Class: Mexico::FileSystem::FiestaDocument

Inherits:
Object
  • Object
show all
Extended by:
Util::FancyContainer
Includes:
Poseidon, ROXML
Defined in:
lib/mexico/file_system/fiesta_document.rb

Overview

FiESTA Document

Constant Summary collapse

@@CACHE = 
{}

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Util::FancyContainer

add_fancy_container

Constructor Details

#initialize ⇒ FiestaDocument

TODO:

Check if all standard or default values are set correctly.

Creates a new, empty instance of a FiESTA document.



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# File 'lib/mexico/file_system/fiesta_document.rb', line 133

def initialize
  super
  @head = Mexico::FileSystem::Head.new
  @scales_container = []
  @layers_container = []
  @layer_connectors = []
  @items_container  = []
  link_document
end

Instance Attribute Details

#resource ⇒ Object

Returns the value of attribute resource.



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# File 'lib/mexico/file_system/fiesta_document.rb', line 58

def resource
  @resource
end

Class Method Details

.check_watch(needed_id, needed_object) ⇒ void

This method returns an undefined value.

Checks whether the given id/object pair is watched, and takes appropriate action if this is the case.

Parameters:

  • needed_id (String) —

    The XML ID that might be watched.

  • needed_object (Object) —

    The ruby object that might be watched.



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# File 'lib/mexico/file_system/fiesta_document.rb', line 113

def self.check_watch(needed_id, needed_object)
  if defined?(@@WATCHLIST)
    if @@WATCHLIST.has_key?("#{Thread.current.__id__}.#{needed_id}")
      @@WATCHLIST["#{Thread.current.__id__}.#{needed_id}"].each do |entry|
        entry[0].send(entry[1], needed_object)
      end
      @@WATCHLIST.delete("#{Thread.current.__id__}.#{needed_id}")
    end
  end
end

.knows?(xml_id) ⇒ Boolean

Retrieves a stored object from the temporary import cache.

Parameters:

  • xml_id (String) —

    The xml id of the needed object.

Returns:

  • (Boolean) —

    true if there is an entry for the given id, false otherwise.



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# File 'lib/mexico/file_system/fiesta_document.rb', line 87

def self.knows?(xml_id)
  @@CACHE.has_key?("#{Thread.current.__id__}.#{xml_id}")
end

.open(filename) ⇒ Mexico::FileSystem::FiestaDocument

Opens the document at the given location.

Parameters:

  • filename (String) —

    The path that points to the file to be opened.

Returns:



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# File 'lib/mexico/file_system/fiesta_document.rb', line 127

def self.open(filename)
  self.from_xml(File.open(filename))
end

.resolve(xml_id) ⇒ Object

Retrieves a stored object from the temporary import cache.

Parameters:

  • xml_id (String) —

    The xml id of the needed object.

Returns:

  • (Object) —

    The needed object, or nil if nothing could be found.



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# File 'lib/mexico/file_system/fiesta_document.rb', line 80

def self.resolve(xml_id)
  @@CACHE["#{Thread.current.__id__}.#{xml_id}"]
end

.store(xml_id, ruby_object) ⇒ void

This method returns an undefined value.

Retrieves a stored object from the temporary import cache.

Parameters:

  • xml_id (String) —

    The xml id of the needed object.

  • ruby_object (String) —

    The ruby object to be stored.



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# File 'lib/mexico/file_system/fiesta_document.rb', line 95

def self.store(xml_id, ruby_object)
  @@CACHE = {} unless defined?(@@CACHE)
  @@CACHE["#{Thread.current.__id__}.#{xml_id}"] = ruby_object
  ::Mexico::FileSystem::FiestaDocument.check_watch(xml_id, ruby_object)
end

.watch(needed_id, object, method) ⇒ Object

Put an xml id into the watch list, along with an object and a method



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# File 'lib/mexico/file_system/fiesta_document.rb', line 102

def self.watch(needed_id, object, method)
  @@WATCHLIST = {} unless defined?(@@WATCHLIST)
  @@WATCHLIST["#{Thread.current.__id__}.#{needed_id}"] = [] unless @@WATCHLIST.has_key?("#{Thread.current.__id__}.#{needed_id}")
  @@WATCHLIST["#{Thread.current.__id__}.#{needed_id}"] << [object, method]
end

Instance Method Details

#add_item(item = nil) ⇒ Object 



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# File 'lib/mexico/file_system/fiesta_document.rb', line 214

def add_item(item=nil)
  if item.nil?
    new_item = Mexico::FileSystem::Item.new(identifier: "item#{rand(2**16)}")
    # @TODO check if that random ID is still available!
  end
  if item.is_a?(Hash)
    new_item = Mexico::FileSystem::Item.new(item.merge({document: self}))
  end
  if item.is_a?(Mexico::FileSystem::Item)
    new_item = item
  end
  # @TODO catch error if parameter has wrong object type
  if block_given?
    yield new_item
  end
  # check if item is not in the array already
  @items_container << new_item
  new_item
end

#add_layer(args) ⇒ Object 



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# File 'lib/mexico/file_system/fiesta_document.rb', line 152

def add_layer(args)
  if args.is_a?(Hash)
    new_layer = Mexico::FileSystem::Layer.new(args.merge({document: self}))
    @layers_container << new_layer
    return new_layer
  end
  if args.is_a?(Mexico::FileSystem::Layer)
    @layers_container << args
    return args
  end
  # @TODO catch error if parameter has wrong object type
  return nil
end

#add_layer_connector(layer_connector) ⇒ Object 



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# File 'lib/mexico/file_system/fiesta_document.rb', line 234

def add_layer_connector(layer_connector)
  @layer_connectors << layer_connector
end

#add_scale(args) ⇒ Object 



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# File 'lib/mexico/file_system/fiesta_document.rb', line 166

def add_scale(args)
  if args.is_a?(Hash)
    new_layer = Mexico::FileSystem::Scale.new(args.merge({document: self}))
    @scales_container << new_layer
    return new_layer
  end
  if args.is_a?(Mexico::FileSystem::Scale)
    @scales_container << args
    return args
  end
  # @TODO catch error if parameter has wrong object type
  return nil
end

#add_standard_timeline(unit = "ms") ⇒ Scale

Adds a standard timeline scale to the document.

Parameters:

  • unit (String) (defaults to: "ms") —

    The unit to be used for this timeline.

Returns:

  • (Scale) —

    The created timeline scale object.



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# File 'lib/mexico/file_system/fiesta_document.rb', line 146

def add_standard_timeline(unit="ms")
  @scales_container << Mexico::FileSystem::Scale.new(identifier: 'timeline01', name: 'Timeline', unit: unit, dimension: Mexico::FileSystem::Scale::DIM_TIME)
  @scales_container.last.document = self
  @scales_container.last
end

#after_parse ⇒ Object

This method attempts to link objects from other locations of the XML/object tree into position inside this object, by following the xml ids given in the appropriate fields of this class.



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# File 'lib/mexico/file_system/fiesta_document.rb', line 183

def after_parse
  link_document
  # then clear cache
  @@CACHE.clear
end

#get_layer_by_id(id) ⇒ Object 



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# File 'lib/mexico/file_system/fiesta_document.rb', line 238

def get_layer_by_id(id)
  matches = layers.select{|l| l.identifier == id}
  return matches[0] if matches.size>0
  return nil
end

#identifier=(new_id) ⇒ Object 



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# File 'lib/mexico/file_system/fiesta_document.rb', line 358

def identifier=(new_id)
  @identifier = Mexico::Util::to_xml_id(new_id)
end

#inter_layer_graph(layer1, layer2) ⇒ Object 



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# File 'lib/mexico/file_system/fiesta_document.rb', line 282

def inter_layer_graph(layer1, layer2)
  # 0: source items, 1: target items, 2: links
  result_graph = {
      sources:    Set.new,
      sinks:      Set.new,
      links:      Set.new,
      source_map: Hash.new,
      sink_map:   Hash.new
  }

  result_graph[:sources].merge layer1.items
  result_graph[:sinks].merge layer2.items

  links = result_graph[:sources].collect{|i| i.item_links }.flatten
  links = links.select{|l| l.target_object.layers.include?(layer2) }
  result_graph[:links] = links

  # fill the source and target maps with data
  result_graph[:sources].each do |node|
    result_graph[:source_map][node] = Set.new
  end
  result_graph[:sinks].each do |node|
    result_graph[:sink_map][node] = Set.new
  end

  result_graph[:links].each do |link|
    source = link.item
    sink = link.target_item
    result_graph[:source_map][source] << sink
    result_graph[:sink_map][sink] << source
  end

  result_graph
end

#inter_layer_graph_list ⇒ Object 



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# File 'lib/mexico/file_system/fiesta_document.rb', line 317

def inter_layer_graph_list
  # collect all parent child pairs of layers
  # calculate layer graphs for all of them
  ilg_list = Hash.new
  layers.each do |parent_layer|
    parent_layer.successor_layers.each do |child_layer|
      ilg_list[ [parent_layer, child_layer[0]] ] = inter_layer_graph(parent_layer, child_layer[0])
    end
  end
  ilg_list
end

#inter_layer_sink_cardinality ⇒ Object

Cardinality of source elements: how many links are connected to the source nodes?



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# File 'lib/mexico/file_system/fiesta_document.rb', line 349

def inter_layer_sink_cardinality
  card = 0
  inter_layer_graph_list.each do |k,v|
    graph_card = v[:source_map].values.collect{|m| m.size}.max
    card = [card,graph_card].max
  end
  card
end

#inter_layer_source_cardinality ⇒ Object

Cardinality of source elements: how many links are connected to the source nodes?



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# File 'lib/mexico/file_system/fiesta_document.rb', line 339

def inter_layer_source_cardinality
  card = 0
  inter_layer_graph_list.each do |k,v|
    graph_card = v[:sink_map].values.collect{|m| m.size}.max
    card = [card,graph_card].max
  end
  card
end

#layers_form_a_cdag? ⇒ Boolean

Returns:

  • (Boolean)

Raises:

  • (Mexico::NotYetImplementedError) 


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# File 'lib/mexico/file_system/fiesta_document.rb', line 252

def layers_form_a_cdag?
  raise Mexico::NotYetImplementedError.new('This method has not been implemented yet.')
end

#layers_form_a_dag? ⇒ Boolean

Returns:

  • (Boolean)

Raises:

  • (Mexico::NotYetImplementedError) 


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# File 'lib/mexico/file_system/fiesta_document.rb', line 248

def layers_form_a_dag?
  raise Mexico::NotYetImplementedError.new('This method has not been implemented yet.')
end

#layers_form_a_forest? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mexico/file_system/fiesta_document.rb', line 256

def layers_form_a_forest?
  # check whether all layers have at most one parent layer
  self.layers.each do |layer|
    return false if layer.predecessor_layers.size > 1
  end
  return true
end

#layers_form_a_graph? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mexico/file_system/fiesta_document.rb', line 244

def layers_form_a_graph?
  true
end

#layers_form_a_tree? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mexico/file_system/fiesta_document.rb', line 264

def layers_form_a_tree?
  # check whether all layers but one have exactly one parent layer
  other_than_ones = []
  self.layers.each do |layer|
    s = layer.predecessor_layers.size
    other_than_ones << s if s != 1
  end
  true if s.size == 1 && s.first==0
end

#layers_form_an_edgeless_graph? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mexico/file_system/fiesta_document.rb', line 274

def layers_form_an_edgeless_graph?
  @layer_connectors.empty?
end

#layers_form_an_empty_graph? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mexico/file_system/fiesta_document.rb', line 278

def layers_form_an_empty_graph?
 layers.empty?
end

#link_document ⇒ Object 



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# File 'lib/mexico/file_system/fiesta_document.rb', line 189

def link_document
  # process xml ids
  scales.each do |x|
    x.document = self
  end
  layers.each do |x|
    x.document = self
  end
  items.each do |x|
    x.document = self
    x.item_links.each do |y|
      y.document = self
    end
    x.layer_links.each do |y|
      y.document = self
    end
    x.point_links.each do |y|
      y.document = self
    end
    x.interval_links.each do |y|
      y.document = self
    end
  end
end

#sink_cardinality_for_layer(layer1, layer2) ⇒ Object 



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# File 'lib/mexico/file_system/fiesta_document.rb', line 333

def sink_cardinality_for_layer(layer1, layer2)
  inter_layer_graph_list[[layer1,layer2]][:source_map].values.collect{|m| m.size}.max
end

#source_cardinality_for_layer(layer1, layer2) ⇒ Object 



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# File 'lib/mexico/file_system/fiesta_document.rb', line 329

def source_cardinality_for_layer(layer1, layer2)
  inter_layer_graph_list[[layer1,layer2]][:sink_map].values.collect{|m| m.size}.max
end