Class: EventSorcerer::AggregateLoader

Inherits:
Object
  • Object
show all
Defined in:
lib/event_sorcerer/aggregate_loader.rb

Overview

Public: Service class for loading aggregates from the event store.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(klass, id, events, version, prohibit_new = true) ⇒ AggregateLoader

Public: Creates a new AggregateLoader instance.

klass - class for the aggregate to be loaded. id - id for the aggregate to be loaded. prohibit_new - whether or not to raise an error if aggregate not existing.



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# File 'lib/event_sorcerer/aggregate_loader.rb', line 12

def initialize(klass, id, events, version, prohibit_new = true)
  @events       = events
  @id           = id
  @klass        = klass
  @prohibit_new = prohibit_new
  @version      = version
end

Instance Attribute Details

#id ⇒ Object (readonly)

Public: Returns the id for the aggregate to be loaded.



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# File 'lib/event_sorcerer/aggregate_loader.rb', line 5

def id
  @id
end

Instance Method Details

#load ⇒ Object

Public: Wraps and returns aggregate in a proxy.

Returns an AggregateProxy. Raises AggregateNotFound if aggregate not found and prohibit_new is true.



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# File 'lib/event_sorcerer/aggregate_loader.rb', line 24

def load
  fail AggregateNotFound if prohibit_new && new_aggregate?

  AggregateProxy.new(aggregate)
end