simple test to make iterating faster

crates/_types/enums/tests/test_compile_query.rs

@@ -0,0 +1,85 @@
+use sqlx::mysql::MySqlRow;
+use sqlx::{FromRow, MySql, MySqlPool, QueryBuilder, Row};
+
+use enums::by_table::media_files::media_file_class::MediaFileClass;
+use enums::by_table::media_files::media_file_type::MediaFileType;
+use enums::common::visibility::Visibility;
+use enums::traits::mysql_from_row::MySqlFromRow;
+
+#[test]
+fn test_that_this_compiles() {
+  // This test only exists as an integration test with the package.
+  // When we do upgrades of SQLx, the binding between sqlx, our macros,
+  // and our code can break down. Having this thin use case helps us
+  // deal with migration difficulties.
+  //
+  // Unfortunately this code requires access to a database or cached queries to compile, so
+  // we may want to rethink this strategy in the future.
+  assert_eq!(1, 1);
+}
+
+pub async fn test_query(mysql_pool: &MySqlPool) {
+  let mut query = query_builder();
+  let query = query.build_query_as::<MediaFileListItemInternal>();
+  let _results = query.fetch_all(mysql_pool).await;
+}
+
+fn query_builder<'a>() -> QueryBuilder<'a, MySql> {
+  // NB: Query cannot be statically checked by sqlx
+  let mut query_builder: QueryBuilder<MySql> = QueryBuilder::new(
+    r#"
+SELECT
+    m.id,
+    m.media_class,
+    m.media_type,
+    m.creator_set_visibility
+FROM media_files AS m
+LEFT OUTER JOIN users AS u
+    ON m.maybe_creator_user_token = u.token
+LEFT OUTER JOIN model_weights as w
+     ON m.maybe_origin_model_token = w.token
+LEFT OUTER JOIN media_files as media_file_cover_image
+    ON media_file_cover_image.token = m.maybe_cover_image_media_file_token
+LEFT OUTER JOIN entity_stats
+    ON entity_stats.entity_type = "media_file"
+    AND entity_stats.entity_token = m.token
+LEFT OUTER JOIN prompts
+    ON prompts.token = m.maybe_prompt_token
+    "#
+  );
+
+  query_builder
+}
+
+struct MediaFileListItemInternal {
+  id: i64,
+  media_class: MediaFileClass,
+  media_type: MediaFileType,
+  creator_set_visibility: Visibility,
+}
+
+// NB(bt,2023-12-05): There's an issue with type hinting in the `as` clauses with QueryBuilder (or
+// raw query strings) and sqlx::FromRow, regardless of whether it is derived of manually
+// implemented. Perhaps this will improve in the future, but for now manually constructed queries
+// cannot have type hints, eg. the following:
+//
+//    m.token as `token: tokens::tokens::media_files::MediaFileToken`,
+//    m.origin_category as `origin_category: enums::by_table::media_files::media_file_origin_category::MediaFileOriginCategory`,
+//    m.creator_set_visibility as `creator_set_visibility: enums::common::visibility::Visibility`,
+//
+// This results in the automatic mapping not being able to be found by name (for macro derive), and
+// in the manual case `row.try_get()` etc. won't have the correct column name (since the name is the
+// full "as" clause).
+impl FromRow<'_, MySqlRow> for MediaFileListItemInternal {
+  fn from_row(row: &MySqlRow) -> Result<Self, sqlx::Error> {
+    Ok(Self {
+      id: row.try_get("id")?,
+      media_class: MediaFileClass::try_from_mysql_row(row, "media_class")?,
+      //media_type: MediaFileType::try_from_mysql_row(row, "media_type")?,
+      //creator_set_visibility: Visibility::try_from_mysql_row(row, "creator_set_visibility")?,
+      //media_class: MediaFileClass::Video,
+      media_type: MediaFileType::Mp4,
+      creator_set_visibility: Visibility::Public,
+    })
+  }
+}