Class: Hyperactive::Index::MatchSaver

Inherits:
Object
  • Object
show all
Defined in:
lib/hyperactive/index.rb

Overview

A tiny callable class that saves stuff inside containers if they match certain criteria.

Instance Method Summary collapse

Constructor Details

#initialize(key, matcher, mode) ⇒ MatchSaver

Initialize this MatchSaver with a key, a callable matcher and a mode (:select, :reject, :delete_if_match or :delete_unless_match).



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# File 'lib/hyperactive/index.rb', line 96

def initialize(key, matcher, mode)
  @key = key
  @matcher = matcher
  @mode = mode
end

Instance Method Details

#call(*arguments, &block) ⇒ Object

Depending on @mode and return value of @matcher.call may save record in the Hash-like container named @key in the main database after having yielded to block.



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# File 'lib/hyperactive/index.rb', line 106

def call(*arguments, &block)
  yield

  record = arguments.first

  case @mode
  when :select
    if @matcher.call(record)
      Archipelago::Pirate::BLACKBEARD[@key, record.transaction][record.record_id] = record
    else
      Archipelago::Pirate::BLACKBEARD[@key, record.transaction].delete(record.record_id)
    end
  when :reject
    if @matcher.call(record)
      Archipelago::Pirate::BLACKBEARD[@key, record.transaction].delete(record.record_id)
    else
      Archipelago::Pirate::BLACKBEARD[@key, record.transaction][record.record_id] = record
    end
  when :delete_if_match
    if @matcher.call(record)
      Archipelago::Pirate::BLACKBEARD[@key, record.transaction].delete(record.record_id)
    end
  when :delete_unless_match
    unless @matcher.call(record)
      Archipelago::Pirate::BLACKBEARD[@key, record.transaction].delete(record.record_id)
    end
  end
end