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perspective

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An event sourcing library based upon asynchronously generated perspectives

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perspective lib perspective projection projection_registry.ex
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lib/perspective/projection/projection_registry.ex 

defmodule Perspective.ProjectionRegistry do

  defmacro __using__(_) do

    quote do

      import Perspective.ProjectionRegistry

      import Perspective.ModuleRegistry

      register_module(Perspective.ProjectionRegistry)

      @projections []

    end

  end



  defmacro register_projection(projection) do

    quote do

      @projections [unquote(projection).projection | @projections]

      def projections, do: @projections

    end

  end



  def projections do

    Perspective.ModuleRegistry.list(Perspective.ProjectionRegistry)

    |> Enum.map(fn projection -> projection.projection_spec end)

  end

end