Class: RailsEventStore::Repositories::EventRepository

Inherits:
Object
  • Object
show all
Defined in:
lib/rails_event_store/repositories/event_repository.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ EventRepository

Returns a new instance of EventRepository.



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# File 'lib/rails_event_store/repositories/event_repository.rb', line 5

def initialize
  @adapter = ::RailsEventStore::Models::Event
end

Instance Attribute Details

#adapter ⇒ Object (readonly)

Returns the value of attribute adapter.



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# File 'lib/rails_event_store/repositories/event_repository.rb', line 8

def adapter
  @adapter
end

Instance Method Details

#create(event, stream_name) ⇒ Object 



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# File 'lib/rails_event_store/repositories/event_repository.rb', line 10

def create(event, stream_name)
  data = event.to_h.merge!(stream: stream_name, event_type: event.class.name)
  adapter.create(data)
  event
end

#delete_stream(stream_name) ⇒ Object 



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# File 'lib/rails_event_store/repositories/event_repository.rb', line 16

def delete_stream(stream_name)
  condition = {stream: stream_name}
  adapter.destroy_all condition
  nil
end

#get_all_events ⇒ Object 



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# File 'lib/rails_event_store/repositories/event_repository.rb', line 30

def get_all_events
  adapter.order('id ASC').order('stream').all.map(&method(:build_event_entity))
end

#has_event?(event_id) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rails_event_store/repositories/event_repository.rb', line 22

def has_event?(event_id)
  adapter.exists?(event_id: event_id)
end

#last_stream_event(stream_name) ⇒ Object 



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# File 'lib/rails_event_store/repositories/event_repository.rb', line 26

def last_stream_event(stream_name)
  build_event_entity(adapter.where(stream: stream_name).last)
end

#read_all_streams_backward(start_event_id, count) ⇒ Object 



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# File 'lib/rails_event_store/repositories/event_repository.rb', line 77

def read_all_streams_backward(start_event_id, count)
  stream = adapter
  unless start_event_id.equal?(:head)
    starting_event = adapter.find_by(event_id: start_event_id)
    stream = stream.where('id < ?', starting_event.id)
  end

  stream.order('id DESC').limit(count)
    .map(&method(:build_event_entity))
end

#read_all_streams_forward(start_event_id, count) ⇒ Object 



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# File 'lib/rails_event_store/repositories/event_repository.rb', line 66

def read_all_streams_forward(start_event_id, count)
  stream = adapter
  unless start_event_id.equal?(:head)
    starting_event = adapter.find_by(event_id: start_event_id)
    stream = stream.where('id > ?', starting_event.id)
  end

  stream.order('id ASC').limit(count)
    .map(&method(:build_event_entity))
end

#read_events_backward(stream_name, start_event_id, count) ⇒ Object 



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# File 'lib/rails_event_store/repositories/event_repository.rb', line 45

def read_events_backward(stream_name, start_event_id, count)
  stream = adapter.where(stream: stream_name)
  unless start_event_id.equal?(:head)
    starting_event = adapter.find_by(event_id: start_event_id)
    stream = stream.where('id < ?', starting_event.id)
  end

  stream.order('id DESC').limit(count)
    .map(&method(:build_event_entity))
end

#read_events_forward(stream_name, start_event_id, count) ⇒ Object 



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# File 'lib/rails_event_store/repositories/event_repository.rb', line 34

def read_events_forward(stream_name, start_event_id, count)
  stream = adapter.where(stream: stream_name)
  unless start_event_id.equal?(:head)
    starting_event = adapter.find_by(event_id: start_event_id)
    stream = stream.where('id > ?', starting_event.id)
  end

  stream.order('id ASC').limit(count)
    .map(&method(:build_event_entity))
end

#read_stream_events_backward(stream_name) ⇒ Object 



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# File 'lib/rails_event_store/repositories/event_repository.rb', line 61

def read_stream_events_backward(stream_name)
  adapter.where(stream: stream_name).order('id DESC')
    .map(&method(:build_event_entity))
end

#read_stream_events_forward(stream_name) ⇒ Object 



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# File 'lib/rails_event_store/repositories/event_repository.rb', line 56

def read_stream_events_forward(stream_name)
  adapter.where(stream: stream_name).order('id ASC')
    .map(&method(:build_event_entity))
end