Module: ADIWG::Mdtranslator::Readers::Fgdc::PointVector

Defined in:
lib/adiwg/mdtranslator/readers/fgdc/modules/module_pointVector.rb

Class Method Summary collapse

Class Method Details

.unpack(xPtVec, hResourceInfo, hResponseObj) ⇒ Object 



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# File 'lib/adiwg/mdtranslator/readers/fgdc/modules/module_pointVector.rb', line 17

def self.unpack(xPtVec, hResourceInfo, hResponseObj)

   # instance classes needed in script
   intMetadataClass = InternalMetadata.new

   # point and vector object 3.3.1 (sdtsterm) - SDTS term []
   axSDTSterm = xPtVec.xpath('./sdtsterm')
   unless axSDTSterm.empty?
      hVectorInfo = intMetadataClass.newVectorInfo

      axSDTSterm.each do |xTerm|
         hVectorObj = intMetadataClass.newVectorObject

         # SDTS term 3.3.1.1 (sdtstype) - point and vector object type (required)
         # -> spatialRepresentation.vectorInfo.vectorObject.objectType
         sdtsType = xTerm.xpath('./sdtstype').text
         unless sdtsType.empty?
            hVectorObj[:objectType] = sdtsType
         end
         if sdtsType.empty?
            hResponseObj[:readerExecutionMessages] << 'WARNING: FGDC reader: spatial data SDTS object type is missing'
         end

         # SDTS term 3.3.1.2 (ptvctcnt) - point and vector object count
         # -> spatialRepresentation.vectorInfo.vectorObject.objectCount
         ptvCount = xTerm.xpath('./ptvctcnt').text
         unless ptvCount.empty?
            hVectorObj[:objectCount] = ptvCount.to_i
         end

         hVectorInfo[:vectorObject] << hVectorObj
      end

      hSpatialRepresentation = intMetadataClass.newSpatialRepresentation
      hSpatialRepresentation[:vectorRepresentation] = hVectorInfo
      hResourceInfo[:spatialRepresentations] << hSpatialRepresentation
   end

   # point and vector object 3.3.2 (vpfterm) - VPF terms description
   xVPFterm = xPtVec.xpath('./vpfterm')
   unless xVPFterm.empty?
      hVectorInfo = intMetadataClass.newVectorInfo

      # VPF term 3.3.2.1 (vpflevel) - VPF topology level (required)
      # -> spatialRepresentation.vectorInfo.topologyLevel
      level = xVPFterm.xpath('vpflevel').text
      unless level.empty?
         hVectorInfo[:topologyLevel] = level.to_i
      end
      if level.empty?
         hResponseObj[:readerExecutionMessages] << 'WARNING: FGDC reader: spatial data VPF topology level is missing'
      end

      # VPF term 3.3.2.2 (vpfinfo) - VPF point and vector object information [] (required)
      axVPFInfo = xVPFterm.xpath('./vpfinfo')
      unless axVPFInfo.empty?
         axVPFInfo.each do |xInfo|
            hVectorObj = intMetadataClass.newVectorObject

            # VPF point and object 3.3.2.2.1 (vpftype) - VPF point and vector object type (required)
            # -> spatialRepresentation.vectorInfo.vectorObject.objectType
            vpfType = xInfo.xpath('./vpftype').text
            unless vpfType.empty?
               hVectorObj[:objectType] = vpfType
            end
            if vpfType.empty?
               hResponseObj[:readerExecutionMessages] << 'WARNING: FGDC reader: spatial data VPF object type is missing'
            end

            # VPF point and object 3.3.2.2.2 (ptvctcnt) - VPF point and vector object count
            # -> spatialRepresentation.vectorInfo.vectorObject.objectCount
            vpfCount = xInfo.xpath('./ptvctcnt').text
            unless vpfCount.empty?
               hVectorObj[:objectCount] = vpfCount.to_i
            end

            hVectorInfo[:vectorObject] << hVectorObj
         end

         hSpatialRepresentation = intMetadataClass.newSpatialRepresentation
         hSpatialRepresentation[:vectorRepresentation] = hVectorInfo
         hResourceInfo[:spatialRepresentations] << hSpatialRepresentation
      end
      if axVPFInfo.empty?
         hResponseObj[:readerExecutionMessages] << 'WARNING: FGDC reader: spatial data VPF object information is missing'
      end

   end

   # error message
   if axSDTSterm.empty? && xVPFterm.empty?
      hResponseObj[:readerExecutionMessages] << 'WARNING: FGDC reader: spatial data point-vector terms are missing'
   end

   return hResourceInfo

end