Class: TimeFrame::Collection::TreeNode

Inherits:
Object
  • Object
show all
Defined in:
lib/time_frame/tree_node.rb

Overview

This is a helper class for the collection. It contains the node definition for the used tree structues.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(args, &block) ⇒ TreeNode

Returns a new instance of TreeNode.


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# File 'lib/time_frame/tree_node.rb', line 9

def initialize(args, &block)
  @item = args.fetch(:item)
  @time_frame = block.call(item)
  # if ancestor is nil, then tree_item is root node
  @ancestor = args.fetch(:ancestor, nil)
  @left_child = args.fetch(:left_child, nil)
  @right_child = args.fetch(:right_child, nil)

  # if block is given use it to get item's time frame
  @child_time_frame = @time_frame
end

Instance Attribute Details

#ancestor ⇒ Object (readonly)

Returns the value of attribute ancestor.


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# File 'lib/time_frame/tree_node.rb', line 8

def ancestor
  @ancestor
end

#child_time_frame ⇒ Object

Returns the value of attribute child_time_frame.


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# File 'lib/time_frame/tree_node.rb', line 7

def child_time_frame
  @child_time_frame
end

#item ⇒ Object (readonly)

Returns the value of attribute item.


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# File 'lib/time_frame/tree_node.rb', line 8

def item
  @item
end

#left_child ⇒ Object

Returns the value of attribute left_child.


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# File 'lib/time_frame/tree_node.rb', line 7

def left_child
  @left_child
end

#right_child ⇒ Object

Returns the value of attribute right_child.


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# File 'lib/time_frame/tree_node.rb', line 7

def right_child
  @right_child
end

#time_frame ⇒ Object (readonly)

Returns the value of attribute time_frame.


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# File 'lib/time_frame/tree_node.rb', line 8

def time_frame
  @time_frame
end

Instance Method Details

#update_ancestor_relation(new_ancestor, side) ⇒ Object 


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# File 'lib/time_frame/tree_node.rb', line 21

def update_ancestor_relation(new_ancestor, side)
  @ancestor = new_ancestor
  new_ancestor.left_child = self if side == :left
  new_ancestor.right_child = self if side == :right
end

#update_child_frame(new_child_frame) ⇒ Object 


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# File 'lib/time_frame/tree_node.rb', line 27

def update_child_frame(new_child_frame)
  min = [@child_time_frame.min, new_child_frame.min].min
  max = [@child_time_frame.max, new_child_frame.max].max
  @child_time_frame = TimeFrame.new(min: min, max: max)
  ancestor.update_child_frame(@child_time_frame) if ancestor
end