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Contents
module CurationConcerns
module CollectionBehavior
extend ActiveSupport::Concern
include Hydra::AccessControls::WithAccessRight
include CurationConcerns::Collection
include CurationConcerns::Noid
include CurationConcerns::HumanReadableType
include CurationConcerns::HasRepresentative
include CurationConcerns::Permissions
included do
validates_with HasOneTitleValidator
end
def to_s
title.present? ? title : 'No Title'
end
module ClassMethods
def indexer
CurationConcerns::CollectionIndexer
end
end
# Compute the sum of each file in the collection using Solr to
# avoid having to access Fedora
#
# @return [Fixnum] size of collection in bytes
# @raise [RuntimeError] unsaved record does not exist in solr
def bytes
return 0 if member_ids.count == 0
raise "Collection must be saved to query for bytes" if new_record?
# One query per member_id because Solr is not a relational database
sizes = member_ids.collect do |work_id|
query = ActiveFedora::SolrQueryBuilder.construct_query_for_rel(has_model: ::FileSet.to_class_uri)
argz = { fl: "id, #{file_size_field}",
fq: "{!join from=#{member_ids_field} to=id}id:#{work_id}"
}
files = ActiveFedora::SolrService.query(query, argz)
files.reduce(0) { |sum, f| sum + f[file_size_field].to_i }
end
sizes.reduce(0, :+)
end
private
# Field name to look up when locating the size of each file in Solr.
# Override for your own installation if using something different
def file_size_field
Solrizer.solr_name(:file_size, CurationConcerns::FileSetIndexer::STORED_INTEGER)
end
# Solr field name collections and works use to index member ids
def member_ids_field
Solrizer.solr_name('member_ids', :symbol)
end
end
end
Version data entries
37 entries across 37 versions & 1 rubygems