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validate_aggregates_supported.ex
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validate_aggregates_supported.ex
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defmodule Ash.Resource.Verifiers.ValidateAggregatesSupported do
@moduledoc """
Confirms that all aggregates are supported by the data layer
"""
use Spark.Dsl.Verifier
alias Spark.Dsl.Verifier
alias Spark.Error.DslError
@impl true
def verify(dsl_state) do
resource = Verifier.get_persisted(dsl_state, :module)
dsl_state
|> Verifier.get_entities([:aggregates])
|> Enum.each(fn %{relationship_path: relationship_path, name: name} ->
check_aggregatable(resource, resource, name, relationship_path)
end)
:ok
end
defp check_aggregatable(_resource, _root_resource, _name, []), do: :ok
defp check_aggregatable(resource, root_resource, name, [relationship_name | rest]) do
relationship = Ash.Resource.Info.relationship(resource, relationship_name)
if !relationship do
raise DslError,
module: root_resource,
message:
"relationship referenced in aggregate `#{inspect(resource)}.#{relationship_name}` does not exist",
path: [:aggregates, name]
end
if Ash.DataLayer.data_layer_can?(
resource,
{:aggregate_relationship, relationship}
) do
check_aggregatable(relationship.destination, root_resource, name, rest)
else
raise DslError,
module: root_resource,
message: "#{inspect(resource)}.#{relationship.name} is not aggregatable",
path: [:aggregates, name]
end
end
end