[add] Create community nodes

2026-03-10 17:06:43 +08:00
parent 85770dc037
commit db8257b67a
5 changed files with 569 additions and 1 deletions
--- a/api/app/repositories/neo4j/cypher_queries.py
+++ b/api/app/repositories/neo4j/cypher_queries.py
@@ -1058,4 +1058,95 @@ Graph_Node_query = """
                  3 AS priority
                LIMIT $limit

-            """
+            """
+
+
+# ============================================================
+# Community 节点 & BELONGS_TO_COMMUNITY 边
+# ============================================================
+
+COMMUNITY_NODE_SAVE = """
+MERGE (c:Community {community_id: $community_id})
+SET c.end_user_id = $end_user_id,
+    c.formed_at = $formed_at,
+    c.updated_at = datetime(),
+    c.status = $status,
+    c.member_count = $member_count
+RETURN c.community_id AS community_id
+"""
+
+COMMUNITY_ADD_MEMBER = """
+MATCH (e:ExtractedEntity {id: $entity_id, end_user_id: $end_user_id})
+MATCH (c:Community {community_id: $community_id, end_user_id: $end_user_id})
+MERGE (e)-[:BELONGS_TO_COMMUNITY]->(c)
+SET c.updated_at = datetime(),
+    c.member_count = $member_count
+"""
+
+
+
+# ─── Community 聚类相关 Cypher 模板 ───────────────────────────────────────────
+
+COMMUNITY_NODE_UPSERT = """
+MERGE (c:Community {community_id: $community_id})
+SET c.end_user_id = $end_user_id,
+    c.member_count = $member_count,
+    c.updated_at = datetime()
+RETURN c.community_id AS community_id
+"""
+
+ENTITY_JOIN_COMMUNITY = """
+MATCH (e:ExtractedEntity {id: $entity_id, end_user_id: $end_user_id})
+MATCH (c:Community {community_id: $community_id, end_user_id: $end_user_id})
+MERGE (e)-[:BELONGS_TO_COMMUNITY]->(c)
+SET c.updated_at = datetime()
+RETURN e.id AS entity_id, c.community_id AS community_id
+"""
+
+ENTITY_LEAVE_ALL_COMMUNITIES = """
+MATCH (e:ExtractedEntity {id: $entity_id, end_user_id: $end_user_id})
+MATCH (e)-[r:BELONGS_TO_COMMUNITY]->(:Community)
+DELETE r
+"""
+
+GET_ENTITY_NEIGHBORS = """
+MATCH (e:ExtractedEntity {id: $entity_id, end_user_id: $end_user_id})
+OPTIONAL MATCH (e)-[:EXTRACTED_RELATIONSHIP]-(nb:ExtractedEntity {end_user_id: $end_user_id})
+OPTIONAL MATCH (nb)-[:BELONGS_TO_COMMUNITY]->(c:Community)
+RETURN DISTINCT
+    nb.id            AS id,
+    nb.name          AS name,
+    nb.name_embedding AS name_embedding,
+    nb.activation_value AS activation_value,
+    CASE WHEN c IS NOT NULL THEN c.community_id ELSE null END AS community_id
+"""
+
+GET_ALL_ENTITIES_FOR_USER = """
+MATCH (e:ExtractedEntity {end_user_id: $end_user_id})
+OPTIONAL MATCH (e)-[:BELONGS_TO_COMMUNITY]->(c:Community)
+RETURN e.id AS id,
+       e.name AS name,
+       e.name_embedding AS name_embedding,
+       e.activation_value AS activation_value,
+       CASE WHEN c IS NOT NULL THEN c.community_id ELSE null END AS community_id
+"""
+
+GET_COMMUNITY_MEMBERS = """
+MATCH (e:ExtractedEntity {end_user_id: $end_user_id})-[:BELONGS_TO_COMMUNITY]->(c:Community {community_id: $community_id})
+RETURN e.id AS id, e.name AS name, e.entity_type AS entity_type,
+       e.importance_score AS importance_score, e.activation_value AS activation_value,
+       e.name_embedding AS name_embedding
+ORDER BY coalesce(e.activation_value, 0) DESC
+"""
+
+CHECK_USER_HAS_COMMUNITIES = """
+MATCH (c:Community {end_user_id: $end_user_id})
+RETURN count(c) AS community_count
+"""
+
+UPDATE_COMMUNITY_MEMBER_COUNT = """
+MATCH (e:ExtractedEntity {end_user_id: $end_user_id})-[:BELONGS_TO_COMMUNITY]->(c:Community {community_id: $community_id})
+WITH c, count(e) AS cnt
+SET c.member_count = cnt
+RETURN c.community_id AS community_id, cnt AS member_count
+"""