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Contents
module BlacklightOaiProvider
class ResumptionToken < ::OAI::Provider::ResumptionToken
# parses a token string and returns a ResumptionToken
def self.parse(token_string)
options = {}
total = nil
matches = /(.+):(\d+)$/.match(token_string)
options[:last] = matches.captures[1].to_i
parts = matches.captures[0].split('.')
options[:metadata_prefix] = parts.shift
parts.each do |part|
case part
when /^s/
options[:set] = part.sub(/^s\(/, '').sub(/\)$/, '')
when /^f/
options[:from] = parse_date(part.sub(/^f\(/, '').sub(/\)$/, ''))
when /^u/
options[:until] = parse_date(part.sub(/^u\(/, '').sub(/\)$/, ''))
when /^t/
total = part.sub(/^t\(/, '').sub(/\)$/, '').to_i
end
end
new(options, nil, total)
rescue StandardError
raise OAI::ResumptionTokenException
end
# Force date to be in UTC. If date does not have a timezone UTC is assumed.
# If date is a different timezone it is converted to UTC.
def self.parse_date(str)
ActiveSupport::TimeZone.new('UTC').parse(str)
end
def encode_conditions
encoded_token = @prefix.to_s.dup
encoded_token << ".s(#{set})" if set
encoded_token << ".f(#{from.utc.xmlschema})" if from
encoded_token << ".u(#{self.until.utc.xmlschema})" if self.until
encoded_token << ".t(#{total})" if total
encoded_token << ":#{last}"
end
def to_xml
xml = Builder::XmlMarkup.new
token = total && (last > total) ? '' : encode_conditions
xml.resumptionToken(token, hash_of_attributes)
xml.target!
end
end
end
Version data entries
10 entries across 10 versions & 1 rubygems