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Versions: 18
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Contents
# frozen_string_literal: true
module Valkyrie::Persistence::Solr::Queries
# Responsible for returning a single resource identified by an ID.
class FindByAlternateIdentifierQuery
attr_reader :connection, :resource_factory
attr_writer :alternate_identifier
# @param [Valkyrie::ID] alternate_identifier
# @param [RSolr::Client] connection
# @param [ResourceFactory] resource_factory
def initialize(alternate_identifier, connection:, resource_factory:)
@alternate_identifier = alternate_identifier
@connection = connection
@resource_factory = resource_factory
end
# Constructs a Valkyrie Resource found using the alternate ID
# @raise [Valkyrie::Persistence::ObjectNotFoundError]
# @return [Valkyrie::Resource]
def run
raise ::Valkyrie::Persistence::ObjectNotFoundError unless resource
resource_factory.to_resource(object: resource)
end
# Retrieve the string value for the alternate ID
# @return [String]
def alternate_identifier
@alternate_identifier.to_s
end
# Query Solr for for the first document with the alternate ID in a field
# @note the field used here is alternate_ids_ssim and the value is prefixed by "id-"
# @return [Hash]
def resource
@resource ||= connection.get("select", params: { q: "alternate_ids_ssim:\"id-#{alternate_identifier}\"", fl: "*", rows: 1 })["response"]["docs"].first
end
end
end
Version data entries
18 entries across 18 versions & 1 rubygems