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Class: ActiveRecord::ConnectionAdapters::PostgreSQL::OID::Array

Do not use. This class is for internal use only.
Relationships & Source Files
Namespace Children
Classes:
Data
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, ::ActiveModel::Type::Value
Instance Chain:
self, ::ActiveModel::Type::Helpers::Mutable, ::ActiveModel::Type::Value, ::ActiveModel::Type::SerializeCastValue
Inherits: ActiveModel::Type::Value
Defined in: activerecord/lib/active_record/connection_adapters/postgresql/oid/array.rb

Class Method Summary

::ActiveModel::Type::Value - Inherited

.new

Initializes a type with three basic configuration settings: precision, limit, and scale.

Instance Attribute Summary

::ActiveModel::Type::Helpers::Mutable - Included

#mutable?

::ActiveModel::Type::Value - Inherited

#limit, #precision, #scale,
#binary?

These predicates are not documented, as I need to look further into their use, and see if they can be removed entirely.
#mutable?, #serialized?

Instance Method Summary

::ActiveModel::Type::Helpers::Mutable - Included

#cast,
#changed_in_place?

raw_old_value will be the _before_type_cast version of the value (likely a string).

::ActiveModel::Type::Value - Inherited

#==, #as_json, #assert_valid_value,
#cast

::ActiveRecord::Type casts a value from user input (e.g. from a setter).
#changed?

Determines whether a value has changed for dirty checking.
#changed_in_place?

Determines whether the mutable value has been modified since it was read.
#deserialize

Converts a value from database input to the appropriate ruby type.
#eql?

Alias for ActiveModel::Type::Value#==.
#hash,
#serializable?

Returns true if this type can convert value to a type that is usable by the database.
#serialize

Casts a value from the ruby type to a type that the database knows how to understand.
#type

Returns the unique type name as a ::Symbol.
#cast_value

Convenience method for types which do not need separate type casting behavior for user and database inputs.
#force_equality?, #map,
#type_cast_for_schema

::ActiveRecord::Type casts a value for schema dumping.
#value_constructed_by_mass_assignment?

::ActiveModel::Type::SerializeCastValue - Included

#initialize, #itself_if_serialize_cast_value_compatible

Constructor Details

.new(subtype, delimiter = ",") ⇒ Array

[ GitHub ] 

  


# File 'activerecord/lib/active_record/connection_adapters/postgresql/oid/array.rb', line 15



def initialize(subtype, delimiter = ",")
  @subtype = subtype
  @delimiter = delimiter

  @pg_encoder = PG::TextEncoder::Array.new name: "#{type}[]", delimiter: delimiter
  @pg_decoder = PG::TextDecoder::Array.new name: "#{type}[]", delimiter: delimiter
end


  







Instance Attribute Details



  

    #delimiter   (readonly)
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/connection_adapters/postgresql/oid/array.rb', line 12



attr_reader :subtype, :delimiter


  








  

    #limit   (readonly)
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/connection_adapters/postgresql/oid/array.rb', line 13



delegate :type, :user_input_in_time_zone, :limit, :precision, :scale, to: :subtype


  








  

    #precision   (readonly)
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/connection_adapters/postgresql/oid/array.rb', line 13



delegate :type, :user_input_in_time_zone, :limit, :precision, :scale, to: :subtype


  








  

    #scale   (readonly)
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/connection_adapters/postgresql/oid/array.rb', line 13



delegate :type, :user_input_in_time_zone, :limit, :precision, :scale, to: :subtype


  








  

    #subtype   (readonly)
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/connection_adapters/postgresql/oid/array.rb', line 12



attr_reader :subtype, :delimiter


  








  

    #type   (readonly)
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/connection_adapters/postgresql/oid/array.rb', line 13



delegate :type, :user_input_in_time_zone, :limit, :precision, :scale, to: :subtype


  








  

    #user_input_in_time_zone   (readonly)
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/connection_adapters/postgresql/oid/array.rb', line 13



delegate :type, :user_input_in_time_zone, :limit, :precision, :scale, to: :subtype


  







Instance Method Details



  

    #==(other)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/connection_adapters/postgresql/oid/array.rb', line 56



def ==(other)
  other.is_a?(Array) &&
    subtype == other.subtype &&
    delimiter == other.delimiter
end


  








  

    #cast(value)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/connection_adapters/postgresql/oid/array.rb', line 34



def cast(value)
  if value.is_a?(::String)
    value = begin
      @pg_decoder.decode(value)
    rescue TypeError
      # malformed array string is treated as [], will raise in PG 2.0 gem
      # this keeps a consistent implementation
      []
    end
  end
  type_cast_array(value, :cast)
end


  








  

    #changed_in_place?(raw_old_value, new_value)  ⇒ Boolean 
  



  

    
  





  


  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/connection_adapters/postgresql/oid/array.rb', line 71



def changed_in_place?(raw_old_value, new_value)
  deserialize(raw_old_value) != new_value
end


  








  

    #deserialize(value)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/connection_adapters/postgresql/oid/array.rb', line 23



def deserialize(value)
  case value
  when ::String
    type_cast_array(@pg_decoder.decode(value), :deserialize)
  when Data
    type_cast_array(value.values, :deserialize)
  else
    super
  end
end


  








  

    #force_equality?(value)  ⇒ Boolean 
  



  

    
  





  


  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/connection_adapters/postgresql/oid/array.rb', line 75



def force_equality?(value)
  value.is_a?(::Array)
end


  








  

    #map(value, &block)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/connection_adapters/postgresql/oid/array.rb', line 67



def map(value, &block)
  value.is_a?(::Array) ? value.map(&block) : subtype.map(value, &block)
end


  








  

    #serialize(value)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/connection_adapters/postgresql/oid/array.rb', line 47



def serialize(value)
  if value.is_a?(::Array)
    casted_values = type_cast_array(value, :serialize)
    Data.new(@pg_encoder, casted_values)
  else
    super
  end
end


  








  

    #type_cast_array(value, method)   (private)
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/connection_adapters/postgresql/oid/array.rb', line 80



def type_cast_array(value, method)
  if value.is_a?(::Array)
    value.map { |item| type_cast_array(item, method) }
  else
    @subtype.public_send(method, value)
  end
end


  








  

    #type_cast_for_schema(value)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/connection_adapters/postgresql/oid/array.rb', line 62



def type_cast_for_schema(value)
  return super unless value.is_a?(::Array)
  "[" + value.map { |v| subtype.type_cast_for_schema(v) }.join(", ") + "]"
end