fix mypy error

api/core/agent/cot_agent_runner.py

@@ -69,9 +69,12 @@ class CotAgentRunner(BaseAgentRunner, ABC):
         tool_instances, prompt_messages_tools = self._init_prompt_tools()
         self._prompt_messages_tools = prompt_messages_tools
 
-        metadata_filtering_conditions = app_config.dataset.retrieve_config.metadata_filtering_conditions
-        for key, dataset_retriever_tool in tool_instances.items():
-            dataset_retriever_tool.retrieval_tool.metadata_filtering_conditions = metadata_filtering_conditions
+        # fix metadata filter not work
+        if app_config.dataset is not None:
+            metadata_filtering_conditions = app_config.dataset.retrieve_config.metadata_filtering_conditions
+            for key, dataset_retriever_tool in tool_instances.items():
+                if hasattr(dataset_retriever_tool, 'retrieval_tool'):
+                    dataset_retriever_tool.retrieval_tool.metadata_filtering_conditions = metadata_filtering_conditions
 
         function_call_state = True
         llm_usage: dict[str, Optional[LLMUsage]] = {"usage": None}

api/core/agent/fc_agent_runner.py

@@ -45,9 +45,12 @@ class FunctionCallAgentRunner(BaseAgentRunner):
         # convert tools into ModelRuntime Tool format
         tool_instances, prompt_messages_tools = self._init_prompt_tools()
 
-        metadata_filtering_conditions = app_config.dataset.retrieve_config.metadata_filtering_conditions
-        for key, dataset_retriever_tool in tool_instances.items():
-            dataset_retriever_tool.retrieval_tool.metadata_filtering_conditions = metadata_filtering_conditions
+        # fix metadata filter not work
+        if app_config.dataset is not None:
+            metadata_filtering_conditions = app_config.dataset.retrieve_config.metadata_filtering_conditions
+            for key, dataset_retriever_tool in tool_instances.items():
+                if hasattr(dataset_retriever_tool, 'retrieval_tool'):
+                    dataset_retriever_tool.retrieval_tool.metadata_filtering_conditions = metadata_filtering_conditions
 
         assert app_config.agent