Module: Dor::Shelvable

Extended by:
ActiveSupport::Concern
Includes:
Itemizable
Included in:
BasicItem
Defined in:
lib/dor/models/shelvable.rb

Constant Summary

Constants included from Itemizable

Itemizable::DIFF_FILENAME, Itemizable::DIFF_QUERY

Instance Method Summary collapse

Methods included from Itemizable

#clear_diff_cache, #get_content_diff

Instance Method Details

#get_shelve_diffObject

retrieve the differences between the current contentMetadata and the previously ingested version (filtering to select only the files that should be shelved to stacks)


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# File 'lib/dor/models/shelvable.rb', line 27

def get_shelve_diff
  inventory_diff_xml = self.get_content_diff(:shelve)
  inventory_diff = Moab::FileInventoryDifference.parse(inventory_diff_xml)
  shelve_diff = inventory_diff.group_difference("content")
  shelve_diff
end

#get_stacks_locationObject

get the stack location based on the contentMetadata stacks attribute or using the default value from the config file if it doesn't exist


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# File 'lib/dor/models/shelvable.rb', line 49

def get_stacks_location
  
   = self.datastreams['contentMetadata']
  unless .nil? or .stacks.length == 0
    stacks_location = .stacks[0]        
    if stacks_location.start_with?"/"  #Absolute stacks path
      return stacks_location
    else        
      raise "stacks attribute for item: "+self.id+ " contentMetadata should start with /. The current value is "+stacks_location
    end
  end      
  return Config.stacks.local_stacks_root #Default stacks
   
end

#shelveObject

Push file changes for shelve-able files into the stacks


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# File 'lib/dor/models/shelvable.rb', line 9

def shelve
  # retrieve the differences between the current contentMetadata and the previously ingested version
  shelve_diff = get_shelve_diff
  stacks_object_pathname = get_stacks_location
  # determine the location of the object's files in the stacks area
  stacks_druid = DruidTools::StacksDruid.new id, stacks_object_pathname
  stacks_object_pathname = Pathname(stacks_druid.path)
  # determine the location of the object's content files in the workspace area
  workspace_druid = DruidTools::Druid.new(id,Config.stacks.local_workspace_root)
  workspace_content_pathname = workspace_content_dir(shelve_diff, workspace_druid)
  # delete, rename, or copy files to the stacks area
  DigitalStacksService.remove_from_stacks(stacks_object_pathname, shelve_diff)
  DigitalStacksService.rename_in_stacks(stacks_object_pathname, shelve_diff)
  DigitalStacksService.shelve_to_stacks(workspace_content_pathname, stacks_object_pathname, shelve_diff)
end

#workspace_content_dir(content_diff, workspace_druid) ⇒ Pathname

Find the location of the object's content files in the workspace area


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# File 'lib/dor/models/shelvable.rb', line 38

def workspace_content_dir (content_diff, workspace_druid)
  deltas = content_diff.file_deltas
  filelist = deltas[:modified] + deltas[:added] + deltas[:copyadded].collect{|old,new| new}
  return nil if filelist.empty?
  content_pathname = Pathname(workspace_druid.find_filelist_parent('content', filelist))
  content_pathname
end