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Contents
module ActiveFedora::Filter
class Association < ::ActiveFedora::Associations::CollectionAssociation
# @param [Array] records a list of records to replace the current association with
# @raise [ArgumentError] if one of the records doesn't match the prescribed condition
def writer(records)
records.each { |r| validate_assertion!(r) }
existing_matching_records.each do |r|
extending_from.delete(r)
end
extending_from.concat(records)
end
def delete(records)
extending_from.delete(records)
end
# @param [Array] records a list of records to append to the current association
# @raise [ArgumentError] if one of the records doesn't match the prescribed condition
def concat(records)
records.flatten.each { |r| validate_assertion!(r) }
extending_from.concat(records)
end
def ids_reader
load_target
super
end
def count_records
ids_reader.length
end
private
# target should never be cached as part of this objects state, because
# extending_from.target could change and we want to reflect those changes
def target
find_target
end
def find_target?
true
end
def find_target
existing_matching_records
end
# We can't create an association scope on here until we can figure a way to
# index/query the condition in Solr
def association_scope
nil
end
def existing_matching_records
extending_from.reader.to_a.select do |r|
validate_assertion(r)
end
end
def extending_from
owner.association(options.fetch(:extending_from))
end
def validate_assertion(record)
record.send(options.fetch(:condition))
end
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
end
end
Version data entries
10 entries across 10 versions & 1 rubygems