Class: RailsEventStoreMongoid::EventRepository

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(adapter: ::RailsEventStoreMongoid::Event) ⇒ EventRepository

Returns a new instance of EventRepository.



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# File 'lib/rails_event_store_mongoid/event_repository.rb', line 4

def initialize(adapter: ::RailsEventStoreMongoid::Event)
  @adapter = adapter
end

Instance Attribute Details

#adapter ⇒ Object (readonly)

Returns the value of attribute adapter.



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# File 'lib/rails_event_store_mongoid/event_repository.rb', line 7

def adapter
  @adapter
end

Instance Method Details

#create(event, stream_name) ⇒ Object 



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# File 'lib/rails_event_store_mongoid/event_repository.rb', line 9

def create(event, stream_name)
  adapter.create(
    stream:     stream_name,
    event_id:   event.event_id,
    event_type: event.class,
    data:       event.data,
    meta:       event.metadata,
  )
  event
end

#delete_stream(stream_name) ⇒ Object 



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# File 'lib/rails_event_store_mongoid/event_repository.rb', line 20

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

#has_event?(event_id) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rails_event_store_mongoid/event_repository.rb', line 25

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

#last_stream_event(stream_name) ⇒ Object 



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# File 'lib/rails_event_store_mongoid/event_repository.rb', line 29

def last_stream_event(stream_name)
  build_event_entity(adapter.where(stream: stream_name).desc(:ts).first)
end

#read_all_streams_backward(start_event_id, count) ⇒ Object 



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# File 'lib/rails_event_store_mongoid/event_repository.rb', line 76

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(:ts.lt => starting_event.ts)
  end

  stream.desc(:ts).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_mongoid/event_repository.rb', line 65

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(:ts.gt => starting_event.ts)
  end

  stream.asc(:ts).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_mongoid/event_repository.rb', line 44

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(:ts.lt => starting_event.ts)
  end

  stream.desc(:ts).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_mongoid/event_repository.rb', line 33

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(:ts.gt => starting_event.ts)
  end

  stream.asc(:ts).limit(count)
    .map(&method(:build_event_entity))
end

#read_stream_events_backward(stream_name) ⇒ Object 



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# File 'lib/rails_event_store_mongoid/event_repository.rb', line 60

def read_stream_events_backward(stream_name)
  adapter.where(stream: stream_name).desc(:ts)
    .map(&method(:build_event_entity))
end

#read_stream_events_forward(stream_name) ⇒ Object 



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# File 'lib/rails_event_store_mongoid/event_repository.rb', line 55

def read_stream_events_forward(stream_name)
  adapter.where(stream: stream_name).asc(:ts)
    .map(&method(:build_event_entity))
end