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Contents
module Hydra::PCDM
##
# Implements behavior for PCDM collections.
#
# The behavior is summarized as:
# 1) Hydra::PCDM::Collection can aggregate (pcdm:hasMember) Hydra::PCDM::Collection (no infinite loop, e.g., A -> B -> C -> A)
# 2) Hydra::PCDM::Collection can aggregate (pcdm:hasMember) Hydra::PCDM::Object
# 3) Hydra::PCDM::Collection can aggregate (ore:aggregates) Hydra::PCDM::Object (Object related to the Collection)
# 4) Hydra::PCDM::Collection can NOT aggregate non-PCDM object
# 5) Hydra::PCDM::Collection can NOT contain (pcdm:hasFile) Hydra::PCDM::File
# 6) Hydra::PCDM::Collection can have descriptive metadata
# 7) Hydra::PCDM::Collection can have access metadata
#
module CollectionBehavior
extend ActiveSupport::Concern
included do
type Vocab::PCDMTerms.Collection
include ::Hydra::PCDM::PcdmBehavior
end
##
# @see ActiveSupport::Concern
module ClassMethods
##
# @return [Class] the indexer class
def indexer
Hydra::PCDM::CollectionIndexer
end
##
# @return [Class] the validator class
def type_validator
Validators::PCDMCollectionValidator
end
end
##
# @return [Enumerable<PCDM::CollectionBehavior>]
def collections
members.select(&:pcdm_collection?)
end
##
# @return [Enumerable<String>]
def collection_ids
members.select(&:pcdm_collection?).map(&:id)
end
##
# @return [Enumerable<PCDM::CollectionBehavior>]
def ordered_collections
ordered_members.to_a.select(&:pcdm_collection?)
end
##
# @return [Enumerable<String>]
def ordered_collection_ids
ordered_collections.map(&:id)
end
##
# @return [Boolean] whether this instance is a PCDM Object.
def pcdm_object?
false
end
##
# @return [Boolean] whether this instance is a PCDM Collection.
def pcdm_collection?
true
end
end
end
Version data entries
8 entries across 8 versions & 1 rubygems