Module: Cul::Hydra::Models::Common

Extended by:
ActiveSupport::Concern
Included in:
Concept, DcDocument, GenericAggregator, GenericObject, GenericResource, METSStructuredAggregator, Resource, ResourceAggregator
Defined in:
app/models/concerns/cul/hydra/models/common.rb

Defined Under Namespace

Modules: ClassMethods

Instance Method Summary collapse

Instance Method Details

#cmodel_pid(klass) ⇒ Object 



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# File 'app/models/concerns/cul/hydra/models/common.rb', line 41

def cmodel_pid(klass)
  klass.pid_namespace + ":" + klass.name.split("::")[-1]
end

#datastreams_in_fedora ⇒ Object 



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# File 'app/models/concerns/cul/hydra/models/common.rb', line 45

def datastreams_in_fedora
  mds = {}
  self.datastreams_xml['datastream'].each do |ds|
    dsid = ds["dsid"]
    ds.merge!({:pid => self.pid, :dsID => dsid, :dsLabel => ds["label"]})
    if dsid == "RELS-EXT"
      mds.merge!({dsid => ActiveFedora::RelsExtDatastream.new(ds)})
    else
      if self.class.ds_specs.has_key? dsid
        mds.merge!({dsid => self.class.ds_specs[dsid][0].new(ds)})
      else
        mds.merge!({dsid => ActiveFedora::Datastream.new(ds)})
      end
    end
    mds[dsid].new_object = false
  end
  mds
end

#get_representative_generic_resource ⇒ Object 



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# File 'app/models/concerns/cul/hydra/models/common.rb', line 145

def get_representative_generic_resource

  return self if self.is_a?(GenericResource)
  return nil unless self.is_a?(Cul::Hydra::Models::Aggregator) # Only Aggregators have struct metadata

  # If we're here, then the object was not a Generic resource.
  # Try to get child info from a structMat datastream, and fall back to
  # the first :cul_member_of child if a structMap isn't present

  # Check for the presence of a structMap and get first GenericResource in that structMap
  if self.has_struct_metadata?
    struct = Cul::Hydra::Datastreams::StructMetadata.from_xml(self.datastreams['structMetadata'].content)
    ng_div = struct.first_ordered_content_div #Nokogiri node response
    found_struct_div = (! ng_div.nil?)
  else
    found_struct_div = false
  end
  
  if found_struct_div
    content_ids = ng_div.attr('CONTENTIDS').split(' ') # Get all space-delimited content ids
    child_obj = nil
    content_ids.each do |content_id|
      child_obj ||= GenericAggregator.search_repo.find_by(identifier: content_id) # We don't know what type of aggregator we'll be getting back, but all we need is the pid
    end
    # If we didn't find the child object through an identifier search, we might be working with a PID instead.
    # Do a pid-based search
    if child_obj.nil?
      content_ids.each do |content_id|
        child_obj ||= ActiveFedora::Base.exists?(content_id) ? ActiveFedora::Base.find(content_id) : nil
      end
    end
    
    if child_obj
      # Recursion!  Woo!
      return child_obj.get_representative_generic_resource
    else
      #Rails.logger.error "No object for dc:identifier in #{content_ids.inspect}"
      return nil
    end
  else
    # If there isn't a structMap, just get the first child
    member_pids = Cul::Hydra::RisearchMembers.get_direct_member_pids(self.pid)
    if member_pids.first
      child_obj = ActiveFedora::Base.find(member_pids.first)
      return child_obj.get_representative_generic_resource
    else
      #Rails.logger.error "No child objects or resources for #{self.pid}"
      return nil
    end
  end
end

#has_desc? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/models/concerns/cul/hydra/models/common.rb', line 68

def has_desc?
  has_desc = false
  begin
    has_desc = self.datastreams.include? "descMetadata"
    has_desc = has_desc and self.inner_object.datastreams["descMetadata"].content.length > 0
    has_desc = has_desc and self.datastreams["descMetadata"].term_values(:identifier).length > 0
  rescue
    has_desc = false
  end
  has_desc
end

#initialize(attrs = nil) ⇒ Object 



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# File 'app/models/concerns/cul/hydra/models/common.rb', line 35

def initialize(attrs = nil)
  attrs = {} if attrs.nil?
  attrs[:namespace] = self.class.pid_namespace unless attrs[:namespace]
  super
end

#label=(new_label) ⇒ Object

A Fedora object label can only contain a string value of up to 255 characters. If we try to set a longer value, it causes errors upon object save. Truncate labels to 255 characters. Note: this method maps to a method_missing hanlder that converts input into a String, so we use the super method first, and then post-process the output of that super method call.



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# File 'app/models/concerns/cul/hydra/models/common.rb', line 26

def label=(new_label)
  super(new_label)
  super(self.label[0,255])
end

#rdf_type ⇒ Object 



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# File 'app/models/concerns/cul/hydra/models/common.rb', line 31

def rdf_type
  relationships[:rdf_type]
end

#route_as ⇒ Object 



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# File 'app/models/concerns/cul/hydra/models/common.rb', line 64

def route_as
  "default"
end

#set_size_labels(solr_doc = {}) ⇒ Object

set the index type label and any RI-based fields



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# File 'app/models/concerns/cul/hydra/models/common.rb', line 81

def set_size_labels(solr_doc={})
  solr_doc["index_type_label_ssi"] = [self.index_type_label]
end

#thumbnail_info ⇒ Object 



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# File 'app/models/concerns/cul/hydra/models/common.rb', line 221

def thumbnail_info
  {:asset=>("cul_hydra/crystal/kmultiple.png"),:mime_type=>"image/png"}
end

#to_solr(solr_doc = Hash.new, opts = {}) ⇒ Object 



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# File 'app/models/concerns/cul/hydra/models/common.rb', line 85

def to_solr(solr_doc = Hash.new, opts={})
  solr_doc = super(solr_doc, opts)

  if has_desc?
    solr_doc["descriptor_ssi"] = ["mods"]
  else
    solr_doc["descriptor_ssi"] = ["dublin core"]
  end
  # if no mods, pull some values from DC
  if (solr_doc["title_display_ssm"].nil? or solr_doc["title_display_ssm"].length == 0)
    if self.datastreams["DC"].term_values(:dc_title).first
      solr_doc["title_display_ssm"] = self.datastreams["DC"].term_values(:dc_title)
    else
      solr_doc["title_display_ssm"] = self.datastreams["DC"].term_values(:dc_identifier).reject {|dcid| dcid.eql? self.id}
    end
    solr_doc["title_si"] = self.datastreams["DC"].term_values(:dc_title).first
    if self.datastreams["DC"].term_values(:dc_relation).first
      self.datastreams["DC"].term_values(:dc_relation).each {|val|
        if val =~ /clio:/
          solr_doc["clio_ssim"] ||= []
          solr_doc["clio_ssim"] << val.split(':')[-1]
        end
      }
    end
  end
  if (solr_doc["identifier_ssim"].nil? or solr_doc["identifier_ssim"].length == 0)
      solr_doc["identifier_ssim"] = self.datastreams["DC"].term_values(:dc_identifier).reject {|dcid| dcid.eql? self.id}
  end
  if (solr_doc["title_display_ssm"].length > 1)
    solr_doc["title_display_ssm"].uniq!
  end

  if solr_doc["contributor_ssim"].present?
    if solr_doc["contributor_ssim"].is_a?(Array)
      solr_doc["contributor_first_si"] = solr_doc["contributor_ssim"].first
    else
      solr_doc["contributor_first_si"] = solr_doc["contributor_ssim"]
    end
  end


  solr_doc["format_ssi"] = [self.route_as]

  set_size_labels(solr_doc)

  solr_doc.each_pair {|key, value|
    if value.is_a? Array
      value.each {|v| v.strip! unless v.nil? }
    elsif value.is_a? String
      value.strip!
    end
  }
  solr_doc[:structured_bsi] = 'false' unless solr_doc.has_key? :structured_bsi
  
  representative_child = get_representative_generic_resource
  solr_doc['representative_generic_resource_pid_ssi'] = representative_child.pid unless representative_child.nil?

  solr_doc
end

#update_datastream_attributes(params = {}, opts = {}) ⇒ Object 



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# File 'app/models/concerns/cul/hydra/models/common.rb', line 197

def update_datastream_attributes(params={}, opts={})
  logger.debug "Common.update_datastream_attributes"
  result = params.dup
  params.each_pair do |dsid, ds_params|
    if datastreams.include?(dsid)
      verify_params = ds_params.dup
      changed = false
      verify_params.each { |pointer, values|
        changed ||= value_changed?(datastreams[dsid],pointer,values)
      }
      if changed
        logger.debug "Common.update_datastream_attributes calling update_indexed_attributes"
        result[dsid] = datastreams[dsid].update_indexed_attributes(ds_params)
      else
        result[dsid] = no_update(ds_params)
      end
      logger.debug "change detected? #{changed} digital_object? #{datastreams[dsid].changed?}"
    else
      result.delete(dsid)
    end
  end
  return result
end