Module: ADIWG::Mdtranslator::Readers::MdJson::FeatureCollection

Defined in:
lib/adiwg/mdtranslator/readers/mdJson/modules/module_featureCollection.rb

Class Method Summary collapse

Class Method Details

.unpack(hFeatCol, responseObj) ⇒ Object 



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# File 'lib/adiwg/mdtranslator/readers/mdJson/modules/module_featureCollection.rb', line 19

def self.unpack(hFeatCol, responseObj)

   @MessagePath = ADIWG::Mdtranslator::Readers::MdJson::MdJson

   # return nil object if input is empty
   if hFeatCol.empty?
      @MessagePath.issueWarning(280, responseObj)
      return nil
   end

   # instance classes needed in script
   intMetadataClass = InternalMetadata.new
   intFeatCol = intMetadataClass.newFeatureCollection

   # feature collection - type (required)
   if hFeatCol.has_key?('type')
      unless hFeatCol['type'] == ''
         if hFeatCol['type'] == 'FeatureCollection'
            intFeatCol[:type] = hFeatCol['type']
         else
            @MessagePath.issueError(281, responseObj)
         end
      end
   end
   if intFeatCol[:type].nil? || intFeatCol[:type] == ''
      @MessagePath.issueError(282, responseObj)
   end

   # feature collection - bounding box
   if hFeatCol.has_key?('bbox')
      unless hFeatCol['bbox'].empty?
         intFeatCol[:bbox] = hFeatCol['bbox']
      end
   end

   # feature collection - features (required, but can be empty)
   if hFeatCol.has_key?('features')
      hFeatCol['features'].each do |hFeature|
         hReturn = GeoJson.unpack(hFeature, responseObj)
         unless hReturn.nil?
            intFeatCol[:features] << hReturn
         end
      end
   else
      @MessagePath.issueError(283, responseObj)
   end

   # geometry feature - computed bounding box for extent
   unless intFeatCol[:features].empty?
      intFeatCol[:computedBbox] = AdiwgCoordinates.computeBbox(intFeatCol[:features])
   end

   # geometry feature - save native GeoJSON for feature
   intFeatCol[:nativeGeoJson] = hFeatCol

   return intFeatCol

end