class ActiveFedora::Associations::FilterAssociation

def association_scope

index/query the condition in Solr
We can't create an association scope on here until we can figure a way to

def association_scope
  nil
end

def concat(records)

Raises:

(ArgumentError) - if one of the records doesn't match the prescribed condition

Parameters:

records (Array) -- a list of records to append to the current association

def concat(records)
  records.flatten.each { |r| validate_assertion!(r) }
  extending_from.concat(records)
end

def count_records

def count_records
  ids_reader.length
end

def existing_matching_records

def existing_matching_records
  extending_from.reader.to_a.select do |r|
    validate_assertion(r)
  end
end

def extending_from

def extending_from
  owner.association(options.fetch(:extending_from))
end

def find_target

def find_target
  existing_matching_records
end

def find_target?

def find_target?
  true
end

def ids_reader

def ids_reader
  load_target
  super
end

def target

extending_from.target could change and we want to reflect those changes
target should never be cached as part of this objects state, because

def target
  find_target
end

def validate_assertion(record)

def validate_assertion(record)
  record.send(options.fetch(:condition))
end

def validate_assertion!(record)

def validate_assertion!(record)
  raise ArgumentError, "#{record.class} with ID: #{record.id} was expected to #{options.fetch(:condition)}, but it was false" unless validate_assertion(record)
end

def writer(records)