Class: Mongo::ObjectSerializer

Inherits:
Object
  • Object
show all
Defined in:
lib/mongo_db/object/object_serializer.rb

Constant Summary collapse

SIMPLE_TYPES = 
[
  Fixnum, Float,
  TrueClass, FalseClass,
  String, Symbol,
  Array, Hash, Set,
  Data, DateTime,
  NilClass, Time,
  BSON::ObjectId
].to_set

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(object) ⇒ ObjectSerializer

Returns a new instance of ObjectSerializer.



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# File 'lib/mongo_db/object/object_serializer.rb', line 14

def initialize object
  @object = object
end

Instance Attribute Details

#object ⇒ Object (readonly)

Returns the value of attribute object.



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# File 'lib/mongo_db/object/object_serializer.rb', line 12

def object
  @object
end

Class Method Details

.build(doc) ⇒ Object 



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# File 'lib/mongo_db/object/object_serializer.rb', line 229

def build doc
  obj = _build doc
  serializer = Mongo::ObjectSerializer.new obj
  serializer.update_internal_state!
  obj
end

Instance Method Details

#_id ⇒ Object 



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# File 'lib/mongo_db/object/object_serializer.rb', line 119

def _id
  object.instance_variable_get(:@_id)
end

#insert(opts, collection) ⇒ Object 



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# File 'lib/mongo_db/object/object_serializer.rb', line 26

def insert opts, collection
  opts, validate, callbacks = parse_object_options opts

  # before callbacks
  return false if callbacks and !run_callbacks(objects, [:before, :validate], [:before, :save], [:before, :create])

  # validation
  return false if validate  and !valid?

  # saving document
  doc = to_document
  collection.insert_without_object doc, opts
  id = doc[:_id] || doc['_id'] || raise("internal error: no id after document insertion (#{doc})!")
  object.instance_variable_set :@_id, id
  update_internal_state!

  # after callbacks
  run_callbacks(objects, [:after, :create], [:after, :save], [:after, :validate]) if callbacks

  true
end

#objects ⇒ Object 



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# File 'lib/mongo_db/object/object_serializer.rb', line 141

def objects
  @objects_cache ||= begin
    objects = []
    _each_object(object){|obj| objects << obj}
    objects
  end
end

#remove(opts, collection) ⇒ Object 



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# File 'lib/mongo_db/object/object_serializer.rb', line 91

def remove opts, collection
  opts, validate, callbacks = parse_object_options opts

  # before callbacks
  if callbacks
    # we need to run :destroy callbacks also on detached embedded objects.
    all_objects = (objects + original_objects).uniq{|o| o.object_id}
    return false unless run_callbacks(all_objects, [:before, :validate], [:before, :destroy])
  end

  # validation
  return false if validate  and !valid?

  # saving document
  id = _id || "can't destroy object without _id (#{arg})!"
  collection.remove_without_object({_id: id}, opts)
  update_internal_state!

  # after callbacks
  run_callbacks(objects, [:after, :destroy], [:after, :validate]) if callbacks

  true
end

#run_callbacks(objects, *callbacks) ⇒ Object 



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# File 'lib/mongo_db/object/object_serializer.rb', line 130

def run_callbacks objects, *callbacks
  callbacks.each do |type, method_name|
    objects.each do |obj|
      if obj.respond_to? :_run_callbacks
        return false if obj._run_callbacks(type, method_name) == false
      end
    end
  end
  true
end

#save(opts, collection) ⇒ Object 



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# File 'lib/mongo_db/object/object_serializer.rb', line 18

def save opts, collection
  if _id
    self.update opts.merge(upsert: true), collection
  else
    self.insert opts, collection
  end
end

#to_document ⇒ Object 



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# File 'lib/mongo_db/object/object_serializer.rb', line 115

def to_document
  _to_document object
end

#update(opts, collection) ⇒ Object 



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# File 'lib/mongo_db/object/object_serializer.rb', line 48

def update opts, collection
  opts, validate, callbacks = parse_object_options opts

  # before callbacks.
  # we need to sort out embedded objects into created, updated and destroyed
  created_objects, updated_objects, destroyed_objects = [], [], []
  if callbacks
    original_ids = original_objects.collect{|obj| obj.object_id}.to_set
    objects.each do |obj|
      (original_ids.include?(obj.object_id) ? updated_objects : created_objects) << obj
    end

    objects_ids = objects.collect{|obj| obj.object_id}.to_set
    destroyed_objects = original_objects.select{|obj| !objects_ids.include?(obj.object_id)}

    all_successfull = [
      run_callbacks(created_objects,   [:before, :validate], [:before, :save],   [:before, :create]),
      run_callbacks(updated_objects,   [:before, :validate], [:before, :save],   [:before, :update]),
      run_callbacks(destroyed_objects, [:before, :validate], [:before, :destroy])
    ].reduce(:&)

    return false unless all_successfull
  end

  # validation
  return false if validate  and !valid?

  # saving document
  doc = to_document
  id = _id || raise("can't update document without id (#{doc})!")
  collection.update_without_object({_id: id}, doc, opts)
  update_internal_state!

  # after callbacks
  if callbacks
    run_callbacks(created_objects,   [:after, :create],  [:after, :save],    [:after, :validate])
    run_callbacks(updated_objects,   [:after, :update],  [:after, :save],    [:after, :validate])
    run_callbacks(destroyed_objects, [:after, :destroy], [:after, :validate])
  end

  true
end

#update_internal_state! ⇒ Object 



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# File 'lib/mongo_db/object/object_serializer.rb', line 149

def update_internal_state!
  self.original_objects = objects if Mongo.defaults[:callbacks]
end

#valid? ⇒ Boolean

Returns:



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# File 'lib/mongo_db/object/object_serializer.rb', line 123

def valid?
  objects.each do |obj|
    return false if obj.respond_to?(:_valid?) and !obj._valid?
  end
  true
end