fix: transaction error after run assistant chat

backend/apps/terminology/curd/terminology.py

@@ -390,10 +390,23 @@ def save_embeddings(session: Session, ids: List[int]):
 FROM terminology AS child
 ) TEMP
 WHERE similarity > {settings.EMBEDDING_TERMINOLOGY_SIMILARITY} AND oid = :oid
+AND (specific_ds = false OR specific_ds IS NULL)
+ORDER BY similarity DESC
+LIMIT {settings.EMBEDDING_TERMINOLOGY_TOP_COUNT}
+"""
+
+embedding_sql_with_datasource = f"""
+SELECT id, pid, word, similarity
+FROM
+(SELECT id, pid, word, oid, specific_ds, datasource_ids,
+( 1 - (embedding <=> :embedding_array) ) AS similarity
+FROM terminology AS child
+) TEMP
+WHERE similarity > {settings.EMBEDDING_TERMINOLOGY_SIMILARITY} AND oid = :oid
 AND (
-    (:datasource IS NULL AND (specific_ds = false OR specific_ds IS NULL))
-    OR
-    (:datasource IS NOT NULL AND ((specific_ds = false OR specific_ds IS NULL) OR (specific_ds = true AND datasource_ids IS NOT NULL AND datasource_ids @> jsonb_build_array(:datasource))))
+    (specific_ds = false OR specific_ds IS NULL)
+     OR
+    (specific_ds = true AND datasource_ids IS NOT NULL AND datasource_ids @> jsonb_build_array(:datasource))
 )
 ORDER BY similarity DESC
 LIMIT {settings.EMBEDDING_TERMINOLOGY_TOP_COUNT}
@@ -447,14 +460,21 @@ def select_terminology_by_word(session: SessionDep, word: str, oid: int, datasou
 
             embedding = model.embed_query(word)
 
-            results = session.execute(text(embedding_sql), {'embedding_array': str(embedding), 'oid': oid,
-                                                            'datasource': datasource}).fetchall()
+            with session.begin():
+                if datasource is not None:
+                    results = session.execute(text(embedding_sql_with_datasource),
+                                              {'embedding_array': str(embedding), 'oid': oid,
+                                               'datasource': datasource}).fetchall()
+                else:
+                    results = session.execute(text(embedding_sql),
+                                              {'embedding_array': str(embedding), 'oid': oid}).fetchall()
 
-            for row in results:
-                _list.append(Terminology(id=row.id, word=row.word, pid=row.pid))
+                for row in results:
+                    _list.append(Terminology(id=row.id, word=row.word, pid=row.pid))
 
         except Exception:
             traceback.print_exc()
+            session.rollback()
 
     _map: dict = {}
     _ids: list[int] = []