support concatenated field as default search field

quickwit/Cargo.toml

@@ -325,7 +325,7 @@ quickwit-serve = { path = "quickwit-serve" }
 quickwit-storage = { path = "quickwit-storage" }
 quickwit-telemetry = { path = "quickwit-telemetry" }
 
-tantivy = { git = "https://github.com/quickwit-oss/tantivy/", rev = "c71ec80", default-features = false, features = [
+tantivy = { git = "https://github.com/quickwit-oss/tantivy/", rev = "9f81d59", default-features = false, features = [
   "lz4-compression",
   "mmap",
   "quickwit",

quickwit/quickwit-doc-mapper/src/default_doc_mapper/default_mapper.rs

@@ -1735,6 +1735,28 @@ mod tests {
         .contains("concatenate type must have at least one sub-field"));
     }
 
+    #[test]
+    fn test_concatenate_field_in_default_field() {
+        serde_json::from_str::<DefaultDocMapper>(
+            r#"{
+                "default_search_fields": ["concat"],
+                "field_mappings": [
+                    {
+                        "name": "some_text",
+                        "type": "text"
+                    },
+                    {
+                        "name": "concat",
+                        "type": "concatenate",
+                        "concatenate_fields": ["some_text"]
+                    }
+                ],
+                "mode": "strict"
+            }"#,
+        )
+        .unwrap();
+    }
+
     #[test]
     fn test_concatenate_field_in_mapping() {
         test_doc_from_json_test_aux(

quickwit/rest-api-tests/scenarii/default_search_fields/0002_invalid_default_fields.yaml

@@ -16,8 +16,8 @@ expected:
   message:
     $expect: "\"unknown default search field `regular_field`\" in val"
 ---
-# should fail because default search field targets the root
-# of a json field.
+# should fail because default search field targets a sub field of a
+# non-json field
 method: POST
 endpoint: indexes/
 json:
@@ -26,15 +26,15 @@ json:
   doc_mapping:
     mode: dynamic
     field_mappings:
-      - name: inner_json
-        type: json
+      - name: text
+        type: text
   search_settings:
     default_search_fields:
-      - inner_json
+      - text.inner
 status_code: 400
 expected:
   message:
-    $expect: "\"unknown default search field `inner_json`\" in val"
+    $expect: "\"unknown default search field `text.inner`\" in val"
 ---
 # should fail because dynamic field is not indexed.
 method: POST