Schema View: using view created earlier in a new view SDL doesn't work

[islamaliev]

func TestView_UseViewInAnotherViewQuery(t *testing.T) {
	test := testUtils.TestCase{
		Description: "One to many view with alias on inner object",
		Actions: []any{
			testUtils.SchemaUpdate{
				Schema: `
					type Book {
						name: String
						rating: Float
						author: Author
					}
					type Author {
						name: String
						age: Int
						verified: Boolean
						wrote: [Book]
					}
				`,
			},
			testUtils.CreateDoc{
				CollectionID: 1,
				Doc: `{
					"name":	"Andy"
				}`,
			},
			testUtils.CreateDoc{
				CollectionID: 0,
				Doc: `{
					"name":	"Andy's book",
					"author_id": "bae-2159860f-3cd1-59de-9440-71331e77cbb8"
				}`,
			},
			testUtils.CreateView{
				Query: `
					Book {
						name
						author {
							name
							wrote {
								name
							}
						}
					}
				`,
				SDL: `
					type BookView {
						name: String
						author: AuthorView
					}
					interface AuthorView {
						name: String
						wrote: [BookView]
					}
				`,
			},
			testUtils.CreateView{
				Query: `
					Author {
						name
						wrote {
							name
						}
					}
				`,
				SDL: `
					type AuthorView2 {
						name: String
						wrote: [BookView]
					}
				`,
			},
			testUtils.Request{
				Request: `
					query {
						AuthorView2 {
							name
							wrote {
								name
							}
						}
					}
				`,
				Results: []map[string]any{
					{
						"name": "Andy",
						"wrote": map[string]any{
							"name": "Andy's book",
						},
					},
				},
			},
		},
	}

	testUtils.ExecuteTestCase(t, test)
}

This produces error relation must be defined on both schemas. Field: wrote, Type: BookView.
It seems like it doesn't see the view created on the first action.
But if we change the SDL of the second CreateView action to this:

				SDL: `
					type AuthorView {
						name: String
						wrote: [BookView2]
					}
					type BookView2 {
						name: String
						author: AuthorView
					}
				`,

it produces error schema type already exists. Name: AuthorView. which means it sees it after all.

I think the interfaces should be

• either local to the view so that other views can create types or interfaces with the same name
• or should be visible to all views, hence reusable by other views

[AndrewSisley]

This produces error relation must be defined on both schemas. Field: wrote, Type: BookView.

This is correct behaviour. And is the same as you'd get in normal collections when only defining half a relation.

[AndrewSisley]

it produces error schema type already exists. Name: AuthorView. which means it sees it after all.

This is because AuthorView was already created in the first SDL, and you are trying to re-define it. This also is the same behaviour as in normal collections.