Class: GenericResource

Inherits:
ActiveFedora::Base
  • Object
show all
Extended by:
ActiveModel::Callbacks
Includes:
ActiveFedora::DatastreamCollections, ActiveFedora::Finders, ActiveFedora::RelsInt, Cul::Scv::Fedora::UrlHelperBehavior, Cul::Scv::Hydra::Models::Common, Cul::Scv::Hydra::Models::ImageResource, Hydra::ModelMethods
Defined in:
app/models/generic_resource.rb

Constant Summary collapse

IMAGE_EXT = 
{"image/bmp" => 'bmp', "image/gif" => 'gif', "image/jpeg" => 'jpg', "image/png" => 'png', "image/tiff" => 'tif', "image/x-windows-bmp" => 'bmp'}
WIDTH = 
RDF::URI(ActiveFedora::Predicates.find_graph_predicate(:image_width))
LENGTH = 
RDF::URI(ActiveFedora::Predicates.find_graph_predicate(:image_length))

Constants included from Cul::Scv::Hydra::Models::ImageResource

Cul::Scv::Hydra::Models::ImageResource::DJATOKA_BASE_URL, Cul::Scv::Hydra::Models::ImageResource::DJATOKA_THUMBNAIL_PARMS, Cul::Scv::Hydra::Models::ImageResource::EXTENT_PREDICATE, Cul::Scv::Hydra::Models::ImageResource::FORMAT_OF_PREDICATE, Cul::Scv::Hydra::Models::ImageResource::FORMAT_URI, Cul::Scv::Hydra::Models::ImageResource::LENGTH_PREDICATE, Cul::Scv::Hydra::Models::ImageResource::WIDTH_PREDICATE

Instance Method Summary collapse

Methods included from Cul::Scv::Fedora::UrlHelperBehavior

#fedora_ds_url, #fedora_method_url, #fedora_object_url, #fedora_risearch_url, #fedora_url, #pid_for_url

Methods included from Cul::Scv::Hydra::Models::ImageResource

#length, #long, #width

Methods included from Cul::Scv::Hydra::Models::Common

#cmodel_pid, #create, #datastreams_in_fedora, #has_desc?, #initialize, #rdf_type, #update_datastream_attributes

Instance Method Details

#assert_content_model ⇒ Object 



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# File 'app/models/generic_resource.rb', line 25

def assert_content_model
  super
  add_relationship(:rdf_type, Cul::Scv::Hydra::ActiveFedora::RESOURCE_TYPE.to_s)
end

#index_type_label ⇒ Object 



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# File 'app/models/generic_resource.rb', line 34

def index_type_label
  "FILE RESOURCE"
end

#linkable_resources ⇒ Object 



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# File 'app/models/generic_resource.rb', line 86

def linkable_resources
  # let's start with the known DSIDs from lindquist, then work our way back to parsing the solrized relsint
  results = []
  if (rels = rels_int.instance_variable_get :@solr_hash)
    # this was loaded from solr
    rels.each do |dsuri, props|
      if dsuri =~ /\/content$/ or not props[FORMAT_OF_PREDICATE].blank?
        dsid =  dsuri.split('/')[-1]
        res = datastream_as_resource(dsid, props)
        results << res
      end
    end
  else
    content_uri = RDF::URI("info:fedora/#{self.pid}/content")
    dsuris = [content_uri]
    results = []
    # read the graph
    datastreams.each do |k, v|
      rels = rels_int.relationships(v, :format_of, content_uri)
      dsuris << rels[0].subject unless rels.blank?
    end

    dsuris.each do |dsuri|
      dsid = dsuri.to_s.split('/')[-1]
      width_rel = rels_int.relationships(dsuri, :exif_image_width)[0]
      length_rel = rels_int.relationships(dsuri, :exif_image_length)[0]
      extent_rel = rels_int.relationships(dsuri, :extent)[0]
      props = {EXTENT_PREDICATE => [], WIDTH_PREDICATE => [], LENGTH_PREDICATE => []}
      props[EXTENT_PREDICATE] << extent_rel.object.to_s unless extent_rel.blank?
      props[WIDTH_PREDICATE] << width_rel.object.to_s unless width_rel.blank?
      props[LENGTH_PREDICATE] << length_rel.object.to_s unless length_rel.blank?
      results << datastream_as_resource(dsid, props)
    end
  end
  results
end

#route_as ⇒ Object 



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# File 'app/models/generic_resource.rb', line 30

def route_as
  self.zooming? ? "zoomingimage" : "resource"
end

#thumbnail_info ⇒ Object 



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# File 'app/models/generic_resource.rb', line 46

def thumbnail_info
  thumb = relsint.relationships(datastreams['content'],:foaf_thumb).first
  if thumb
    t_dsid = thumb.object.to_s.split('/')[-1]
    return {:url=>"#{ActiveFedora.fedora_config[:url]}/objects/#{pid}/datastreams/#{t_dsid}/content",:mime=>datastreams[t_dsid].mimeType}
  else
    return {:url=>image_url("cul_scv_hydra/crystal/file.png"),:mime=>'image/png'}
  end
end

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



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# File 'app/models/generic_resource.rb', line 38

def to_solr(solr_doc = Hash.new, opts={})
  super
  unless solr_doc["extent_ssi"] || self.datastreams["content"].nil?
    solr_doc["extent_ssi"] = [self.datastreams["content"].size]
  end
  solr_doc
end

#zooming? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/models/generic_resource.rb', line 123

def zooming?
  !rels_int.relationships(datastreams['content'], :foaf_zooming).first.blank?
end