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ash_postgres
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1.3.68
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1.3.54
1.3.53
1.3.52
1.3.51
1.3.50
1.3.49
1.3.48
1.3.47
1.3.46
1.3.45
1.3.44
1.3.43
1.3.42
1.3.41
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1.3.37
1.3.36
1.3.35
1.3.34
1.3.33
1.3.32
1.3.31
1.3.30
1.3.29
1.3.28
1.3.26
1.3.25
1.3.24
1.3.23
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1.3.19
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1.3.15
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1.3.12
1.3.11
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1.3.5
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1.3.0-rc.0
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1.2.5
1.2.4
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1.2.2
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1.0.0-rc.9
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0.43.0
0.42.0-rc.7
0.42.0-rc.6
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0.42.0-rc.4
0.42.0-rc.3
0.42.0-rc.1
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0.37.8
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0.37.3
0.37.2
0.37.1
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0.36.5
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0.36.1
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0.35.5
0.35.4
0.35.3
0.35.1
0.34.5
0.34.4
0.34.3
0.34.2
0.34.1
0.34.0
0.33.1
0.33.0
0.32.2
0.32.1
0.32.0
0.31.1
0.30.1
0.29.6
0.29.5
0.29.4
0.29.3
0.29.2
0.29.1
0.28.1
0.28.0
0.27.0
0.26.2
0.26.1
0.26.0
0.25.5
0.25.4
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0.25.2
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0.25.0
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0.23.2
0.23.1
0.23.0
0.22.1
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0.1.1-rc.0
0.1.0
The PostgreSQL data layer for Ash Framework
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Files
lib/transformers/prevent_multidimensional_array_aggregates.ex
defmodule AshPostgres.Transformers.PreventMultidimensionalArrayAggregates do
@moduledoc "Prevents at compile time certain aggregates that are unsupported by AshPostgres"
use Spark.Dsl.Transformer
alias Spark.Dsl.Transformer
def after_compile?, do: true
def transform(dsl) do
resource = Transformer.get_persisted(dsl, :module)
dsl
|> Ash.Resource.Info.aggregates()
|> Stream.filter(&(&1.kind in [:list, :first]))
|> Stream.filter(& &1.field)
|> Enum.each(fn aggregate ->
related = Ash.Resource.Info.related(resource, aggregate.relationship_path)
type = Ash.Resource.Info.field(related, aggregate.field).type
case type do
{:array, _} ->
raise Spark.Error.DslError,
module: resource,
path: [:aggregates, aggregate.name],
message: """
Aggregate not supported.
Aggregate #{inspect(resource)}.#{aggregate.name} is not supported, because its type is `#{aggregate.kind}`, and the destination attribute is an array.
Postgres does not support multidimensional arrays with differing lengths internally. In the future we may be able to remove this restriction
for the `:first` type aggregate, but likely never for `:list`. In the meantime, you will have to use a custom calculation to get this data.
"""
_ ->
:ok
end
end)
repo = Transformer.get_option(dsl, [:postgres], :repo)
cond do
match?({:error, _}, Code.ensure_compiled(repo)) ->
{:error, "Could not find repo module #{repo}"}
repo.__adapter__() != Ecto.Adapters.Postgres ->
{:error, "Expected a repo using the postgres adapter `Ecto.Adapters.Postgres`"}
true ->
{:ok, dsl}
end
end
end