feat: add document structure into GraphRAG (#2033)

Co-authored-by: Appointat <kuda.czk@antgroup.com>
Co-authored-by: tpoisonooo <khj.application@aliyun.com>
Co-authored-by: vritser <vritser@163.com>

dbgpt/app/knowledge/service.py

@@ -12,7 +12,6 @@ from dbgpt.app.knowledge.document_db import (
     KnowledgeDocumentEntity,
 )
 from dbgpt.app.knowledge.request.request import (
-    ChunkEditRequest,
     ChunkQueryRequest,
     DocumentQueryRequest,
     DocumentRecallTestRequest,
@@ -650,12 +649,17 @@ class KnowledgeService:
                 {
                     "id": node.vid,
                     "communityId": node.get_prop("_community_id"),
-                    "name": node.vid,
-                    "type": "",
+                    "name": node.name,
+                    "type": node.get_prop("type") or "",
                 }
             )
         for edge in graph.edges():
             res["edges"].append(
-                {"source": edge.sid, "target": edge.tid, "name": edge.name, "type": ""}
+                {
+                    "source": edge.sid,
+                    "target": edge.tid,
+                    "name": edge.name,
+                    "type": edge.get_prop("type") or "",
+                }
             )
         return res