Class: RedisMemo::MemoizeQuery::CachedSelect::BindParams

Inherits:
Object
  • Object
show all
Defined in:
lib/redis_memo/memoize_query/cached_select/bind_params.rb

Defined Under Namespace

Classes: Plan

Instance Method Summary collapse

Constructor Details

#initialize(left = nil, right = nil, operator = nil) ⇒ BindParams

Returns a new instance of BindParams.



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# File 'lib/redis_memo/memoize_query/cached_select/bind_params.rb', line 5

def initialize(left = nil, right = nil, operator = nil)
  @left = left
  @right = right
  @operator = operator
end

Instance Method Details

#extract! ⇒ Object

Extracted bind params is hash of sets: each key is a model class, each value is a set of hashes for memoized column conditions. Example:

{
   Site => [
     {name: 'a', city: 'b'},
     {name: 'a', city: 'c'},
     {name: 'b', city: 'b'},
     {name: 'b', city: 'c'},
   ],
}



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# File 'lib/redis_memo/memoize_query/cached_select/bind_params.rb', line 56

def extract!
  return if operator.nil?

  left.extract!
  right.extract!
  __send__(:"#{operator}!")
end

#params ⇒ Object 



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# File 'lib/redis_memo/memoize_query/cached_select/bind_params.rb', line 64

def params
  @params ||= Hash.new do |models, model|
    models[model] = Set.new
  end
end

#product(other) ⇒ Object 



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# File 'lib/redis_memo/memoize_query/cached_select/bind_params.rb', line 17

def product(other)
  return unless other

  self.class.new(self, other, __method__)
end

#should_cache? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/redis_memo/memoize_query/cached_select/bind_params.rb', line 23

def should_cache?
  plan!

  if plan.model_attrs.empty? || plan.dependency_size_estimation.to_i > RedisMemo::DefaultOptions.max_query_dependency_size
    return false
  end

  plan.model_attrs.each do |model, attrs_set|
    return false if attrs_set.empty?

    attrs_set.each do |attrs|
      return false unless RedisMemo::MemoizeQuery
        .memoized_columns(model)
        .include?(attrs.keys.sort)
    end
  end

  true
end

#union(other) ⇒ Object 



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# File 'lib/redis_memo/memoize_query/cached_select/bind_params.rb', line 11

def union(other)
  return unless other

  self.class.new(self, other, __method__)
end