Add migration and schema for claim

lib/extensions/value_flows/claim/claim.ex

+# SPDX-License-Identifier: AGPL-3.0-only
+defmodule ValueFlows.Claim do
+  use Pointers.Pointable,
+    otp_app: :commons_pub,
+    source: "vf_claim",
+    table_id: "C0MM0NSPVBVA1VEF10WSC1A1MS"
+
+  import CommonsPub.Common.Changeset, only: [change_public: 1, change_disabled: 1]
+
+  alias Ecto.Changeset
+  alias CommonsPub.Users.User
+
+  alias ValueFlows.Knowledge.Action
+  alias ValueFlows.Knowledge.ResourceSpecification
+  alias ValueFlows.Observation.EconomicEvent
+  alias ValueFlows.Observation.EconomicResource
+
+  @type t :: %__MODULE__{}
+
+  pointable_schema do
+    field(:note, :string)
+    field(:agreed_in, :string)
+    field(:finished, :boolean)
+    field(:created, :utc_datetime_usec)
+    field(:due, :utc_datetime_usec)
+    field(:resource_classified_as, {:array, :string})
+
+    belongs_to(:action, Action, type: :string)
+    belongs_to(:provider, Pointers.Pointer)
+    belongs_to(:receiver, Pointers.Pointer)
+    belongs_to(:resource_quantity, Measure, on_replace: :nilify)
+    belongs_to(:effort_quantity, Measure, on_replace: :nilify)
+
+    belongs_to(:resource_conforms_to, ResourceSpecification)
+    belongs_to(:triggered_by, EconomicEvent)
+
+    # a.k.a. in_scope_of
+    belongs_to(:context, Pointers.Pointer)
+
+    # not defined in spec, used internally
+    belongs_to(:creator, User)
+    field(:is_public, :boolean, virtual: true)
+    field(:published_at, :utc_datetime_usec)
+    field(:is_disabled, :boolean, virtual: true, default: false)
+    field(:disabled_at, :utc_datetime_usec)
+    field(:deleted_at, :utc_datetime_usec)
+
+    timestamps(inserted_at: false)
+  end
+
+  @required ~w(action_id)a
+  @cast @required ++
+    ~w(note finished agreed_in created due resource_classified_as is_disabled)a
+
+  def create_changeset(%User{} = creator, attrs) do
+    %__MODULE__{}
+    |> Changeset.cast(attrs, @cast)
+    |> Changeset.change(
+      creator_id: creator.id,
+      is_public: true
+    )
+    |> common_changeset()
+  end
+
+  defp common_changeset(changeset) do
+    changeset
+    |> change_public()
+    |> change_disabled()
+  end
+end

lib/extensions/value_flows/claim/migrations.ex

+# SPDX-License-Identifier: AGPL-3.0-only
+defmodule ValueFlows.Claim.Migrations do
+  use Ecto.Migration
+
+  import Pointers.Migration
+
+  alias ValueFlows.Knowledge.ResourceSpecification
+  alias ValueFlows.Observation.EconomicEvent
+
+  def up do
+    create_pointable_table(ValueFlows.Claim) do
+      add(:note, :text)
+      add(:agreed_in, :string)
+      add(:action_id, :string)
+
+      add(:created, :timestamptz)
+      add(:due, :timestamptz)
+
+      add(:provider_id, weak_pointer(), null: true)
+      add(:receiver_id, weak_pointer(), null: true)
+      add(:resource_conforms_to_id, weak_pointer(ResourceSpecification), null: true)
+      add(:triggered_by_id, weak_pointer(EconomicEvent), null: true)
+      add(:creator_id, references("mn_user", on_delete: :nilify_all))
+
+      add(:context_id, weak_pointer(), null: true)
+
+      add(:published_at, :timestamptz)
+      add(:deleted_at, :timestamptz)
+      add(:disabled_at, :timestamptz)
+
+      timestamps(inserted_at: false, type: :utc_datetime_usec)
+    end
+  end
+
+  def down do
+    drop_pointable_table(ValueFlows.Claim)
+  end
+end

priv/repo/migrations/20201105102006_create_claim.exs

+defmodule CommonsPub.Repo.Migrations.CreateClaim do
+  use Ecto.Migration
+
+  def up, do: ValueFlows.Claim.Migrations.up()
+  def down, do: ValueFlows.Claim.Migrations.down()
+end