Class: Tarantool::Record

Inherits:
BaseRecord
  • Object
show all
Extended by:
ActiveModel::Callbacks, ActiveModel::Naming
Includes:
ActiveModel::AttributeMethods, ActiveModel::Dirty, ActiveModel::Serialization, ActiveModel::Serializers::JSON, ActiveModel::Serializers::Xml, ActiveModel::Validations
Defined in:
lib/tarantool/record.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(attributes = {}) ⇒ Record

Returns a new instance of Record.



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# File 'lib/tarantool/record.rb', line 75

def initialize(attributes = {})
  @__new_record = true
  @attributes = self.class.default_values.dup
  run_callbacks(:initialize) do
    init attributes
  end
end

Class Method Details

.define_field_accessor(name, type) ⇒ Object 



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# File 'lib/tarantool/record.rb', line 34

def define_field_accessor(name, type)
  generated_attribute_methods.class_eval <<-"EOF", __FILE__, __LINE__ - 1
    def #{name}
      @attributes[:"#{name}"]
    end
  EOF

  if Symbol === type
    convert_code = case type
       when :int, :int64, :varint, :int16, :int8, :sint, :sint64, :sint16, :sint8
         "v = v.to_i  if String === v"
       when :string, :bytes
         ""
       else
         if Serializers::MAP[type]
           "v = Serializers::MAP[#{type.inspect}].decode(v)  if String === v"
         else
           raise ArgumentError, "unknown field type #{type.inspect}"
         end
       end

    generated_attribute_methods.class_eval <<-"EOF", __FILE__, __LINE__ - 1
      def #{name}=(v)
        #{convert_code}
        #{name}_will_change!  unless v == @attributes[:"#{name}"] || new_record?
        @attributes[:"#{name}"] = v
      end
    EOF
  else
    generated_attribute_methods.class_eval do
      define_method("#{name}=") do |v|
        v = type.decode(v)  if String === v
        send(:"#{name}_will_change!") unless v == @attributes[name]
        @attributes[name] = v
      end
    end
  end
  define_attribute_method name
end

.set_space_no(val) ⇒ Object 



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# File 'lib/tarantool/record.rb', line 21

def set_space_no(val)
  self.space_no = val
end

.set_tarantool(val) ⇒ Object 



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# File 'lib/tarantool/record.rb', line 25

def set_tarantool(val)
  case val.class.name
  when 'Tarantool::BlockDB', 'Tarantool::FiberDB'
    self.tarantool = val
  else
    raise "Tarantool should be blocking of fibered!!! (i.e. of class Tarantool::BlockDB or Tarantool::FiberDB) (got #{val.class})"
  end
end

Instance Method Details

#__fetched(attributes) ⇒ Object 



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# File 'lib/tarantool/record.rb', line 87

def __fetched(attributes)
  @__new_record = false
  # well, initalize callback could call #attributes
  @attributes = self.class.default_values.dup
  run_callbacks(:initialize) do
    @attributes = attributes
  end
  self
end

#_in_callbacks(&blk) ⇒ Object 



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# File 'lib/tarantool/record.rb', line 97

def _in_callbacks(&blk)
  run_callbacks(:save) {
    run_callbacks(new_record? ? :create : :update, &blk)
  }
end

#destroy ⇒ Object 



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# File 'lib/tarantool/record.rb', line 158

def destroy
  run_callbacks :destroy do
    self.class.delete id
    true
  end
end

#init(attributes) ⇒ Object 



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# File 'lib/tarantool/record.rb', line 83

def init(attributes)
  set_attributes(attributes)
end

#save(and_reload = true) ⇒ Object 



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# File 'lib/tarantool/record.rb', line 103

def save(and_reload = true)
  _in_callbacks do
    if valid?
      changes = changes()
      if new_record?
        if and_reload
          @attributes = space.insert(@attributes, return_tuple: true)
        else
          space.insert(@attributes)
        end
      else
        return true if changes.size == 0
        ops = []
        changes.each do |k, (old, new)|
          ops << [k.to_sym, :set, new]
        end
        if and_reload
          unless new_attrs = space.update(id, ops, return_tuple: true)
            _raise_doesnt_exists
          end
        else
          if space.update(id, ops) == 0
            _raise_doesnt_exists
          end
        end
      end
      @previously_changed = changes
      @changed_attributes.clear
      old_record!
      true
    else
      false
    end
  end
end

#update(ops) ⇒ Object

update record in db first, reload updated fileds then (Contrasting with LightRecord, where it reloads all fields) Consider that update operation does not count changes made by attr setters in your code, only field values in DB.

record.update({:state => 'sleep', :sleep_count => [:+, 1]})
record.update([[:state, 'sleep'], [:sleep_count, :+, 1]])

Raises:

  • (UpdateNewRecord) 


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# File 'lib/tarantool/record.rb', line 146

def update(ops)
  raise UpdateNewRecord, "Could not call update on new record"  if @__new_record
  unless new_attrs = space.update(id, ops, return_tuple: true)
    _raise_doesnt_exists
  end
  for op in ops
    field = op.flatten.first
    @attributes[field] = new_attrs[field]
  end
  self
end