后端没修完版

src/langbot/pkg/workflow/nodes/database_query.py

@@ -0,0 +1,52 @@
+"""Database Query Node - execute database queries
+
+Node metadata is loaded from: ../../templates/metadata/nodes/database_query.yaml
+"""
+
+from __future__ import annotations
+
+from typing import Any, ClassVar
+
+from ..entities import ExecutionContext
+from ..node import WorkflowNode, workflow_node, NodePort, NodeConfig
+
+
+@workflow_node('database_query')
+class DatabaseQueryNode(WorkflowNode):
+    """Database query node - execute database queries"""
+
+    type_name = "database_query"
+    category = "integration"
+    icon = "Database"
+    name = "database_query"
+    description = "database_query"
+    name_zh = "数据库查询"
+    name_en = "Database Query"
+    description_zh = "执行数据库查询"
+    description_en = "Execute database queries"
+
+    inputs: ClassVar[list[NodePort]] = []
+    outputs: ClassVar[list[NodePort]] = []
+    config_schema: ClassVar[list[NodeConfig]] = []
+
+    async def execute(self, inputs: dict[str, Any], context: ExecutionContext) -> dict[str, Any]:
+        connection_type = self.get_config("connection_type", "postgresql")
+        connection_string = self.get_config("connection_string", "")
+        query = self.get_config("query", "")
+        query_type = self.get_config("query_type", "select")
+        timeout = self.get_config("timeout", 30)
+
+        parameters = inputs.get("parameters", {})
+
+        return {
+            "results": [],
+            "row_count": 0,
+            "success": False,
+            "_debug": {
+                "connection_type": connection_type,
+                "query": query,
+                "query_type": query_type,
+                "timeout": timeout,
+                "parameters": parameters,
+            },
+        }