Class: ActiveWarehouse::Aggregate::DwarfAggregate::Node

Inherits:
Object
  • Object
show all
Defined in:
lib/active_warehouse/aggregate/dwarf_aggregate.rb

Constant Summary collapse

@@sequence = 
0

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(key = nil, parent_cell = nil) ⇒ Node

Initialize the node with a cell that has the given key



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# File 'lib/active_warehouse/aggregate/dwarf_aggregate.rb', line 304

def initialize(key=nil, parent_cell=nil)
  @closed = false
  @processed = false
  @parent = parent_cell
  @parent.child = self if @parent
  @index = @@sequence += 1
  #puts "creating node #{@index} with parent: #{@parent}"
  add_cell(Cell.new(key)) if key
end

Instance Attribute Details

#all_cell ⇒ Object

A special cell which will hold either a reference to a sub node or the aggregate values for all of the values in the node’s cells



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# File 'lib/active_warehouse/aggregate/dwarf_aggregate.rb', line 284

def all_cell
  @all_cell
end

#closed ⇒ Object

Set the true if the node is closed



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# File 'lib/active_warehouse/aggregate/dwarf_aggregate.rb', line 290

def closed
  @closed
end

#index ⇒ Object (readonly)

Reader accessor for the node index, a sequential number identifying order of creation



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# File 'lib/active_warehouse/aggregate/dwarf_aggregate.rb', line 299

def index
  @index
end

#leaf ⇒ Object

Set to true if this node is a leaf node



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# File 'lib/active_warehouse/aggregate/dwarf_aggregate.rb', line 296

def leaf
  @leaf
end

#parent ⇒ Object

The parent cell or nil



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# File 'lib/active_warehouse/aggregate/dwarf_aggregate.rb', line 287

def parent
  @parent
end

#processed ⇒ Object

Set to true if the node has been processed



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# File 'lib/active_warehouse/aggregate/dwarf_aggregate.rb', line 293

def processed
  @processed
end

Instance Method Details

#add_cell(cell) ⇒ Object 



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# File 'lib/active_warehouse/aggregate/dwarf_aggregate.rb', line 353

def add_cell(cell)
  cell.node = self
  cells << cell
end

#cells ⇒ Object

Return an array of cells for the node



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# File 'lib/active_warehouse/aggregate/dwarf_aggregate.rb', line 315

def cells
  @cells ||= []
end

#child(key) ⇒ Object 



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# File 'lib/active_warehouse/aggregate/dwarf_aggregate.rb', line 330

def child(key)
  cells.each do |cell|
    return cell.child if cell.key == key
  end
  return nil
end

#children ⇒ Object 



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# File 'lib/active_warehouse/aggregate/dwarf_aggregate.rb', line 337

def children
  cells.collect { |cell| cell.child }.compact
end

#closed? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/active_warehouse/aggregate/dwarf_aggregate.rb', line 341

def closed?
  closed
end

#has_cell_with_key?(key) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/active_warehouse/aggregate/dwarf_aggregate.rb', line 323

def has_cell_with_key?(key)
  cells.each do |cell|
    return true if cell.key == key
  end
  return false
end

#keys ⇒ Object 



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# File 'lib/active_warehouse/aggregate/dwarf_aggregate.rb', line 319

def keys
  cells.collect { |cell| cell.key }
end

#leaf? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/active_warehouse/aggregate/dwarf_aggregate.rb', line 349

def leaf?
  leaf
end

#processed? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/active_warehouse/aggregate/dwarf_aggregate.rb', line 345

def processed?
  processed
end

#to_s ⇒ Object 



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# File 'lib/active_warehouse/aggregate/dwarf_aggregate.rb', line 363

def to_s
  index.to_s
end