title GWToolset Metadata Mapping

opt processRequest()
  alt $user_options['preview']
	opt processMetadata()
	  MetadataMappingHandler->+GWTFileBackend: retrieveFileFromRelativePath()
	  GWTFileBackend-->-MetadataMappingHandler: return {FSFile}
	  MetadataMappingHandler->+XmlMappingHandler: processXml()
		XmlMappingHandler->+XmlHandler: readXmlAsFile()
		  loop read()
			XmlHandler->+XmlMappingHandler: processDOMElements()
			  XmlMappingHandler->+MetadataMappingHandler: processMatchingElement()
				alt $user_options['save-as-batch-job']
				  MetadataMappingHandler->+UploadHandler: saveMediafileViaJob()
				  UploadHandler->-MetadataMappingHandler: return {bool}
				else not $user_options['save-as-batch-job']
				  MetadataMappingHandler->+UploadHandler: saveMediafileAsContent()
				  UploadHandler->-MetadataMappingHandler: return {null|Title}
				end
			  MetadataMappingHandler-->-XmlMappingHandler: return {null|bool|Title}
			XmlMappingHandler->-XmlHandler: return {array}
		  end
		XmlHandler->-XmlMappingHandler: return {array}
	  XmlMappingHandler-->-MetadataMappingHandler: return {array}
	  opt empty( $this->SpecialPage ), createMetadataBatchJob()
		note over MetadataMappingHandler: $job = new UploadMetadataJob()
		MetadataMappingHandler->+JobQueueGroup: singleton()->push( $job )
		JobQueueGroup-->-MetadataMappingHandler: return {bool}
	  end
	end
	MetadataMappingHandler->+PreviewForm: getForm()
	PreviewForm-->-MetadataMappingHandler: return {string}
  else not $user_options['preview']
	alt not empty( $this->SpecialPage )
	  opt createMetadataBatchJob()
		note over MetadataMappingHandler: $job = new UploadMetadataJob()
		MetadataMappingHandler->+JobQueueGroup: singleton()->push( $job )
		JobQueueGroup-->-MetadataMappingHandler: return {bool}
	  end
	else empty( $this->SpecialPage )
	  opt processMetadata()
		MetadataMappingHandler->+GWTFileBackend: retrieveFileFromRelativePath()
		GWTFileBackend-->-MetadataMappingHandler: return {FSFile}
		MetadataMappingHandler->+XmlMappingHandler: processXml()
		  XmlMappingHandler->+XmlHandler: readXmlAsFile()
			loop read()
			  XmlHandler->+XmlMappingHandler: processDOMElements()
				XmlMappingHandler->+MetadataMappingHandler: processMatchingElement()
				  alt $user_options['save-as-batch-job']
					MetadataMappingHandler->+UploadHandler: saveMediafileViaJob()
					UploadHandler->-MetadataMappingHandler: return {bool}
				  else not $user_options['save-as-batch-job']
					MetadataMappingHandler->+UploadHandler: saveMediafileAsContent()
					UploadHandler->-MetadataMappingHandler: return {null|Title}
				  end
				MetadataMappingHandler-->-XmlMappingHandler: return {null|bool|Title}
			  XmlMappingHandler->-XmlHandler: return {array}
			end
		  XmlHandler->-XmlMappingHandler: return {array}
		XmlMappingHandler-->-MetadataMappingHandler: return {array}
		opt empty( $this->SpecialPage ), createMetadataBatchJob()
		  note over MetadataMappingHandler: $job = new UploadMetadataJob()
		  MetadataMappingHandler->+JobQueueGroup: singleton()->push( $job )
		  JobQueueGroup-->-MetadataMappingHandler: return {bool}
		end
	  end
	end
  end
end