Class: PublishMyData::DataCube::Dimension

Inherits:
Object
  • Object
show all
Includes:
CubeResults
Defined in:
app/models/publish_my_data/data_cube/dimension.rb

Constant Summary collapse

PAGE_SIZE = 
5000

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from CubeResults

#loop_and_page_sparql_query, #uris_and_labels_only

Constructor Details

#initialize(uri, cube, label = nil) ⇒ Dimension

Returns a new instance of Dimension.



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# File 'app/models/publish_my_data/data_cube/dimension.rb', line 12

def initialize(uri, cube, label = nil)
  @uri = uri
  @cube = cube
  @label = label
end

Instance Attribute Details

#cube ⇒ Object (readonly)

Returns the value of attribute cube.



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# File 'app/models/publish_my_data/data_cube/dimension.rb', line 7

def cube
  @cube
end

#label ⇒ Object (readonly)

Returns the value of attribute label.



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# File 'app/models/publish_my_data/data_cube/dimension.rb', line 8

def label
  @label
end

#uri ⇒ Object (readonly)

Returns the value of attribute uri.



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# File 'app/models/publish_my_data/data_cube/dimension.rb', line 6

def uri
  @uri
end

Instance Method Details

#size ⇒ Object 



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# File 'app/models/publish_my_data/data_cube/dimension.rb', line 26

def size
  # don't get labels and don't paginate.
  sparql = values_sparql({labels:false})
  sq = Tripod::SparqlQuery.new(sparql)
  count_sparql = sq.as_count_query_str
  result = Tripod::SparqlClient::Query.select(count_sparql)
  result[0]["tripod_count_var"]["value"].to_i
end

#values ⇒ Object

get all the possible values (uris and labels) for this dimension in the dataset passed in. paginates internally if necessary.



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# File 'app/models/publish_my_data/data_cube/dimension.rb', line 20

def values
  sparql = values_sparql(labels:true)
  results = loop_and_page_sparql_query(sparql) # by default this tries 5000 rows at a time.
  uris_and_labels_only(results)
end