{
  "title": "RubyGem Dev Week test",
  "datasets": [
    {
      "type": "dataset",
      "id": "dataset.repos",
      "title": "Repositories",
      "folder": "Foldered Repos",
      "columns": [
        {
          "type": "anchor",
          "id" : "attr.repos.repo_id",
          "description": "This is anchor description",
          "title": "Repository Id"
        },
        {
          "type": "label",
          "id" : "some_label_id",
          "column_name": "repo_id",
          "reference": "attr.repos.repo_id",
          "title": "Repository Id"
        },
        {
          "type": "attribute",
          "id" : "some_attr_id",
          "title": "Repository Name"
        },
        {
          "type": "label",
          "id" : "some_attr_label_id",
          "reference": "some_attr_id",
          "column_name": "repo_name",
          "gd_data_type": "VARCHAR(128)",
          "title": "Repository Name"
        }
      ]
    },
    {
      "type": "dataset",
      "id": "dataset.devs",
      "title": "Developers",
      "columns": [
        {
          "type": "anchor",
          "id" : "attr.devs.dev_id",
          "title": "Dev",
          "folder": "Anchor folder"
        },
        {
          "type": "label",
          "id": "label.devs.dev_id.id",
          "column_name": "dev_id",
          "reference": "attr.devs.dev_id",
          "title": "Id"
        },
        {
          "type": "label",
          "id": "label.devs.dev_id.email",
          "column_name": "email",
          "reference": "attr.devs.dev_id",
          "title": "Email",
          "default_label": true
        }
      ]
    },
    {
      "type": "dataset",
      "id": "dataset.commits",
      "title": "Commits",
      "columns": [
        {
          "type": "anchor",
          "id" : "attr.commits.factsof"
        },
        {
          "type": "fact",
          "id" : "fact.commits.lines_changed",
          "column_name": "lines_changed",
          "title": "Lines Changed",
          "description": "Fact description"
        },
        {
          "type": "date",
          "column_name": "committed_on",
          "dataset": "committed_on"
        },
        {
          "type": "reference",
          "column_name": "dev_id",
          "dataset": "dataset.devs"
        },
        {
          "type": "reference",
          "column_name": "repo_id",
          "dataset": "dataset.repos"
        }
      ]
    }
  ],
  "date_dimensions": [
    {
      "type": "date_dimension",
      "id": "committed_on"
    }
  ]
}