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module ActiveFedora
# Abstract class for attributes that are delegated to a serialized representation such as a NonRDFSource
#
# @abstract
# @attr [String] delegate_target
# @attr [String] at
# @attr [String] target_class
class StreamAttribute < DelegatedAttribute
attr_accessor :delegate_target, :at, :target_class
# @param [Symbol] field the field to find or create
# @param [Hash] args
# @option args [String] :delegate_target the path to the delegate
# @option args [Class] :klass the class to create
# @option args [true,false] :multiple (false) true for multi-value fields
# @option args [Array<Symbol>] :at path to a deep node
def initialize(field, args={})
super
self.delegate_target = args.fetch(:delegate_target)
self.target_class = args.fetch(:klass)
self.at = args.fetch(:at, nil)
end
# Gives the primary solr name for a column. If there is more than one indexer on the field definition, it gives the first
def primary_solr_name
@datastream ||= target_class.new
raise NoMethodError, "the file '#{target_class}' doesn't respond to 'primary_solr_name'" unless @datastream.respond_to?(:primary_solr_name)
@datastream.primary_solr_name(field, delegate_target)
end
def type
raise NoMethodError, "the file '#{target_class}' doesn't respond to 'type'" unless target_class.respond_to?(:type)
target_class.type(field)
end
private
def file_for_attribute(obj, delegate_target)
obj.attached_files[delegate_target] || raise(ArgumentError, "Undefined file: `#{delegate_target}' in property #{field}")
end
end
end
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10 entries across 10 versions & 1 rubygems