test array within array

crates/integration-tests/src/tests/basic.rs

@@ -46,3 +46,27 @@ async fn filters_by_date() -> anyhow::Result<()> {
     );
     Ok(())
 }
+
+#[tokio::test]
+async fn selects_array_within_array() -> anyhow::Result<()> {
+    assert_yaml_snapshot!(
+        graphql_query(
+            r#"
+            query {
+              artistsWithAlbumsAndTracks(limit: 1, order_by: {id: Asc}) {
+                name
+                albums {
+                  title
+                  tracks {
+                    name
+                  }
+                }
+              }
+            }
+            "#
+        )
+        .run()
+        .await?
+    );
+    Ok(())
+}

crates/integration-tests/src/tests/snapshots/integration_tests__tests__basic__selects_array_within_array.snap

@@ -0,0 +1,31 @@
+---
+source: crates/integration-tests/src/tests/basic.rs
+expression: "graphql_query(r#\"\n            query {\n              artistsWithAlbumsAndTracks(limit: 1, order_by: {id: Asc}) {\n                name\n                albums {\n                  title\n                  tracks {\n                    name\n                  }\n                }\n              }\n            }\n            \"#).run().await?"
+---
+data:
+  artistsWithAlbumsAndTracks:
+    - name: AC/DC
+      albums:
+        - title: For Those About To Rock We Salute You
+          tracks:
+            - name: "Let's Get It Up"
+            - name: Inject The Venom
+            - name: Evil Walks
+            - name: Snowballed
+            - name: Breaking The Rules
+            - name: Spellbound
+            - name: Night Of The Long Knives
+            - name: Put The Finger On You
+            - name: For Those About To Rock (We Salute You)
+            - name: C.O.D.
+        - title: Let There Be Rock
+          tracks:
+            - name: Go Down
+            - name: Bad Boy Boogie
+            - name: Problem Child
+            - name: Dog Eat Dog
+            - name: Let There Be Rock
+            - name: Overdose
+            - name: "Hell Ain't A Bad Place To Be"
+            - name: Whole Lotta Rosie
+errors: ~

fixtures/hasura/chinook/connector/chinook/native_queries/artists_with_albums_and_tracks.json

@@ -0,0 +1,59 @@
+{
+  "name": "artists_with_albums_and_tracks",
+  "representation": "collection",
+  "inputCollection": "Artist",
+  "description": "combines artist, albums, and tracks into a single document per artist",
+  "resultDocumentType": "ArtistWithAlbumsAndTracks",
+  "objectTypes": {
+    "ArtistWithAlbumsAndTracks": {
+      "fields": {
+        "_id": { "type": { "scalar": "objectId" } },
+        "Name": { "type": { "scalar": "string" } },
+        "Albums": { "type": { "arrayOf": { "object": "AlbumWithTracks" } } }
+      }
+    },
+    "AlbumWithTracks": {
+      "fields": {
+        "_id": { "type": { "scalar": "objectId" } },
+        "Title": { "type": { "scalar": "string" } },
+        "Tracks": { "type": { "arrayOf": { "object": "Track" } } }
+      }
+    }
+  },
+  "pipeline": [
+    {
+      "$lookup": {
+        "from": "Album",
+        "localField": "ArtistId",
+        "foreignField": "ArtistId",
+        "as": "Albums",
+        "pipeline": [
+          {
+            "$lookup": {
+              "from": "Track",
+              "localField": "AlbumId",
+              "foreignField": "AlbumId",
+              "as": "Tracks"
+            }
+          },
+          {
+            "$replaceWith": {
+              "_id": "$_id",
+              "Title": "$Title",
+              "Tracks": "$Tracks"
+            }
+          }
+        ]
+      }
+    },
+    { 
+      "$replaceWith": {
+        "_id": "$_id",
+        "Name": "$Name",
+        "Albums": "$Albums"
+      }
+    }
+  ]
+}
+
+

fixtures/hasura/chinook/metadata/ArtistsWithAlbumsAndTracks.hml

@@ -0,0 +1,145 @@
+---
+kind: ObjectType
+version: v1
+definition:
+  name: AlbumWithTracks
+  fields:
+    - name: id
+      type: Chinook_ObjectId!
+    - name: title
+      type: String!
+    - name: tracks
+      type: "[Track!]!"
+  graphql:
+    typeName: Chinook_AlbumWithTracks
+    inputTypeName: Chinook_AlbumWithTracksInput
+  dataConnectorTypeMapping:
+    - dataConnectorName: chinook
+      dataConnectorObjectType: AlbumWithTracks
+      fieldMapping:
+        id:
+          column:
+            name: _id
+        title:
+          column:
+            name: Title
+        tracks:
+          column:
+            name: Tracks
+
+---
+kind: TypePermissions
+version: v1
+definition:
+  typeName: AlbumWithTracks
+  permissions:
+    - role: admin
+      output:
+        allowedFields:
+          - id
+          - title
+          - tracks
+
+---
+kind: ObjectType
+version: v1
+definition:
+  name: ArtistWithAlbumsAndTracks
+  fields:
+    - name: id
+      type: Chinook_ObjectId!
+    - name: albums
+      type: "[AlbumWithTracks!]!"
+    - name: name
+      type: String!
+  graphql:
+    typeName: Chinook_ArtistWithAlbumsAndTracks
+    inputTypeName: Chinook_ArtistWithAlbumsAndTracksInput
+  dataConnectorTypeMapping:
+    - dataConnectorName: chinook
+      dataConnectorObjectType: ArtistWithAlbumsAndTracks
+      fieldMapping:
+        id:
+          column:
+            name: _id
+        albums:
+          column:
+            name: Albums
+        name:
+          column:
+            name: Name
+
+---
+kind: TypePermissions
+version: v1
+definition:
+  typeName: ArtistWithAlbumsAndTracks
+  permissions:
+    - role: admin
+      output:
+        allowedFields:
+          - id
+          - albums
+          - name
+
+---
+kind: ObjectBooleanExpressionType
+version: v1
+definition:
+  name: ArtistWithAlbumsAndTracksBoolExp
+  objectType: ArtistWithAlbumsAndTracks
+  dataConnectorName: chinook
+  dataConnectorObjectType: ArtistWithAlbumsAndTracks
+  comparableFields:
+    - fieldName: id
+      operators:
+        enableAll: true
+    - fieldName: albums
+      operators:
+        enableAll: true
+    - fieldName: name
+      operators:
+        enableAll: true
+  graphql:
+    typeName: Chinook_ArtistWithAlbumsAndTracksBoolExp
+
+---
+kind: Model
+version: v1
+definition:
+  name: ArtistsWithAlbumsAndTracks
+  objectType: ArtistWithAlbumsAndTracks
+  source:
+    dataConnectorName: chinook
+    collection: artists_with_albums_and_tracks
+  filterExpressionType: ArtistWithAlbumsAndTracksBoolExp
+  orderableFields:
+    - fieldName: id
+      orderByDirections:
+        enableAll: true
+    - fieldName: albums
+      orderByDirections:
+        enableAll: true
+    - fieldName: name
+      orderByDirections:
+        enableAll: true
+  graphql:
+    selectMany:
+      queryRootField: artistsWithAlbumsAndTracks
+    selectUniques:
+      - queryRootField: artistsWithAlbumsAndTracksById
+        uniqueIdentifier:
+          - id
+    orderByExpressionType: Chinook_ArtistsWithAlbumsAndTracksOrderBy
+  description: combines artist, albums, and tracks into a single document per artist
+
+---
+kind: ModelPermissions
+version: v1
+definition:
+  modelName: ArtistsWithAlbumsAndTracks
+  permissions:
+    - role: admin
+      select:
+        filter: null
+

fixtures/hasura/chinook/metadata/chinook.hml

@@ -536,6 +536,22 @@ definition:
               type:
                 type: named
                 name: String
+        AlbumWithTracks:
+          fields:
+            _id:
+              type:
+                type: named
+                name: ObjectId
+            Title:
+              type:
+                type: named
+                name: String
+            Tracks:
+              type:
+                type: array
+                element_type:
+                  type: named
+                  name: Track
         Artist:
           description: Object type for collection Artist
           fields:
@@ -553,6 +569,22 @@ definition:
                 underlying_type:
                   type: named
                   name: String
+        ArtistWithAlbumsAndTracks:
+          fields:
+            _id:
+              type:
+                type: named
+                name: ObjectId
+            Albums:
+              type:
+                type: array
+                element_type:
+                  type: named
+                  name: AlbumWithTracks
+            Name:
+              type:
+                type: named
+                name: String
         Customer:
           description: Object type for collection Customer
           fields:
@@ -1017,6 +1049,15 @@ definition:
               unique_columns:
                 - _id
           foreign_keys: {}
+        - name: artists_with_albums_and_tracks
+          description: combines artist, albums, and tracks into a single document per artist
+          arguments: {}
+          type: ArtistWithAlbumsAndTracks
+          uniqueness_constraints:
+            artists_with_albums_and_tracks_id:
+              unique_columns:
+                - _id
+          foreign_keys: {}
       functions: []
       procedures:
         - name: insertArtist