Class: Daodalus::DSL::Aggregation::Project

Inherits:
Object
  • Object
show all
Includes:
Daodalus::DSL::Aggregations
Defined in:
lib/daodalus/dsl/aggregation/project.rb

Instance Method Summary collapse

Methods included from Daodalus::DSL::Aggregations

#aggregate, #group, #limit, #match, #pipeline, #skip, #sort, #unwind

Constructor Details

#initialize(dao, aggregations, projection = {}, keys) ⇒ Project

Returns a new instance of Project.



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# File 'lib/daodalus/dsl/aggregation/project.rb', line 7

def initialize(dao, aggregations, projection = {}, keys)
  @dao          = dao
  @aggregations = aggregations
  @projection   = projection
  @keys         = keys
end

Instance Method Details

#add(*others) ⇒ Object Also known as: plus 



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# File 'lib/daodalus/dsl/aggregation/project.rb', line 31

def add(*others)
  Project.new(dao, aggregations, @projection, ['$add' => keys + others])
end

#as(aka) ⇒ Object 



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# File 'lib/daodalus/dsl/aggregation/project.rb', line 23

def as(aka)
  Project.new(dao, aggregations, @projection, [aka => keys.first])
end

#divide(other) ⇒ Object Also known as: divided_by 



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# File 'lib/daodalus/dsl/aggregation/project.rb', line 36

def divide(other)
  Project.new(dao, aggregations, @projection, ['$divide' => keys + [other]])
end

#eq(*others) ⇒ Object 



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# File 'lib/daodalus/dsl/aggregation/project.rb', line 27

def eq(*others)
  Project.new(dao, aggregations, @projection, ['$eq' => keys + others])
end

#mod(other) ⇒ Object 



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# File 'lib/daodalus/dsl/aggregation/project.rb', line 51

def mod(other)
  Project.new(dao, aggregations, @projection, ['$mod' => keys + [other]])
end

#multiply(other) ⇒ Object Also known as: multiplied_by 



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# File 'lib/daodalus/dsl/aggregation/project.rb', line 41

def multiply(other)
  Project.new(dao, aggregations, @projection, ['$multiply' => keys + [other]])
end

#project(*keys) ⇒ Object Also known as: and 



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# File 'lib/daodalus/dsl/aggregation/project.rb', line 18

def project(*keys)
  Project.new(dao, aggregations, projection, keys)
end

#subtract(other) ⇒ Object Also known as: minus 



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# File 'lib/daodalus/dsl/aggregation/project.rb', line 46

def subtract(other)
  Project.new(dao, aggregations, @projection, ['$subtract' => keys + [other]])
end

#to_aggregation ⇒ Object 



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# File 'lib/daodalus/dsl/aggregation/project.rb', line 14

def to_aggregation
  { '$project' => { '_id' => 0 }.merge(projection) }
end