_id = Etablissement.where(id: champs_siret.map(&:etablissement_id).compact).index_by(&:id)
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champs_siret.each do |champ|
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etablissement = etablissements_by_id[champ.etablissement_id]
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champ.association(:etablissement).target = etablissement
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if etablissement
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etablissement.association(:champ).target = champ
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end
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end
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end
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def load_dossier(dossier, champs, children_by_parent = {})
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champs_public, champs_private = champs.partition(&:public?)
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load_champs(dossier, :champs, champs_public, dossier, children_by_parent)
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load_champs(dossier, :champs_private, champs_private, dossier, children_by_parent)
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# We need to do this because of the check on `Etablissement#champ` in
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# `Etablissement#libelle_for_export`. By assigning `nil` to `target` we mark association
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# as loaded and so the check on `Etablissement#champ` will not trigger n+1 query.
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if dossier.etablissement
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dossier.etablissement.association(:champ).target = nil
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end
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end
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def load_champs(parent, name, champs, dossier, children_by_parent)
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champs.each do |champ|
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champ.association(:dossier).target = dossier
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end
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parent.association(name).target = champs.sort_by do |champ|
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positions[dossier.revision_id][champ.type_de_champ_id]
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end
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# Load children champs
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champs.filter(&:repetition?).each do |parent_champ|
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champs = children_by_parent[parent_champ.id] || []
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parent_champ.association(:dossier).target = dossier
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load_champs(parent_champ, :champs, champs, dossier, children_by_parent)
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parent_champ.association(:champs).set_inverse_instance(parent_champ)
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end
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end
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end
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