Class: ArelExtensions::Nodes::JsonNode

Inherits:
Function
  • Object
show all
Defined in:
lib/arel_extensions/nodes/json.rb

Direct Known Subclasses

Json, JsonGet, JsonGroup, JsonMerge, JsonSet

Constant Summary collapse

RETURN_TYPE = 
:json

Constants inherited from Function

Function::MBSTRING

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from Function

#!=, #==, #as, #convert_to_date_node, #convert_to_datetime_node, #convert_to_node, #convert_to_number, #convert_to_string_node, #expr, #left, #return_type, #right, #type_of_attribute

Methods included from Predications

#cast, #convert_to_node, #imatches, #in, #matches, #not_in, #when

Instance Attribute Details

#dict ⇒ Object

Returns the value of attribute dict.



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# File 'lib/arel_extensions/nodes/json.rb', line 6

def dict
  @dict
end

Instance Method Details

#convert_to_json_node(n) ⇒ Object 



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# File 'lib/arel_extensions/nodes/json.rb', line 29

def convert_to_json_node(n)
  case n
  when JsonNode
    n.dict
  when Array
    n.map{|e|
       (e.is_a?(Array) || e.is_a?(Hash)) ? Json.new(e) : convert_to_json_node(e)
    }
  when Hash
    n.reduce({}){|acc,v|
      acc[convert_to_json_node(v[0])] = (v[1].is_a?(Array) || v[1].is_a?(Hash)) ? Json.new(v[1]) : convert_to_json_node(v[1])
      acc
    }
  when String, Numeric, TrueClass, FalseClass
    convert_to_node(n)
  when Date
    convert_to_node(n.strftime("%Y-%m-%d"))
  when DateTime, Time
    convert_to_node(n.strftime("%Y-%m-%dT%H:%M:%S.%L%:z"))
  when NilClass
    Arel.sql('null')
  else
    convert_to_node(n)
  end
end

#get(key) ⇒ Object 



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# File 'lib/arel_extensions/nodes/json.rb', line 13

def get key
  JsonGet.new(self,key)
end

#group(as_array = true, orders = nil) ⇒ Object 



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# File 'lib/arel_extensions/nodes/json.rb', line 21

def group as_array = true, orders = nil
  JsonGroup.new(self,as_array, orders)
end

#hash ⇒ Object 



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# File 'lib/arel_extensions/nodes/json.rb', line 25

def hash
  [@dict].hash
end

#merge(*expr) ⇒ Object 



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# File 'lib/arel_extensions/nodes/json.rb', line 8

def merge *expr
  args = [self] + expr.map{|e| Json.new(e)}
  JsonMerge.new(args)
end

#set(key, value) ⇒ Object 



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# File 'lib/arel_extensions/nodes/json.rb', line 17

def set key, value
  JsonSet.new(self,key,value)
end

#type_of_node(v) ⇒ Object 



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# File 'lib/arel_extensions/nodes/json.rb', line 55

def type_of_node(v)
  if v.is_a?(Arel::Attributes::Attribute)
    self.type_of_attribute(v)
  elsif v.respond_to?(:return_type)
    v.return_type
  elsif v.nil?
    :nil
  else
    :string
  end
end