Class: OAI::Provider::Response::ListIdentifiers

Inherits:
RecordResponse show all
Defined in:
lib/oai/provider/response/list_identifiers.rb

Instance Attribute Summary

Attributes inherited from Base

#options, #provider

Instance Method Summary collapse

Methods inherited from RecordResponse

#data_for, #header_for, inherited

Methods inherited from Base

default_parameters, #initialize, required_parameters, #response, valid_parameters

Constructor Details

This class inherits a constructor from OAI::Provider::Response::Base

Instance Method Details

#to_xml ⇒ Object

Raises:



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# File 'lib/oai/provider/response/list_identifiers.rb', line 6

def to_xml
  result = provider.model.find(:all, options)

  # result may be an array of records, or a partial result
  records = result.respond_to?(:records) ? result.records : result
  
  raise OAI::NoMatchException.new if records.nil? or records.empty?
  format = requested_format # not call this in each iteration
  records.reject! do |r| 
    !record_supports(r, format)
  end
  
  response do |r|
    r.ListIdentifiers do
      records.each do |rec|
        header_for rec
      end

      # append resumption token for getting next group of records
      if result.respond_to?(:token)
        r.target! << result.token.to_xml
      end

    end
  end
end