Class: Hashematics::Group

Inherits:
Object
  • Object
show all
Defined in:
lib/hashematics/group.rb

Overview

A group is a node in a tree structure connected to other groups through the children attribute. A group essentially represents an object within the object graph and its:

  1. Category (index) for the parent to use as a lookup

  2. Type that describes the object properties, field mapping, etc.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(category:, children:, name:, type:) ⇒ Group

Returns a new instance of Group.



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# File 'lib/hashematics/group.rb', line 18

def initialize(category:, children:, name:, type:)
  @category         = category
  @child_dictionary = Dictionary.new.add(children, &:name)
  @name             = name
  @type             = type

  freeze
end

Instance Attribute Details

#category ⇒ Object (readonly)

Returns the value of attribute category.



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# File 'lib/hashematics/group.rb', line 16

def category
  @category
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/hashematics/group.rb', line 16

def name
  @name
end

#type ⇒ Object (readonly)

Returns the value of attribute type.



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# File 'lib/hashematics/group.rb', line 16

def type
  @type
end

Instance Method Details

#add(record) ⇒ Object 



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# File 'lib/hashematics/group.rb', line 27

def add(record)
  category.add(record)

  child_dictionary.each { |c| c.add(record) }

  self
end

#children ⇒ Object 



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# File 'lib/hashematics/group.rb', line 35

def children
  child_dictionary.map(&:name)
end

#visit(parent_record = nil) ⇒ Object 



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# File 'lib/hashematics/group.rb', line 39

def visit(parent_record = nil)
  category.records(parent_record).map do |record|
    Visitor.new(group: self, record: record)
  end
end

#visit_children(name, parent_record = nil) ⇒ Object 



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# File 'lib/hashematics/group.rb', line 45

def visit_children(name, parent_record = nil)
  child_group(name)&.visit(parent_record) || []
end