Class: Plucky::CriteriaHash

Inherits:
Object show all
Defined in:
lib/plucky/criteria_hash.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(hash = {}, options = {}) ⇒ CriteriaHash

Returns a new instance of CriteriaHash.



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# File 'lib/plucky/criteria_hash.rb', line 6

def initialize(hash={}, options={})
  @source, @options = {}, options
  hash.each { |key, value| self[key] = value }
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method, *args, &block) ⇒ Object (private) 



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# File 'lib/plucky/criteria_hash.rb', line 104

def method_missing(method, *args, &block)
  @source.send(method, *args, &block)
end

Instance Attribute Details

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/plucky/criteria_hash.rb', line 4

def options
  @options
end

#source ⇒ Object (readonly)

Returns the value of attribute source.



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# File 'lib/plucky/criteria_hash.rb', line 4

def source
  @source
end

Instance Method Details

#==(other) ⇒ Object 



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# File 'lib/plucky/criteria_hash.rb', line 37

def ==(other)
  source == other.source
end

#[]=(key, value) ⇒ Object 



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# File 'lib/plucky/criteria_hash.rb', line 20

def []=(key, value)
  normalized_key = normalized_key(key)
  if key.is_a?(SymbolOperator)
    operator = "$#{key.operator}"
    normalized_value = normalized_value(normalized_key, operator, value)
    source[normalized_key] ||= {}
    source[normalized_key][operator] = normalized_value
  else
    if key == :conditions
      value.each { |k, v| self[k] = v }
    else
      normalized_value = normalized_value(normalized_key, normalized_key, value)
      source[normalized_key] = normalized_value
    end
  end
end

#initialize_copy(source) ⇒ Object 



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# File 'lib/plucky/criteria_hash.rb', line 11

def initialize_copy(source)
  super
  @options = @options.dup
  @source  = @source.dup
  each do |key, value|
    self[key] = value.clone if value.duplicable?
  end
end

#merge(other) ⇒ Object 



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# File 'lib/plucky/criteria_hash.rb', line 45

def merge(other)
  target = source.dup
  other.source.each_key do |key|
    value, other_value = target[key], other[key]
    target[key] =
      if target.key?(key)
        value_is_hash = value.is_a?(Hash)
        other_is_hash = other_value.is_a?(Hash)

        if value_is_hash && other_is_hash
          value.update(other_value) do |key, old_value, new_value|
            Array(old_value).concat(Array(new_value)).uniq
          end
        elsif value_is_hash && !other_is_hash
          if modifier_key = value.keys.detect { |k| k.to_s[0, 1] == '$' }
            value[modifier_key].concat(Array(other_value)).uniq!
          else
            # kaboom! Array(value).concat(Array(other_value)).uniq
          end
        elsif other_is_hash && !value_is_hash
          if modifier_key = other_value.keys.detect { |k| k.to_s[0, 1] == '$' }
            other_value[modifier_key].concat(Array(value)).uniq!
          else
            # kaboom! Array(value).concat(Array(other_value)).uniq
          end
        else
          Array(value).concat(Array(other_value)).uniq
        end
      else
        other_value
      end
  end
  self.class.new(target)
end

#merge!(other) ⇒ Object 



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# File 'lib/plucky/criteria_hash.rb', line 80

def merge!(other)
  merge(other).to_hash.each do |key, value|
    self[key] = value
  end
end

#object_ids ⇒ Object 



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# File 'lib/plucky/criteria_hash.rb', line 86

def object_ids
  @options[:object_ids] ||= []
end

#object_ids=(value) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/plucky/criteria_hash.rb', line 90

def object_ids=(value)
  raise ArgumentError unless value.is_a?(Array)
  @options[:object_ids] = value.flatten
end

#simple? ⇒ Boolean

The definition of simple is querying by only _id or _id and _type. If this is the case, you can use IdentityMap in library to not perform query and instead just return from map.

Returns:

  • (Boolean) 


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# File 'lib/plucky/criteria_hash.rb', line 98

def simple?
  key_set = keys.to_set
  key_set == [:_id].to_set || key_set == [:_id, :_type].to_set
end

#to_hash ⇒ Object 



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# File 'lib/plucky/criteria_hash.rb', line 41

def to_hash
  source
end