Class: Tyrion::Criteria

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/tyrion/criteria.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(storage, klass) ⇒ Criteria

Returns a new instance of Criteria.



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# File 'lib/tyrion/criteria.rb', line 7

def initialize(storage, klass)
  @storage = storage
  @klass = klass
  @constraints = []
end

Instance Attribute Details

#klass ⇒ Object (readonly)

Returns the value of attribute klass.



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# File 'lib/tyrion/criteria.rb', line 5

def klass
  @klass
end

Instance Method Details

#all ⇒ Object 



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# File 'lib/tyrion/criteria.rb', line 13

def all
  self
end

#asc(*keys) ⇒ Object 



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# File 'lib/tyrion/criteria.rb', line 32

def asc(*keys)
  @constraints << [:sort, [keys, true]]
  self
end

#desc(*keys) ⇒ Object 



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# File 'lib/tyrion/criteria.rb', line 37

def desc(*keys)
  @constraints << [:sort, [keys, false]]
  self
end

#each(&block) ⇒ Object 



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# File 'lib/tyrion/criteria.rb', line 48

def each(&block)
  fetch_documents if not @data
  @data.each{ |c| block.call(c) }
end

#inspect ⇒ Object 



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# File 'lib/tyrion/criteria.rb', line 42

def inspect
  "<Criteria:0x#{__id__.to_s(16)}\n" +
  " Model:#{@klass.capitalize},\n" +
  " Constraints: " + @constraints.inspect[1..-2] + ">"
end

#last ⇒ Object 



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# File 'lib/tyrion/criteria.rb', line 53

def last
  to_a.last
end

#limit(n) ⇒ Object 



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# File 'lib/tyrion/criteria.rb', line 22

def limit(n)
  @constraints << [:limit, n]
  self
end

#skip(n) ⇒ Object 



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# File 'lib/tyrion/criteria.rb', line 27

def skip(n)
  @constraints << [:skip, n]
  self
end

#where(params = {}) ⇒ Object 



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# File 'lib/tyrion/criteria.rb', line 17

def where(params = {})
  @constraints << [:where, params]
  self
end