created schema, repo... for analytic tables

apps/lol_analytics/lib/lol_analytics/dimensions/item/item_repo.ex

@@ -0,0 +1,21 @@
+defmodule LolAnalytics.Dimensions.Item.ItemRepo do
+  alias LolAnalytics.Dimensions.Item.ItemSchema
+  alias LoLAnalytics.Repo
+
+  def get_or_create(item_id) do
+    item = Repo.get(ItemSchema, item_id: item_id)
+
+    case item do
+      nil ->
+        item_changeset = ItemSchema.changeset(%ItemSchema{}, %{item_id: item_id})
+        Repo.insert(item_changeset)
+
+      item ->
+        item
+    end
+  end
+
+  def list_items() do
+    Repo.all(ItemSchema)
+  end
+end

apps/lol_analytics/lib/lol_analytics/dimensions/item/item_schema.ex

@@ -0,0 +1,15 @@
+defmodule LolAnalytics.Dimensions.Item.ItemSchema do
+  use Ecto.Schema
+  import Ecto.Changeset
+
+  schema "dim_item" do
+    field :item_id, :integer
+    timestamps()
+  end
+
+  def changeset(item = %__MODULE__{}, attrs \\ %{}) do
+    item
+    |> cast(attrs, [:item_id])
+    |> validate_required([:item_id])
+  end
+end