Class: IdentityCache::Cached::Recursive::Association

Inherits:
Association
  • Object
show all
Defined in:
lib/identity_cache/cached/recursive/association.rb

Overview

:nodoc:

Instance Attribute Summary collapse

Attributes inherited from Association

#cached_accessor_name, #name, #records_variable_name, #reflection

Instance Method Summary collapse

Methods inherited from Association

#embedded?, #inverse_name, #validate

Constructor Details

#initialize(name, reflection:) ⇒ Association

Returns a new instance of Association.



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# File 'lib/identity_cache/cached/recursive/association.rb', line 6

def initialize(name, reflection:)
  super
  @dehydrated_variable_name = :"@dehydrated_#{name}"
end

Instance Attribute Details

#dehydrated_variable_name ⇒ Object (readonly)

Returns the value of attribute dehydrated_variable_name.



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# File 'lib/identity_cache/cached/recursive/association.rb', line 11

def dehydrated_variable_name
  @dehydrated_variable_name
end

Instance Method Details

#build ⇒ Object 



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# File 'lib/identity_cache/cached/recursive/association.rb', line 13

def build
  cached_association = self

  model = reflection.active_record
  model.define_method(cached_accessor_name) do
    cached_association.read(self)
  end

  ParentModelExpiration.add_parent_expiry_hook(self)
end

#clear(record) ⇒ Object 



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# File 'lib/identity_cache/cached/recursive/association.rb', line 52

def clear(record)
  if record.instance_variable_defined?(records_variable_name)
    record.remove_instance_variable(records_variable_name)
  end
end

#embedded_by_reference? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/identity_cache/cached/recursive/association.rb', line 68

def embedded_by_reference?
  false
end

#embedded_recursively? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/identity_cache/cached/recursive/association.rb', line 72

def embedded_recursively?
  true
end

#fetch(records) ⇒ Object 



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# File 'lib/identity_cache/cached/recursive/association.rb', line 58

def fetch(records)
  fetch_async(LoadStrategy::Eager, records) { |child_records| child_records }
end

#fetch_async(load_strategy, records) ⇒ Object 



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# File 'lib/identity_cache/cached/recursive/association.rb', line 62

def fetch_async(load_strategy, records)
  fetch_embedded_async(load_strategy, records) do
    yield records.flat_map(&cached_accessor_name).tap(&:compact!)
  end
end

#read(record) ⇒ Object 



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# File 'lib/identity_cache/cached/recursive/association.rb', line 24

def read(record)
  assoc = record.association(name)

  if assoc.klass.should_use_cache? && !assoc.loaded? && assoc.target.blank?
    if record.instance_variable_defined?(records_variable_name)
      record.instance_variable_get(records_variable_name)
    elsif record.instance_variable_defined?(dehydrated_variable_name)
      dehydrated_target = record.instance_variable_get(dehydrated_variable_name)
      association_target = hydrate_association_target(assoc.klass, dehydrated_target)
      record.remove_instance_variable(dehydrated_variable_name)
      set_with_inverse(record, association_target)
    else
      assoc.load_target
    end
  else
    assoc.load_target
  end
end

#set_with_inverse(record, association_target) ⇒ Object 



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# File 'lib/identity_cache/cached/recursive/association.rb', line 47

def set_with_inverse(record, association_target)
  set_inverse(record, association_target)
  write(record, association_target)
end

#write(record, association_target) ⇒ Object 



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# File 'lib/identity_cache/cached/recursive/association.rb', line 43

def write(record, association_target)
  record.instance_variable_set(records_variable_name, association_target)
end