Sha256: 061e4469724daf6388cd63c5858bba9fe12c90b5bf74ff50146afa4ece7c27d6
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Size: 1.34 KB
Versions: 10
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Contents
module ActiveFedora::Aggregation
# A proxy which knows how to delete itself from an aggregation.
class OrderedProxy < SimpleDelegator
attr_reader :parent_node
# @param [#next, #prev, #delete] proxy The proxy to add behavior to.
# @param [#delete_proxy!] parent_node The aggregation to delete proxies
# from.
def initialize(proxy, parent_node)
@parent_node = parent_node
super(proxy)
end
def is_a?(klass)
__getobj__.is_a?(klass)
end
def delete(*args)
link_node_if_true do
super
end
end
protected
def link_node_if_true
# Have to precache these or AF tries to access this node?
next_or_null
prev_or_null
yield.tap do |result|
if result
# Have to reload proxies because otherwise you persist them with bad
# referencing triples.
[next_or_null, prev_or_null, parent_node].each(&:reload)
prev_or_null.next = self.next
next_or_null.prev = prev
changed_nodes.each(&:save!)
parent_node.delete_proxy!(self)
end
end
end
def next_or_null
self.next || NullProxy.instance
end
def prev_or_null
self.prev || NullProxy.instance
end
private
def changed_nodes
[self.prev, self.next].uniq.compact.select(&:changed?)
end
end
end
Version data entries
10 entries across 10 versions & 1 rubygems