Module: ASModel::RepositoryTransfers

Defined in:
backend/app/model/ASModel_transfers.rb

Overview

Code for moving records between repositories

Defined Under Namespace

Modules: ClassMethods

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(base) ⇒ Object 



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# File 'backend/app/model/ASModel_transfers.rb', line 5

def self.included(base)
  base.extend(ClassMethods)
end

Instance Method Details

#transfer_to_repository(target_repository, transfer_group = []) ⇒ Object 



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# File 'backend/app/model/ASModel_transfers.rb', line 10

def transfer_to_repository(target_repository, transfer_group = [])
  if self.class.columns.include?(:repo_id)

    source_repository = Repository[self.repo_id]

    # Do the update in the cheapest way possible (bypassing save hooks, etc.)
    self.class.filter(id: self.id).update(repo_id: target_repository.id,
                                             system_mtime: Time.now)

    # Mark the old URI as deleted (if we can locate the source repo)
    if source_repository
      RequestContext.open(repo_id: source_repository.id) do
        Tombstone.create(uri: self.uri)
        DB.after_commit do
          RealtimeIndexing.record_delete(self.uri)
        end
      end
    end

    RequestContext.open(repo_id: target_repository.id) do
      # if this record has been in the target_repository before, it might have
      # an old tombstone lying around.
      Tombstone.filter(uri: self.uri).delete
      # Create an event if this is the top-level record being transferred.
      if transfer_group.empty?
        Event.for_repository_transfer(source_repository, target_repository, self)
      end
    end
  end

  # Tell any nested records to transfer themselves too
  self.class.nested_records.each do |nested_record_defn|
    association = nested_record_defn[:association][:name]
    association_dataset = self.send("#{association}_dataset".intern)
    nested_model = Kernel.const_get(nested_record_defn[:association][:class_name])

    association_dataset.select(Sequel.qualify(nested_model.table_name, :id)).all.each do |nested_record|
      nested_record.transfer_to_repository(target_repository, transfer_group + [self])
    end
  end
end