Sha256: 240051fe2e7893f3797d0fc320757c8ae3e9b785d6ec471b271915745e9657e4
Contents?: true
Size: 1.23 KB
Versions: 16
Compression:
Stored size: 1.23 KB
Contents
module ActiveFedora
# a Hash of properties that have changed and their present values
class ChangeSet
attr_reader :object, :graph, :changed_attributes
# @param [ActiveFedora::Base] object The resource that has associations and properties
# @param [RDF::Graph] graph The RDF graph that holds the current state
# @param [Array] changed_attributes A list of properties that have changed
def initialize(object, graph, changed_attributes)
@object = object
@graph = graph
@changed_attributes = changed_attributes
end
def empty?
changes.empty?
end
def changes
@changes ||= changed_attributes.each_with_object({}) do |key, result|
if m = /^.*_ids?$/.match(key)
predicate = object.association(m[0].to_sym).reflection.predicate
result[predicate] = graph.query(predicate: predicate)
elsif object.class.properties.keys.include?(key)
predicate = graph.reflections.reflect_on_property(key).predicate
result[predicate] = graph.query(predicate: predicate)
elsif object.local_attributes.include?(key)
raise "Unable to find a graph predicate corresponding to the attribute: \"#{key}\""
end
end
end
end
end
Version data entries
16 entries across 16 versions & 1 rubygems