Module: Cul::Hydra::Solrizer::AccessControlMetadataFields

Extended by:
ActiveSupport::Concern
Includes:
AccessLevels
Included in:
Datastreams::AccessControlMetadata
Defined in:
lib/cul_hydra/solrizer/access_control_metadata_fields.rb

Constant Summary collapse

XACML_NS = 
{'xacml'=>'urn:oasis:names:tc:xacml:3.0:core:schema:wd-17'}
FUNCTION_EMBARGO = 
"urn:oasis:names:tc:xacml:1.0:function:date-greater-than-or-equal".freeze
FUNCTION_ONE_STRING_MATCH = 
"urn:oasis:names:tc:xacml:1.0:function:string-at-least-one-member-of".freeze
FUNCTION_ONE_URI_MATCH = 
"urn:oasis:names:tc:xacml:1.0:function:anyURI-at-least-one-member-of".freeze
TYPE_DATE = 
"http://www.w3.org/2001/XMLSchema#date".freeze
TYPE_STRING = 
"http://www.w3.org/2001/XMLSchema#string".freeze
TYPE_URI = 
"http://www.w3.org/2001/XMLSchema#anyURI".freeze
ATTRIBUTE_AFFILIATION = 
"http://www.ja-sig.org/products/cas/affiliation".freeze

Constants included from AccessLevels

AccessLevels::ACCESS_LEVEL_AFFILIATION, AccessLevels::ACCESS_LEVEL_CLASSROOM, AccessLevels::ACCESS_LEVEL_CLOSED, AccessLevels::ACCESS_LEVEL_EMBARGO, AccessLevels::ACCESS_LEVEL_ONSITE, AccessLevels::ACCESS_LEVEL_PUBLIC, AccessLevels::ACCESS_LEVEL_REQUEST

Instance Method Summary collapse

Instance Method Details

#access_levels ⇒ Object 



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# File 'lib/cul_hydra/solrizer/access_control_metadata_fields.rb', line 34

def access_levels
  policy&.xpath('./xacml:Rule/xacml:Description', XACML_NS).map(&:text)
end

#permissions ⇒ Object 



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# File 'lib/cul_hydra/solrizer/access_control_metadata_fields.rb', line 42

def permissions
  policy&.xpath('./xacml:Rule[@Effect=\'Permit\']/xacml:Condition', XACML_NS)
end

#permissions_indicated? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/cul_hydra/solrizer/access_control_metadata_fields.rb', line 38

def permissions_indicated?
  permissions&.length > 0
end

#permit_affiliations ⇒ Object 



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# File 'lib/cul_hydra/solrizer/access_control_metadata_fields.rb', line 46

def permit_affiliations
  permissions&.map do |condition|
    if condition.xpath("../xacml:Description", XACML_NS).text.eql?(ACCESS_LEVEL_AFFILIATION)
      if condition['FunctionId'].eql?(FUNCTION_ONE_STRING_MATCH)
        condition.xpath(".//xacml:AttributeValue[@DataType='#{TYPE_STRING}']", XACML_NS).text
      end
    end
  end.compact
end

#permit_after_date ⇒ Object 



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# File 'lib/cul_hydra/solrizer/access_control_metadata_fields.rb', line 66

def permit_after_date
  permissions&.map do |condition|
    if condition.xpath("../xacml:Description", XACML_NS).text.eql?(ACCESS_LEVEL_EMBARGO)
      if condition['FunctionId'].eql?(FUNCTION_EMBARGO)
        condition.xpath("./xacml:AttributeValue[@DataType='#{TYPE_DATE}']", XACML_NS).text
      end
    end
  end.compact.first
end

#permit_locations ⇒ Object 



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# File 'lib/cul_hydra/solrizer/access_control_metadata_fields.rb', line 56

def permit_locations
  permissions&.map do |condition|
    if condition.xpath("../xacml:Description", XACML_NS).text.eql?(ACCESS_LEVEL_ONSITE)
      if condition['FunctionId'].eql?(FUNCTION_ONE_URI_MATCH)
        condition.xpath(".//xacml:AttributeValue[@DataType='#{TYPE_URI}']", XACML_NS).text
      end
    end
  end.compact
end

#policy ⇒ Object 



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# File 'lib/cul_hydra/solrizer/access_control_metadata_fields.rb', line 30

def policy
  ng_xml.xpath('/xacml:Policy', XACML_NS).first
end

#to_solr(solr_doc = {}) ⇒ Object 



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# File 'lib/cul_hydra/solrizer/access_control_metadata_fields.rb', line 18

def to_solr(solr_doc={})
  solr_doc = (defined? super) ? super : solr_doc

  return solr_doc if policy.nil?  # Return because there is nothing to process
  solr_doc['access_control_levels_ssim'] = access_levels
  solr_doc['access_control_permissions_bsi'] = permissions_indicated?
  solr_doc['access_control_embargo_dtsi'] = permit_after_date
  solr_doc['access_control_affiliations_ssim'] = permit_affiliations
  solr_doc['access_control_locations_ssim'] = permit_locations
  solr_doc
end