Class: Tina4::DocStore::MongoView

Inherits:
SimpleDelegator
  • Object
show all
Defined in:
lib/tina4/docstore.rb

Overview

A Mongo::Collection::View that also answers to_list, and accepts every sort spelling the fallback Cursor accepts.

Instance Method Summary collapse

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(name, *args, &block) ⇒ Object

A View is IMMUTABLE - sort/limit/skip/projection each return a NEW View. Without re-wrapping, the first chained call would hand back a bare View and to_list would vanish mid-chain: exactly the "works until you sort it" surprise this ADR exists to stop.



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# File 'lib/tina4/docstore.rb', line 782

def method_missing(name, *args, &block)
  result = super
  result.is_a?(::Mongo::Collection::View) ? MongoView.new(result) : result
end

Instance Method Details

#sort(key_or_list, direction = 1) ⇒ Object

ADR-0036: ONE sort contract on both providers.

Mongo::Collection::View#sort takes a single spec document, so sort("total", -1) raised ArgumentError and sort([["total", -1]]) reached the server as an array and came back TypeMismatch. Normalising here means all three spellings work on the driver exactly as they do on the fallback - which is the point of the swap.



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# File 'lib/tina4/docstore.rb', line 774

def sort(key_or_list, direction = 1)
  MongoView.new(__getobj__.sort(DocStore.sort_spec(key_or_list, direction).to_h))
end

#to_list ⇒ Object

to_a is the driver's spelling and stays authoritative; to_list is the uniform Tina4 spelling the SQLite Cursor also answers.



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# File 'lib/tina4/docstore.rb', line 765

def to_list = __getobj__.to_a