Class: GenericResource
Constant Summary
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- 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))
Cul::Hydra::Models::ImageResource::DEGREES_TO_EXIF_ORIENTATIONS, Cul::Hydra::Models::ImageResource::DJATOKA_BASE_URL, Cul::Hydra::Models::ImageResource::DJATOKA_THUMBNAIL_PARMS, Cul::Hydra::Models::ImageResource::EXIF_ORIENTATION_TO_DEGREES, Cul::Hydra::Models::ImageResource::EXTENT_PREDICATE, Cul::Hydra::Models::ImageResource::FORMAT_OF_PREDICATE, Cul::Hydra::Models::ImageResource::FORMAT_URI, Cul::Hydra::Models::ImageResource::LENGTH_PREDICATE, Cul::Hydra::Models::ImageResource::WIDTH_PREDICATE
Instance Method Summary
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#fedora_ds_url, #fedora_method_url, #fedora_object_url, #fedora_risearch_url, #fedora_url, #pid_for_url
#length, #long, #orientation, #orientation=, #required_rotation_for_upright_display, #width
#cmodel_pid, #datastreams_in_fedora, #get_representative_generic_resource, #get_singular_rel, #has_desc?, #initialize, #label=, #rdf_type, #rdf_types!, #set_singular_rel, #set_size_labels, #update_datastream_attributes
Instance Method Details
#assert_content_model ⇒ Object
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# File 'app/models/generic_resource.rb', line 29
def assert_content_model
super
add_relationship(:rdf_type, RDF::CUL.Resource.to_s)
end
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#index_type_label ⇒ Object
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# File 'app/models/generic_resource.rb', line 38
def index_type_label
"FILE ASSET"
end
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#linkable_resources ⇒ Object
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# File 'app/models/generic_resource.rb', line 99
def linkable_resources
results = []
if (rels = rels_int.instance_variable_get :@solr_hash)
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.with_indifferent_access)
results << res
end
end
else
content_uri = RDF::URI("info:fedora/#{self.pid}/content")
dsuris = [content_uri]
results = []
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, :image_width)[0]
length_rel = rels_int.relationships(dsuri, :image_length)[0]
extent_rel = rels_int.relationships(dsuri, :extent)[0]
props = {extent: [], image_width: [], image_length: []}
props[:extent] << extent_rel.object.to_s unless extent_rel.blank?
props[:image_width] << width_rel.object.to_s unless width_rel.blank?
props[:image_length] << length_rel.object.to_s unless length_rel.blank?
results << datastream_as_resource(dsid, props)
end
end
results
end
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#route_as ⇒ Object
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# File 'app/models/generic_resource.rb', line 34
def route_as
"resource"
end
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#service_datastream ⇒ Object
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# File 'app/models/generic_resource.rb', line 147
def service_datastream
args = [:s, rels_int.to_predicate(:format_of), RDF::URI.new("#{internal_uri}/content")]
query = RDF::Query.new { |q| q << args }
candidates = query.execute(rels_int.graph).map(&:to_hash).map do |hash|
hash[:s]
end
args = [:s, rels_int.to_predicate(:rdf_type), RDF::URI.new("http://pcdm.org/use#ServiceFile")]
query = RDF::Query.new { |q| q << args }
candidates &= query.execute(rels_int.graph).map(&:to_hash).map do |hash|
hash[:s]
end
candidate_dsid = candidates.first && candidates.first.to_s.split('/')[-1]
return datastreams[candidate_dsid] if datastreams.keys.include? candidate_dsid
return nil
end
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#thumbnail_info ⇒ Object
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# File 'app/models/generic_resource.rb', line 83
def thumbnail_info
thumb = rels_int.relationships(datastreams['content'],:foaf_thumbnail).first
if thumb
t_dsid = thumb.object.to_s.split('/')[-1]
t_url = "#{ActiveFedora.fedora_config.credentials[:url]}/objects/#{pid}/datastreams/#{t_dsid}/content"
return {:url=>t_url,:mime=>datastreams[t_dsid].mimeType}
elsif self.zooming?
t_dsid = rels_int.relationships(dsuri, :foaf_zooming).first.object.to_s.split('/')[-1]
t_parms = DJATOKA_THUMBNAIL_PARMS.merge({"rft_id" => datastreams[t_dsid].dsLocation})
url = "#{DJATOKA_BASE_URL}?#{options.map { |key, value| "#{CGI::escape(key.to_s)}=#{CGI::escape(value.to_s)}"}.join("&") }"
{:url => url, :mime => t_parms["svc.format"]}
else
return {:asset => "cul_hydra/crystal/file.png",:mime=>'image/png'}
end
end
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#to_solr(solr_doc = Hash.new, opts = {}) ⇒ Object
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# File 'app/models/generic_resource.rb', line 42
def to_solr(solr_doc = Hash.new, opts={})
solr_doc = super
unless solr_doc["extent_ssim"] || self.datastreams["content"].nil?
if self.datastreams["content"].dsSize.to_i > 0
solr_doc["extent_ssim"] = [self.datastreams["content"].dsSize]
else
repo = ActiveFedora::Base.connection_for_pid(pid)
ds_parms = {pid: pid, dsid: "content", method: :head}
repo.datastream_dissemination(ds_parms) do |res|
solr_doc["extent_ssim"] = res['Content-Length']
end
end
end
if self.zooming?
fz = rels_int.relationships(datastreams['content'], :foaf_zooming).first.object.to_s.split('/')[-1]
ds = datastreams[fz]
unless ds.nil?
rft_id = ds.controlGroup == 'E' ? datastreams[fz].dsLocation : legacy_content_path(ds,'info:fedora/datastreams/')
solr_doc['rft_id_ss'] = rft_id
end
end
if (service_ds = self.service_datastream)
solr_doc['service_dslocation_ss'] = service_ds.dsLocation
end
solr_doc["fulltext_tesim"] = []
unless self.datastreams["fulltext"].nil?
solr_doc["fulltext_tesim"].concat(solr_doc["title_display_ssm"]) unless solr_doc["title_display_ssm"].nil? or solr_doc["title_display_ssm"].length == 0
solr_doc["fulltext_tesim"] << self.datastreams["fulltext"].content
end
relationships(:original_name).each do |original_name|
solr_doc["original_name_tesim"] ||= []
original_name = original_name.object.to_s.split('/').join(' ')
solr_doc["original_name_tesim"] << original_name.strip
end
solr_doc
end
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#with_ds_resource(ds_id, fedora_content_filesystem_mounted = false, &block) ⇒ Object
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# File 'app/models/generic_resource.rb', line 164
def with_ds_resource(ds_id, fedora_content_filesystem_mounted=false, &block)
ds = self.datastreams[ds_id]
if ! ds.dsLocation.start_with?(self.pid) && fedora_content_filesystem_mounted
if ds.dsLocation =~ /^file:\//
dsLocation = ds.dsLocation.sub(/^file:\/+/,'/')
path = URI.unescape(dsLocation)
else
path = ds.dsLocation
end
yield(path)
else
internal_uri = "info:fedora/#{self.pid}/#{ds_id}"
file_basename = File.basename(ds.dsLocation.gsub(/^file:/,''))
file_extension = File.extname(file_basename)
temp_file = Tempfile.new([file_basename, file_extension])
begin
parts = internal_uri.split('/')
open(temp_file.path, 'wb') do |blob|
repo = ActiveFedora::Base.connection_for_pid(parts[1])
repo.datastream_dissemination({:dsid=>parts[2], :pid=>parts[1], :finished=>false}) do |res|
res.read_body do |seg|
blob << seg
end
end
end
yield(temp_file.path)
ensure
temp_file.unlink
end
end
end
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#zooming? ⇒ Boolean
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# File 'app/models/generic_resource.rb', line 136
def zooming?
content = datastreams['content']
return false unless content
zr = rels_int.relationships(content, :foaf_zooming)
if (zr && zr.first)
return !zr.first.blank?
else
false
end
end
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